Towards a mechanistic model for slurry transport in tumbling mills

被引：10
作者：
Govender, I. [1 ,2 ]
Tupper, G. B. [1 ,2 ]
Mainza, A. N. [2 ]
机构：
[1] Univ Cape Town, Dept Phys, ZA-7701 Cape Town, Western Cape, South Africa
[2] Univ Cape Town, Dept Chem Engn, Ctr Minerals Res, ZA-7701 Cape Town, Western Cape, South Africa
来源：
MINERALS ENGINEERING | 2011年 / 24卷 / 3-4期
关键词：
Slurry transport; PEPT; Comminution; Pressure; EMISSION PARTICLE TRACKING; VISCOUS FLOW; MOTION; MIXTURES; BEHAVIOR; POROSITY;
D O I：
10.1016/j.mineng.2010.08.010
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
A new modelling approach to slurry transport in dynamic beds based upon combining space and time-averaged Navier-Stokes equations with a new type of cell model is described. The resulting Ergun-like equation is used to correlate pressure drop with time-averaged distributions of the porosity, superficial fluid velocity and solids velocity for data derived from positron-emission-particle-tracking (PEPT) experiments in a scaled industrial tumbling mill fitted with lifter bars, pulp lifters and a discharge grate and run with particles and re-circulating slurry. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码：230 / 235
页数：6
相关论文
共 37 条
[1]  
[Anonymous], 2012, Low Reynolds number hydrodynamics: with special applications to particulate media
[2]   PARTICLE TRAJECTORIES AND SEGREGATION IN A 2-DIMENSIONAL ROTATING DRUM [J].
BAUMANN, G ;
JANOSI, IM ;
WOLF, DE .
EUROPHYSICS LETTERS, 1994, 27 (03) :203-208
[3]  
Bear J., 1972, Dynamics of Fluids in Porous Media
[4]  
Bird R. B., 1960, TRANSPORT PHENOMENA
[5]  
Darcy H., 1856, The Public Fountains of the City of Dijon
[6]   Competition of mixing and segregation in rotating cylinders [J].
Dury, CM ;
Ristow, GH .
PHYSICS OF FLUIDS, 1999, 11 (06) :1387-1394
[7]  
ERGUN S, 1952, CHEM ENG PROG, V48, P89
[8]  
EVANS RD, 1994, CHARACTERISATION NON
[9]   Improved experimental tracking techniques for validating discrete element method simulations of tumbling mills [J].
Govender, I ;
McBride, AT ;
Powell, MS .
EXPERIMENTAL MECHANICS, 2004, 44 (06) :593-607
[10]  
GOVENDER I, 2010, P COMM 2010 C APR 13
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