淮南矿区微细煤泥浮选规律研究

Research on Flotation Regularities of Fine Coal Slime in Huainan Mining Area

通过煤泥浮选速率试验,结合激光粒度分析,对-45μm微细煤泥浮选规律进行研究。结果表明:-45μm各窄粒级煤泥浮选速率由快到慢依次为-5、15~5、30~15、45~30μm;各窄粒级煤泥回收率与精煤带水量呈线性关系,粒径越小,线性关系越明显,受水流作用越大;运用Excel软件计算不同药剂量下各窄粒级煤泥和水量的浮选速率常数Kw,发现捕收剂对-45μm微细煤泥的浮选速率影响较大,起泡剂对水量回收速率影响较大,-45μm微细煤泥最佳浮选药剂制度为捕收剂400μL,起泡剂24μL。

Based on the results of flotation rate experiments and laser particle size analysis, the regularities of fine coal slime sized -4μm flotation were studied. The results show that flotation rate of various size decreases in the following order： -5, 15-5, 30-15, 45~30 μm; the product recovery of various size fractions and water-carrying volume showed a linear relationship, and the size is smaller, the linear relationship is more obvious and the effect of flow is greater; Excel software was used to calculate the flotation rate constant Kw of various size fractions and water-carrying volume with different reagents, show that the flotation rate constant Kw of fine coal slime sized -45μm is mainly determined by the collector, and the flotation rate constant Kw of water is mainly determined by the frother, the best flotation reagent system of fine coal slime sized -45 μm is that the collector dosage is 400 μL and the frother dosage is 24 μL.