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1. 发明申请

WO2010076030A1 RECOVERY OF COBALT AND PGM METALS FROM COBALT ALLOYS CONTAINING PRECIOUS METALS BY SELECTIVE DISSOLUTION 审中-公开
标题翻译：通过选择性溶解从含有重金属的钴合金中回收钴和PGM金属
公开(公告)号：WO2010076030A1
公开(公告)日：2010-07-08
申请号：PCT/EP2009/009328
申请日：2009-12-30
申请人： UMICORE , OOSTERHOF, Harald , VLEUGELS, Eddy
发明人： OOSTERHOF, Harald , VLEUGELS, Eddy
IPC分类号： C22B23/00 , C22B11/00 , C22B7/00 , C22B3/08 , C22B3/46 , C22B15/00
CPC分类号： C22B11/046 , C22B3/08 , C22B3/46 , C22B7/007 , C22B11/048 , C22B15/0089 , C22B23/026 , C22B23/0461 , Y02P10/214 , Y02P10/22 , Y02P10/224 , Y02P10/234 , Y02P10/236
摘要： This disclosure concerns a process for the recovery of PGM from the cobalt-based, PGM-bearing alloys that are typically obtained after smelting spent GTL catalysts. The process comprises the steps of: - powdering the alloy to a mean particle size of less than 250 μm; - providing a mixed tank reactor equipped with means for feeding H 2 SO 4 and a CuSO 4 solution; - leaching in a mixed tank reactor the powdered alloy in a first acidic aqueous solution comprising H 2 SO 4 and CuSO 4 , thereby obtaining a CoSO 4 solution and a PGM-bearing metallic Cu residue; - isolating the PGM-bearing metallic Cu residue from the first CoSO 4 solution, by solid/liquid separation; - leaching in a mixed tank reactor the PGM-bearing metallic Cu residue in a second acidic aqueous solution comprising H 2 SO 4 and an oxidizing agent, thereby obtaining a CuSO 4 solution and a PGM concentrate; - isolating the PGM concentrate from the CuSO 4 solution, by solid/liquid separation; - returning the CuSO 4 solution to the step of leaching the powdered alloy. The main advantage of this process is that no H 2 is formed at any time, thus considerably enhancing the safety of the process compared to the classical acidic lixiviation of metallic compounds.
摘要翻译：本公开涉及从通常在熔化废GTL催化剂之后获得的基于钴的含PGM的合金中回收PGM的方法。该方法包括以下步骤： - 将合金粉碎至平均粒度小于250μm; - 提供配备有用于供给H 2 SO 4和CuSO 4溶液的装置的混合罐式反应器; - 在混合罐式反应器中将粉末状合金浸入包含H 2 SO 4和CuSO 4的第一种酸性水溶液中，从而得到CoSO 4溶液和含PGM的金属Cu残余物; 通过固/液分离从第一种CoSO4溶液中分离含PGM的金属Cu残留物; - 在混合罐式反应器中将含有PGM的金属Cu残留物在包含H 2 SO 4和氧化剂的第二种酸性水溶液中浸出，从而得到CuSO 4溶液和PGM浓缩物; - 通过固/液分离从PGSO 4溶液中分离PGM浓缩物; - 将CuSO 4溶液返回到浸出粉末状合金的步骤。该方法的主要优点是在任何时候都不形成H2，因此与经典的金属化合物的酸性浸出相比，显着提高了工艺的安全性。

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