摘要
为实现浮选机的大型化、高效化、节能化,设计了45 m3机械搅拌式浮选机。阐述了45 m3机械搅拌式浮选机的结构和工作原理,重点分析了浮选机的槽体、叶轮、定子、刮泡机构、假底稳流板等关键部件的设计要求。浮选机清水性能试验表明:叶轮转速137.58 m/s,浸没深度895 mm时,浮选机工艺指标最优。45 m3机械搅拌式浮选机在大阳泉选煤厂的应用结果表明:改造后浮选精煤灰分为10.69%,尾煤灰分为55.35%,浮选精煤产率为68.03%,满足生产要求,且浮选机对不同粒级煤泥都有很好的回收效果。与FCMC3000浮选柱相比,在入料灰分相差不大的情况下,XJM-S45浮选机的尾煤灰分、精煤产率、可燃体回收率、浮选完善指标分别提高了18.61%、18.84%、23.90%、18.30%。
Research and design a 45 m3 mechanical flotation machine in order to achieve a large-scale,high efficiency,energy conservation flotation machine.Describe the structure and operating principle of the flotation machine,focus on the structural design of the tank impel-ler,stator,scraping bubble agencies,steady flow plates in the flotation machine.The performance test by water flotation machine show that, when the impeller speed is 137.58 m/s,immersion depth is 895 mm,the flotation machine has a optimal process indicators.The application of 45 m3 mechanical flotation machine in Dayangquan coal preparation plant shows that,the ash of clean coal is 10. 69%,the ash of tailings is 55.35%,the yield of clean coal is 68.03%.The flotation machine has good recovery effects on different size fractions slime.Compared with FCMC3000 flotation column,in the case of the feed ash has a little difference,the tailings ash,coal yield,combustible body recovery, improve index of the XJM-S45 flotation machine flotation increased by 18.61%,18.84%,23.90%,18.30%.
出处
《洁净煤技术》
CAS
2014年第4期11-14,共4页
Clean Coal Technology
基金
科研院所技术开发研究专项资金资助项目(2008EG122187)
关键词
浮选机
大型化
叶轮
转速
浸没深度
flotation machine
large-scale
impeller
speed
immersion depth
