ZHANG Peng(Tangshan Branch,Tiandi Science & Technology Co.,Ltd.,Tangshan 063012,China)To resolve the problems of Huipodi coal preparation plant in the flotation system,such as low tailings ash,large agent consumption,poor processing capacity for coarse fraction slime,unstable liquid surface,susceptible coal slurry absorption ability,analyse the XJX-T16 flotation machine,find that its double slant swing inclined impeller,the feeding mode of center sleeve and inflatable dead zone inside the tank from the sleeve radius of 300 mm area lead to these issues.Based on the structural characteristics of XJM-S series flotation machine,add feed box in flotation of nose slot,design new XJM-S mixing bodies and false bottom steady flow board,weld flotation machine welding between tank submerged mine boxs,reduce the mixing motor power to 37 kW,project new small pulley diameter.After transformation,the flotation machine can recover part of coarse fraction slime in feed coal,improve the flotation selectivity for high-ash fine clay(quite fine-grained level).Low energy consumption of the flotation system,improve the economic efficiency of Huipodi coal preparation plant by 3.50 million yuan every year.The total power of two sets of preparation machine reduce by 80 kW,save power cost 0.25 million yuan,electrical machine replacement cost 0.12 million yuan annually.
2012 05 v.18;No.81 [Abstract][OnlineView][Download 178K]