Tag Archives: crushing

English Press Releases

Stiebel: Powerful driving force in the field of crushing

New Stiebel pump drive advances mobile hydraulics

Stiebel: Powerful driving force in the field of crushing

Specially developed for mobile crushers: the Stiebel type 4395 pump drive. (Source: Stiebel Drive Technology)

Under tough conditions, such as those encountered in mining and open cast mining operations, high-performance machine and transmission solutions are needed that are both ecologically sustainable and cost efficient at the same time. Hybrid or fully electric drive concepts are in increasing demand for such applications, because they offer reduced emissions coupled with excellent energy efficiency. To meet these challenges the experts at Stiebel Drive Technology employ high performance and individually adapted transmission solutions to realize a wide range of mobile hydraulic applications.

Mobile diesel-electric crushers made more efficient
With the pump drive type 4395, the experts have now created a drive solution for mobile diesel-electric hybrid crushers. The transmission is part of the modular motor/transmission unit and makes an essential contribution to energy efficiency and the optimization of fuel consumption, thereby making operations particularly environmentally friendly. The Stiebel pump drive, specially developed for the field of crushing, has an input power of 940 HP (700 kW), a max. output power per pump shaft of 480 HP (360 kW), and ratios of between 1.0 and 0.67. An offset intermediate shaft offers a very large spacing between the power take-off shafts with an inline design. This allows large motor components up to SAE-0 to be attached in direct and through-drive mode, while simultaneously driving hydraulic units up to SAE-E on both sides of the output driveshafts.

Powerful operation with reduced emissions
The special benefit offered by this solution lies in the different drive modi, which can be selected in accordance with the specific requirements. In mode 1 the diesel engine and transmission operate to deliver an extra high level of power, necessary when crushing hard stone for instance. In this mode, power is delivered to the auxiliary equipment and a generator, which charges the energy storage unit. In the second drive mode the diesel engine is decoupled from the transmission and the drive is provided by the electric motor on the through-drive side. The electric motor is now powered by the energy storage unit. In comparison with the use of the diesel engine, the electric drive is particularly environmentally friendly because no exhaust gases are emitted. It furthermore offers greater efficiency and produces less waste heat, which has a positive effect on the cooling situation of the overall system.

A further drive mode can also be realized if a hydraulic drive motor is fitted to the power take offs. In addition to the diesel-electric hybrid solutions, the pump drive with drive-side clutch offers many more drive options. These have already been successfully proven many hundreds of times during practical operations across a range of different industries.

„Smart“ electric drive for a range of different mobile hydraulic applications
The transmission experts at Stiebel also provide transmissions that are designed for the appropriate hydraulic power requirements and to which an electric motor can be directly fitted without a clutch being necessary in-between. These economically efficient solutions are in particular demand for all tunnel construction, deep-shaft mining and offshore applications, because they generate no emissions. The weight saving is a further benefit which significantly simplifies integration into engine compartments as they become more compact with advances in design. Stiebel is continuously working to develop new solutions which further advance the technology of hybrid to fully electric drive concepts.

DOWNLOAD PRESS INFORMATION AND IMAGES

Since its founding in 1946 the focus of Stiebel-Getriebebau has been on the developing and manufacturing of gearboxes. Today the company known as the driving force is a widely respected partner for gearbox solutions in conveyor technology and mobile hydraulics. As a specialist for customised gearbox designs, Stiebel offers specific answers to complex challenges in numerous businesses. As a well-known brand worldwide for gearbox solutions the company from Waldbröl (70 km east of Cologne) is always close to its customers – with various branches and subsidiaries.

Firmenkontakt
Stiebel-Getriebebau GmbH & Co. KG
Central switchboard
Industriestraße 12
51545 Waldbröl
02291 791-0
02291 791-290
info@stiebel.de
http://www.stiebel.de/en/homepage.html

Pressekontakt
PSV
Lara Bender
Schlachthausstr. 10
57072 Siegen
0271 77001622
l.bender@psv-marketing.de
http://www.psv-marketing.de

Environment Energy

More efficient crushed sand production

Rotor impact mills with a narrow milling gap produce a higher proportion of fine sand

More efficient crushed sand production

The feed material is thrown against the anvil ring of the rotor impact mill .

BHS-Sonthofen introduced their new rotor impact mill of type RPMF, a variant of the proven rotor impact mills of type RPM, at bauma 2016. The new RPMF machines produce even finer fractions as well as output material with a significantly higher proportion of fine sand. As such, machines of this type are more efficient in producing crushed sand.

The RPMF design is a variant of the rotor impact mills of type RPM, which are known in the industry as „sand makers.“ BHS designed both types of machines to be used primarily with pre-crushed, brittle and mildly abrasive materials such as limestone. Impact crushing has proven to be the best method for crushing these kinds of materials.

BHS-Sonthofen developed the new machine type specifically for finer output sizes. Thanks to a longer, narrower milling gap and increased circumferential speed (of up to 90 m/s) in the rotor, machines of type RPMF archive higher reduction ration than other machines do. As a result, they provide users with output material that contains a higher proportion of fine-sand.

Ludwig Bechteler, Sales Director of Mixing Technology at BHS, oversaw testing for the new machines: „The tests conducted in our technology center demonstrated that RPMF machines produce a significantly higher proportion of usable fine sand in the grain-size range of 0 to 1 mm than rotor impact mills of type RPM do. For example, RPMFs produce over 50 percent more usable dry mortar sand.“

The new machines of type RPMF also feature a significantly narrower gap between the grinding tools and the anvil ring. The gap width can be set to a minimum of 5 mm.

The new machines yield significantly more fine sand and make plants more efficient in producing sand by reducing the return flow of coarse material, which in turn reduces the number of times that material needs to pass through the mills. This also means that these machines require less screening and conveyor technology. Moreover, since they produce finer feed material, these machines reduce workloads for ball mills, which can crush material to a particle size of under 40 µm.

The feed material can have a particle size of up to 32 mm. A BHS rotor impact mill of type RPM can be used to pre-crush feed fractions up to 56 mm.

BHS-Sonthofen produces the new rotor impact mills of type RPMF in two different designs:
-RPMF1116, which has a circumferential speed of up to 90 m/s and a throughput of up to 25 t/h
-RPMF1516, which has a circumferential speed of up to 90 m/s and a throughput of up to 55 t/h

The technology in detail

The RPMF machines combine high rotation speeds and a narrower milling gap, so the engineers who designed them needed to control significantly greater centrifugal forces while maintaining a tighter production tolerance.

