微波焙烧对一水硬铝石矿浸出性能的影响  

Effects of Microwave Roasting on Leaching Behavior of Diaspore Ore

作　　者：王一雍[1] 张延安[1] 陈霞[1] 鲍丽[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《过程工程学报》2007年第2期317-321,共5页The Chinese Journal of Process Engineering

基　　金：国家自然科学基金(编号:50174018);辽宁省重点学科带头人计划基金(编号:辽教办20011712406)

摘　　要：研究了微波焙烧对一水硬铝石矿浸出性能的影响．考察了微波辐射温度、微波辐射时间对矿物浸出性能的影响,在此基础上,对微波焙烧预处理的机理作了进一步的探讨．结果表明,微波焙烧能够显著提高氧化铝的浸出率,降低浸出液的分子比．微波焙烧在微波辐射温度为535℃、辐射时间为5 min时达到了最佳的效果．微波辐射温度过高会造成矿物烧结,影响浸出效果．延长微波辐射时间对浸出效果影响不大．The effects of microwave roasting pretreatment on leaching behavior of diaspore ore were investigated. The influences of microwave irradiation temperature and microwave irradiation time were studied. The mechanism of microwave roasting pretreatment was also studied. The results show that microwave roasting pretreatment can greatly improve the leaching efficiency of Al2O3, and decrease the mole fraction of digestion liquor. The optimal microwave roasting conditions are that the microwave irradiation temperature is 535℃, and the microwave irradiation time 5 rain. The high microwave irradiation temperature can result in ore sintering, influencing the leaching effect. Prolonging microwave irradiation time has no obvious influence on leaching behavior.

关 键 词：微波焙烧 一水硬铝石矿 微波辐射 浸出性能 

分 类 号：TF803.21[冶金工程—有色金属冶金]