旋流微泡浮选柱提高精煤回收率的试验研究  

Experimental study on improving recovery of clean coal by cyclonic microbubble flotation column

作　　者：李彪[1] 谢广元[1] 张秀峰 郭柱[1] 

机构地区：[1]中国矿业大学化工学院,江苏省徐州市221116 [2]大地工程开发(集团)有限公司天津分公司,天津市河西区300201

出　　处：《中国煤炭》2011年第10期75-77,81,共4页China Coal

基　　金：国家自然科学基金(50974120);中央高校基本科研业务费专项资金资助(2010QNB08)

摘　　要：针对煤炭试样细粒级含量高的特性,依据浮选机试验确定的最优试验工艺条件,利用旋流微泡浮选柱进行了提高精煤回收率的试验,取得了精煤灰分7.78%、产率70.78%的良好分选指标。比较柱浮选和常规浮选试验,结果表明,在精煤灰分相接近的情况下,柱浮选的精煤产率要高9.32%。According to the characteristic of the coal sample with high content in fine fraction,the experiment on improving recovery of clean coal was taken by using a cyclonic microbubble flotation column on basis of flotation optimum technological conditions which were determined by routine flotation test,and a good separation index was obtained,the ash content of clean coal was 7.78% and the recovery was 70.78%.Comparison between column flotation and conventional flotation results,at approximately same concentrate ash,its yield by column flotation was 9.32 percent point higher.

关 键 词：浮选柱 浮选机 精煤产率 回收率 

分 类 号：TD943[矿业工程—选矿]