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- W85759825 abstract "Samples of stable coal-oil slurries have been prepared with coal concentrations ranging from 30% to 50% by weight. Extensive rheological data were obtained using capillary and cone and plate viscometers for all five samples of the coal-oil slurry and No. 6 fuel oil which served as a reference fluid. The temperature range was 130/sup 0/F to 180/sup 0/F and we covered a wide range of shear rates 2 to 2500 sec/sup -1/. Viscosity measurements show coal-oil slurries to be shear thinning suspensions, i.e., the viscosity decreases moderately with increasing shear rates. In the concentration range of 30% to 40% coal, the slurry shows a predominantly Newtonian behavior. For slurries with concentrations higher than 40% coal we observe a yield point ranging from 5 to 20 dyne/cm/sup 2/ depending upon the sample and test conditions. Shear thinning effects also start to be evident. In addition, rheological properties were studied using a rotating rod viscometer. The study of these samples of coal-oil slurries with the rotating rod viscometer indicates migration of coal particles away from the rotating rod with no noticeable rod climbing, thus no evidence of normal stress effects." @default.
- W85759825 created "2016-06-24" @default.
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- W85759825 date "1981-01-01" @default.
- W85759825 modified "2023-09-27" @default.
- W85759825 title "Rheology studies of coal/oil slurries related to spray formation and slurry stability. Final report" @default.
- W85759825 hasPublicationYear "1981" @default.
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