报废银钨触头回收银和钨的工艺研究  

Recycling Process of Silver and Tungsten from Waste Ag-W Alloy Contact

作　　者：王琪[1] 娄德大[1,2] 徐元萍[1,2] 周全法[1] 

机构地区：[1]江苏技术师范学院,江苏常州213001 [2]江苏工业学院,江苏常州213164

出　　处：《稀有金属材料与工程》2011年第10期1817-1821,共5页Rare Metal Materials and Engineering

基　　金：国家科技支撑计划项目(2008BAC46B04);江苏省高校科研成果产业化推进项目(JH09-16);江苏技术师范学院基础及应用基础研究基金项目(KYY08018)

摘　　要：银钨合金触点是重要的电接触材料,报废银钨触点中银钨的分离和资源化问题引起了越来越多的重视。以报废银钨触头为原料,提出了"一次分银-焙烧-二次分银"的回收工艺,考察了银钨分离的工艺条件,通过实践验证了其可靠性,银、钨的回收率达到99%以上。回收得到的银和钨可分别深加工成粒度为0.3～0.6μm的超细银粉和纯净的WO3产品。Ag-W alloy contact is one kind of important electrical contact materials,and the separation and recycling of sliver and tungsten from waste Ag-W alloy contact has attracted more and more attention for the resource value and secondary pollution during the recycling process.A novel process about the separation and recycling of sliver and tungsten from waste Ag-W alloy contact has been proposed,which includes 4 steps of first leaching silver,roasting,secondary leaching silver and ammonia leaching.The result shows that the recovery rate of Ag and W is higher than 99%,and 0.3-0.6 μm superfine silver powders and pure WO3 powders can be obtained during the recycling process.

关 键 词：银钨触头 银钨分离 超细银粉 三氧化钨 

分 类 号：TF832[冶金工程—有色金属冶金] TF841.1