Dead roast-oxide flash reduction process for copper...

Details Dead roast-oxide flash reduction process for copper... Dead roast-oxide flash reduction process for copper...

C - Chemistry, Metallurgy

22

B

53/277

C22B 15/00 (2006.01)

Patent

CA 1202184

- 13 - ABSTRACT OF THE DISCLOSURE The present invention contemplates providing a finely divided copper calcine and thereafter subjecting the calcine to reduction flash smelting. Indeed, significant processing advantages are achieved by dead roasting a finely divided copper concentrate, especially in a fluid bed reduction zone, and thereafter subjecting the resulting calcine to reduction flash smelting. Gases from the dead roaster and the flash smelter are combined for SO2 recovery in an acid plant.

420061

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