摘要
采用碱性焙烧—浸出工艺处理高砷高锡阳极泥,考察了碱料比、焙烧温度、焙烧时间、液固比、浸出温度及浸出时间等对金属浸出率的影响。结果表明,优化条件为:碱料比0.9、焙烧温度600℃、焙烧时间2h、液固比3(mL/g)、浸出温度80℃、浸出时间2h。在此条件下,碱性焙烧—浸出工艺能实现砷锡高效分离,砷的回收率高达95.2%,浸出渣含砷<0.5%,其它有价金属有效富集以便后续回收。
High As and Sn bearing anode slime were treated by alkaline roasting and leaching.The effects of mass ratio of soda to anode slime,roasting temperature,roasting time,L/S,leaching temperature,and leaching time on leaching efficiency of metals were investigated.The results show that leaching rate of As is 95.2%and As content in leaching slag is 0.5% below under the optimum conditions including mass ratio of soda to anode slime of 0.9,roasting temperature of 600 ℃,roasting time of 2 h,L/S=3 mL/g,leaching temperature of 80℃,and leaching time of 2 h.Other valuable metals in anode slime are relatively enriched for further recycling.
作者
王晓阳
王文祥
方红生
莫越坚
WANG Xiao-yang;WANG Wen-xiang;FANG Hong-sheng;MO Yue-jian(Department of Environmental Engineering, Guangdong Polytechnic of Environmental Protection Engineering, Foshan 528216, Guangdong, China;Guangdong Engineering andTechnology Research Center of Solid Waste Resource Recovery and Heavy Metal Pollution Control, Foshan 528216, Guangdong, China)
出处
《有色金属（冶炼部分）》
CAS
北大核心
2018年第6期9-12,60,共5页
Nonferrous Metals（Extractive Metallurgy)
基金
2015年省级财政技术研究与开发补助费用项目(粤财工[2015]639号)
2017广东普通高校创新团队项目(2017GKCXTD004)
关键词
高砷高锡阳极泥
碱性焙烧
砷锡分离
有价金属
high As and Sn bearing anode slime
alkaline roasting
separation of As and Sn
valuable metals