The feed material is inserted into the machine from above via the central feed-in pipe. When it impacts with the rotor, the material is accelerated towards the outside through centrifugal forces; there, the horseshoe-shaped hammers hit it and throw it against the anvil ring. As the material impacts with the ring, it is subjected to impact and shear forces that crush it. After the material rebounds from the anvil ring, it comes into contact with the hammers once again, which further crush it and throw it back against the anvil ring. The process is repeated multiple times, subjecting the feed material to intense stress. The material leaves the rotor through the gap between the rotor and the anvil ring, falling down through the two outlet chutes.

The mill can be operated alternately clockwise and counter-clockwise, which reduces wear on the hammers. Easy-to-replace spacers allow the operator to modify the milling gap in accordance with the wear on the impact hammers.

About BHS-Sonthofen GmbH

BHS-Sonthofen GmbH is an owner-operated group of companies in the field of machinery and plant engineering, and is based in Sonthofen, Germany. The company offers technical solutions for mechanical process engineering, concentrating primarily on mixing, crushing, recycling and filtration. With more than 350 employees and several subsidiaries, BHS-Sonthofen has a global presence.

The Crushing Technology division produces impact crushers and impact mills with vertical and horizontal shafts. These tools are used for processing mineral substances at quarries, gravel plants, mining sites and the like.

For further information, please visit: www.bhs-sonthofen.de

Firmenkontakt
BHS-Sonthofen GmbH
Roland Schmid
An der Eisenschmelze 47
D-87527 Sonthofen, Germany
+49 8321 6099-231
press@bhs-sonthofen.de
http://www.bhs-sonthofen.de

Pressekontakt
VIP Kommunikation
Regina Reinhardt
Dennewartstr. 25-27
52068 Aachen, Germany
+49.241.89468-24
reinhardt@vip-kommunikation.de
www.vip-kommunikation.de

Environment Energy

Major contract from Switzerland: Non-ferrous metals in incinerator bottom ash are turned into valuable resources

Processing and refinement of metals derived from waste incineration plant slag and other metal-bearing materials

Major contract from Switzerland: Non-ferrous metals in incinerator bottom ash are turned into valuable resources

The head office of DHZ in the Swiss municipality of Lufingen was built using sustainable materials.

BHS-Sonthofen was commissioned by Swiss-based DHZ AG to build a complete plant for processing concentrated metals bound in incinerator bottom ash. The plant will also be able to process and refine a wide range of metal-bearing materials. Recycling machines from BHS are core components of both processing lines, as they allow for efficient and selective shredding. This order from Switzerland is the largest ever for the Recycling Technology division.

The Swiss company DHZ AG, which is based in Lufingen near Zurich, operates a modern landfill and connected recycling plant. This plant is used to sort out resources and contaminants from the materials to be put into the landfill; rather than being deposited, these are then further processed. The supersort® facility for processing ash from waste incineration plants with a capacity of more than 100,000 tons of ash per year takes up a major portion of the recycling plant.

In order to further process the highly concentrated metals delivered by the supersort® facility, DHZ is setting up a new processing plant called supersort®metall in the neighboring town of Oberglatt. The annex will process non-ferrous metal concentrates originating from customer facilities and the supersort® and supersort®fein plants of DHZ. In addition, metalliferous fine fractions derived from shredding vehicle scrap and electronics devices will be further processed there. Lead from backstops can be processed as well. The goal is to attain high-quality heavy and light non-ferrous fractions from the concentrate that are to be sold to smelting works or industrial customers. Each line of the plant has a processing capacity of 10 tons/h.

DHZ specifically required a provider able to offer a dry processing method because wet processing would have incurred significant additional costs due to the high requirements associated with water and sludge treatment.

This was one of the reasons why the customer chose selective granulation technologies from BHS-Sonthofen as the central components for their new facility. Machine technology for the recycling industry is based on the method of impact crushing using impact mills.

BHS-Sonthofen has been commissioned with delivering the machine technology as well as with implementing the entire new plant to full operability in 2016. The delivery scope comprises two entire lines – one for generating particle sizes from 8 to 100 mm and another for fine processing in the range of 0 to 10 mm. BHS will deliver all components, from feeding systems through to big bag loading stations. The list of components includes various BHS impact mills, sifting machines, zigzag sifters, cyclone separators, magnetic drum-type separators, separating tables, the entire conveyor system, a dust removal system, steel construction works as well as controlling and visualization.

Machines from BHS-Sonthofen include an impact mill of type PM 0806, one rotor impact mill of type RPMV 1113 and one rotor impact mill of type RPMX 1516. These machines process granulates from 8 to 100 mm and produce a fine output with sizes from 0 to 10 mm. As a final step, the processed material is cleanly separated by type – for example, according to light and heavy non-ferrous metals, ferromagnetic materials, oversized particles and dust – and then filled into big bags.

For Alfred Weber, Sales Director Recycling Technology at BHS-Sonthofen, this contract underscores the success of BHS“s strategy to offer a continuously increasing range of complete plants: „Our client greatly appreciates that we do not simply deliver individual machines, but rather provide a fully operable plant in turn-key condition.“ Incidentally, the DHZ order is the largest the Recycling Technology division has ever received since its founding in 2001.

Construction commenced in early 2016, and the plant is scheduled to go live in the summer of the same year.

Background

BHS Impact Mills

The BHS machine technology portfolio for the recycling sector comprises various horizontal- and vertical-shaft impact mills. All of them are based on the impact crushing principle. Recycling machines are selected according to the respective feed material and the required final quality.

In the case of the BHS impact mill of type PM with a horizontal shaft, the feed material is inserted into the crushing chamber via an inlet shaft; there, the material is impacted by a high-speed rotor, which accelerates it against the impact walls. The material is pre-crushed in the upper section of the crushing chamber, while the lower section is where the required final particle size is attained.

The BHS rotor impact mills of types RPMV and RPMX are high-performance impact crushers with a vertical shaft. The feed material is loaded into the machine from above at the center. When it impacts the rotor, the material is accelerated towards the outside by means of centrifugal forces; there, the horseshoe-shaped hammers engage it and throw it against the anvil ring, where it is crushed as a result of the impact and shearing forces. Once the material has been sufficiently reduced in size, it exits the crushing space through the ring gap and falls down through two outlet chutes.

About BHS-Sonthofen

BHS-Sonthofen GmbH is an owner-operated group of companies in the field of machinery and plant engineering, and is based in Sonthofen, Germany. The company offers technical solutions for mechanical process engineering, concentrating primarily on mixing, shredding, recycling and filtration. With more than 350 employees and several subsidiaries, BHS-Sonthofen has a global presence.

