铂钯铑分离提纯过程及铑的分布规律  

Distribution Pattern of Rhodium in the Separation and Purification Process of Platinum,Palladium and Rhodium

作　　者：肖力 孙峙[2] XIAO Li;SUN Zhi(GEM Inc,Shenzhen 518101,Guangdong,China;Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]格林美股份有限公司,广东深圳518101 [2]中国科学院过程工程研究所,北京100190

出　　处：《有色金属（冶炼部分）》2024年第8期86-93,共8页Nonferrous Metals（Extractive Metallurgy)

基　　金：中国博士后科学基金资助项目(2019M663111)。

摘　　要：以溶液中铂、钯、铑的短流程与高效分离为目标,系统研究了贵液中铂、钯、铑的分离提纯及铑的分散规律,探索了通过NH4Cl沉铂—氧化沉钯—DETA沉铑流程对贵液中的铂、钯、铑进行分离提纯。分离铂、钯后液中的铑仅占全部铑的20%左右,铑在铂、钯精炼提纯工序分别分散了14.59%、65.33%。对于钯、铑混合物沉淀采用DETA沉淀法优先分离铑的策略,一次沉淀直收率达77.25%,极大简化了铑的分离流程。Aiming to achieve a short and efficient separation of platinum,palladium and rhodium in solution,the separation and purification of platinum,palladium and rhodium in precious liquids,as well as the dispersion law of rhodium,were systematically studied.The separation and purification of platinum,palladium and rhodium in precious liquids was explored through the process of platinum precipitation with NH 4 Cl,palladium oxidation precipitation,and rhodium precipitation with DETA.After the separation of platinum,palladium and rhodium,only about 20% of the total rhodium was present in the liquid compared to the initial precious liquids.Rhodium was dispersed by 14.59% and 65.33% in the platinum and palladium refining purification processes,respectively.The strategy of using DETA precipitation method to preferentially separate rhodium from the precipitation of palladium rhodium mixtures was adopted,achieving a direct precipitation yield of 77.25%.This strategy greatly simplified the rhodium separation process.

关 键 词：铂 钯 铑 分离提纯 DETA沉铑 

分 类 号：TF83[冶金工程—有色金属冶金]