In this paper,the density composition of 6～3 mm clean coal,middlings and gangue of heavy medium cyclone in Dongqu Coal Preparation Plant was analyzed,and then the distribution rate and mismatch content were calculated,and the suggestions for the density control of heavy medium cyclone were proposed.In addition,grinding-flocculation flotation experiments for the middlings with the density of 1.40～1.80 g/cm3 were conducted.The results showed that when the grinding fineness was 75.85%-0.010 mm,the clean coal with a yield of 40.44%and an ash content of 11.75%was obtained by flocculation flotation under the addition of 1000 g/t sodium hexametaphosphate,7 g/t PAM,1500 g/t kerosene and 200 g/t sec-octyl alcohol.
关键词
重介质旋流器/中煤/磨矿/絮凝浮选
Key words
heavy medium cyclone/middlings/grinding/flocculation flotation
维普
万方数据