废Pd/Al2O3催化剂综合回收钯研究  

Review of Recovery of Palladium from the Spent Pd/Al2O3 Catalysts

作　　者：严海军 周玉娟 徐斌[2] 周华荣 李骞[2] 杨永斌[2] Haijun Yan;Zhou Yujuan;Xu Bin;Zhou Huarong;Li Qian;Yang Yongbin(Technology Development of Western Mining Group Co.,Ltd.,Xining,Qinghai,China;Central South University School of Minerals Pocessing and Bioengineering,Changsha,Hunan,China)

机构地区：[1]西部矿业集团科技发展有限公司,青海西宁810006 [2]中南大学资源加工与生物工程学院,湖南长沙410083

出　　处：《矿产综合利用》2020年第1期16-24,共9页Multipurpose Utilization of Mineral Resources

基　　金：青海省重大科技专项(2018-GX-A7);国家自然科学基金(51504293);湖南省自然科学基金(2018JJ4038)。

摘　　要：钯作为一种稀缺资源,其二次资源回收利用尤为重要。本文总结了从废Pd/Al2O3催化剂中回收钯的方法和技术,按回收流程,对预处理、粗提及富集三大部分进行了评述,详细介绍了粗提工艺。目前三大粗提工艺中,湿法工艺最为符合当今绿色环保发展理念。湿法工艺中以预处理+配位剂选择性浸出钯的工艺综合效果较佳,其中以湿法氯化法为代表,且已得到工业化应用。但湿法氯化法对于浸出液中钯的后续回收不具优势,且提钯之后的浸出液未得到综合利用。因此,进一步研究出能高效浸出钯、一步法回收浸出液中钯,兼具实现浸出液综合利用的方法是今后发展方向。As one of the rare resources,the second resource of Palladium recycling is particularly important.In this paper,the methods and techniques of palladium recovery from the spent Pd/Al2O3 catalysts are summarized.Three parts of pretreatment,crude mention and enrichment are reviewed according to the recycling process,especially the crude extraction process is introduced in detail.At present,hydrometallurgy is the one that fit the current green development most.The synthetic effect of selective extraction of palladium by pretreatment +coordination agent is the most promising one.However,the chlorination method of hydrometallurgy has no advantage for the subsequent recovery of palladium in the leachate,and the leachate after palladium extraction has not been used comprehensively.Therefore,further research on high efficiency leaching of palladium and one-step recovery of palladium in leached liquid is the future development direction.

关 键 词：废Pd/Al2O3催化剂 钯的回收 综述 

分 类 号：TD952[矿业工程—选矿]