A direct reduction apparatus and process

C - Chemistry – Metallurgy – 21 – B

Patent

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Details

C21B 13/00 (2006.01) C21B 13/14 (2006.01)

Patent

CA 2566320

An apparatus for reducing a metalliferous material in a fluidised bed comprises a vessel for containing the fluidised bed, a means for supplying the metalliferous material, a solid carbonaceous material, an oxygen-containing gas, and a fluidising gas into the vessel for forming the fluidised bed in the vessel. The oxygen-containing gas supply means comprises one or more than one oxygen-containing gas injection lance having a lance tip with an outlet that is positioned for injecting the oxygen-containing gas in a downward flow into the vessel within a range of plus or minus 40 degrees to the vertical.

Cette invention concerne un appareil permettant de réduire une matière métallifère dans un lit fluidisé et comprenant une cuve contenant le lit fluidisé et une unité permettant d'introduire la matière métallifère, un matériau carboné solide, un gaz contenant de l'oxygène et un gaz de fluidisation dans la cuve pour former le lit fluidisé dans la cuve. L'unité d'alimentation en gaz contenant de l'oxygène comprend une ou plusieurs lances d'injection de gaz contenant de l'oxygène comportant une pointe de lance dotée d'un orifice d'évacuation qui est positionné de manière que le gaz contenant de l'oxygène soit injecté en un écoulement descendant dans la cuve dans une gamme de plus ou moins 40 degrés par rapport à la verticale.

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