基于还原焙烧-酸浸法的电解锰阳极泥中锰铅分离研究  

Separation of Manganese and Lead from Electrolytic Manganese Anode Slime by Reduction Roasting and Acid Leaching Process

作　　者：龙腾发[1,2] 金尧 唐文丽 唐庚飞 朱志刚 周桓宇 陈春强 霍强[1,2] LONG Tengfa;JIN Yao;TANG Weni;TANG Gengfei;ZHU Zhigang;ZHOU Huanyu;CHEN Chunqiang;HUO Qiang(School of Environment and Resources,Guangxi Normal University,Guilin 541004,Guangxi,China;Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection(Guangxi Normal University),Ministry of Education,Guilin 541004,Guangxi,China;Jingxi Daxinan Manganese Industry Co Ltd,Jingxi 533803,Guangxi,China;Changsha Xiangren Manganese Industry Technology Co Ltd,Changsha 410006,Hunan,China)

机构地区：[1]广西师范大学环境与资源学院,广西桂林541004 [2]珍稀濒危动植物生态与环境保护省部共建重点实验室,广西桂林541004 [3]靖西市大西南锰业有限公司,广西靖西533803 [4]长沙湘仁锰业科技有限公司,湖南长沙410006

出　　处：《矿冶工程》2023年第6期128-132,138,共6页Mining and Metallurgical Engineering

基　　金：国家自然科学基金(51968007);广西重点研发计划(2023AB01019);桂林市科学研究与技术开发计划(20220124⁃3)。

摘　　要：采用硫磺还原焙烧-硫酸浸出处理电解锰阳极泥(EMAS),实现其中锰、铅分离。研究了焙烧过程中焙烧温度、硫磺与锰物质的量比、焙烧时间、EMAS粒径以及浸出过程中搅拌速度、浸出温度、浸出时间、固液比及硫酸浓度对锰、铅分离的影响。结果表明,焙烧优化条件为:焙烧温度550℃、硫磺与锰物质的量比1∶1、焙烧时间50 min、EMAS粒径-0.177 mm,酸浸优化条件为:搅拌转速350 r/min、浸出温度40℃、浸出时间20 min、固液比1∶20、硫酸浓度2.5 mol/L,此条件下阳极泥中锰浸出率达97.4%(滤液中锰离子浓度为38.84 g/L),浸出渣中Pb含量达45.26%,有效实现了锰与铅的分离。Electrolytic manganese anode slime(EMAS)was processed by adopting sulfur-based reduction roasting and sulfuric acid leaching to separate manganese and lead therein.The effects of roasting temperature,molar ratio of sulfur to manganese,roasting time,particle size of EMAS,stirring speed in leaching,leaching temperature,leaching time,solid-liquid ratio and sulfuric acid concentration on separation of manganese and lead were studied.The results show that with the optimized roasting conditions,including roasting temperature of 550℃,molar ratio of sulfur to manganese at 1∶1,roasting time of 50 min,EMAS at particle size of-0.177 mm,and optimized acid leaching conditions including stirring speed of 350 r/min,leaching temperature of 40℃,leaching time of 20 min,solid-liquid ratio at 1∶20,and sulfuric acid concentration of 2.5 mol/L,the leaching rate of manganese from EMAS can reach 97.4%,and the concentration of manganese ions in filtrate is 38.84 g/L,while the content of Pb in leaching residue is 45.26%.As a result,the effective separation between manganese and lead can be actualized.

关 键 词：电解锰阳极泥 硫磺 还原焙烧 硫酸酸浸 锰 铅 

分 类 号：X753[环境科学与工程—环境工程]