Midrex International, B.v., Rotterdam, Zurich Branch

Midrex Corporation

Midrex International B.v. Rotterdam

Frank V Summers

David C Meissner

John C Scarlett

Ronald Brown

Glenn E Hoffman

A highly efficient method and apparatus for production of molten iron using coal by coal gasification in a molten iron gasifier-melter. The gasifier-melter is coupled to a direct reduction shaft furnace and utilizes both the gaseous and solid output of the shaft furnace. The process is especially efficient when using non-metallurgical coals.

Method and apparatus for producing molten iron using coal

A method for forming a reducing gas in a molten metal bath gasifier and simultaneously directly reducing iron oxide in a shaft furnace with the gas thus produced, wherein the bath coolant is preferably provided by cleaned recycle gas from the direct reduction shaft furnace.

Method of generating a reducing gas

Apparatus for generating a reducing gas in a molten iron bath gasifier while simultaneously producing direct reduced iron oxide in an associated shaft furnace with the gas from the gasifier. The apparatus includes means for controlling the temperature of the reducing gas to the shaft furnace, means for cleaning, upgrading, and introducing spent top gas from the direct reduction furnace to the molten bath gasifier as a gaseous coolant to cool the reaction with the bath and reduce refractory wear within the gasifier.

Apparatus for generating a reducing gas

A method of producing direct reduced iron with fluid bed coal gasification in which a portion of cooled, recycled gas is used as coolant in the gasification chamber and a second portion of the cleaned recycled gas is heated and mixed with the hot, dust-free gasification gas to form reducing gas for the direct reduction process. Limestone is preferably mixed with the pulverized coal feed to the gasification chamber to desulfurize the gas.

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Charlotte, NC, United States of America

Frank V Summers