干扰床分选机入料上下限确定及模拟研究

使用实验室自制干扰床分选机,对3-2 mm、2-1.5 mm、1.5-1.0 mm、1.0-0.5 mm和0.5-0.25 mm窄粒级粗煤泥进行分选试验,以溢流产率、溢流灰分及可燃体回收率为指标,得出分选粒度最佳上下限:1.0-0.25 mm。采用CFD软件fluent对1.5-0.25 mm粒级物料在干扰床分选机中的流态化运动进行模拟,进一步验证分选机体内各粒级分选状况。依据试验及模拟结果,对干扰床分选机入料粒级提出建议。

Research on Feed Range of Teetered Bed Separator and Simulation

Coarse slime separation of 3-2 mm、2-1. 5 mm、1. 5-1. 0 mm、1. 0-0. 5 mm and 0. 5-0. 25 mm were conducted by lab teetered bed separator,evaluated the separation effect with overflow yield,overflow ash,combustible recovery,the best feed range was 1. 0-0. 25 mm. Using the CFD sofeware fluent to simulate the fluidized bed of 1. 5-0. 25 mm graded material in the teetered bed separator,verified the separation condition of particle group in the separator. On the basis of the results of the experiment and simulation,put forward the proposal of teetered bed separator feed.