Rotor impact mill (RPMV & RPMX)

Ball shaper

The BHS rotor impact mill is a high-performance crusher with a vertical shaft that addresses the needs of the recycling industry. The mill’s unique impeller rotor works together with a toothed anvil ring to subject the inserted material to severe mechanical stress. Material compounds are crushed and separated selectively, entangled materials are isolated, and brittle-hard materials are crushed very finely. At the same time, metals are shaped into balls and cleaned.

Functional principle of the RPMV (plan view)
Functional principle of the RPMV (plan view)

Unique crushing principle

The impeller rotor of the BHS rotor impact mill is the only one of its kind in the world. The circumferential speed of the rotor generates centrifugal forces that deliver a high energy load to the inserted material, which is intensely processed by the impact and shear forces caused by the crushing tools. As a result of the rotation, a near-permanent gap is created between the tips of the horseshoe-shaped impellers and the anvil ring. Once the material has been reduced to a size that fits through this gap, it exits the crushing zone.

The machine can be optimally adjusted to customer requirements using the rotor speed and the variable annular gap.

Functional principle of the RPMV (side view)
Functional principle of the RPMV (side view)

Two versions of the rotor impact mill

There are two versions of the rotor impact mill. The RPMV model has a proven track record as a ball shaper with a selective crushing effect in the recycling industry. The RPMX model is a turbo-ball shaper. It is used for the recovery of valuable materials that have previously been considered too fine and thus difficult to process, such as cable strands.

For both types of models, there are several machine sizes available with different performance characteristics.

Rotor impact mill of type RPMV – the ball shaper

The RPMV has proven itself in separating composites, crushing brittle components and shaping metals into balls with particle sizes from 5 to 30 mm.

Rotor impact mill of type RPMX – the turbo-ball shaper

A higher circumferential speed and the considerably smaller grinding gap characterize the RPMX. This feature set makes it ideal for ball shaping and separating composite parts with particle sizes from 0 to 15 mm.

Layout of the rotor impact mill RPMV
Layout of the rotor impact mill RPMV
Layout of the rotor impact mill RPMX with rotor cover plate
Layout of the rotor impact mill RPMX with rotor cover plate

Typical application scenarios

  • Cleaning metals and shaping them into balls
  • Exposing and shaping NF-metals into balls
  • Separating composite materials
  • Separated entangled material mixtures
  • Finely crushing brittle-hard materials
  • Shredding elastic materials into particles

Customer trials at the BHS technical center

At our BHS technical center in Sonthofen, we use the rotor impact mills of types RPMV and RPMX to perform industrial-scale tests on customer-specific materials.

References

Recycling plant for fine-grain treatment of shredder residue fractions with a rotor impact mill of type RPMV 1513
Recycling plant for fine-grain treatment of shredder residue fractions with a rotor impact mill of type RPMV 1513
RPMV 1513 rotor impact mill at a facility for treating pre-crushed electronic waste
RPMV 1513 rotor impact mill at a facility for treating pre-crushed electronic waste
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Downloads

“Rotary impact mill for recycling (RPMV & RPMX)” brochure (PDF / 2.6 MB)
“Rotary impact mill for recycling (RPMV & RPMX)” brochure

Product brochure for rotary impact mill (RPMV & RPMX) for recycling applications

Size: 2.6 MB
Technical data sheet “Rotary impact mill for recycling (RPMV & RPMX)” (PDF / 201 KB)
Technical data sheet “Rotary impact mill for recycling (RPMV & RPMX)”

Technical data describing the rotary impact mill (RPMV & RPMX) for recycling applications

Size: 201 KB

Advantages

  • Excellent crushing performance
  • Ball-shaping of metals
  • Separation of mixtures
  • Selective crushing effect
  • Easy maintenance

BHS recycling technical center

Link to tests at BHS technical center

Technical article

ASR PROCESSING - A FINE POINT TO MAKE

recycling today Global Edition
November/December 2016
November 2016
PDF (6.3 MB)
ASR PROCESSING - A FINE POINT TO MAKE

Recyclers and equipment makers can work together to maximise the efficient recovery of metals from shredding plant fines fractions.

Size: 6.3 MB

Saving Gold from Landfills - Recovery of metals from fine shredder fractions

bulk solids handling
No. 3 - 2014
September 2014
PDF (309 KB)
Saving Gold from Landfills - Recovery of metals from fine shredder fractions

Fine fractions of shredded automobile scrap and electronic equipment still contain considerable amounts of precious metals which until now have invariably been deposited in landfills. A new one-of-a-kind process allows to reclaim and sell these metals profitably.

Size: 309 KB

Recycling of resources in steel production

recovery
2 / 2014
April 2014
PDF (1.9 MB)
Recycling of resources in steel production

The slag formed during stainless steel production contains valuable raw materials which should preferably be fed back to the melt or intelligently reused. With a treatment plant at Outokumpu Nirosta in Krefeld/Germany ThyssenKrupp MillServices & Systems GmbH (TKMSS) has demonstrated that dry treatment of slag is significantly more economical and environmentally friendly than wet treatment. The central element of the plant technology is impact crushing.

Size: 1.9 MB
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