紫金山选铜尾矿综合利用明矾石工艺研究  

Study on the Process of Utilizing Alunite Comprehensively in the Tailings of Zijinshan Copper Ore Flotation

作　　者：沈青峰[1] 衷水平[1] 王瑞永[1] 

机构地区：[1]紫金矿业集团股份有限公司,福建上杭364200

出　　处：《矿产保护与利用》2011年第5期88-91,共4页Conservation and Utilization of Mineral Resources

基　　金：国家重点基础研究发展计划(973)资助项目(编号:2010CB735501)

摘　　要：以紫金山选铜尾矿浮选的明矾石精矿为原料,研究了酸浸法提取明矾石中K、Al元素以及明矾深加工生产硫酸钾和氧化铝的工艺条件。试验结果表明,明矾石精矿在600℃下焙烧2.5 h,其脱水率接近100%;酸浸温度90℃、液固比为6、硫酸用量为理论值的1.4倍时,精矿中K、Al的浸出率分别达到95.85%、90.61%;结晶明矾经过900℃焙烧和三次洗涤后,氧化铝的纯度可以达到96.90%。In this paper,the alunite concentration which floated from the tailings of Zijinshan copper ore was used as raw material.The processes of extraction of K and Al elements by acid leaching and alums deep-processing were studied.The results showed that when alunite concentration was roasted at 600 ℃ for 2.5h,the dehydration rate approximated to 100%.When acid leaching temperature was 90 ℃,liquid-solid ratio was 6,and the dosage of sulfuric acid was 1.4 times more than theoretical value,the leaching rate of K and Al were 95.85% and 90.61% respectively.When the alums crystal was roasted at 900 ℃ and washed three times,the content of aluminum oxide reached 96.90%.

关 键 词：明矾石精矿 酸浸法 焙烧 浸出率 选铜尾矿 

分 类 号：TD971.2[矿业工程—选矿] X751[环境科学与工程—环境工程]