Voest-alpine Aktiengesellschaft

Manfred Zoller

Erich Pichlmaier

An internal lining for cylindrical ball mills has riffles approximately extending in circumferential direction and webs located between the riffles and further has elevations and/or depressions arranged transversely to the circumferential direction. This allows fine grinding between the balls and the riffles. The balls are lifted to a higher level by the elevations and/or the depressions and the balls are better agitated within the heap of balls effecting coarse grinding.

Growing community of inventors

Linz, Austria

Manfred Zoller