The Recycling Technology division offers a broad range of machines and plants for the recycling industry. The product portfolio comprises recycling machines for treating as well as pre- and post-shredding a diverse range of recyclable and waste materials using crushing and cutting technology. This includes scrap, shredder residual fractions, slag and incinerator bottom ash as well as tires, cables, refuse-derived fuels and domestic, commercial and industrial waste. BHS also plans, engineers and implements complete, turn-key recycling plants for its customers.

For further information please visit: www.bhs-sonthofen.de

Firmenkontakt
BHS-Sonthofen GmbH
Roland Schmid
An der Eisenschmelze 47
D-87527 Sonthofen, Germany
+49 8321 6099-231
press@bhs-sonthofen.de
http://www.bhs-sonthofen.de

Pressekontakt
VIP Kommunikation
Regina Reinhardt
Dennewartstr. 25-27
52068 Aachen, Germany
+49.241.89468-24
reinhardt@vip-kommunikation.de
www.vip-kommunikation.de

Environment Energy

BHS-Sonthofen: Sand with maximum grain size 300 µm

Treatment of sand for dry mortar plants: Rotor impact mills are meeting extraordinary demands in Thailand

BHS-Sonthofen: Sand with maximum grain size 300 µm

BHS rotor impact mill of type RPM 1513 with 12 hammers and 200 kW drive power.

The BHS rotor impact mills of type RPM are becoming more and more popular for the production of sand for dry mortar. They have become the standard in certain countries for the production of extraordinarily fine sand.

The BHS rotor impact mills produce well graded sand in the proper shape with optimal grading curves which are exactly adapted to the „dry mortar“ application. The good cubicity of the sand grains is crucial for enabling the mortar to be processed easily and for ensuring its good pumping capacity.

These properties have contributed to the fact that a large number of dry mortar plants worldwide are operated with BHS machines. One of the most important sales markets is Southeast Asia. Dry mortar in Southeast Asia is often not only used as plaster for outdoor and indoor surfaces or as masonry mortar or screed, but rather especially for fine finishing plasters. In contrast to Germany, colored plasters are frequently used in Thailand, as are rough plasters, which have a particularly decorative structure and are coated without priming.

The requirements for the fineness of these products and thus for the properties of the sand are equally extraordinary. Particularly high-grade products are manufactured specially in Thailand, where sand having a grain size between 90 and 300 µm is used. A grain with a half millimeter diameter in Thailand is already considered a coarse grain.

Crushing the rocks and sifting out the oversized grains is not sufficient to achieve the specified grading curve. The crushed rock must instead be selectively broken down into fractions and then put back together into a precisely defined grading curve in accordance with prescribed formulas.

Rotor impact mills have particularly proven themselves here, since the properties of the discharged product can be precisely set by adjusting the circumferential speed of the rotor and the width of the annular gap. This makes it possible to produce sand with grading curves which precisely conform to the specification.

Twelve BHS rotor impact mills are currently operating on the premises of Thailand’s leading dry mortar manufacturer, Siam Mortar, with ten more already having been delivered and set for commissioning in 2016. BHS delivered three additional machines for a project with another Thai manufacturer – also for dry mortar.

Moreover, Siam Mortar is operating four BHS VSI rotor centrifugal crushers of type RSMX for the crushing of granite – also for the production of dry mortar sand. In brief, more than 30 BHS machines are operating in the dry mortar industry in Thailand.

Philipp Parnitzke, BHS Area Sales Manager for Asia and the Pacific, explains the success in Thailand: „Our unique selling point is the fact that the rotor impact mills produce sand with cubical grain shape in finely graded fractions having precisely the grading curve required for dry mortar sand. It meets the requirements of our Thai customers exactly. Moreover, they can be serviced easily and quickly and exhibit little wear in proportion to their high production output.“

The rotor impact mills from Sonthofen have become the standard in Thailand. This is proven, for example, by the fact that Siam Mortar awards contracts for new dry mortar plants to various plant constructors, but still uses the BHS rotor impact mills in every single project.

The crushing of the feed material can be selectively controlled by variation of the rotor’s circumferential speed on the one hand, and by changing the gap width between the rotor and the anvil ring on the other hand. The impact hammers can be adjusted with just a few hand movements.

Digression: The global shortage of sand

Sand is becoming a scarce product worldwide. Even desert regions must purchase sand from other countries, which must be shipped thousands of miles. In certain regions, the shortage of sand is so blatant that certain states have banned its export.

The reason for the shortage is the fact that the shape and size distribution of natural sand, which is found, for example, in desert sand, make it unsuitable as a building material. It also contains contaminants and must be extensively washed, treated and dried, which drives the costs upwards.

The BHS rotor impact mill, frequently referred to in professional circles as the „Sandmaker“, will not solve the problem, but will alleviate it somewhat. It produces crushed sand with a cubical grain shape from rocks, which is very well suited as an additive for concrete or for the production of other building materials. The machines convert up to 70 tons of rock per hour into sand.

Background: The BHS rotor impact mill of type RPM

Mineral plaster and dry mortar contain lightweight and fine rock grains which are either natural or industrially produced by crushing machines such as rotor impact mills.

The BHS rotor impact mill produces excellently shaped fine cubical crushed sand, making it particularly suited for the crushing of rocks. It is best suited for the processing of dry mortar.

The BHS rotor impact mill is a high-power crushing machine with a vertical shaft. The rotor is shaped like a ring and equipped with horseshoe-shaped hammers. This unique impeller rotor in combination with the toothed anvil ring achieves selective crushing and an outstanding grain shape. The mill is suitable for the crushing of all lightly to moderately abrasive minerals with a maximum feed material of up to 56 mm.

Intensive impact and shear crushing occurs between the horseshoe-shaped impact hammers and the toothed anvil ring. The machine can be adjusted to your requirements in an optimum manner using the rotor speed and the variable annular gap.

The BHS rotor impact mill achieves a sand yield of up to 80%, depending on the hardness and grain size of the feed material.

The function

The feed material is fed into the machine from above using the central input nozzle. When it hits the rotor, it is accelerated outwards by the centrifugal forces, struck by the horseshoe-shaped impellers, and hurled against the anvil ring. Here, the crushing takes place by means of the impact and shearing effect. The material recoiling from the anvil ring hits the hammers again, where it is crushed by the repeat impact and slung back against the anvil ring. This process is repeated several times and causes the intensive, multiple strain on the feed material. The material leaves the rotor through the gap between the rotor and the anvil ring and falls downwards through the two discharge chutes.

