Krupp Polysius Ag

Lutz T Schneider

Heinrich Henne

Norbert Patzelt

Manfred Muller

Osbert R Knobloch

Gotthard Blasczyk

Karl-Heinz Dammertz

The invention relates to a grinding process and apparatus for the simultaneous production of at least two finished products of differing fineness using a ring mill. Pre-classification is carried out in the nozzle ring by adjusting the air to entrain and carry upwards relatively fine constituents. The coarser constituents are discharged downwardly by gravity and subsequently may be conveyed upwards by an elevator and subjected to a second classification in which at least a proportion is extracted as finished product.

Grinding process and apparatus

The invention relates to a method and to apparatus for the crushing of material to be comminuted by means of a material bed roll mill, in which such material is forcibly delivered in a regulable mass flow to the roll gap. In this way even materials which tend to slip on the rolls can be crushed satisfactorily. It is also possible to keep the nature of the product constant over a wide range of variations in the throughput.

Method and apparatus for the crushing of material

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Ennigerloh, Germany

Lutz T Schneider