COAL CLEANING METHOD Russian patent published in 1994 - IPC

Abstract RU 2014350 C1

FIELD: coal and fuel industry. SUBSTANCE: method involves treating aqueous dispersion of coal with agglomerating mixture composed of light hydrocarbon (n-hexane, n-pentane, petroleum ether), boiling point not over 70 C, heavy hydrocarbon - coal-tar oil, boiling point 200-400 C and nonionogenic oil-like addition produced by controllable propoxylation of phenol fractions from coking coal tars, 0.02-1% of the mass of coal. Propoxylated phenol fractions are ethoxylated; heavy hydrocarbon is selected from anthracene oils, gas-scrubbing oils or mixture thereof. EFFECT: higher efficiency. 13 cl, 2 tbl

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RU 2 014 350 C1

Authors

Antonio Vettor[It]

Nello Passarini[It]

Armando Markotullio[It]

Dates

1994-06-15Published

1988-12-15Filed