The mill can be alternately operated with clockwise and counterclockwise rotation, which reduces the wear on the hammers.

BHS-Sonthofen at bauma 2016
(München, April 11-17, 2016):
hall B2 stand 449

About BHS-Sonthofen

BHS-Sonthofen is an owner-operated group of companies in the machinery and plant engineering field, based in Sonthofen, Germany. The company offers technical solutions for mechanical process engineering, concentrating primarily on mixing, crushing, recycling and filtration. With more than 350 employees and several subsidiaries, BHS-Sonthofen has a global presence.

The Crushing Technology division manufactures impact crushers and mills with vertical and horizontal shafts, which are used for processing mineral substances, e.g. in quarries, gravel works and mining.

For more information, see www.bhs-sonthofen.de.

Firmenkontakt
BHS-Sonthofen GmbH
Roland Schmid
An der Eisenschmelze 47
D-87527 Sonthofen, Germany
+49 8321 6099-231
press@bhs-sonthofen.de
http://www.bhs-sonthofen.de

Pressekontakt
VIP Kommunikation
Regina Reinhardt
Dennewartstr. 25-27
52068 Aachen / Germany
+49.241.89468-24
reinhardt@vip-kommunikation.de
www.vip-kommunikation.de

Environment Energy

BHS-Sonthofen: Creating value from overburden

Economical alternative to wet processing of clay-and-rock mixtures

BHS-Sonthofen: Creating value from overburden

The Combimix system of type DKXC in a CEMEX France treatment plant

The dry Combimix process developed by BHS-Sonthofen removes clay adhesions from screen waste produced in quarries and gravel pits. Operators report that they are able to convert more than 90% of contaminated feed material into salable rock grade using the Combimix system.
At the same time, the dry process significantly reduces water, energy and material costs.

Many quarries contain large quantities of material contaminated with clay that has not been possible to be processed economically up to now. Frequently, the material has to be dumped at considerable expense as mining overburden.

However, wet treatment is one method that allows this material to be used. Washing and subsequent water treatment as well as sludge disposal is extremely costly. The process often fails because many quarries lack access to the volumes of water required. Dry processing in conventional continuous mixers using quick lime is also been problematic because the retention times of the material in the mixer are so short that the clay cannot blend adequately with the lime.

The solution: Variable retention time

The patented BHS Combimix system developed by BHS-Sonthofen offers an economical alternative and its practical suitability has already been proven in several quarries. The basic principle has been known for years but it has not been possible to implement the system due to various limitations in mixing technology: Mixing clay with quick lime changes the properties of the clay, which can then be reliably separated from the rock.

For the first time, twin-shaft continuous mixers of type DKXC allow regulation of the retention time of the material in the mixer within broad limits. The clay has enough time to mix intensively with the lime and detach from the rock. The intensive movement of material during the mixing process also assists the cleaning process.

After screening, the feed material is so clean that it is no longer classed as waste and can be sold. Grains greater than 5 mm in diameter that are largely free of clay can now be further processed in the gravel quarry. Grains less than 5 mm in diameter form a lime/clay mixture that can be sold to the agriculture industry, for example.

Combination of batch and continuous mixers

The Combimix process is based on the combination of twin-shaft batch and continuous mixers manufactured by BHS-Sonthofen. Unlike traditional continuous mixers, the retention time of the mixture in the Combimix system can be regulated within broad limits – from less than 30 to more than 100 seconds.

BHS regulates the retention time via a gate on the underside of the mixing trough. The company is the only manufacturer that offers a trough with this design. Extracted material is replaced with an equivalent volume of feed material. Continuous measurements are taken during this process to monitor the weight of the mixer. The quick lime is metered by a screw conveyor inside the mixer according to the clay content in the feed material in a range of less than one or a maximum of five percent of the feed quantity.

Together with the long retention time, the established three-dimensional mixing principle of the BHS-Sonthofen twin-shaft mixer makes an important contribution to achieving good results: The lime is mixed intensively with the clay so that the treated clay reliably separates from the rock. Costs for supplying water, reslurrying, filtering and disposing of the slurry are no longer incurred because the material is treated dry.

BHS-Sonthofen manufactures different versions of mixer for throughputs between 85 and 1000 t/h. The grain size of the feed material can range up to 150 mm, depending on the mixer size.

Practical experience

BHS has installed the Combimix system in several quarries. One facility has been operating extremely successfully for several years in a quarry owned by the company Cemex based in France. Before the system was installed, more than 100,000 t of rock/clay mixture from the quarry had to be dumped every year. More than 90% of contaminated feed material is now sold as rock grade thanks to the Combimix system.

Jean-Serge Peret, plant manager at the Chateaubourg quarry owned by Cemex, is extremely pleased about the significant reduction in costs: „Before the mixer was installed, we had to break down 400,000 t of rock each year to obtain 300,000 t of salable material. The new procedure means we only require 330,000 t to achieve the same delivery quantity.“

Info: The benefits at a glance:

Compared with wet treatment:
-Processing of the entire material
-No introduction of moisture in the aggregates
-No wet screening, no sludge treatment
-No water consumption

Compared to conventional continuous mixers:
-Processing of the entire material
-Long retention time in the mixer
-Minimal consumption of quick lime
-High throughput
-Minimal wear

About BHS-Sonthofen

BHS-Sonthofen is an owner-operated group of companies in the machinery and plant engineering field, based in Sonthofen, Germany. The company offers technical solutions for mechanical process engineering, concentrating primarily on mixing, crushing, recycling and filtration. With more than 350 employees and several subsidiaries, BHS-Sonthofen has a global presence.

The Mixing Technology division produces batch and continuous mixers and offers a full range of process technology for mixing. The twin-shaft batch mixer, which is considered a global benchmark in the concrete industry, is an important product.

For more information, see www.bhs-sonthofen.de.

