硫化氢还原焙烧氧化锰矿工艺  

Process for Reduction Roasting of Manganese Oxide Ore with Hydrogen Sulfide

作　　者：李依珊 王帅[1,2] 张超 田新 钟宏[1,2] LI Yi-shan;WANG Shuai;ZHANG Chao;TIAN Xin;ZHONG Hong(School of Chemistry and Chemical Engineering,Central South University,Changsha 410083,Hunan,China;Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources,Changsha 410083,Hunan,China;Guizhou Wuling Manganese Industry Co Ltd,Songtao 554115,Guizhou,China;Chongqing Wuling Manganese Industry Co Ltd,Xiushan 409912,Chongqing,China)

机构地区：[1]中南大学化学化工学院,湖南长沙410083 [2]锰资源高效清洁利用湖南省重点实验室,湖南长沙410083 [3]贵州武陵锰业有限公司,贵州松桃554115 [4]重庆武陵锰业有限公司,重庆秀山409912

出　　处：《矿冶工程》2020年第6期75-78,共4页Mining and Metallurgical Engineering

基　　金：国家科技支撑计划课题(2015BAB17B01);湖南省科技计划项目(2016TP1007)。

摘　　要：以硫化氢为还原剂,对氧化锰矿进行还原焙烧,研究了还原焙烧温度、还原焙烧时间、氧化锰矿粒度和硫化氢浓度对锰浸出率的影响。结果表明,最佳还原焙烧条件为:焙烧温度500℃、焙烧时间75 min、氧化锰矿粒度0.150~0.250 mm、硫化氢浓度5%,此时锰浸出率达到99.06%。该工艺可为工业副产品硫化氢高附加值利用提供理论和技术指导。With hydrogen sulfide as the reducing agent, a process of reduction roasting was adopted for processing manganese oxide ore, and the effects of temperature and time of reduction roasting process, grain size of manganese oxide ore, as well as the concentration of hydrogen sulfide on the Mn leaching rate were investigated. The results show that under the following optimal reduction roasting conditions, including a roasting process at 500 ℃ for 75 min, the manganese oxide ore in the grain size of 0.150~0.250 mm and the hydrogen sulfide at the concentration of 5%, the Mn leaching rate can reach 99.06%. This process can provide a theoretical and technical guidance for the high-value-added utilization of industrial by-product with hydrogen sulfide.

关 键 词：硫化氢 氧化锰矿 还原焙烧 锰 高附加值利用 

分 类 号：TF111[冶金工程—冶金物理化学]