EP 0274187 A3 19900117 - IMPROVEMENTS IN OR RELATING TO THE FLUIDISED-BED ROASTING OF SULPHIDE MINERALS
Title (en)
IMPROVEMENTS IN OR RELATING TO THE FLUIDISED-BED ROASTING OF SULPHIDE MINERALS
Publication
Application
Priority
AU 968886 A 19861224
Abstract (en)
[origin: EP0274187A2] A process for improving the fluidising properties of material in the bed of a fluidised-bed roaster, said material including particles in fine, intermediate, and coarse size ranges, is characterised by increasing the proportion of material of intermediate size range therein. The advantages that can be gained by increasing the proportion of material in the intermediate particle size range include better gas and solid contacting, and an improvement in the ability of the bed to carry a greater proportion of coarse lumps as well as rejecting the fine sticky particles.
IPC 1-7
IPC 8 full level
C22B 1/10 (2006.01)
CPC (source: EP KR)
Citation (search report)
- [X] US 4626279 A 19861202 - BJOERNBERG ARNE [SE], et al
- [X] US 3955960 A 19760511 - GORLING KARL GORAN
- [X] US 2893839 A 19590707 - FRANZ SCHYTIL
- [A] US 2313019 A 19430302 - JULIUS LOHSE
- [A] BE 545578 A
- [A] US 4231791 A 19801104 - CHARLES JAMES A
- [A] US 3854931 A 19741217 - GORLING K, et al
- [A] US 2855288 A 19581007 - CYR HOWARD M, et al
- [A] US 2855287 A 19581007 - CYR HOWARD M
- [AD] GB 809765 A 19590304 - NEW JERSEY ZINC CO
Designated contracting state (EPC)
BE DE FR IT NL
DOCDB simple family (publication)
EP 0274187 A2 19880713; EP 0274187 A3 19900117; ES 2008399 A6 19890716; KR 880007774 A 19880829; KR 930005070 B1 19930615; NO 875386 D0 19871222; NO 875386 L 19880627
DOCDB simple family (application)
EP 87309351 A 19871022; ES 8703693 A 19871223; KR 870014888 A 19871224; NO 875386 A 19871222