EP 0267170 B1 19910130 - TREATMENT OF MIDDLINGS
Title (en)
TREATMENT OF MIDDLINGS
Publication
Application
Priority
SE 8604241 A 19861006
Abstract (en)
[origin: EP0267170A1] Regrinding of middlings in a mineral-product dressing process of the kind in which the middlings are reground in order to crush individual half-grains and release valuable mineral therefrom, is carried out in a mill using an agitated grinding medium. The middlings are reduced to a particle size which is smaller than k80 = 100 mu m. There are used grinding bodies having a mean size of from 2 to 6 mm.
IPC 1-7
IPC 8 full level
B02C 17/16 (2006.01); B02C 17/20 (2006.01); B03B 7/00 (2006.01); B03B 9/00 (2006.01); B03D 1/02 (2006.01); C22B 1/00 (2006.01)
CPC (source: EP)
B02C 17/16 (2013.01); B02C 17/20 (2013.01); B03B 9/00 (2013.01); B03D 1/02 (2013.01)
Designated contracting state (EPC)
AT DE ES FR GR IT SE
DOCDB simple family (publication)
EP 0267170 A1 19880511; EP 0267170 B1 19910130; AT E60527 T1 19910215; DE 3767832 D1 19910307; ES 2021395 B3 19911101; SE 8604241 D0 19861006
DOCDB simple family (application)
EP 87850297 A 19871002; AT 87850297 T 19871002; DE 3767832 T 19871002; ES 87850297 T 19871002; SE 8604241 A 19861006