泡沫层厚度对低品位铝土矿柱式分选影响的半工业试验研究  

Semi-Industry Experiments on the Foam Layer Thickness in the Separation of Low-grade Bauxite with Flotation Column

作　　者：周游[1,2] 周长春[1,2] 张宁宁[1,2] 刘小凯[1,2] 王松涛[1,2] 

机构地区：[1]中国矿业大学化工学院,江苏徐州221116 [2]国家煤加工与洁净化工程技术研究中心,江苏徐州221116

出　　处：《有色金属（选矿部分）》2015年第2期64-67,共4页Nonferrous Metals（Mineral Processing Section）

基　　金：国家自然科学基金项目(51174205);中央高校基本科研业务费专项(2011QNB09);教育部新世纪优秀人才支持计划资助项目(NCET-R-0962)

摘　　要：针对影响低品位铝土矿柱式分选的重要因素—泡沫层厚度,利用旋流—静态微泡浮选柱开展了半工业试验研究,探究了在"快速浮选—一次粗选—一次精选"工艺下粗选浮选柱和精选浮选柱中泡沫层厚度对浮选效果的影响。研究发现,泡沫层厚度对精选段的影响明显高于对粗选段的影响;粗选最佳泡沫层厚度为45 cm,精选最佳泡沫层厚度为50 cm,且在该泡沫层厚度下获得了A/S为6.36、回收率为77.95%的合格精矿。The research focuses on the foam layer thickness,an important factor in the separation of low-grade bauxite,basing on the pilot tests with cyclone-static micro bubble flotation column. The research adopt the process＂Instant flotation,single-stage roughing and single-stage concentrating＂,which concentrates on studying the foam layer thickness＇ s influence on roughing and concentrating. The results show that the foam layer thickness＇ s has a more significant effect on the results in the roughing than concentrating. After couples of the optimal experiments of foam layer thickness,good floating results were obtained with A/S of6.36 and recovery of 77.95%.

关 键 词：泡沫层厚度 低品位铝土矿 旋流—静态微泡浮选柱 柱式分选 

分 类 号：TD952[矿业工程—选矿]