膨润土酸溶解特性研究  

Characteristics of acid dissolution reaction on bentonite

作　　者：罗太安[1] 刘晓东[1] 辛育东[1] 陈泉水[1] 

机构地区：[1]东华理工学院材料科学与工程系,江西抚州344000

出　　处：《化工矿物与加工》2005年第9期4-6,共3页Industrial Minerals & Processing

基　　金：国防预研项目(项目号:41602301)。

摘　　要：本文进行了膨润土与硫酸的反应特性实验研究,考察了膨润土中Ca2+、Mg2+、K+、Na+、Al3+离子在不同条件下的溶出特征。结果表明:膨润土中不同位置的阳离子溶出特征不同,层间阳离子溶出属一般的物理交换变化,不涉及化学键的断裂,温度的变化对其溶出量无影响;结构中的阳离子的溶出实质是化学变化过程,受溶解反应活化能的控制,温度的升高有利于离子的溶出。The reaction characteristics of bentonite with sulphuric acid were studied. The dissolving properties of Ca^2＋, Mg^2＋, K^＋, Na^＋ ,Al^3＋ in bentonite was studied in different conditions. The results showed that the dis.solving properties of cations presented in different position in bentonite were different. The dissolution of cations in the interlayer was controlled by surface absorption, while the dissolution of cations within the structure was controlled by exchange reaction under acidic condition.

关 键 词：膨润土 硫酸 阳离子 溶出量 

分 类 号：TD985[矿业工程—选矿]