粗颗粒煤炭流化床浮选试验研究  

Experimental research on flotation of coarse coal particles in fluidized bed

作　　者：王冬冬[1] 王怀法[1] WANG Dong-dong, WANG Huai-fa(College of Mining Technology, Taiyuan University of Technology, Taiyuan 030024, Chin)

机构地区：[1]太原理工大学矿业工程学院,山西太原030024

出　　处：《煤炭工程》2018年第5期123-126,130,共5页Coal Engineering

基　　金：山西省科技创新计划资助项目(2010102010)

摘　　要：以2.0~0.5mm宽粒级煤炭粗颗粒为研究对象,用实验室流化床,对煤炭颗粒进行流化床浮选试验。采用Design-Expert 8.0软件,对窄粒级低密度级煤炭颗粒进行优化设计,对不同粒径颗粒浮选最优解进行归纳。并对全粒级全密度级进行流化床浮选,结果表明,当上升水流速度为1.39cm/s,气流表观速度为0.104cm/s,捕收剂药剂用量为72g/t时,精煤灰分为12.23%,尾煤灰分为54.94%,精煤产率为45.06%。The experiment is carried out using the laboratory fluidized bed,on the research object of the 2. 0 ~ 0. 5 mm coarse coal particles. The optimization design of narrow size fraction,low-density coal particles is carried out with designexpert 8. 0 software,and the optimal solution for the flotation of different size particles is carried out. The full-grade fulldensity fluidized bed flotation is carried out, the results show that, the concentrate ash is 12. 23%, tailings ash is54. 94% and clean coal yield is 45. 06%,at the rising flow velocity of 1. 39 cm/s,airflow apparent velocity 0. 104 cm/s,collector reagent dosage 72 g/t.

关 键 词：粗颗粒 宽粒级 流化床 浮选 

分 类 号：TD94[矿业工程—选矿]