首页 | 本学科首页   官方微博 | 高级检索  
     


Preparation of pure SbCl3 from lead anode slime bearing high antimony and low silver
Authors:CAO Hua-zhen  CHEN Jin-zhong  YUAN Hai-jun  ZHENG Guo-qu
Affiliation:[1]College of Chemical Engineering and Materials, Zhejiang University of Technology, Hangzhou 310014, China; [2]Department of Science and Technology, Guangxi China Tin Group Co., Ltd., Liuzhou 545006, China
Abstract:A novel treatment process of lead anode slime bearing high antimony and low silver was developed by a potential-controlled chloridization leaching and continuous distillation. The experimental results show a high Sb3+ concentration, 489.2 g/L, in the leaching solution for two-stage countercurrent leaching process, and the leaching rates of Sb, Cu, Bi more than 99% when the potential is controlled at 450 mV. When the leaching solution is distillated and concentrated at 120 °C, almost all the silicon compound is evaporated into the concentration distillate and exists as amorphous hydrated silica. By the continuous distillation, high pure SbCl3 could be prepared, and AsCl3 is enriched in the distillate while metals Bi, Cu are enriched in the continuous distillation residue. As a result, the recovery rate of Sb is more than 95%.
Keywords:lead anode slime  potential-controlled chloridization leaching  continuous distillation  antimony trichloride
本文献已被 CNKI 维普 万方数据 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号