喷射浮选机充气混合性能研究  

Experimental Study on Gas Holdup and Mixing Performance of Jet Flotation Machine

作　　者：孙凤杰[1] 陶秀祥[1,2] 

机构地区：[1]中国矿业大学化工学院,江苏徐州221116 [2]煤炭加工与高效洁净利用教育部重点实验室,江苏徐州221116

出　　处：《煤炭技术》2017年第12期260-263,共4页Coal Technology

基　　金：国家自然科学基金(51574235)

摘　　要：利用体积法和电导示踪法对通气和喷射吸气2种情况下喷射浮选机充气性能与混合特性进行了实验研究。结果表明:当气液比在0.05~0.4 m^3/min(G)/m^3(L)范围内时,浮选机气含率均随表观气速增大而呈线性增加,随循环液速的增加而增加,且吸气时的平均气含率较通气时高约2%。浮选机的混合时间随表观气速增加而减小,随循环液量的增加而减小,通气时的混合搅拌效果优于吸气时。Gas holdup and mixing time of a jet flotation machine was investigated. Gas holdup of the jet flotation machine increased with the rise of superficial gas velocity and circulation liquid velocity when as liquid ratio was from 0.05 to 0.4 m3/min（G）/m3（L）. Average gas holdup of inhaled gas was higher than that gas was ventilated. Mixing time of the jet floatation machine decreased with the rise of both superficial gas velocity and circulation liquid velocity. Ventilated gas cost less time on mixing than liquid jet inhaled gas.

关 键 词：喷射浮选机 气含率 表观气速 混合时间 

分 类 号：TD456[矿业工程—矿山机电]