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- W1591547551 abstract "Investigations were conducted with the goal of preparing coal oils for use in coal flotation by preliminary emulsification. When added to the slurry, this oil is rapidly and uniformly distributed over the surface of the coal particles. The emulsification was conducted by mechanical dispersion in a laboratory agitator. (Under industrial conditions this process may be conducted in a centrifugal pump). A neutralized solution of acid tar (a waste from the sulfuric acid purification of crude benzol) was used as the emulsifier and emulsion stabilizer. The concentration of sulfonic acids was about 48%. Stable homogeneous emulsions were obtained at a concentration of oil up to 20% and neutralized tar of 0.2%. The size of the oil droplets in the emulsions was 2-10 microns. Experimental testing was conducted on a Mekhanobr laboratory flotation machine with a chamber 1 litter in volume. Unemulsified and emulsified coal oils from the tar refining division of the Makeevka Coke Works were investigated; screenings from the charge of the Yasinovka Coke Works (the below-0.5-mm size class) were floated. As a comparison experiments with the traditional kerosene reagent were conducted. In the experiments with anthracene oil, pitch distillates and kerosene, T-66 frothing agent was added at 140 g/tonmore » of sludge; during the work with wash oil and naphthalene exudates T-66 was not added, assuming that the water-soluble phenols and bases contained in these oils have adequate frothing capacity. 5 references, 2 figures.« less" @default.
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- W1591547551 date "1983-01-01" @default.
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- W1591547551 title "Emulsified coal oils as flotation reagents" @default.
- W1591547551 hasPublicationYear "1983" @default.
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