摘要
研究了用硫酸从火法处理电镀污泥所得富含锌铅锡烟尘中浸出锌并富集铅、锡,考察了硫酸质量浓度、温度、浸出时间、液固体积质量比对锌浸出率的影响。结果表明:采用两段逆流酸浸工艺,在液固体积质量比3/1、温度80℃、浸出时间1h、一段浸出硫酸质量浓度30g/L、二段浸出硫酸质量浓度110g/L条件下,锌浸出率达96.44%,渣中锌质量分数降至0.91%,渣中铅、锡分别富集至20.13%和36.86%。通过锌的浸出及铅锡富集,实现了有价金属综合回收。
Leaching of zinc and concentrating of lead and tin from zinc-lead-tin flue dust from electroplating sludge using sulfuric acid was investigated.The effects of sulphuric acid concentration,temperature,reaction time,liquid-to-solid ratio on leaching of zinc were examined.The results show that by two-stage adverse current leaching,under the optimal conditions of liquid-to-solid ratio of 3/1,leaching temperature of 80℃,leaching time of 1 h,initial sulphuric acid concentration of first stage 30 g/L and second stage 110 g/L,the zinc leaching rate is 96.44%.In the leaching slag,the zinc content is reduced to 0.91%,and the lead and tin are enriched to 20.13%and 36.86%,respectively.The comprehensive recovery of valuable metals realizes by leaching of zinc and enriching of lead and tin.
作者
邹维
刘俊场
付维琴
牟兴兵
谢天鉴
翟忠标
ZOU Wei;LIU Junchang;FU Weiqin;MOU Xingbing;XIE Tianjian;ZHAI Zhongbiao(Kunming Metallurgy Research Institute,Kunming 650503,China;State Key Laboratory of Pressure Hydrometallurgical Technology of Associated Nonferrous Metal Resources,Kunming 650503,China;Yunnan Key Laboratory for New Technology of Beneficiation and Metallurgy,Kunming 650503,China)
出处
《湿法冶金》
CAS
北大核心
2020年第1期18-22,共5页
Hydrometallurgy of China
基金
云南省科技人才和平台计划项目(2019HB081)
关键词
锌铅锡烟尘
锌
铅
锡
硫酸
浸出
富集
zinc-lead-tin flue dust
zinc
lead
tin
sulphuric acid
leaching
enrichment
作者简介
第一作者简介:邹维(1989—),男,硕士,工程师,主要研究方向为湿法冶金及二次资源综合利用。E-mail:zouwei.net@163.com。
