热分解法综合利用明矾石工艺研究  

A Process of Utilizing Alumstone Comprehensively by Thermal Decomposition

作　　者：韩效钊[1] 徐超[1] 张兴法[1] 王雄[1] 许民才[1] 

机构地区：[1]合肥工业大学化工学院,安徽合肥230009

出　　处：《矿冶工程》2002年第1期72-75,共4页Mining and Metallurgical Engineering

基　　金：安徽省自然科学基金资助项目 (95-化 - 0 9)

摘　　要：提出了热分解法综合利用明矾石新工艺 :采用高温快速脱水、分解处理明矾石矿 ,既提高了明矾石的分解率 ,又保证了氧化铝的活性 ;采用“酸熔法”分离铝硅 ,既保证了氧化铝浸出率 ,又有效地解决了设备的腐蚀问题。实验结果表明 ,明矾石矿在 90 0℃下 ,焙烧 2 0min后 ,再经湿法加工 ,氧化钾和氧化铝的浸出率均能达到 95A new technology of utilizing alumstone comprehensively by thermal decomposition has been developed. Processing of alumstone by dehydration and decomposition at high temperature can not only improve the decomposition rate of alumstone, but guarantee the activity of aluminum oxide; Segregating aluminum from silicon by acid fusion can ensure the extraction rate of aluminum oxide, and settle the problem of equipment corrosion effectively as well. The result shows that alumstone was roasted at 900 ℃ for 20 minutes, then through wet processing, and the extraction rates of potassium oxide and aluminum oxide were both reach 95% above.

关 键 词：酸熔 硫酸钾 硫酸铝 热分解法 综合利用 明矾石 

分 类 号：TF821[冶金工程—有色金属冶金] X758[环境科学与工程—环境工程]