METHOD FOR MANUFACTURING COAL BRIQUETTES FOR BEING USED IN MANUFACTURING MOLTEN IRON AND APPARATUS FOR THE SAME

• Main Authors: HEO, NAM HWAN, LEE, HOO GEUN, YI, SANG HO, RYOU, JIN HO, KIM, SEUNG WAN, SON, CHANG IL
• Format: Patent
• Language: English; Korean
• Published: 11.06.2014
• Subjects: ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; CHEMISTRY; FIRELIGHTERS; FUELS; FUELS NOT OTHERWISE PROVIDED FOR; LIQUEFIED PETROLEUM GAS; LUBRICANTS; METALLURGY; NATURAL GAS; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K; TECHNICAL GASES CONTAINING CARBON MONOXIDE

Provided are a coal briquette having excellent hot strength and a manufacturing method thereof. The method for manufacturing the coal briquette is applied for charging in a dome portion of a molten gas furnace and rapid heating in a molten iron manufacturing apparatus that includes i) a molten gas furnace in which reduced iron is charged; and ii) a reduction furnace that is connected to the molten gas furnace to provide the reduced iron. The method for manufacturing the coal briquette includes i) a step for providing powdered coal; ii) a step for providing a coke by-product that suppresses the high-temperature powdering of the coal briquette; iii) a step for providing a curing agent and a binder; iv) a step for providing a mixture by mixing the powdered coal, the coke by-product, the curing agent, and the binder; and v) a step for providing the coal briquette by molding the mixture. In the step for providing the mixture, the amount of the coke by-product contained in the coal briquette is greater than zero and is equal to or less than 30 wt%.