旋流浮选器在铝土矿反浮选中的应用  

Application of air-sparged hydrocyclone in reverse flotation of bauxite

作　　者：孙伟[1] 耿志强[1] 易峦[1] 高志勇[1] 刘建东[1] 

机构地区：[1]中南大学资源加工与生物工程学院,长沙410083

出　　处：《中国有色金属学报》2010年第3期557-564,共8页The Chinese Journal of Nonferrous Metals

基　　金：国家高技术研究发展计划资助项目(2007AA06Z129);研究生学位论文创新资助项目(2009SSXT237)

摘　　要：为了解决铝土矿反浮选中微细粒浮选的难题,设计出一种旋流浮选器,利用流体动力学理论,通过模拟计算,建立旋流浮选器中铝土矿的分离粒度模型,推导出旋流浮选器应用于铝土矿反浮选的理论依据。对河南某铝土矿进行旋流浮选器浮选实验研究。结果表明:通过优化调整旋流浮选器的条件参数,不预先脱泥直接进行铝土矿反浮选,最终获得满足拜耳法对铝土矿生产要求的一水硬铝石精矿,精矿中平均A/S为8.38,回收率为85.16%。In order to resolve the problem of fine particle flotation in the reverse flotation of bauxite,a new type of air-sparged hydrocyclone was designed,through accurate analog computation based on hydrodynamics theory.The theoretical foundation was deducted for the application of air-sparged hydrocyclone in the bauxite reverse flotation.The flotation tests of air-sparged hydrocyclone aiming at a bauxite from Henan province were studied.The results show that a diaspore concentrate directly used in the Bayer-mineral processing method can be obtained by optimizing the parameters of the hydrocyclone without pre-desliming.The average A/S of the concentrate is 8.38 with a recovery rate of 85.16%.

关 键 词：铝土矿 反浮选 旋流浮选器 分离粒度 

分 类 号：TD92[矿业工程—选矿]