Firmenkontakt
BHS-Sonthofen GmbH
Roland Schmid
An der Eisenschmelze 47
D-87527 Sonthofen, Germany
+49 8321 6099-231
press@bhs-sonthofen.de
http://www.bhs-sonthofen.de

Pressekontakt
VIP Kommunikation
Regina Reinhardt
Dennewartstr. 25-27
52068 Aachen / Germany
+49.241.89468-24
reinhardt@vip-kommunikation.de
www.vip-kommunikation.de

Environment Energy

IFAT premiere: New ball shaper for fine fractions containing metal reclaims more recyclable materials

Reclamation of recyclable materials from e-scrap, shredder residues and slag

IFAT premiere: New ball shaper for fine fractions containing metal reclaims more recyclable materials

BHS rotor impact mills of type RPMV/RPMX are high-performance crushers

At IFAT 2016, BHS-Sonthofen unveiled the new rotor impact mill of type RPMX for separating composite parts and shaping metals from recycling products such e-scrap, shredder residues (ASR) and slag into balls. The new RPMX is a further development of the established rotor impact mill of type RPMV and generates finer fractions from which recyclable materials can be reclaimed more effectively. It enables the efficient reclamation of materials such as stainless steel and cable strands, which were previously considered problematic.

The rotor impact mill of type RPMV is an established recycling machine used for separating composites, crushing brittle components and shaping ductile components into balls in a wide variety of applications. The new rotor impact mill of type RPMX from BHS-Sonthofen is a valuable addition to the existing range of systems for recycling residual materials.

The gap between the grinding tools and the anvil ring on the new machines is much smaller: The gap width is only 5 mm. In combination with higher circumferential speeds, they generate finer fractions and intensify the ball-shaping effect, whereby a much higher proportion of materials is reclaimed than before.

One application example is the disaggregation and shaping of wires and strands into balls. Previously, conventional sorting systems were not able to separate these wires and strands because long thin parts evaded the separation process in air separator tables or non-ferrous separators. The RPMX compacts and shapes individual parts into balls so that they can then be separated cleanly. The machine is also suitable for handling pure cable fractions.

The „Zurik“ fraction of mixed shredder residues containing between 30 and 85% metal (predominantly stainless steel but also copper and aluminum) can now be efficiently separated into individual components after being processed in the RSMX.

The technology in detail

The input material is fed into the machine from above by means of the central input tube. When it hits the cover plate of the rotor, it is accelerated outwards by the centrifugal forces and falls into the grinding gap between the horseshoe-shaped impact hammers and the anvil ring. Here, it is struck by the impellers and thrown against the outer wall. The material passes from top to bottom all the way through the gap between the impact hammers and the stationary ribs on the anvil ring. During this process, it is highly stressed by impact, shock and shearing forces that cause the composite parts to separate. The brittle components are crushed while multiple stresses shape the ductile components into balls. The material leaves the rotor through the gap between the rotor and the anvil ring and falls downwards through the two discharge chutes.

The new rotor impact mill from BHS-Sonthofen is available in two versions: the RPMX 1116 with a diameter of 1.10 m, eight impact hammers and a maximum drive power of 200 kW, and the larger RPMX 1516 with a diameter of 1.50 m, twelve impact hammers and a maximum drive power of 315 kW.

Pre-shredding

Object fractions between 300 and 500 mm in size are pre-shredded by an BHS Rotorshredder of type RS, which generates fractions smaller than 30 mm suitable for the rotor impact mill. Before the material can be further processed in the RPMX, an air sifter removes any potentially harmful components.

Background: BHS rotor impact mills

Also known as „ball shapers“ in the industry, the BHS rotor impact mills from the RPMV series are high-performance crushers with a vertical shaft for applications in the recycling industry. The ring-shaped rotor is fitted with horseshoe-shaped hammers. In combination with the toothed anvil ring, this unique impeller rotor is able to selectively crush composite parts.

Materials that have different physical properties are separated from one another in the machine and entangled materials are singled out. At the same time, the machine shapes the ductile metals into balls and cleans them. In the subsequent process steps, they are much easier to separate than elongated metal parts, which can become entangled and matted.

About BHS-Sonthofen

BHS-Sonthofen is an owner-operated group of companies in the machinery and plant engineering field, based in Sonthofen, Germany. The company offers technical solutions for mechanical process engineering, concentrating primarily on mixing, crushing, recycling and filtration. With more than 350 employees and several subsidiaries, BHS-Sonthofen has a global presence.

The Recycling Technology division offers a wide range of machines and systems for the recycling industry. The product spectrum covers the processing of brittle-hard waste materials such as electronic waste, slag, shredder residual fractions etc., as well as resilient materials such as tires, cables, and refuse-derived fuels.

For more information, see www.bhs-sonthofen.de.

Firmenkontakt
BHS-Sonthofen GmbH
Roland Schmid
An der Eisenschmelze 47
D-87527 Sonthofen, Germany
+49 8321 6099-231
press@bhs-sonthofen.de
http://www.bhs-sonthofen.de

Pressekontakt
VIP Kommunikation
Regina Reinhardt
Dennewartstr. 25-27
52068 Aachen / Germany
+49.241.89468-24
reinhardt@vip-kommunikation.de
www.vip-kommunikation.de

Science Research Technology

BHS-Sonthofen: More than a million refrigeration units cost-effectively recycled

BHS-Sonthofen: More than a million refrigeration units cost-effectively recycled

Internal view of the BHS Rotorshredder of type RS

Rotorshredder proves its worth in mechanical crushing

The BHS Rotorshredder has proven its worth in practice in the mechanical crushing of refrigeration units at the recycling company H.J. Hansen A/S in Odense, Denmark. Since its commissioning, the machine has processed more than a million units. The appraisal after five years is highly positive: energy and wear-related costs are nearly half of those from other processes.

In 2007, H.J. Hansen A/S, one of the largest recycling companies in Denmark, planned the construction of a new plant with the capacity to recycle approximately 200,000 household refrigeration units, constituting a large part of Denmark“s annual yield. The units were to be recycled in single-shift operation, according to material type and in an environmentally friendly and cost-effective manner. From the start, H.J. Hansen had the goal of processing at least 100 units per hour – nearly twice as many as was usual in the recycling industry.

Its favorable experience in the crushing and disaggregation of mixed electrical waste led H.J. Hansen to order a BHS Rotorshredder of type RS 3218. This machine was the largest Rotorshredder built thus far and was the first for crushing refrigeration units.

With a diameter of 3,200 mm and a height of 1,800 mm, the working chamber can handle refrigeration units measuring up to 1,000 x 1,200 x 2,000 mm (W x D x H) and weighing up to 100 kg. This means that even large refrigerator-freezer units are crushed in one step, without the need for pre-crushing.

Once the components made of glass or wood, plastic films, electric cables, condensers, mercury switches, and compressors have been manually removed, a conveyor belt feeds the refrigeration units into the working chamber of the Rotorshredder. The chamber contains rotating hammers fastened to a high-speed vertical shaft. The Rotorshredder crushes the units through impact, punching and shear forces.

