文献类型：期刊文献

中文题名：亚硫酸铵还原焙烧软锰矿提取锰试验研究

英文题名：Extraction of Manganese from Manganese Dioxide Ores by(NH_(4))_(2)SO_(3) Reduction Roasting

作者：黎应芬 胡林 王润玺 王志琦

第一作者：黎应芬

机构：[1]贵州理工学院材料与能源工程学院,贵州贵阳550003

第一机构：贵州理工学院材料与能源工程学院

年份：2024

卷号：43

期号：4

起止页码：391-394

中文期刊名：湿法冶金

外文期刊名：Hydrometallurgy of China

收录：;北大核心:【北大核心2023】；

基金：贵州省教育厅高校科技创新团队(黔教技[2023]078号)。

语种：中文

中文关键词：软锰矿;亚硫酸铵;焙烧;还原;浸出;提取;锰;铁

外文关键词：pyrolusite;ammonium sulfite;roasting;reduction;leaching;extraction;manganese;iron

摘要：研究了以亚硫酸铵为还原剂,通过高温焙烧直接把软锰矿中的二氧化锰还原成硫酸锰,从而实现软锰矿的高效提取,考察了亚硫酸铵与软锰矿质量比、焙烧温度及时间、浸出温度及时间等对锰提取率的影响,确定了最佳工艺条件。结果表明:最优条件为亚硫酸铵与软锰矿质量比0.75∶1,焙烧温度500℃,焙烧时间1.5h,浸出温度25℃,浸出时间30min;在该条件下,锰浸出率约为93%,铁浸出率约9.5%。锰提取效果较好。
Manganese dioxide in pyrolusite was directly reduced to manganese sulfate by high-temperature roasting with ammonium sulfite as reducing agent,so as to achieve efficient extraction of pyrolusite.The effects of mass ratio of ammonium sulfite to pyrolusite,roasting temperature and time,leaching temperature and time on the extraction rate of manganese were investigated,and the optimum process conditions were determined.The results show that the optimal conditions are the mass ratio of ammonium sulfite to pyrolusite of 0.75∶1,roasting temperature of 500℃,roasting time of 1.5 h,leaching temperature of 25℃,leaching time of 30 min.Under the conditions,the leaching rate of manganese and iron is about 93% and about 9.5%,respectively.The extraction effect of manganese is good.