Base metals recovery by adsorption of cyano complexes on...

Details Base metals recovery by adsorption of cyano complexes on... Base metals recovery by adsorption of cyano complexes on...

C - Chemistry, Metallurgy

22

B

C22B 3/24 (2006.01) C22B 3/02 (2006.01) C22B 3/04 (2006.01) C22B 11/08 (2006.01) C22B 15/00 (2006.01)

Patent

CA 2096249

2096249 9208812 PCTABS00013 A recovery method for base metal values (e.g. copper) from ore slurry or aqueous solution, comprising forming a solution of a metal complex (e.g. cyano-copper) having an affinity for adsorption sites on activated carbon, adsorbing the metal complex onto activated carbon, and stripping the adsorbed metal complex by forming a reaction product with said metal complex, the reaction product having no affinity for adsorption sites on activated carbon. A method for recovering base metals and noble metals separately from an ore containing both is also disclosed. The method is carried out in an apparatus comprising a leaching stage (17) and an adsorption stage (221) which may be combined, and an elution column (11). The method and apparatus also provide a mechanism for recovery of activated carbon and cyanide.

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