EP 0173271 B1 19881207 - ANNULAR GAP PEBBLE MILL
Title (en)
ANNULAR GAP PEBBLE MILL
Publication
Application
Priority
DE 3431636 A 19840829
Abstract (en)
[origin: ES8700577A1] The invention relates to an annular gap-type ball mill for continuously pulverizing in particular mineral hard materials comprising an upright grinding container closed by a cover, and housing a rotor whose cone-shaped outer surface limits with the cone-shaped inner surface of the grinding container a grinding gap communicating with a feed aperture and containing grinding pellets, the rotor having a top portion being adapted in its shape to the inner surface of the cover, and including within its range a discharge opening. The annular gap-type ball mill is characterized in that the top portion of the rotor is conical to limit with the cone-shaped cover an annular discharge gap whose lower end of maximum diameter ends in an annular chamber at the open upper end of the grinding gap. The grinding pellets are prevented from sinking down in the grinding gap 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.
IPC 1-7
IPC 8 full level
B02C 17/04 (2006.01); B02C 17/16 (2006.01); B02C 17/18 (2006.01)
CPC (source: EP KR US)
B02C 17/16 (2013.01 - KR); B02C 17/166 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LI LU NL SE
DOCDB simple family (publication)
DE 3431636 C1 19851017; AT E39066 T1 19881215; AU 4667885 A 19860410; AU 555884 B2 19861016; BR 8504117 A 19860422; CA 1244392 A 19881108; DD 236462 A5 19860611; DE 3566619 D1 19890112; EP 0173271 A2 19860305; EP 0173271 A3 19860820; EP 0173271 B1 19881207; ES 546469 A0 19861016; ES 8700577 A1 19861016; FI 74631 B 19871130; FI 74631 C 19880310; FI 853276 A0 19850827; FI 853276 L 19860301; IN 165878 B 19900203; JP H0152062 B2 19891107; JP S6168145 A 19860408; KR 860001614 A 19860320; KR 900000548 B1 19900131; US 4703896 A 19871103; US 4776522 A 19881011; ZA 856616 B 19860528
DOCDB simple family (application)
DE 3431636 A 19840829; AT 85110652 T 19850824; AU 4667885 A 19850827; BR 8504117 A 19850828; CA 489478 A 19850827; DD 28002085 A 19850827; DE 3566619 T 19850824; EP 85110652 A 19850824; ES 546469 A 19850828; FI 853276 A 19850827; IN 667MA1985 A 19850828; JP 19086985 A 19850828; KR 850006212 A 19850828; US 76611185 A 19850815; US 91254686 A 19860929; ZA 856616 A 19850829