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Effect of coal beneficiation process on rheology/atomization of coal water slurries. Quarterly progress report, April 1, 1995--June 30, 1995
| 题名： | Effect of coal beneficiation process on rheology/atomization of coal water slurries. Quarterly progress report, April 1, 1995--June 30, 1995 |
| 作者： | Ohene, F.; |
| 关键词： | 01 COAL, LIGNITE, AND PEAT; COAL PREPARATION; PERFORMANCE; FUEL SLURRIES; RHEOLOGY; PUMPING; PROGRESS REPORT; SHEAR PROPERTIES; VISCOSITY; ELASTICITY; SEDIMENTATION; FLOTATION; HEAVY MEDIA SEPARATION; CAPILLARY FLOW; PRESSURE DROP |
| 摘要： | The overall objective of this project is to perform experiments to understand the effect of coal beneficiation processes and high shear rheological properties on the atomization of coal-water slurries (CWS). In the atomization studies, the mean drop size of the CWS sprays will be determined at various air to CWS. A correlation between the high shear rheological properties, particle size distributions and the atomization will be made in order to determine the influence of these parameters on the atomization of CWS. Rheological properties of the CWS samples were determined after a six month storage period and the properties compared to freshly prepared samples. The rheological evaluations made include: flow characteristics under low shear rates; flow characteristics under high shear rates; and viscoelastic behavior under low frequency of oscillations. All the three CWS samples formed a hard pack solid at the end of the six month storage period, and had to be redispersed. The flotation cleaned coal and the heavy-media cleaned coal however, had the tendency to settle much faster than the uncleaned coal. Each of them remained completely dispersed during the duration of the testing period. |
| 总页数： | 10p |
| 报告类型： | 科技报告 |
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