BHS-Sonthofen

Rotor impact mill (RPM)

Rotor impact mill (RPM)

The rotor impact mill is a high-performance crusher with a vertical shaft. The rotor impact mill enables you to achieve a high reduction ratio and excellent particle shape. The mill is suitable for crushing all low to moderately abrasive minerals and is therefore used predominantly in the production of sand for the concrete, asphalt and dry mortar industries.

Benefits at a glance:

•    Unique operating principle
•    Superior crushing performance
•    Selective crushing
•    Low maintenance requirements

Highlights

Superior machine technology

Unit Ready for Operation

The machine and drive train are assembled onto a base frame as a unit that is ready for installation. A large cover that can be raised hydraulically and pivoted by 360° allows unimpeded access.

Reliable Greasing

The BHS rotor impact mill is supplied with a recirculating oil lubrication system with cooling and integrated monitoring. This allows for low-maintenance, reliable operation.

Easy Maintenance and High Availability

All areas of the machine that are in contact with the crushing material are protected by wearing parts that are easy to exchange and made of materials that can be optimized for specific applications.

Vibration Absorption

The rubber spring elements between the base frame and the machine absorb vibrations generated during operation and keep them away from the support structure. Excessive vibrations are registered by an electronic vibration monitor and cause the machine to be shut down.

Production of quality sand

Unique crushing principle

The impeller rotor of the BHS rotor impact mill is the only one of its kind worldwide. The high circumferential speed of the rotor results in an almost permanent gap between the tips of the horseshoe-shaped hammers and the anvil ring. The small gap width and the high energy input due to the circumferential speed result in a very high, targeted crushing ratio.

Particle shape

Rock crushing with the BHS rotor impact mill produces high-quality crushed sand with a cubical grain shape. This is ideally suited for ensuring the workability of dry mortar, for example.

Consistent grading curve of the final product

The unique functional principle of the BHS rotor impact mill guarantees consistent grading curves. The reduction ratio is determined by the speed of rotation and the gap size. The degree of wear on the crushing tools has no negative influence on the quality of the grading curve.

Ultra-fine sand

Thanks to the narrower milling gap and the higher circumferential speed of the rotor, the material in the RPMF rotor impact mill is exposed to more intense stress. The result, in percentage terms, is a higher proportion of fine sand in the grain-size range from 0 to 2 mm.