细粒煤强化离心场下密度分离模型研究  

Density separation model of enhanced centrifugal beneficiation for fine coal

作　　者：羡宇帅 陶有俊[1] 张岭[1] 张卫驰 

机构地区：[1]中国矿业大学化工学院煤炭加工与高效洁净利用教育部重点实验室,江苏徐州221116

出　　处：《中国矿业大学学报》2017年第1期177-182,共6页Journal of China University of Mining & Technology

基　　金：国家自然科学基金资助项目(51374206);国家自然科学基金创新群体项目(51221462)

摘　　要：提出了Falcon分选区内存在分离壁面的假设,并通过颗粒的受力分析证实了分离壁面的存在.以分离壁面为依托,推导出了Falcon理论分选密度公式,建立了Falcon密度差选模型.通过Falcon分选汶南细粒煤对模型进行了修正,得到了模型计算产率同实际产率间的修正系数.试验结果表明:反冲水压对修正系数的影响较大,反冲水压为0.02 MPa时,可选修正系数为1.05;反冲水压为0.01与0.03 MPa时,可选修正系数为1.10.Existence of separation wall in the Falcon sorting area was assumed and confirmed by the force analysis of particles. On this basis, the formula of Falcon theoretical separation densi- ty and the Falcon density separation model were derived. By separating Wennan fine coal, the Falcon density separation model was modified and the correction coefficient between the caicu- lative yield and the actual yield was obtained. Results show that the recoil water pressure has great influence on the correction coefficient. When the recoil water pressure is 0.02 MPa, the optional correction coefficient is 1.05; but when the recoil water pressure is 0. 01 and 0. 03 MPa, the optional correction coefficient is 1.10.

关 键 词：Falcon离心机 颗粒动力学 分离模型 

分 类 号：TD94[矿业工程—选矿]