硫酸浸出硼泥中镁离子过程研究  

Leaching process of magnesium ion from boron slurry by sulfuric acid

作　　者：高枫[1] 葛颖新[2] 刘涛[1] 李蕾[1] 

机构地区：[1]沈阳化工大学化学工程学院,辽宁沈阳110142 [2]沈阳产品质量监督检验院

出　　处：《无机盐工业》2012年第12期51-53,共3页Inorganic Chemicals Industry

摘　　要：对硫酸浸出硼泥中镁离子工艺过程进行了研究，考察了硼泥颗粒粒径、硫酸稀释比、酸浸温度对浸出镁离子的影响。结果表明，当硼泥颗粒粒径为62～77μm、硫酸稀释比为1：2、酸浸温度为60℃时，得到镁离子最高浸出率为64．61％。通过动力学分析得出，当硼泥颗粒粒径为62—77μm时，硫酸浸出硼泥中的镁由表面反应控制和固膜扩散控制共同作用，酸浸活化能为14kJ／mol。Leaching process of magnesium ion from boron slurry by sulfuric acid was studied.Influences of boron slurry particle size, dilution ratio of sulfuric acid, and acid leaching temperature on magnesium ion leaching effect were investigated. Results showed that the maximum magnesium ion leaching rate was about 64.61% when particle size of boron slurry was 62- 77 μm, dilution ratio of sulfuric acid was 1：2, and acid leaching temperature was 60 ℃.Leaching kinetics indicated that when the particle size of boron slurry was 62-77μm, the leaching of magnesium ion from boron slurry by sulfuric acid was under the joint action of surface reaction control and solid film diffusion control,and the acid leaching activation energy was determined to be 14 kJ/mol.

关 键 词：硼泥 动力学 硫酸浸出 镁 

分 类 号：TQ132.2[化学工程—无机化工]