The Effect of Solid Particles on Liquid Viscosity

The viscosities of solid‐liquid mixtures were experimentally determined for silicon oil‐paraffin system at room temperature and solid‐liquid oxide mixture at steelmaking temperature. The use of oil‐paraffin systems was to confirm the results of high temperature measurements, the experimental conditi...

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Bibliographic Details
Published in:Steel research 2011-04, Vol.82 (4), p.388-397
Main Authors: Wu, Liushun, Ek, Mattias, Song, Minho, Sichen, Du
Format: Article
Language:English
Subjects:
Control systems
Einstein-Roscoe model
Iron and steel making
Liquids
Mathematical analysis
Mathematical models
Silicon
Slag
TECHNOLOGY
TEKNIKVETENSKAP
Temperature measurement
Two-phase mixture
Viscosity
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Summary:The viscosities of solid‐liquid mixtures were experimentally determined for silicon oil‐paraffin system at room temperature and solid‐liquid oxide mixture at steelmaking temperature. The use of oil‐paraffin systems was to confirm the results of high temperature measurements, the experimental conditions being very difficult to control. The silicon oil‐ paraffin mixtures behaved Newtonian until the particle fraction reached 0.15. At this fraction, the mixture started deviate from Newtonian flow; though some average values could still be collected with very high uncertainty. Liquid‐2CaO.SiO2 mixtures and liquid‐MgO mixtures were studied at steelmaking temperature with carefully prepared particle fractions and well controlled conditions. Liquid‐2CaO.SiO2 mixture behaved Newtonian even when the particle fraction reached 0.1. The results of both room temperature measurements and steelmaking temperature measurements were used to examine the applicability of the existing models. Einstein‐Roscoe equation was found to be the only model applicably for the systems studied. No modification of the model parameter was found necessary, though the particles were not spherical.
ISSN:1611-3683
1869-344X
0177-4832
1869-344X
DOI:10.1002/srin.201000207