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Apparatus for the direct reduction of iron using gas from coal

Patent ·
OSTI ID:5867220
; ;
A method and apparatus for the direct reduction of iron in which a fossil fuel is gasified to produce a hot gas which is tempered with a carbon dioxide lean gas. The mixture is reacted with carbon to upgrade it in reducing potential and is desulfurized by reaction with lime in a first shaft furnace to form a hot reducing gas. The hot reducing gas is utilized as the reductant in a counterflow shaft reduction furnace and the spent reducing gas is recycled as tempering gas for the gas from the hot gasifier. The apparatus includes a gasifier, counterflow shaft gas reactor, a shaft type direct reduction furnace and associated equipment.
Assignee:
Midrex Corp
Patent Number(s):
US 4205830
OSTI ID:
5867220
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COAL GAS
COAL GASIFICATION
DESULFURIZATION
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
GASIFICATION
IRON COMPOUNDS
IRON OXIDES
MATERIALS
OXIDES
OXYGEN COMPOUNDS
RECYCLING
REDUCTION
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS