明矾制备氧化铝和硫酸钾的试验研究  

Experimental Research on Roasting-Water Leaching-Crystallization Process to Produce Alumina and Potassium Sulfate from Alum

作　　者：王瑞永 

机构地区：[1]紫金矿业低品位难处理黄金资源综合利用国家重点实验室,福建上杭364200

出　　处：《矿产保护与利用》2012年第5期30-33,共4页Conservation and Utilization of Mineral Resources

基　　金：福建省杰出青年基金项目(编号:2011J0103)

摘　　要：以明矾为原料,采用焙烧—浸出—结晶的工艺路线制备氧化铝和硫酸钾,研究了明矾焙烧过程温度、时间及明矾焙砂浸出温度、时间、液固比等因素对氧化铝产品质量及回收率的影响。优化工艺条件下试验结果表明,氧化铝和硫酸钾的回收率均在90%以上,得到的α-氧化铝、硫酸钾化学成分分别符合GB/T 24487-2009(AO-3)、GB 20406-2006的要求。In this paper, using alum as raw materials, zation process were carried out to produce alumina and and the roasting - water leaching - crystalli- potassium sulfate. The factors impact on the quality and recoveries of alumina were studied, such as the roasting temperature and time, leaching temperature, time and liquid solid ratio of alum calcine, etc. In the optimum conditions, the experiment results showed that recoveries of alumina and potassium sulfate were more than 90%, and the chemical composition of α - alumina and potassium sulfate prepared in laboratory respectively conform the GB/T 24487 - 2009（ AO - 3 ）

关 键 词：明矾 制备 氧化铝 硫酸钾 焙烧 浸出 

分 类 号：TF803.22[冶金工程—有色金属冶金] TQ443.6[化学工程—化学肥料工业]