The solids are automatically sorted into ferromagnetic and non-ferromagnetic parts (predominantly aluminum and copper), plastics and polyurethane foam. The blowing agents released during crushing as well as the separated PU foam are disposed of entirely in accordance with the pertinent regulations.

Positive results

The plant has been in continuous single-shift operation since 2008 and has worked more than 8,000 hours to date. It still meets all the requirements defined at the start of the project, and does even more: it currently processes around 140 units – or approximately 6.8 tonnes – per hour. This corresponds to an average crushing time of 25 seconds per unit. The authors know of no other plant which achieves a higher throughput rate.

A test of 1,000 units carried out by a Swedish supplier of scrap refrigeration units in 2013 confirmed the plant’s performance, both in terms of compliance with permitted CFC emissions as well as the quality of the accurately separated final products.

Low costs

The excellent crushing performance and short processing time result in a very high degree of energy efficiency and therefore low energy costs. The average electrical power requirement is only 120 kW. This results in a specific energy consumption of only 18.5 kWh per tonne.

The wear-related costs are also extremely low in comparison to other crushing machines: they are less than three euro per tonne. Moreover, maintenance costs are low. As they do not cut but rather function by force of impact, the rotating hammers do not need to be adjusted or sharpened. Only a daily visual inspection is necessary.

Summary

With this plant, H.J. Hansen and BHS-Sonthofen have proven that refrigeration units can be recycled safely and inexpensively with the Rotorshredder. Due to the Rotorshredder“s low operating costs, H.J. Hansen can run the entire plant not just economically but also profitably.

Outlook

The Rotorshredder of type RS 3218 can crush up to 150 refrigeration units per hour. In three-shift operation, it could thus achieve a much higher performance of approximately 3,250 refrigeration units per day, and more than 800,000 units per year.
With an expanded sorting facility, it is also possible to process electrical and electronic waste (WEEE) in the same plant as the refrigeration units.

The IC process

For the treatment of gases in the refrigeration units, BHS has recently developed the IC process, a new technology for treating refrigeration units containing CFCs or hydrocarbons.

The central machine in this process is once again the BHS Rotorshredder. The refrigerants and blowing agents that are recaptured during the process undergo thermal-catalytic conversion and are completely transformed into harmless substances such as water vapor, carbon dioxide and dilute acids or saline solutions. Beyond this, the process allows for major cost savings.

The IC process also has major advantages in terms of efficient energy use: pentane, which is used increasingly in modern refrigeration units, has a substantial energy content and can thus assist the thermal treatment of the gases, up to the point of thermally self-sufficient operation. Compared to conventional plants, the process achieves remarkably large cost savings.
Bildquelle:kein externes Copyright

About H.J. Hansen A/S

The H.J. Hansen Group is a family-owned group of companies, with roots stretching back six generations. The company was established in 1829 as a grocery shop in Odense, Denmark and since then has developed into an international supplier of high-grade materials – in particular metals. The core business is the conversion of recyclable materials into marketable products.

The shredder plants in Odense and Hadsund process up to one million tonnes of scrap with a maximum thickness of 16 mm per year. The plant has a capacity of more than 250 vehicles per hour. The final product is ferritic scrap with a purity of 99 percent, which can then be re-melted. H.J. Hansen also sells metals and plastics for other recycling applications.

The plant in Odense processes white goods such as refrigerators and freezers and has a capacity of more than 1,000 units per day in single-shift operation. In Trollhättan, Sweden, H.J. Hansen operates a granulation plant for cables.

About BHS-Sonthofen GmbH

BHS-Sonthofen GmbH, headquartered in Sonthofen in Southern Germany, is an owner-operated group of companies in the field of machine and plant engineering. The company offers technical solutions in the field of mechanical process engineering, with a focus on mixing, crushing, recycling and filtration. With over 300 employees and a number of subsidiaries, BHS-Sonthofen has a global presence.

The Recycling Technology division offers a broad range of machines and plants for the recycling industry. The spectrum encompasses the treatment of brittle-hard waste materials such as electronic scrap, slag, shredder residue fractions, etc. or of elastic materials such as tires, cables and refuse-derived fuels.

For more information, visit www.bhs-sonthofen.de.

BHS-Sonthofen GmbH
Roland Schmid
An der Eisenschmelze 47
D-87527 Sonthofen, Germany
+49 8321 6099-231
press@bhs-sonthofen.de
http://www.bhs-sonthofen.de

VIP-Kommunikation
Regina Reinhardt
Süsterfeldstrasse 83
52072 Aachen, Germany
+49.241.89468-24
reinhardt@vip-kommunikation.de
http://www.vip-kommunikation.de

Environment Energy

AMNI shredding machines for recycling applications

AMNI shredding machines for recycling applications

Managing Director Dennis Kemmann (right) together with Udo Becker

Treatment of all kinds of materials: Shredding technology rounds off BHS-Sonthofen“s product range

BHS-Sonthofen has acquired all technical designs and documents, patent rights and trademark of the recycling technology division of AMNI Maschinenbau GmbH in Iserlohn (Germany) following its insolvency, effective from December 12, 2013. This has allowed BHS – a company known to date in the recycling sector for crushing by means of impact and shearing technology – to expand its product range into shredding technology using cutting tools. BHS thus now covers the full range of crushing and shredding technology for both brittle and elastic materials. At IFAT 2014, the company will unveil the rotor shears and granulators acquired from AMNI and upgraded by BHS.

AMNI manufactured rotor shears and granulators of various sizes for numerous customers for the treatment of electronic waste, tires, cables, refuse-derived fuels and other materials. They are robust and easy to maintain, and have a number of patented features as well.

For BHS-Sonthofen, this attractive acquisition rounds off its existing product range, as the company from Sonthofen has until now offered recycling machines exclusively based on impact and shearing technology. These machines crush the bulky input material and also achieve a selective disaggregation of composite materials. With rotor shears and granulators, BHS now also manufactures machines which are suitable for recycling elastic materials. These include domestic, industrial and commercial waste, cables, and car and truck tires – extending even to tires for construction machinery with a diameter of up to 3 m. The machines are also able to handle paper and cardboard, for example books or files, as well as wood and textile waste.

Since December 2013, Udo Becker, head of the former recycling technology division of AMNI, has been in charge of the further development and manufacture of the BHS shredding machines as Business Development Manager in Sonthofen. He is responsible for ensuring continuous support for operators of rotor shears and granulators. The maintenance and repair of existing plants and the supply of spare parts to former AMNI customers will be carried out by the BHS service team from now on.

