铝酸钠溶液离子膜电解分解率的影响因素  

Influence Factors on Sodium Aluminate Solution Precipitation by Ion Membrane Electrolysis

作　　者：李元高[1] 陶涛[1,2] 王松森[1] 陈启元[1] 

机构地区：[1]中南大学化学化工学院,长沙410083 [2]宁夏大学天然气转化自治区重点实验室,银川750021

出　　处：《有色金属》2008年第3期70-73,共4页Nonferrous Metals

基　　金：国家重大基础研究发展规划项目(2005CB623702)

摘　　要：在铝酸钠溶液离子膜电解/种分的过程中,考察主要因素对其分解率的影响。结果表明,时间、温度、αK、溶液浓度、搅拌速度、晶种系数、电解次数、硅量指数对分解率都有一定的影响。随时间延长分解率提高,低αK、中等浓度的分解率较高,添加晶种有利于氢氧化铝的析出,搅拌速度适宜即可,电解次数增加,分解率升高,硅量指数越高,分解率和产品质量越高。In the electrolysis and decomposition process of sodium aluminate solution with ion membrane, some key influence factors on precipitation are investigated. The results show that time, temperature, αK, solution concentration, stir speed, coefficient of seed crystal, electrolytic times and silica index can all influence the precipitation rate. The precipitation rate is increased with the extension of time and increase of the electrolytic times. The precipitation rate is much higher in low αK and middling concentration situation, and the addition of seed crystal is favor to precipitation of Al（OH）3 product, stir speed should be adequate. Both the precipitation rate and product quality are improved with the increase of silica index.

关 键 词：冶金技术 铝酸钠溶液 离子膜 电解 分解 

分 类 号：TF821[冶金工程—有色金属冶金] TF803.22