射流浮选柱气泡发生器及其充气性能的研究  

Research on Bubble Cenerator of Jet Flotation Column and Its Aerating Performance

作　　者：徐志强[1] 皇甫京华[1] 曾鸣[1] 刘炯天[2] 张荣曾[1] 

机构地区：[1]中国矿业大学化学与环境工程学院,北京100083 [2]中国矿业大学化工学院,江苏徐州221008

出　　处：《中国矿业大学学报》2003年第6期615-619,共5页Journal of China University of Mining & Technology

基　　金：国家"九五"洁净煤攻关项目(95-215-01-04-03)

摘　　要：根据射流泵原理设计了一种浮选柱气泡发生器,并对其充气性能进行了试验,研究了气泡发生器结果参数、流体压力、负压与柱内含气率的关系;探讨了浮选过程中浮选药剂浓度、矿浆浓度变化对含气率的影响.结果表明:气泡发生器的射流面积比对含气率有较大影响,最佳面积比为6～10;含气率随压力增高而增加,压力升到一定程度后,含气率趋于平稳;当气泡发生器吸气室负压达到一定数值后,含气率也将趋于饱和;随起泡剂用量加大,含气率呈上升趋势;随矿浆浓度的增加,含气率则呈下降趋势.研究结果为射流浮选柱气泡发生器的设计和结构优化提供了依据.A bubble generator for flotation column was designed according to the principle of jet pump and its aerating performance has been experimented in the paper. The relationship among the structure parameter of bubble generator, the fluid pressure, suction pressure and air voids were researched. The influence of flotation reagent and pulp concentration on air voids was discussed. The result shows that the bubble generator jetting area ratio has an important influence on air voids with the best ratio being 6-10. The air voids increase with the fluid pressure and it will become stable when the fluid pressure is up to a certain value; And the air voids will reach saturation while the suction pressure is up to a constant, it also increases with the increase of frother but increases with the increase of pulp concentration . These provide a criterion for jet bubble generator design and structure optimization.

关 键 词：射流浮选柱 气泡发生器 充气性能 浮选药剂 结构设计 

分 类 号：TD456[矿业工程—矿山机电]