Patent
Process for reducing iron oxide to metallic sponge iron with liquid or solid fuels
TLDR
In this paper, an economical process is provided for the direct reduction of iron ore by the efficient production of a reducing gas when the external source of fuel used in the process is a liquid or solid.Abstract:
An economical process is provided for the direct reduction of iron ore by the efficient production of a reducing gas when the external source of fuel used in the process is a liquid or solid. A gasifier facility converts a minimal amount of fuel to a gas comprised principally of reductants which is supplemented with reductants reclaimed from the reacted off-gas produced in the reduction process. A controlled amount of water vapor is added to the gas mixture which is heated to approximately reduction furnace temperature before undergoing a shift reaction to equilibrium externally of the furnace to produce a reducing gas having a preferred gas composition.read more
Citations
More filters
Patent
Method for co-producing fuel and iron
TL;DR: In this article, a method for the co-production of fuel and iron from coal and from iron ore was proposed, which is comprised of heating the coal in the absence of oxygen to make a raw coal gas and a residual coke, and increasing the content of free hydrogen in the coal gas through the cracking against a desulfurizing hot reagent, of the hydrocarbons contained in the gas in order to yield a hydrogen rich, desulfurized, hot reducing synthetic gas.
Patent
Controlling carburization in the reduction of iron ore to sponge iron
TL;DR: In this article, a method for inhibiting metal-bearing material in the reduction zone of a vertical shaft, moving bed reactor for the direct gaseous reduction of iron ore to sponge iron is presented.
Patent
Method and device for producing a raw synthesis gas
TL;DR: In this article, a method and a device for producing a gas containing hydrogen (H 2 ) and carbon monoxide (CO) as a starting material for a chemical use, eg. in synthesis processes based on export gas from a metallurgical process is described.
Patent
Method and apparatus for the direct reduction of iron ores utilizing syngas
TL;DR: A direct reduction plant for the production of a metallized product (DRI) by the reduction of iron ores in lump or pellet form, wherein the reducing gas utilized in the DRI reactor contains acid gases such as sulphur compounds and carbon dioxide.
Patent
Shaft furnace for production of iron carbide
TL;DR: In this paper, the authors present an approach for the production of iron carbide in a shaft furnace by reacting a carbon containing reducing gas as the process gas with particulate metal oxide material for an extended residence time at low temperature.
References
More filters
Patent
Method of and apparatus for reducing iron oxide to metallic iron
Beggs D,Scarlett J +1 more
TL;DR: In this paper, a method and apparatus for reducing iron oxide to metallic iron, utilizing a continuous process employing a reducing gas with a high H2 and CO content made by catalytically reforming a mixture of gaseous hydrocarbon and reacted off-gas from the reduction process.
Patent
Method and apparatus for controlling the composition of a reducing gas used to reduce metal ores
TL;DR: In this article, an approach for controlling the addition of steam to recycled gas circulating in a closed loop including the reduction zone of a reactor and a catalytic reformer is described.