射流流膜选矿  

INJECTION-FLOWING FILM CONCENTRATION——A NEW CONTINUOUS CENTRIFUGAL SEPARATION PROCESS

作　　者：吕永信[1] 

机构地区：[1]北京矿冶研究总院

出　　处：《有色金属》1989年第1期35-41,共7页Nonferrous Metals

摘　　要：本文提出了—种新的微细物料连续排矿离心分选过程——离心射流流膜分选过程,并讨论了该过程的分选原理。新过程以高压水射流强冲击力、强离心沉降力和拜格诺力所组建的瞬变联合分选力场为基本特征。该力场中的瞬变脉动流膜不仅具有强化沉积粒群松散和分层作用,而且其所形成的“水力堰效应”可保证超细颗粒的回收,从而显著地提高薄流膜的分选效能。试验结果表明,锡石分选粒度下限为3微米。A new cenLrifugal separation process with continuous discharge for fine parti- cles called the centrifugal film concentration process with injection flow is devel- oped,and the separation principle of the process is discussed. The new process is basically characterized by a transient combined separation force field created by the strong impact force of high pressure water jet flow,the strong centrifugal settling force and the Bagnold force.The transient pulsating flow- ing film in the fiend can not only int...

关 键 词：injection flow injection impact pulsating film “hydraulic weir effect” 

分 类 号：TD862[矿业工程—金属矿开采] TF80[矿业工程—矿山开采]