重庆某低品位铝土矿化学脱硅产物溶出氧化铝试验研究  

Leaching of Al_2O_3 From Chemical Desilication Products of Low-grade Bauxite in Chongqing

作　　者：李博[1] 熊述清[1] 刘述平[1] 闫武[1] 徐凌飞[1] 

机构地区：[1]中国地质科学院矿产综合利用研究所,四川成都610021

出　　处：《湿法冶金》2013年第6期379-381,共3页Hydrometallurgy of China

基　　金：国土资源大调查基金资助项目(1212010661104)

摘　　要：研究了从重庆某低品位铝土矿化学脱硅产物中溶出氧化铝。正交试验结果表明:温度和时间是影响氧化铝溶出率的主要因素;最优溶出条件为溶出时间80min,溶出温度260℃,αk=1.45,碱质量浓度220g/L,石灰添加量6%。最优溶出条件下,氧化铝平均实际溶出率为85.70%,平均相对溶出率为98.71%。Leaching of A1203 from chemical desilication products of low-grade bauxite in Chongqing was studied. The orthogonal experimental results show that leaching temperature and time are the main influencing factors on leaching rate of AlzOs. The optimal leaching conditions are leaching temperature of 260 ℃ ,alkai concentration of 220 g/L,CaO dosage of 6% and leaching time of 80 rain. Under the optimum conditions, the average leaching rate of AlzO3 is 85. 70%, the average relative dissolution rate is 98.71%.

关 键 词：铝土矿 化学脱硅产物 氧化铝 溶出 

分 类 号：TF803.2[冶金工程—有色金属冶金]