Krupp Polysius Ag

Other

Walter Holz

Ludger Lohnherr

Ludger Kimmeyer

Heinrich Henne

Werner Schoneich

Bernhard Zigan

Peter Rittscher

Fresh raw material is delivered to a crushing zone for crushing. Beforehand, fine particles are separated from the raw material by means of an airstream and directed into the housing of the crusher where they are entrained by an independent gas stream that conveys crushed fines upwardly to a separator also located within the housing. The separator removes fine particles from the system and returns the remaining, relatively course tailings material to the crushing zone through a tailings return chute. At least a portion of the material exiting the tailings return chute is subjected to a secondary separation treatment to capture additional quantities of fine particles before entering the crushing zone. The captured tailings material may be mixed with the fresh raw material else reintroduced into the top of the separator to receive the secondary separation treatment.

Apparatus and method for the crushing of material for grinding of

The invention relates to a method and to apparatus for crushing brittle material for grinding using a roller mill and a material bed roll mill for crushing the material for grinding falling downwards over the edge of the grinding track before it is delivered to the sifter. By the use of a material bed roll mill a considerable increase in the throughput capacity of the apparatus and a significant saving of energy can be achieved.

Method and apparatus for crushing material for grinding

The invention relates to grinding apparatus and a method of operating such apparatus in which the gas speed in the nozzle ring of the mill is altered as a function of the power consumption of the bucket conveyor so that the quantity of material conveyed by the bucket conveyor and the gradation of grain sizes thereof are kept constant. A control circuit alters the material supply to the mill when the gas speed in the nozzle ring exceeds a predetermined maximum value or falls below a predetermined minimum value.

Method of operating grinding apparatus and grinding apparatus operating

Apparatus for lubricating the sealing rings of grinding roll bearings comprises an oil-containing vessel located at a level higher than that of the grinding roll bearings and connected via an oil conduit to an annular gap between the sealing rings. The oil conduit is disp osed within an air line which delivers air to the gap.

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Beckum, Germany

Walter Holz