报废汽车催化剂中铑的提取与富集  

Extraction and Enrichment of Rhodium from Spent Automotive Catalysts

作　　者：陈帅[1] 程垚[1] 张建涛[1] 沈少波[1] 

机构地区：[1]北京科技大学冶金与生态工程学院,稀贵金属绿色回收与提取北京市重点实验室,北京100083

出　　处：《有色金属（冶炼部分）》2014年第4期42-44,57,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学面上基金资助项目(50874011);北京科技大学本科生科技创新项目(13180163)

摘　　要：研究了预处理对酸性氯酸盐水氯化法提取报废汽车催化剂中铑的影响,并研究了氯化提取液中铑的锌粉置换工艺条件。结果表明,在下述最佳预处理条件下,可以使铑的提取率由55.9%增加到82.7%:氧气预处理温度300℃、氧气流速200mL/min、时间3h;氢气预处理温度300℃、氢气流速200mL/min、时间3h。优化后的锌粉置换条件为:锌粉用量20g/L、反应时间40min,在此条件下铑的置换率为85.6%。The effects of pretreatment on rhodium extraction from spent automotive catalyst with acidic sodium chlorate solution were investigated. Rhodium was replaced from chlorination solution by zinc powder and the optimum parameters were obtained. The results show that rhodium extraction is improved from 55.9% to 82.7% under the following optimum pretreatment conditions including oxygen pretreatment at 300 ℃ for 3 hours with oxygen flow rate of 200 mL/min and hydrogen pretreatment at 300 ℃ for 3 hours with hydrogen flow rate of 200 mL/min. Rhodium replacement rate is 85.6% under the optimum conditions including dosage of zinc powder of 20 g/L and reaction time of 40 min.

关 键 词：废汽车催化剂 铑 预处理 水氯化法 锌粉置换 

分 类 号：TF837[冶金工程—有色金属冶金]