Assaying and/or recovering precious metals

Details Assaying and/or recovering precious metals Assaying and/or recovering precious metals

C - Chemistry, Metallurgy

22

B

C22B 11/00 (2006.01) C22B 3/00 (2006.01) C22B 11/10 (2006.01)

Patent

CA 2344129

A method of assaying and/or recovering at least one precious metal from an ore, concentrate or slag containing metal oxide includes mixing crushed ore, concentrate or slag with aluminum and lime and heating the mixture to initiate an aluminothermic reaction at a temperature above its melting point to reduce the metal oxide and produce a metal alloy containing the metal and the precious metal and also produce a slag. The metal alloy containing the precious metal is then separated from the slag.

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