Method of making steel

C - Chemistry – Metallurgy – 21 – C

Patent

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C21C 7/04 (2006.01)

Patent

CA 2643252

A method of making steel in an electric arc furnace is provided. The method comprises the steps of charging a steelmaking furnace with an iron source, wherein the iron source is melted and refined in the steelmaking furnace during a campaign, providing a source of lime that is screened by a first screening device, compacting the lime material adjacent to the steelmaking furnace to a predetermined size, charging the compacted lime to the steelmaking furnace within a short period of time to avoid degradation of the compacted lime, and adding additional fluxing agents and additives to the steelmaking furnace to produce refined steel in the campaign.

L'invention concerne un procédé de fabrication d'acier dans un four électrique à arc. Le procédé comprend les étapes d'introduction d'une source de fer dans un four de fabrication d'acier, ladite source de fer étant fondue et raffinée dans le four de fabrication d'acier pendant une campagne, permettant d'obtenir une source de chaux vive qui est examinée par un premier dispositif de criblage, de compactage du matériau à base de chaux vive à côté du four de fabrication d'acier en une taille prédéterminée, d'introduction de la chaux vive compactée dans le four de fabrication d'acier en un court intervalle de temps afin d'éviter la dégradation de la chaux vive compactée, et d'ajout de fondants et d'additifs au four de fabrication de l'acier pour obtenir de l'acier raffiné lors de la campagne.

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