Method for producing agglomerated material

C - Chemistry – Metallurgy – 22 – B

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C22B 1/14 (2006.01) C22B 1/244 (2006.01) C22B 1/245 (2006.01)

Patent

CA 2647279

A method is provided for producing an agglomerated material that is used for producing metallic iron by heat reduction in a moving hearth-type reducing furnace, wherein the agglomerated material can have a high mechanical strength without increases in the binder content and the moisture content of the material mixture. The method for producing an agglomerated material used for producing metallic iron, the metallic iron is produced by charging and heating the agglomerated material in a moving hearth-type reducing furnace to reduce an iron oxide contained in the agglomerated material with a carbonaceous reducing agent, wherein the agglomerated material is produced by wherein the agglomerated material is produced by agglomerating a material mixture containing the iron- oxide-containing material, the carbonaceous reducing agent, a binder, and moisture; drying the material mixture; wherein a carbohydrate is used as the binder and the material mixture is left to stand prior to the agglomeration.

Procédé de production de matériau aggloméré utilisé pour la production de fer métallique par réduction thermique dans un four réducteur du type à foyer mobile, ledit matériau pouvant avoir une haute résistance mécanique sans augmentations de la teneur en liant et de la teneur en humidité du mélange de matériaux. On décrit ce procédé comme suit: établissement de matériau aggloméré par agglomération de mélange de matériaux contenant un matériau qui contient un oxyde de fer, un agent réducteur carboné, un liant et de l'humidité; séchage du mélange; et chargement et échauffement dudit mélange dans un four réducteur du type à foyer mobile pour réduire l'oxyde de fer contenu dans le mélange en question par le biais de l'agent réducteur carboné, et un hydrate de carbone est utilisé comme liant, sachant que ledit mélange est laissé au repos avant l'agglomération.

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