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القائمة البريدية
التصويت: الازمة المالية العالمية
للكاتبين :.
Mosa E. S.*, Saleh A. M.**, Taha A. T.*** and El-Molla A. M.****
* Lecturer Assis. Mining & Petroleum Eng. Dept., Faculty of Engineering, Al-Azhar University
**Assis. Prof. of Mineral processing, Mining & Petroleum Eng. Dept., Faculty of Engineering, Al-Azhar University.
** Prof. of Mineral processing, Mining & Petroleum Eng. Dept., Faculty of Engineering, Al-Azhar University
*** Prof. of Hydraulics, Civil Eng. Dept., Faculty of Engineering, Al-Azhar University
Abstract.
In the present paper the rheological characteristics of coal-water slurry (CWS) were
investigated. The studied factors included the effect of particle size and solid concentrations.
The power-law model was applied to determine the non-Newtonian properties using a
Chandler Engineering viscometer Model 3500LS+ (rotational viscometer) at shear rates from
0.1 to 600 S-1. The results showed that the slurry exhibited shear thinning, i.e. pseudoplasticbehaviour in the range of 0.1-600 S-1 shear rate. The degree of pseudoplasticity increased withthe decrease in mean particle size and with the increase of coal content. At low solid
concentrations the slurry may be considered as a Newtonian fluid.
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