EP 0304414 A3 19900131 - GRINDING METHOD FOR A BALL DRUM MILL, BALL DRUM MILL AND MILL LINING
Title (en)
GRINDING METHOD FOR A BALL DRUM MILL, BALL DRUM MILL AND MILL LINING
Publication
Application
Priority
AT 208487 A 19870820
Abstract (en)
[origin: EP0304414A2] The invention relates to a grinding method for ball drum mills and a ball drum mill. It is provided according to the invention that in order to improve the drawing in of material and the friction behaviour in the longitudinal direction of the drum successive balls are subjected, in addition to their rolling movement occurring counter to the direction of rotation of the drum, to a reciprocal relative movement running essentially radial to the drum axis in that the balls are raised or lowered in the radial direction and returned again into their initial position. For this purpose, grooves (2) with a depth which changes along the circumference of the drum are provided in the mill linings (1).
IPC 1-7
IPC 8 full level
B02C 17/22 (2006.01)
CPC (source: EP)
B02C 17/22 (2013.01)
Citation (search report)
- EP 0164328 A1 19851211 - VOEST ALPINE AG [AT]
- DE 1161110 B 19640109 - KLOECKNER WERKE AG
- BE 736421 A 19691231
- AT 283092 B 19700727 - BOEHLER & CO AG GEB
Designated contracting state (EPC)
BE CH DE FR IT LI
DOCDB simple family (publication)
EP 0304414 A2 19890222; EP 0304414 A3 19900131; AT 393234 B 19910910; AT A208487 A 19900715
DOCDB simple family (application)
EP 88890208 A 19880812; AT 208487 A 19870820