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Idea
purpose, advantages, inventor

 

Research
comminution, material throughput, pressure distribution, modelling

 

Praxis
plant configuration, roller wear, references

 

Literature
literature survey, references

 

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Idea

Comminution in a Material Bed

The High Pressure Roller Mill, also named Roller Press, consists of two rollers with the same diameter, wich are rotating against each other with the same circumferential speed. The special feeding of bulk material through a hopper leads to a material bed between the two rollers.

 

Animation HCRM

The bearing units of one roller can move linearly and are pressed against the material bed by springs or hydraulic cylinders. The pressures in the material bed are bigger than 50 MPa. In general they achieve 100 to 300 MPa. By this the material bed is compacted to a solid volume portion of more than 80 %.

The High Pressure Roller Mill has a certain similarity to roller crushers and roller presses for the compacting of powders, but purpose, construction and operation mode are different. -  Schwechten, D. [2]

 

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© Copyright 1992, Dr. Uwe Lubjuhn, all rights reserved

Purpose
comparison with other machines

Advantages
energy saving, less wear

Inventor
Prof. Dr. Klaus Schönert