新型干法分选机分选过程影响因素分析  

Analysis on influencing factor of separation process of a new-style dry separator

作　　者：曾鸣[1] 魏汝晖[1] 梁世红[1] 王向浩[1] 韦鲁滨[1] 

机构地区：[1]中国矿业大学(北京)化学与环境工程学院,北京100083

出　　处：《煤炭学报》2011年第5期845-848,共4页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(50774087);国家高技术研究发展计划(863)资助项目(2007AA05Z315);中央高校基本科研业务费专项资助项目(2010YH06)

摘　　要：设计了一种新型空气重介质流化床,利用振动反倾角工作面替代刮板排出矸石。采用正交法对影响新型干法分选机分选和输送效果的主要因素进行了实验研究和方差分析,结果表明:风量和振动频率对分选效果有高度显著的影响,风量、振动频率以及实验时间对输送效率都有高度显著的影响,风量Q=160 m3/h、振动频率f=16.6 Hz、实验时间T=40 s时,可能偏差Ep=0.055 g/cm3、输送效率90%,取得了理想的分选和输送效果。A new-style air-dense medium fluidized bed was designed.It has eliminated the scraper device by using a vibratory working surface of counter-inclination angle to transport gangues.Studied the main separation characteristics of new-style fluidized bed on separation and transportation with orthogonal experiments.The results show that the air flow rate and the frequency have a highly significant effect on separating,and the air flow rate,the frequency and the test time have a highly significant effect on transportation.The probable error Ep value is 0.055 g/cm3 and the efficiency of transportation is 90%,when the air flow rate is 160 m3/h,the frequency is 16.6 Hz,the test time is 40 s.The new-style fluidized bed gains a good transportation and separation effect.

关 键 词：干法分选 空气重介质流化床 正交法 方差分析 

分 类 号：TD922.7[矿业工程—选矿]