射流浮选柱充气机理的研究  

A STUDY OF AERATION MECHANISM OF FREE JET FLOATATION COLUMN

作　　者：姜志伟[1] 黄波[1] 李幼竹 

机构地区：[1]中国矿业大学北京研究生部

出　　处：《煤炭学报》1995年第4期432-436,共5页Journal of China Coal Society

基　　金：煤炭工业部留学回国人员基金

摘　　要：射流浮选柱是一种新型的浮选设备，用于细粒及微细粒物料的分选时，它具有良好的选择性和分选精度，获得适度的充气率对浮选柱的设计和操作十分重要，试验研究表明：入料喷嘴的出口压力、起泡剂的用量和混合管的埋入深度是影响射流浮选柱空气吸入量的主要因素，同时混合管内的空气含量分布是不均匀的，最高处可达６０％～７０％。Free jet floatation column is a new device, which has good selectivity and high separation efficiency in treating fine and ultra fine materials. Adequate aeration rate is of significant importance for design and operation of the column. Test results showed that slurry feed pressure at jet nozzle,frother dosage and the depth of the mixing tube were main factors affecting aeration rate of the column.Air content in the mixing tube varied with the tube height, with a maximum value of about 60%￣70%near the central section of the tube.

关 键 词：浮选柱 射流 洁净煤技术 选灯 浮游选矿 

分 类 号：TD456[矿业工程—矿山机电]