煤泥絮团分散剂的应用研究  

Study for Application of Slime-flocculate Dispersants

作　　者：戚冬伟[1,2] 宋玲玲[2] 冯莉[2] 蒋欧[2] 

机构地区：[1]宿州职业技术学院基础教学部,安徽宿州234101 [2]中国矿业大学化工学院,江苏徐州221116

出　　处：《安徽科技学院学报》2011年第4期30-33,共4页Journal of Anhui Science and Technology University

基　　金：中国矿业大学理科专项基金项目(2010LKHX07);创新研究群体科学基金项目(50921002);教育部重大项目(308011);创新学者攀登计划项目(BK2008006)

摘　　要：分别采用六偏磷酸钠、羧甲基纤维素钠(CMC)作为分散剂,对夹河煤、开滦煤进行分散试验,以自制水煤浆体系黏度大小为表征方法,验证其分散效果;并经由浮选实验结果验证分散处理之后的煤泥浮选效果。结果表明,两种分散剂均使各分散体系的黏度值有所增加,达到了分散煤泥絮团的目的。经六偏磷酸钠分散后,夹河煤和开滦煤的精煤灰分及回收率,在一定范围内均有所提高,但是规律性不强;CMC分散性很好,但因其与捕收剂之间具有排斥作用,难以浮选出精煤,不可用于煤泥浮选浆体分散。The author conducted dispersion experiments for Jiahe and Kailuan coal respectively, using sodium hexametaphosphate, sodium carboxymethyl cellulose （CMC） as dispersants. The dispersion effect was verified by viscosity of CWS, and the result of coal flotation after decentralization verified by the flotation experiment. The result~ showed that： both the dispersants had increased viscosities of the dispersions, reaching the purpose of dispersing sludge flocculate. After beins dispersed by sodium hexametaphosphate, both Jiahe and Kailuan clean coal ashes, recoveries were improved within a certain range, but had no regularity; because of the repulsion be- tween CMC and the collector, the clean coal was difficult to float out, though it had better dispersion. So it could not be used as slime - flocculate dispersants of flotation.

关 键 词：煤泥絮团 分散剂 六偏磷酸钠 羧甲基纤维素钠 

分 类 号：X703[环境科学与工程—环境工程]