分金渣中银的提取及氯化银制备  

Silver Extraction and Silver Chloride Preparation from Gold Separating Residue

作　　者：汪秋雨 何强[1] 王日[1] 胡意文[1] 孙敬韬[1] 吕喜聪 黄绍勇[1] WANG Qiu-yu HE Qiang WANG Ri HU Yi-wen SUN Jing-tao LU Xi-cong HUANG Shao-yong(Jiangxi Copper Corporation, Nanehang 330096, Chin)

机构地区：[1]江西铜业集团公司,南昌330096

出　　处：《有色金属（冶炼部分）》2016年第11期35-38,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：江西省博士后科研择优资助项目(2015KY015)

摘　　要：提出一种从分金渣中提取银及制备氯化银的工艺。在下述最佳工艺条件下:亚硫酸钠浓度220g/L、pH=8.0、反应温度40℃、反应时间60min、液固比L/S=10,银浸出率达到98.3%;含银浸出液加硫酸控制pH为4.0制备出纯度为99.9%的氯化银,银直收率达到98.2%。Process of silver extraction and silver chloride preparation from gold proposed. Leaching rate of silver is 98.3% under the optimum conditions incl sodium sulfite of 220 g/L, pH value of 8.0, temperature of 40℃, leaching time of Silver chloride with purity of 99.9 % and silver recovery of 98.2 % is prepared from controlling pH value at 4. 0 by adding sulfuric acid. separating residue was uding concentration of 60 min, and L/S=10. leaching solution when

关 键 词：分金渣 亚硫酸钠 氯化银 浸出 

分 类 号：TF832[冶金工程—有色金属冶金]