发明名称 |
PROCESS OF RECOVERING PLATINUM GROUP METAL |
摘要 |
<p>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 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 process 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 economic recovering of the platinum group metal from the waste catalyst in a short period of time with high recovery rate.</p> |
申请公布号 |
EP0512959(A3) |
申请公布日期 |
1993.05.12 |
申请号 |
EP19920830169 |
申请日期 |
1992.04.06 |
申请人 |
TANAKA KIKINZOKU KOGYO K.K.;DOWA MINING CO., LTD.;KOSAKA SMELTING & REFINING CO.,LTD |
发明人 |
EZAWA, NOBUYASU;INOUE, HIROSHI;TAKADA, SHOEI;MASUDA, HITOSHI |
分类号 |
B01J38/00;C01G55/00;C22B11/00;C22B11/02;(IPC1-7):C22B11/02 |
主分类号 |
B01J38/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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