高硫铝土矿溶出过程中脱硫研究  

Research of desulfurization in the course of disposing of high grade bauxite containing sulfur

作　　者：兰军[1] 吴贤熙[1] 解元承[1] 马黎[1] 刘彬彬[1] 

机构地区：[1]贵州大学化学工程学院,贵州贵阳550003

出　　处：《应用化工》2008年第8期886-889,908,共5页Applied Chemical Industry

基　　金：贵州科学技术基金;黔科合J字[2005]2097号

摘　　要：研究了高硫型高品位铝土矿溶出过程的脱硫效果,考察了石灰添加量、溶出温度、苛性碱浓度和溶出时间对铝土矿中脱硫效果的影响。结果表明,在溶出高硫铝土矿时,脱硫效果最佳条件是:石灰添加量10%,温度245℃,脱硫时间70 min,碱液浓度240 g/L。此时,硫的溶出率仅为31.3%,同时又能保证氧化铝溶出率不低于81%。The paper studies mainly the effect of desulfurization in the course of disposing of high grade bauxite containing sulfur. Some factors are studied such as calcium oxide, leaching-temperature, alkaliconcentration, leaching-time. It＇s optimum conditions are that calcium oxide is 10%, leaching-temperature is 245℃,leaching-time is 70 min, and alkali-consistency is 240 g/L. In the optimum condition, the proportion of desulfurization reaches 31.3% ,and the yield of Al2O3 reaches at least 81%.

关 键 词：高硫型高品位铝土矿 脱硫 石灰 

分 类 号：TF821[冶金工程—有色金属冶金]