学术论文

Fine coal dry cleaning using a vibrated gas-fluidized bed

发布者:系统管理员发布时间:2018-08-06浏览次数:989

 

Xuliang Yang  Yuemin Zhao  Zhenfu Luo  Shulei Song  Chenlong Duan  Liang Dong  

Fuel Processing Technology ,2013,106:338–343
摘要

Fine coal (−6 mm) cleaning in a dry way becomes more important with the extensive deployment of the mechanized mining and progressively serious water shortage, especially in North-West China. In this paper, we attempted to use the segregation in a vibrated gas-fluidized bed of dissimilar particles to provide a solution to this problem. The effects of several factors including the superficial air velocity, bed height, vibration intensity and fluidizing time on the segregation performancewere experimentally studied. The bubble-driven jiggingmechanism was proposed to explain the separation process. The results show that the probable error E values of the separation of −6+3 mm and −3+1 mm size fraction of feed coal samples are 0.19 and 0.175 respectively, which indicates that fine coal separation using a vibrated gas-fluidized bed can provide a simple and efficient way for coal cleaning in dry and cold regions in North-West China.

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