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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/7578

Title: AXIAL TRANSPORT OF GRANULAR SOLIDS IN ROTATING CYLINDERS .2. EXPERIMENTS IN A NON-FLOW SYSTEM
Authors: RAO, SJ
BHATIA, SK
KHAKHAR, DV
Issue Date: 1991
Publisher: ELSEVIER SCIENCE SA LAUSANNE
Citation: POWDER TECHNOLOGY, 67(2), 153-162
Abstract: 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.
URI: 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
ISSN: 0032-5910
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