EP 0011559 B1 19841219 - PROCESS AND APPARATUS FOR WET ATTRITION
Title (en)
PROCESS AND APPARATUS FOR WET ATTRITION
Publication
Application
Priority
FR 7832217 A 19781115
Abstract (en)
[origin: CA1151624A] This invention provides a process and apparatus for the wet attrition of ore. The process comprises grinding the ore to a pulp having a particle size distribution such that about 80 % by weight of the particles have a diameter of from about 30 to about 0.4 mm ; and agitating the pulp in a slightly turbulent medium. The apparatus comprises a vat having top and bottom covers with central openings and a gutter disposed along the exterior circumference of the top of the vat ; a cylindrical shaft extending through the opening in the top cover ; and a pair of impellers mounted at a distance apart on the shaft, the blades of the impellers being so arranged that the pulp is pumped towards the space defined between the two impellers.
IPC 1-7
IPC 8 full level
B01F 7/18 (2006.01); B02C 17/00 (2006.01); B02C 17/16 (2006.01); B03B 7/00 (2006.01); C22B 1/00 (2006.01)
CPC (source: EP US)
B01F 27/90 (2022.01 - EP US); B03B 7/00 (2013.01 - EP US); C22B 1/00 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE FR GB IT LU NL SE
DOCDB simple family (publication)
EP 0011559 A1 19800528; EP 0011559 B1 19841219; AT E10861 T1 19850115; AU 5280179 A 19800522; AU 537854 B2 19840719; BR 7907421 A 19800708; CA 1151624 A 19830809; DE 2967335 D1 19850131; FR 2441425 A1 19800613; GR 74068 B 19840606; JP H0160297 B2 19891221; JP S55124553 A 19800925; MA 18639 A1 19800701; OA 06385 A 19810731; PT 70454 A 19791201; US 4434942 A 19840306; YU 278279 A 19830228
DOCDB simple family (application)
EP 79400847 A 19791112; AT 79400847 T 19791112; AU 5280179 A 19791114; BR 7907421 A 19791114; CA 339835 A 19791114; DE 2967335 T 19791112; FR 7832217 A 19781115; GR 790160485 A 19791112; JP 14759679 A 19791114; MA 18840 A 19791112; OA 56947 A 19791115; PT 7045479 A 19791114; US 33375181 A 19811223; YU 278279 A 19791113