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Effect of surfactants on the rheology of hematite slurries
Author(s) -
Jennings Harley Y.
Publication year - 1969
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02540619
Subject(s) - hematite , slurry , dispersant , rheology , viscosity , chemical engineering , particle size , aqueous solution , particle (ecology) , materials science , particle size distribution , apparent viscosity , mineralogy , chemistry , dispersion (optics) , composite material , geology , organic chemistry , physics , oceanography , optics , engineering
The rheological behavior of aqueous hematite slurries has been studied by laboratory viscosity and flow measurements. Data are presented for slurries with volume concentrations of hematite up to 40%. Solids concentration and particle size distribution were found to be important variables in the rheological behavior of hematite slurries as contrasted to temperature which was found to have only a small effect. Chemical dispersant additives and viscosity control additives used in relatively small concentrations improved the flow characteristics of the hematite slurries. Specifically, a lignosulfonate dispersant markedly increased the flow of slurries containing finely divided hematite, −325 mesh, and a viscosity control additive increased the carrying capacity of other slurries for coarse particles.