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Particle Concentration and Mixing Characteristics of Moderate-to-Dense Solid−Liquid Suspensions
- Source :
- Industrial & Engineering Chemistry Research; November 2003, Vol. 42 Issue: 24 p6236-6249, 14p
- Publication Year :
- 2003
-
Abstract
- Mixing time, power consumption, and solids concentration were measured in solid−liquid flow in a T = 290 mm vessel stirred by a Rushton turbine (D = T/3). The influence of particle size, density, and concentration, as well as impeller off-bottom clearance, on the mixing characteristics of two-phase flow was studied in the Reynolds number range 10 000 < Re < 200 000 for concentrations up to 15.5 vol %. The mixing time measurements revealed the presence of a peak in the number of revolutions necessary to achieve full mixedness, in comparison to the single-phase results. Power consumption was determined with a strain gauge technique, and the power number variation with impeller speed showed a similar trend for all slurries tested. The local solids concentration was measured at different heights and radii in the vessel using a conductivity probe to study the quality of solids distribution and the amount of solids suspended with speed.
Details
- Language :
- English
- ISSN :
- 08885885 and 15205045
- Volume :
- 42
- Issue :
- 24
- Database :
- Supplemental Index
- Journal :
- Industrial & Engineering Chemistry Research
- Publication Type :
- Periodical
- Accession number :
- ejs5463236