EP 0272485 A3 19890816 - METHOD AND INSTALLATION FOR THE TWO-STAGE CRUSHING OF BRITTLE MATERIAL
Title (en)
METHOD AND INSTALLATION FOR THE TWO-STAGE CRUSHING OF BRITTLE MATERIAL
Publication
Application
Priority
DE 3644342 A 19861223
Abstract (en)
[origin: US4783012A] A method and apparatus for the two-stage crushing of brittle material comprising a roll mill and a second mill downstream thereof, the output of the second mill being delivered to a sifter. The quantity of grit obtained in the sifting operation is divided between the roll mill and the second mill in such a way that the sum of the quantity of fresh material and the quantity of grit delivered to the roll mill remains constant.
IPC 1-7
IPC 8 full level
B02C 4/02 (2006.01); B02C 23/10 (2006.01); B02C 25/00 (2006.01)
CPC (source: EP KR US)
B02C 4/42 (2013.01 - KR); B02C 25/00 (2013.01 - EP US)
Citation (search report)
- DE 3520069 A1 19861204 - KRUPP POLYSIUS AG [DE]
- DE 3407535 A1 19850905 - KLOECKNER HUMBOLDT DEUTZ AG [DE]
- EP 0084383 B1 19860618
Designated contracting state (EPC)
BE DE ES FR GB IT
DOCDB simple family (publication)
EP 0272485 A2 19880629; EP 0272485 A3 19890816; EP 0272485 B1 19920930; BR 8707013 A 19880809; CA 1284975 C 19910618; DE 3644342 A1 19880707; DE 3782016 D1 19921105; ES 2035020 T3 19930416; IN 172197 B 19930501; JP S63166443 A 19880709; KR 880007129 A 19880826; KR 950007584 B1 19950712; US 4783012 A 19881108
DOCDB simple family (application)
EP 87117376 A 19871125; BR 8707013 A 19871223; CA 553270 A 19871201; DE 3644342 A 19861223; DE 3782016 T 19871125; ES 87117376 T 19871125; IN 1030DE1987 A 19871201; JP 31726587 A 19871215; KR 870014779 A 19871223; US 13098987 A 19871210