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›› 2007, Vol. 7 ›› Issue (2): 317-321.

• 过程与工艺 • 上一篇    下一篇

微波焙烧对一水硬铝石矿浸出性能的影响

王一雍,张廷安,陈霞,鲍丽   

  1. 东北大学材料与冶金学院
  • 出版日期:2007-04-20 发布日期:2007-04-20

Effects of Microwave Roasting on Leaching Behavior of Diaspore Ore

WABG Yi-yong,ZHANG Ting-an,CHEN Xia,BAO Li   

  1. School of Materials and Metallurgy, Northeastern University
  • Online:2007-04-20 Published:2007-04-20

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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.

关键词: 微波焙烧, 一水硬铝石矿, 微波辐射, 浸出性能

Abstract: 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 min. 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.

Key words: microwave roasting, diaspore, microwave irradiation, leaching efficiency