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%.
作者
赵雨
王欢
贺小塘
吴喜龙
李勇
李子璇
廖微
雷霆
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)
出处
《贵金属》
CAS
CSCD
北大核心
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)
关键词
有色金属冶金
钯
废催化剂
加压
碱溶
氧化铝
回收
nonferrous metallurgy
palladium
spent catalyst
high pressure
alkali solution
aluminum oxide
recovery