加压碱溶法从氧化铝基废催化剂中回收钯  

Recovery of Palladium from the Alumina-Based Waste Catalysts by Pressurized Alkali Dissolution Method

作　　者：赵雨 王欢 贺小塘 吴喜龙 李勇 李子璇 廖微[2] 雷霆[3] ZHAO Yu;WANG Huan;HE Xiaotang;WU Xilong;LI Yong;LI Zixuan;LIAO Wei;LEI Ting(Sino-Platinum Metals Resources (Yimen) Co. Ltd., Kunming 651100, China;Kunming Institute of Precious Metals, Kunming 650106, China;Kunming Metallurgy College, Kunming 650033, China)

机构地区：[1]贵研资源(易门)有限公司,昆明651100 [2]昆明贵金属研究所,昆明650106 [3]昆明冶金高等专科学校,昆明650033

出　　处：《贵金属》2016年第3期37-41,共5页Precious Metals

基　　金：云南省省院省校科技合作项目(2013IB020)

摘　　要：研究了加压碱溶载体法从氧化铝基含钯废催化剂中回收钯的工艺。在高压釜中,反应温度200℃,压力12 kg/cm2,时间6 h,氧化铝载体的溶解效率大于95%;选择甲酸钠作为抑制剂,可将钯在溶液中的浓度降低至0.0005 g/L以下;富集物经溶解-精炼得到纯度大于99.98%的海绵钯,钯直收率为99.02%。The process of recovering palladium from the alumina-based waste catalysts by pressurized alkali dissolution method was studied. At the reaction temperature of 200℃, pressure of 12 kg/cm2, and the reaction time of 6 h in the autoclave, the dissolution efficiency of alumina carrier is more than 95%.With sodium formate as inhibitor, the concentration of palladium in solution can be reduced to less than 0.0005 g/L. By dissolving-refining the purity of sponge palladium could be reached to over 99.98%, and the direct recovery of palladium was 99.02%.

关 键 词：有色金属冶金 钯 废催化剂 加压 碱溶 氧化铝 回收 

分 类 号：TF836[冶金工程—有色金属冶金] TF114