Aqueous suspensions of finely ground raw brown coal from Victoria, Australia, have been tested in a Couette viscometer to evaluate their rheological properties. Shear rates covered the range l-800 s-r and median particle sizes were 641 pm. Concentrations up to 0.6 volume fraction were examined. The
Viscometry and rheology of coal water slurry
โ Scribed by Shirley C. Tsai; Everett W. Knell
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 848 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0016-2361
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โฆ Synopsis
This paper presents the results of a detailed experimental study on rheological behaviour of coal water slurry (CWS). In contrast to earlier rheological studies at shear rates of rather narrow ranges, this study covered a much wider range of shear rates: G3OOs -' in a rotational viscometer and 40&1OOOOs-' in a capillary
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The effect of pH on the rheological properties of raw Morwell brown coal slurries has been examined using a Couette viscometer and the results were analysed on the basis of the Bingham plastic model. The plastic viscosity and Bingham yield stress behaved independently. It was found that as the pH wa
Measurements of the real portion of the dielectric constant of coal-water slurries at 750MHz are reported. Slurries of 40-65wt% of either Illinois No. 6, Utah bituminous or Texas lignite coals over the temperature range 11-71 "C were studied. The dielectric constant was independent of coal type and