摘要
针对细煤泥含量高及浮选困难的问题,进行了先反浮选后正浮选的两段浮选试验研究,试验结果表明,以淀粉为抑制剂、十二胺盐酸盐为捕收剂进行反浮选,可以脱除约20%的高灰细泥;对矿浆进行强烈搅拌和使用氢氧化钠调浆,可以消除淀粉对煤的抑制作用和改变十二胺药剂的存在状态;然后进行常规正浮选,可以获得合格质量精煤。反、正两段浮选工艺为高细泥含量难浮煤泥的浮选提供了一条新的途径。
Aiming at problem of difficult to float with high content fine slime, the authors conducted two stage flotation experimental study: firstly reverse flotation and then direct flotation. The results showed: the reverse flotation with starch depressor and lauryl amine hydrochloride collectors can remove about 20 % fine slime with high ash; violent stirring pulp and using natrium hydroxydatum to mix the pulp can eliminate inhibiting effects of starch for coal and change existential state of lauryl amine medicament; and then conducting regular direct flotation can get qualified clean coal. The reverse-direct flotation float coal slimes with high content of fine slime.
出处
《中国煤炭》
北大核心
2015年第7期95-99,共5页
China Coal
关键词
细煤泥
两段浮选
药剂制度
反浮选
fine slime, two-stage flotation, reagent rules, reverse flotation