低浓度失效含铑均相催化剂回收铑的工艺研究  

Study on the Process of Recovering Rhodium from Spent Homogeneous Catalyst Containing Low Concentration Rhodium

作　　者：张金池 姜东 解雪 刘贵清 张帆 ZHANG Jinchi;JIANG Dong;XIE Xue;LIU Guiqing;ZHANG Fan(Jiangsu BGRIMM Metal Recycling Science&Technology Co.,Ltd.,Xuzhou 221121,China)

机构地区：[1]江苏北矿金属循环利用科技有限公司,江苏徐州221121

出　　处：《中国资源综合利用》2022年第11期24-27,31,共5页China Resources Comprehensive Utilization

摘　　要：本研究以乙酸酐生产中使用的失效铑催化剂作为试验原料,采用氧化络合-硫化沉淀工艺高效富集和回收高价值金属铑。研究表明,在氧化络合沉淀试验的最佳工艺中,H_(2)O_(2)用量为40 mL,HCOOH+C_(2)H_(2)O_(4)用量为40 mL,反应温度为70 ℃,络合沉淀时间为120 min,最佳条件下铑回收率达到94.88%;络合沉淀后液硫化沉淀富集铑试验的优化参数中,溶液初始pH为1,反应温度为70 ℃,Na_(2)S用量为10 g,反应时间为150 min,优化条件下铑沉淀率达到70.55%。经过两步工艺处理,铑的综合回收率高达96.39%。In this study,the spent rhodium catalyst used in acetic anhydride production is used as the test material,and the oxidation complexation-sulfurization precipitation process is used to efficiently enrich and recover high value rhodium metal.The research shows that in the optimal process of oxidation complexation precipitation test,the amount of H_(2)O_(2) is 40 mL,the amount of HCOOH+C_(2)H_(2)O_(4) is 40 mL,the reaction temperature is 70℃.,the complexation precipitation time is 120 min,under the optimal conditions,the rhodium recovery rate reaches 94.88%;in the optimization parameters of rhodium enrichment test by sulfide precipitation of complexed precipitation solution,the initial pH of the solution is 1,the reaction temperature is 70℃,the amount of Na_(2)S is 10 g,and the reaction time is 150 min,under the optimization conditions,the rhodium precipitation rate reaches 70.55%.After two steps of processing,the comprehensive recovery rate of rhodium is 96.39%.

关 键 词：铑 均相催化剂 氧化 络合 沉淀 

分 类 号：TF837[冶金工程—有色金属冶金]