Dennis Kemmann, Managing Director of BHS-Sonthofen, sees an important addition to the company“s range with this new product segment: „We can now offer all commercially available crushing and shredding processes in the field of recycling with our own machines. Each technology has specific advantages depending on the application. This is the ideal solution for many input materials, for example for mixtures of different materials. For the selective crushing of brittle-hard materials, we will continue to implement impact and shearing technology, and the rotor shears and granulators will shred the predominantly elastic materials. The advantage for our customers is clear: regardless of the material to be recycled, we offer the optimal solution from a single source.“

The proven VR rotor shears – now upgraded by BHS – are mostly used for pre-shredding at the beginning of each recycling process. They are equipped with two shear shafts which rotate at approx. 18 rpm. The machines are designed for a throughput rate of between 6 and 30 tons per hour.

The NG series granulators are used for granulating and separating composite materials as well as for the secondary shredding of difficult or large-volume materials – for example electronic waste and non-debeaded tires. Compared to the rotor shears, the shear shaft rotates significantly faster, at up to 420 rpm. With their high-torque drive and large inertia masses, the granulators develop very high shredding forces.

The technology in detail

Rotor shears
In addition to a good cutting performance, high availability was at the fore in the development of the machines: the housings consist of a one-piece, extremely robust and warp-resistant welded steel construction. The cutters are hard faced, allowing them to achieve a remarkably long service life. The scrapers can be replaced individually.

The two industrial gear units, which drive the rotor shafts in opposite directions, are torque-buffered. This relieves the load on the shear shafts and drive components if solid extraneous materials enter the machine. In case of overload, a current-based reversing control system protects the machine from damage.

The quick-change system for the shear shafts also contributes to short standstill times. Owing to the bearing shell bridging system, the shafts of the rotor shears can be exchanged within just four hours. This task now takes less than 20 percent of the time previously required.

The control system has a modem for remote maintenance. It can also be equipped with an electronic consumption optimizer, which balances the power, torque and current requirements. In this way, only the power that is actually required at any given time is developed – energy costs decrease and the plant functions much more economically.

Granulators
The granulators shred pre-crushed or pre-treated input materials. The NG series machines are single-shaft granulators in which a rotor equipped with fly cutters shreds the materials on the counter-blades of the stator. The rotor is equipped with a belt flywheel and can be controlled within a speed range from 0 to 420 rpm.

Special design features ensure excellent cost-effectiveness and durability. These include the extremely robust, external rotor bearings, the modular stator with blade segments which can be individually adjusted, and wear compensation with linear advance of the stator blades. In addition, the hydraulically retractable sieve can be exchanged simply without the need to dismantle the discharge equipment.

BHS-Sonthofen at IFAT (May 5 to 9, 2014 in Munich):
Hall B2, booth 339/444

About BHS-Sonthofen

BHS-Sonthofen GmbH, headquartered in Sonthofen in South Germany, is an owner-operated group of companies in the field of machine and plant engineering. The company offers technical solutions in the field of mechanical process engineering, with a focus on mixing, crushing, recycling and filtration. With over 300 employees and a number of subsidiaries, BHS-Sonthofen has a global presence.

For more information, visit www.bhs-sonthofen.com.

Kontakt
BHS-Sonthofen GmbH
Roland Schmid
An der Eisenschmelze 47
D-87527 Sonthofen, Germany
+49 8321 6099-231
press@bhs-sonthofen.de
http://www.bhs-sonthofen.de

Pressekontakt:
VIP-Kommunikation
Regina Reinhardt
Süsterfeldstrasse 83
52072 Aachen, Germany
+49.241.89468-24
reinhardt@vip-kommunikation.de
http://www.vip-kommunikation.de

Science Research Technology

BHS-Sonthofen: Twin-shaft batch mixer for the Kressbronn concrete plant

BHS-Sonthofen: Twin-shaft batch mixer for the Kressbronn concrete plant

The twin-shaft batch mixer provides a lot of space on the new mixer platform.

Mixing technology in ready-mixed concrete plants: From disassembly to the first delivery in just three weeks

After more than 30 years, the mixing and weighing equipment at the Kressbronn ready-mix concrete plant had reached the end of its technically and economically useful life. Comprehensive modernization was called for. Previously, all seven plants operated by the group in the Lake Constance region were equipped with pan mixers. The group of companies in which the Kressbronn concrete plant is integrated has now installed a BHS twin-shaft batch mixer for the first time during modernization of the concrete plant.

The principal criteria applied for selection of the mixing system were excellent homogeneity of the mixtures, short mixing cycles and a future-proof design, along with favorable operating costs, low wear and reliable service. Assurance of the completion and commissioning deadline was another crucial factor besides the investment and operating costs. The outcome of an intensive selection process was that the BHS mixer was the best choice for the application at the Kressbronn ready-mix concrete plant. The positive experience with this mixing system reported by comparable plants also played a key part in endorsing the decision in favor of the BHS twin-shaft batch mixer.

The central element of the new plant is a DKXS 2.5 twin-shaft batch mixer with a rated output of up to 2.5 m³ of compacted concrete per batch. It replaces the two pan mixers, which had each produced 1.0 m³ per batch.

Unlike pan or planetary mixers, which mix in two dimensions only, BHS twin-shaft mixers create a three-dimensional motion pattern of the entire mixture. There is also an intense exchange of materials in the turbulent zone where the two mixing cycles overlap. They additionally support high variability in production, allowing highly uniform mixtures to be produced even in small batches. Moreover, they achieve low specific energy consumption thanks to optimal conversion of the energy input into intensive relative motion of the entire mixture.

On account of their higher filling level, BHS twin-shaft mixers are much more compact than other mixing systems, usually allowing larger mixer types to be installed in the available space in case of plant modifications.

Individual solution with modular system

Drawing on the modular system of the DKX series, which offers a host of configuration options based on a broad selection of drives, mixing tools, discharge openings, wear liners, sensors and comprehensive accessories, BHS configured a mixer for the Kressbronn plant that is specifically tailored to the individual requirements.

As part of the modernization project, the entire weighing, metering and control system was adapted to the latest state of the art and safety regulations, and a new mixing and weighing platform was installed.

On completion of the comprehensive overhaul of the control system as the final step in the modernization, the new plant produced its first concrete on Monday, February 20.

