Improvements in refining

Details Improvements in refining Improvements in refining

C - Chemistry, Metallurgy

22

B

C22B 11/00 (2006.01) C22B 1/08 (2006.01) C22B 9/05 (2006.01) C22B 11/02 (2006.01) C22B 11/06 (2006.01)

Patent

CA 2314581

Precious metal-containing concentrates are subjected to high temperature chlorination using HCl gas, an optional reduction, an oxidation and finally a reduction, to remove most of the base metals especially the amphoteric elements.

Des concentrés contenant des métaux précieux sont assujettis à une chlorination à haute température en utilisant du gaz HCl, à une réduction optimale, à une oxydation et, enfin, à une réduction pour éliminer la plupart des métaux de base, surtout des éléments amphotériques.

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