黄铁矿-微生物体系还原浸出低品位氧化锰矿工艺过程研究  

Reductive Leaching Process of Low-grade Manganese Oxide Ore by Pyrite-Microorganism System

作　　者：张旭 冯雅丽[2] 张小伟 ZHANG Xu;FENG Ya-li;ZHANG Xiao-wei(School of Gemology and Materials Technology,Hebei GEO University,Shijiazhuang 050031,Hebei,China;School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]河北地质大学宝石与材料工艺学院,河北石家庄050031 [2]北京科技大学土木与资源工程学院,北京100083

出　　处：《矿冶工程》2018年第5期100-102,106,共4页Mining and Metallurgical Engineering

基　　金：中国大洋矿产资源研究开发计划(DY125-25-T-08);中央高校基础研究基金(FRT-TP-09-002B);河北地质大学校内项目(BQ2017019)

摘　　要：利用黄铁矿和微生物组合浸出低品位氧化锰矿,研究了pH值、矿浆浓度和接菌浓度对低品位氧化锰矿中锰元素浸出的影响。结果表明,在pH=1.6、矿浆浓度15%和接菌浓度20%的条件下,锰浸出率达到92.3%。嗜酸氧化亚铁硫杆菌与溶液中的Fe^(3+)能够促进黄铁矿发生氧化还原反应,进而强化氧化锰矿中锰元素的浸出。Test on leaching of low-grade manganese oxide ore by using a combination of pyrite and microbe was conducted and effects of pH value, slurry concentration and microbial inoculation concentration in the system on the leaching process of manganese from low-grade manganese oxide ore were investigated. Results showed that, the manganese leaching rate reached 92.3% after the leaching process with pH = 1.6, slurry concentration at 15% and inoculation concentration at 20%. It is found that aeidithiobaeillus ferrooxidans and Fe3＋ in the solution can promote the oxidation-reduction reaction of pyrite, which then can improve the leaching effect of manganese from manganese oxide ore.

关 键 词：氧化锰矿 黄铁矿 微生物浸出 氧化还原反应 锰 

分 类 号：TF18[冶金工程—冶金物理化学]