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AXIAL TRANSPORT OF GRANULAR SOLIDS IN ROTATING CYLINDERS .2. EXPERIMENTS IN A NON-FLOW SYSTEM

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Title AXIAL TRANSPORT OF GRANULAR SOLIDS IN ROTATING CYLINDERS .2. EXPERIMENTS IN A NON-FLOW SYSTEM
 
Creator RAO, SJ
BHATIA, SK
KHAKHAR, DV
 
Description Experiments are reported here on the axial mixing of sodium carbonate and sodium bicarbonate in a batch, horizontal, rotating cylinder. The results show the effect of hold-up, particle size and speed of rotation on the axial dispersion coefficient and are interpreted in terms of the stochastic transport model recently proposed by the authors. A complementary approach invoking a surface diffusion coefficient in the thin cascade layer is also presented and applied to the data. This surface diffusivity forms a more fundamental transport parameter than the axial dispersion coefficient, and collisional theories of rapid flows of solids should provide a suitable route for its prediction. Correlations are developed here which relate the maximum angular deviation (defined in Part I), and the surface diffusion coefficient, with the characteristic translational kinetic energy and describe well the effect of variations in particle size, hold-up and speed of rotation.
 
Publisher ELSEVIER SCIENCE SA LAUSANNE
 
Date 2011-07-29T03:59:16Z
2011-12-26T12:47:44Z
2011-12-27T05:39:25Z
2011-07-29T03:59:16Z
2011-12-26T12:47:44Z
2011-12-27T05:39:25Z
1991
 
Type Article
 
Identifier POWDER TECHNOLOGY, 67(2), 153-162
0032-5910
http://dx.doi.org/10.1016/0032-5910(91)80152-9
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7578
http://hdl.handle.net/10054/7578
 
Language en