Process of recovering platinum group metal

Details Process of recovering platinum group metal Process of recovering platinum group metal

C - Chemistry, Metallurgy

22

B

C22B 11/00 (2006.01) C22B 11/02 (2006.01)

Patent

CA 2065601

Disclosed is a process of recovering a platinum group metal from a waste catalyst comprising a first process which comprises heating and melting the catalyst impregnated with tire platinum group metal, copper and/or the oxide of copper, a flux component and a reductant component to form a layer containing the metal copper into which the platinum group metal is absorbed and another layer of the oxide, and then separating the metal copper; and a second process which comprises supplying air or oxygen as an oxidant to the separated metal copper fur oxidizing under heating and melting to form a layer of partially oxidized metal copper and another layer of the metal copper containing the concentrated platinum group metal, and separating it. This process enables the economic recovering of the platinum group metal from the waste catalyst in a short period of time with high recovery rate.

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