Production of blast furnace coke via novel briquetting system
AssigneeConoco Inc.
InventorsGeorge E. Wasson, Frank W. Theodore
Life of this patent
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Abstract
A method of making high strength coke briquettes suitable for use as blast furnace coke comprising, (a) providing coal, (b) heating the coal at a temperature at or above the softening point of the coal to form partially carbonized char, (c) cooling the partially carbonized char below the softening point of the coal, (d) mixing the cooled partially carbonized char and tar to form a mixture of tar and partially carbonized char, (e) briquetting the mixture of tar and partially carbonized char to form briquettes of tar and partially carbonized char, (f) calcinating the briquettes to form high strength briquettes.
Claims11
A method of making high strength coke briquettes comprising the sequence of steps as follows:
- (a) providing coal,
- (b) heating said coal to partial carbonization temperatures at or above the softening point of said coal and below the temperature at which said coal loses a substantial portion of its caking property, to form partially carbonized char,
- (c) cooling said partially carbonized char to below the softening point of the coal,
- (d) mixing said cooled partially carbonized char and tar to form a mixture of tar and partially carbonized char,
- (e) briquetting said mixture of tar and partially carbonized char at a temperature below the softening point of coal to form briquettes of tar and partially carbonized char,
- (f) calcinating said briquettes to form high strength briquettes.
Dependencies are inferred from the claim text.