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含银废液中银的回收和利用 预览

Silver recovery and utilization from silver waste liquor
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摘要 实验探究了高温石墨还原法、甲醛还原法和锌粉置换法回收银的效果,并对不同的实验方法进行了分析,高温石墨还原法、甲醛还原法和锌粉置换法回收银的回收率分别为99.3%,98.7%和90.5%。高温石墨还原法具有银的回收率较高,反应时间短,实验安全性高,无有害气体产生等特点,值得采用。同时,还对用回收银制备高锰酸银的工艺进行了探讨,并取得了满意的结果。 The effects of silver recovery by high temperature graphite reduction, formaldehyde reduction and zinc powder replacement were investigated. Different experimental methods were analyzed. The recovery rates of silver by high temperature graphite reduction, formaldehyde reduction and zinc powder replacement were 99.3%, 98.7% and 90.5%, respectively. Graphite reduction at high temperature has the advantages of high recovery rate of silver, short reaction time, high experimental safety,no harmful gases and other characteristics. It is worth adopting. At the same time, the preparation process of silver permanganate was discussed and satisfactory results were obtained.
作者 许亚兰 宁梦洁 陶鹏程 王梦巧 杨明 XU Ya-lan;NING Meng-jie;TAO Peng-cheng;WANG Meng-qiao;YANG Ming(School of Chemical and Environmental Engineering,Wuhan Polytechnic University,Wuhan 430023 China)
出处 《武汉轻工大学学报》 2019年第2期91-93,108共4页 Journal of Wuhan Polytechnic University
基金 湖北省教育厅科技计划项目(D20171703).
关键词 回收 废液 高锰酸银 silver recovery waste liquor silver permanganate
作者简介 许亚兰(1996-),女,硕士研究生,E-mail: 1821879969@qq.com;通信作者:杨明(1963-),男,博士,教授,E-mail: ymnju@163.com.
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