Process for agglomerating coal
AssigneeAtlantic Richfield Company
InventorGeorge P. Masologites
Life of this patent
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Abstract
A method of agglomerating coal particles, a portion of the coal particles having a fine particle size comprising (a) separating at least part of the coal particles having a fine particle size to provide a first fraction of coal particles having a reduced coal fines content; (b) contacting a slurry of coal particles of the first fraction with hydrocarbon oil to form coal-oil agglomerates; and (c) recovering coal-oil agglomerates of reduced oil content.
Claims15
A method of agglomerating coal particles, a portion of the coal particles having a fine particle size comprising:
- (1) separating at least part of the coal particles having a fine particle size to provide a first fraction of coal particles having a reduced coal fines content;
- (2) contacting a slurry of coal particles of the first fraction with hydrocarbon oil to form coal-oil agglomerates;
- and
- (3) recovering coal-oil agglomerates of reduced oil content.
A method of agglomerating coil particles, a portion of the coal particles having a fine particle size comprising:
- (1) separating at least part of the coal particles having a fine particle size to provide (a) a first fraction of coal particles having a reduced coal fines content, and (b) a second fraction of coal particles having a fine size;
- (2) agitating a slurry of coal particles of the first fraction, water and hydrocarbon oil to form coal-oil agglomerates;
- (3) contacting an aqueous slurry of the coal-oil agglomerates with at least part of the coal particles from the second fraction;
- and
- (4) recovering coal-oil agglomerates of reduced oil content.
A method of beneficiating coal containing ash and iron pyrite mineral matter comprising:
- (1) reducing the coal size to form coal particles, and separating at least part of the coal particles having a fine particle size to provide (a) a first fraction of coal particles having a reduced coal fines content, and (b) a second fraction of coal particles having a fine size;
- (2) contacting an aqueous slurry of the coal particles of reduced size from step 1 or as fractions (a) and (b) with a promoting amount of at least one conditioning agent capable of modifying or altering the existing surface characteristics of the pyrite under conditions to effectuate alteration or modification of at least a portion of the contained pyrite,
- (3) contacting the slurry of coal particles of the first fraction with hydrocarbon oil to form coal-oil agglomerates;
- (4) contacting the aqueous slurry of the coal-oil agglomerates with at least part of the coal particles from the second fraction;
- and
- (5) recovering coal-oil agglomerates wherein the coal reduced iron pyrite and mineral content.
Dependencies are inferred from the claim text.