硼酸铝制备熔块中硫酸钾浸溶动力学  

Study on Dissolution Kinetic of Potassium Sulfate from Melting Salt Block of Aluminum Borate

作　　者：高世扬[1] 白延峰[1] 夏树屏[1] 李青凤[1] 

机构地区：[1]中国科学院青海盐湖研究所,西安710043

出　　处：《盐湖研究》1998年第2期37-43,共7页Journal of Salt Lake Research

摘　　要：用明矾与硼酸和硫酸钾在1150℃下合成硼酸铝（9Al2O3·2B2O3）晶体，得到圆柱型绕结块。对于在水中，不同搅拌速率（100—800r／min）、温度（20—80℃）和酸度（盐酸0．1—2．0mol／L，硫酸0．1—1．0mol／L）时熔块中硫酸钾的浸溶动力学进行了研究，用Stumm和Avrami方程计算，给出了动力学方程及活化能。At 1150℃ the aluminum borate crystal was synthesized by the raw materials of alum and boric acid in the melting potassium sulfate,and a cylindrical melting block was obtained. The dissolution experments for the K2SO4 in the block such as washer,different concentration of HCl (0.1-2mol/L) and H2SO4 (0.1-1.0mol/L) and temperature (20℃-80℃),stirring rate (100-800r/min) has been studied respectively. The kinetics equation of infiltration in water and in acid,and the activation engergy have been calcuted according to Stumm equation and Avrami equation.

关 键 词：硼酸铝 硫酸钾 浸溶动力学 熔块 制备工艺 

分 类 号：TQ263.2[化学工程—有机化工] TQ263.1