Process of recovering platinum group metal

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

1992-04-09

1993-10-12

Brunsman, David

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Platinum group metal

502 22, C01G 5500, C22B 1100, C22B 910

Patent

active

052523055

ABSTRACT:
A process of recovering a platinum group metal from a waste catalyst comprising a first step which comprises heating and melting the catalyst impregnated with the 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 step which comprises supplying air or oxygen as an oxidant to the separated metal copper for 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 economical recovery of the platinum group metal from the waste catalyst in a short period of time with high recovery rate.

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