硫酸浸出法提取铝土矿中氧化铝的研究  

Leaching Alumina from Bauxite by Sulfuric Acid

作　　者：牟文宁[1] 翟玉春[1] 吴艳[1] 石双志[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《矿产综合利用》2008年第3期18-20,共3页Multipurpose Utilization of Mineral Resources

摘　　要：对硫酸浸取铝土矿中氧化铝进行了研究,并考察了硫酸浓度、酸浸温度、酸浸时间、液固比、原料粒度对氧化铝浸出率的影响。结果表明,当硫酸浓度90%、温度220℃、时间1h、液固比5∶1、粒度小于141μm时,氧化铝的浸出率可达85%以上。In this paper,the leaching behaviour of alumina from bauxzite by sulfuric acid was described.The effects of sulfuric acid concentration,acid-leaching temperature,acid-leaching time,liquid to solid ratio and particle size of materials on leaching rate of alumina were investigated.The optimum conditions of the acid-leaching technology were established,that is,sulfuric acid concentration 90%,acid-leaching temperature 220℃,acid-leaching time 1h,liquid to solid ratio of 5∶1,particle size of materials is less than 141μm,leaching rate of alumina can reach more than 85%.

关 键 词：氧化铝 铝土矿 硫酸浸出 

分 类 号：TF803.21[冶金工程—有色金属冶金]