重晶石熟料水浸过程热力学及动力学分析  

Thermodynamics and Dynamics Analysis about Water Leaching Process of Barite chamotte

作　　者：张煜[1,2] 聂登攀[2,3] 王艳书[1] 陈琨[1] 廖裕辉 Zhang Yu;Nie Dengpan;Wang Yanshu;Chen Kun;Liao Yuhui(School of Chemistry and Chemical Engineering.Guizhou University, Guiyang,Guizhou 550025;College of Resource and Environmental Engineering,Guizhou University,Guiyang, Guizhou 550025;Guizhou Institute of Metallurgical and Chemcial Industry,Guiyang ,Guizhou 550002)

机构地区：[1]贵州大学化学与化工学院,贵州贵阳550025 [2]贵州大学资源与环境工程学院,贵州贵阳550025 [3]贵州省冶金化工研究所,贵州贵阳550002

出　　处：《非金属矿》2017年第3期50-53,共4页Non-Metallic Mines

摘　　要：重晶石熟料水浸工艺是重晶石碳热还原法制备钡盐产品的关键环节,对重晶石熟料水浸过程热力学及动力学进行了研究。结果表明,重晶石熟料水浸过程主要有硫化钡的水解反应,二氧化碳与氢氧化钡生成碳酸钡的反应;该水浸反应属于液-固相非催化反应,符合缩芯模型,表观活化能Ea为39629.57J/mol,指前因子K0为4840.0484/min。Water leaching process of barite chamotte is a key in the preparation of barium salt.In this paper,study on the thermodynamics and dynamics analysis about water leach-ing process of barite chamotte was carry on.The results show that,the hydrolysis of bar-iumsulfide is easily proceed.Carbon dioxide and barium hydroxide is liable to the format-ion of barium carbonate.And the water leaching process of barite chamotte is a liquid-solid noncatalytic reactiondescribed by shrinking core model.Kineticparameters have been calcula-ted respectivelyfrom experimental data:apparent activation energy(Ea=39629.57J/mol)and pre-exponential factor(K0=4840.0484/min)of the reactions.

关 键 词：重晶石熟料 水浸 热力学 动力学 

分 类 号：TQ132.35[化学工程—无机化工]