大型机械搅拌式浮选机槽内固体悬浮的研究  

RESEARCH OF SOLIDS SUSPENSION IN LARGE-SCALE MECHANICAL FLOTATION CELL

作　　者：沈政昌[1] 卢世杰[1] 陈东[1] 董干国[1] 

机构地区：[1]北京矿冶研究总院,北京100044

出　　处：《有色金属（选矿部分）》2009年第4期37-40,共4页Nonferrous Metals（Mineral Processing Section）

基　　金：国家"十一五"科技支撑计划重点项目(2006BAB11B08)

摘　　要：固体悬浮是浮选技术中比较重要的部分,研究重点是如何以最小的能耗获得所需的悬浮效果。大颗粒达到完全离底悬浮状态所需的最低搅拌速度称为临界转速。本文在临界转速条件下进行了固体悬浮试验,从试验数据可以看出,当大颗粒达到完全离底悬浮状态时,槽内各个层面浓度分布、粒级分布及金属量分布非常均匀,说明浮选机的叶轮转速、直径及槽体结构的设计合理,JJF-200大型机械搅拌式浮选机达到了工业应用的要求。Solid suspension is important in the design and operation of mechanical flotation cell, the research of solid suspension is gain effective suspension by spend less energy. The speed which all solids in the cell are off-bottom suspension is called critical impeller speed, N. The experiment of solid suspension is done at the critical impeller speed, the experiment results are perfect and irs mean the design of impeller structure, diameter and cell structure are reasonable, JJF-200 large size mechanical flotation cell satisfy the requirements of industry application.

关 键 词：浮选机 固体悬浮 临界转速 浓度分布 粒级分布 粒度 

分 类 号：TD456.2[矿业工程—矿山机电]