针对新元选煤厂浮选精煤灰分偏高的问题,通过实验室浮选,发现1次浮选工艺不但易造成低灰粗颗粒精煤的损失,还会导致精煤中存在大量高灰细泥的污染,难以在获得较低精煤灰分的同时获得较高的精煤产率,提出1次粗选+精选浮选工艺来处理该厂煤泥。试验结果表明:1次精选工艺可显著降低浮选精煤灰分,同时保证了浮选精煤产率,对新元选煤厂及其他动力煤选煤厂的浮选降灰提质增效具有指导意义。 Aiming at the problem of high ash content of flotation coal in Xinyuan Coal Preparation Plant, it is found that flotation process in one flotation process not only causes the loss of low-ash and coarse-grained coal but also leads to a large amount of high-ash Fine mud pollution, it is difficult to obtain lower coal ash at the same time get a higher yield of refined coal, proposed a rough selection + selection flotation process to deal with the plant slime. The test results show that the first selection process can significantly reduce the ash content of flotation of clean coal while ensuring the flotation yield of refined coal and the flotation efficiency of Xiyuan Coal Preparation Plant and other thermal coal preparation plant Guiding significance.