赤泥中镓铝在常压酸法浸出过程中的行为  

Acid Leaching Behavior of Ga and Al in Red Mud at Atmospheric Pressure

作　　者：路坊海 李安静[3] 王家伟[3] 赵平源[3] 肖唐付[2] 谭德灿 袁艺[1] 

机构地区：[1]贵州理工学院材料与冶金工程学院,贵阳550003 [2]中国科学院地球化学研究所环境地球化学国家重点实验室,贵阳550081 [3]贵州大学材料与冶金学院,贵阳550025

出　　处：《有色金属（冶炼部分）》2016年第12期27-31,共5页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金资助项目(51664010);贵州省科学技术基金项目(黔科合J字[2014]2083号;黔科合LH字[2016]7095号);贵州理工学院高层次人才项目(XJGC20130903)

摘　　要：采用盐酸为浸取剂,研究了常压下赤泥中镓和铝的浸出行为,考察盐酸添加量、温度、时间及液固比对镓、铝浸出行为的影响。结果表明,在盐酸添加系数1.2、浸出温度55℃、浸出时间4h、液固比8(mL/g)的条件下,镓浸出率高达94.77%,铝浸出率88.44%,浸出液含Ga2O33.68mg/L、Al2O322.73g/L。在该试验条件下,镓与铝的浸出效率成明显的正相关性。Leaching behavior of Ga and Al in red mud was studied at atmospheric pressure with hydrochloric acid as leachant. The effects of dosage of hydrochloric acid, temperature, time, and L/S on leaching behavior of Ga and Al were investigated. The results show that leaching rates of Ga and Al are 94.77% and 88.44% respectively, with concentrations of Ga2O3 and Al2O3 of 3.68 mg/L and 22.73 g/L in lixivium, respectively, under the conditions including acid addition coefficient of 1.2, leaching temperature of 55℃, leaching time of 4h, and L/S=8. Leaching efficiencies of Ga and Al are in positive correlation under the test conditions.

关 键 词：赤泥 酸浸 镓 铝 

分 类 号：TF821[冶金工程—有色金属冶金]