期刊论文

中文

武汉轻工大学学报

2095-7386

2019

38

2

91-93+108

10.3969/j.issn.2095-7386.2019.02.018

湖北省教育厅科技计划项目(D20171703).

本校为第一机构

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 si...