B - Operations – Transporting – 02 – C
Patent
B - Operations, Transporting
02
C
241/92
B02C 17/16 (2006.01)
Patent
CA 1244392
ABSTRACT Annular Gap-Type Ball Mill The invention relates to an annular gap-type ball mill (1) for continuously pulverizing in particular mineral hard materials comprising an upright grinding container (12) closed by a cover (15), and housing a rotor (13) whose cone- shaped outer surface limits with the cone-shaped inner surface of the grinding container (12) a grinding gap (20) communicating with a feed aperture (21) and containing grinding pellets (21), the rotor (13) having a top portion (14) being adapted in its shape to the inner surface of the cover (15), and including within its range a discharge opening (31). The annular gap-type ball mill is characterized in that the top portion (14) of the rotor is conical to limit with the cone-shaped cover (15) an annular discharge gap (23) whose lower end of maximum diameter ends in an annular chamber (24) at the open upper end of the grinding gap (20).The grinding pellets are prevented from sinking down in the grinding gap (20) of which 100% are utilized for the grinding operation so that the residence time required for the pulverization of the mineral hard materials is reduced.
489478
Fabian Peter
Hoffmann Karl-Heinz
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Reimbold & Strick G.m.b.h. & Co.
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