Initial experience

In practical operation, the new plant mixes up to 35 batches per hour, achieving an output of almost 90 m³ in this period. Thanks to the better mixing effect of the BHS mixer, the mixing and metering times for the individual formulas are currently being further optimized.

Truck mixers with a capacity of 7.5 m³ are now loaded with just three batches. The modernization has virtually doubled the output of the mixing plant owing to the short mixing cycles, the balanced relationship between the batch size and the truck mixer volume, and the associated reduction in the number of batches per vehicle.

The mixer can also produce homogeneous partial batches of less than ten percent of the mixer capacity. Almost even more important here is that these quantities are also discharged in a short time due to the spiral-blade mixing mechanism – a key aspect particularly for ready-mix concrete plants in rural areas, where small and extra-small volumes are an everyday occurrence.

About BHS-Sonthofen

BHS-Sonthofen GmbH offers innovative and efficient mechanical process solutions for mixing, crushing, recycling and filtration applications.

Since development of the first twin-shaft batch mixer in 1888, the company has demonstrated its innovative strength time and again with numerous new products. DKX twin-shaft batch mixers are regarded as the global benchmark where demanding mixing applications in the concrete industry are concerned.

For more information, visit www.bhs-sonthofen.de.

Kontakt
BHS-Sonthofen GmbH
Roland Schmid
An der Eisenschmelze 47
D-87527 Sonthofen, Germany
+49 8321 6099-231
press@bhs-sonthofen.de
http://www.bhs-sonthofen.de

Pressekontakt:
VIP-Kommunikation
Regina Reinhardt
Süsterfeldstrasse 83
52072 Aachen, Germany
+49.241.89468-24
reinhardt@vip-kommunikation.de
http://www.vip-kommunikation.de

Science Research Technology

BHS-Sonthofen: New twin-shaft mixers for dry building materials

BHS-Sonthofen: New twin-shaft mixers for dry building materials

The twin-shaft batch mixers of the new DMX series.

Individual solutions for a wide range of mixtures

At BAUMA 2013, BHS-Sonthofen unveils twin-shaft mixers of the new DMX series. They are adapted to the special requirements of mixing dry materials, such as cement, dry mortar, bonding compounds and dry shotcrete.

The new mixers are specially tailored to the production of dry material mixtures. They are suitable for mixtures containing all manner of aggregates, cement, small dry components, plastic fibers and cellulose. With an extensive modular system and various options, they can be customized to the products of the user, from fine-grained materials such as cement to mortar mixtures with coarse particles up to 8 mm in size. BHS offers a range of machines with throughput rates of up to 300 t per hour.

Compared with single-shaft mixers, they offer considerably better mixing with short mixing cycles. Furthermore, the DMX mixers are more compact than single-shaft mixers and also represent good value for money.

Mixers from BHS have proven their worth in numerous applications in the cement industry and in the production of dry mortar. One recent example is the replacement with a BHS mixer of an intensive mixer in a dry mortar plant.

Homogeneous mixtures

BHS has developed the DMX series on the basis of the twin-shaft batch mixers, which have been used in thousands of concrete mixing applications.

The mixing mechanism consists of mixing tools that are arranged in the form of a discontinuous spiral on each of two counter-rotating mixing shafts. They generate a three-dimensional spiral motion with intensive exchange of material in the turbulent zone of overlap between the two mixing cycles. Counterblades positioned at the ends of the shafts deflect the material in such a way that all material is repeatedly routed back into the mixing process. Due to the three-dimensional motion and the recirculation of the material, there are no dead zones anywhere in the mixing trough, unlike with single-shaft mixers.

Thanks to the sophisticated mixing mechanism with the directed three-dimensional motion pattern, the speed of the mixer can be less than that for comparable single-shaft or intensive mixers while still producing a greater mixing effect. This considerably reduces the energy consumption and is also gentler on sensitive components in the material to be mixed, such as perlite, styrofoam or expanded clay – the particles are not crushed.

Compared with other mixing systems, twin-shaft mixers are filled to a much greater extent, making them more compact for a comparable throughput rate. In the case of new plants, these mixers are thus ideal because of their small dimensions; for modification to existing plants, they allow the installation of a more powerful mixer in the existing space.

Custom adaptation

Since dry building materials encompass a wide range of aggregates, cements and admixtures, different application-specific drive variants are available for the mixers with different speeds and different mixing tools. These can be individually configured according to the application, e.g., for abrasive or adherent input materials.

Due to the very good mixing effect, agitators, which generally have high power consumption and rates of wear, only need to be used for their actual intended purpose: disintegrating undesired agglomerations.

An optional sampling device is available, allowing the quality of the mixture to be checked at any time.

Residue-free discharge

Since many manufacturers produce different products in succession, a residue-free discharge of the trough is important. In the case of the DMX, this is carried out by means of large, hydraulically operated discharge door wings that are available in two variants for fine and coarse-grained mixture products. The discharge door wing for fine-grained mixtures has a seal to prevent fine-grained materials, such as cement, from escaping; it is also waterproof.

The mixing shafts are fitted with special sealing air seals.

Excellent resistance to wear

Depending on the abrasiveness of the mixture, various wear liners are available. All wearing parts in the mixer, such as mixing arms or blades, are screw-fitted and are thus easy to adjust or exchange. This simplifies maintenance and increases the availability of the plant.

Tests in our BHS technical center

Every dry material mixture has different characteristics; for this reason, BHS conducts tests at its in-house technical center on request. These tests give the customer the certainty that his outlay is well invested and that the new plant is future-proof.

BHS-Sonthofen at BAUMA in Munich, April 15 to 21, 2013:
Hall B2, booth 325/420

About BHS-Sonthofen

BHS-Sonthofen GmbH offers innovative and efficient mechanical process solutions for mixing, crushing, recycling and filtration applications.

Since development of the first twin-shaft batch mixer in 1888, the company has demonstrated its innovative strength time and again with numerous new products. DKX twin-shaft batch mixers are regarded as the global benchmark where demanding mixing applications in the concrete industry are concerned.

For more information, visit www.bhs-sonthofen.de.

Kontakt
BHS-Sonthofen GmbH
Roland Schmid
An der Eisenschmelze 47
D-87527 Sonthofen, Germany
+49 8321 6099-231
press@bhs-sonthofen.de
http://www.bhs-sonthofen.de

Pressekontakt:
VIP-Kommunikation
Regina Reinhardt
Süsterfeldstrasse 83
52072 Aachen, Germany
+49.241.89468-24
reinhardt@vip-kommunikation.de
http://www.vip-kommunikation.de