采用选择性絮凝剂,对煤中可燃体与非可燃体进行分离,称为选择性絮 凝。笔者对大屯、八一、大武口等5个选煤厂和煤矿的极细粒煤泥进行了大量的 试验,证明该法可作为极细粒煤泥的分选方法,并具有较好的选择性。经分选, 一般精煤灰分为12-13％,最低为5.73％,可燃体回收率达90％以上,两产品 之间灰分差一般在50％左右,效果较好。因此,是一种较有前途的方法,可用 在分级浮选中,作为极细粒煤泥的分选方法。 Selective flocculant, the combustible coal and non-combustible body separation, known as selective flocculation. The author of Datun, Bayi, Dawukou and other 5 coal preparation plant and coal very fine coal slime carried out a large number of tests that the method can be used as a very fine slime sorting method, and has a good Selective. After sorting, the general fine ash is divided into 12-13%, a minimum of 5.73%, combustible body recovery rate of 90% or more, the difference between the two products generally about 50% ash, the effect is better. Therefore, it is a more promising method that can be used in the classification of flotation, as a very fine slime sorting method.