摘要
依据锰矿的赋存形态,采用还原焙烧-酸浸法处理高硅复杂氧化锰矿,考察了焙烧温度、焙烧时间、煤与矿质量比、浸出温度、浸出时间、初始硫酸浓度、液固比等因素对锰浸出率的影响.结果表明,在焙烧温度880℃、焙烧时间1.5 h、煤与矿质量比18%、浸出温度 55℃、浸出时间 2h、初始硫酸浓度 1.80 mol/L、液固比 5mL/g条件下,锰浸出率达 95.83%.
Abstract
According to the existence of manganese,an experiment was carried out by adopting a processing technique consisting of reduction roasting and acid leaching to treat high-silicon manganese oxide ore.The effects of roasting temperature,roasting time,mass ratio of coal to ore,leaching temperature and time,initial sulfuric acid concentration,and liquid-solid ratio on the manganese leaching rate were all investigated.The results show that the leaching rate of manganese can reach 95.83%under the conditions including roasting temperature of 880℃,roasting time of 1.5 h,a mass ratio of 18%for coal to ore,leaching temperature of 55℃,leaching time of 2 h,initial sulfuric acid concentration of 1.80 mol/L,as well as liquid-solid ratio of 5 mL/g.
基金项目
湖南省自然科学基金(2020JJ4507)
湖南省自然科学基金(2020JJ5456)
矿物清洁生产与绿色功能材料开发湖南省重点实验室开放基金(KWC202001)
NETL
NSTL
万方数据