失效双氧水催化剂中钯的浸出-沉淀富集效率研究  

Study on the leaching-precipitation enrichment efficiency of palladium in spent hydrogen peroxide catalyst

作　　者：童伟锋[1] 赵家春[1] 吴晓峰[1] 吴跃东[1] 王亚雄[1] TONG Wei-feng;ZHAO Jia-chun;WU Xiao-feng;WU Yue-dong;WANG Ya-xiong(Kunming Institute of Precious Metals,State Key Laboratory of Advanced Technologies for Comprehensive Utilization of Platinum Metals,Sino-platinum Metals Co.Ltd.,Kunming 650106,China)

机构地区：[1]昆明贵金属研究所,贵研铂业股份有限公司稀贵金属综合利用新技术国家重点试验室,昆明650106

出　　处：《贵金属》2022年第S01期84-88,共5页Precious Metals

基　　金：云南省重大科技专项(202002AB080001,2018ZE001)。

摘　　要：研究了从失效双氧水催化剂中富集钯的工艺,采用“焙烧浸出-硫化沉钯”的工艺实现了钯的高效富集。重点考察在浸出中硫酸浓度、浸出温度、浸出时间、盐酸浓度、NaClO_(3)用量对富集倍数的影响。研究了富集钯的最佳工艺条件,结果表明,钯平均富集12.09倍,钯的平均回收率为99.55%。The process to enrich palladium from the spent hydrogen peroxide catalysts were studied.The process of"roasting-leaching and palladium sulfide precipitation"is used to achieve high-efficiency enrichment of palladium,focusing on the dosage influence caused by sulfuric acid concentration,leaching temperature,leaching time,hydrochloric acid concentration,and NaClO_(3)during leaching.The optimal process conditions for the enrichment of palladium were obtained.The results showed that the average enrichment ratio of palladium was 12.09,and the recovery rate of palladium was 99.55%.

关 键 词：失效催化剂 钯 氯化浸出 硫化沉淀 富集倍数 

分 类 号：TF83[冶金工程—有色金属冶金]