A direct smelting process and apparatus

C - Chemistry – Metallurgy – 21 – B

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C21B 13/14 (2006.01) C21B 13/00 (2006.01) C21C 5/56 (2006.01) C22B 1/00 (2006.01) C22B 1/04 (2006.01) C22B 1/10 (2006.01)

Patent

CA 2338592

A process for direct smelting a metalliferous feed material is disclosed. Char and fuel gas are produced by pre-treating coal with an oxygen-containing gas. The fuel gas is used to heat an oxygen-containing gas and/or to produce an oxygen-containing gas in an oxygen plant. Metalliferous feed material, char, and the oxygen-containing gas are injected into a direct smelting vessel, and the metalliferous feed material is smelted to molten metal in the direct smelting vessel using the char as a source of energy and as a reductant.

Cette invention a trait à un procédé de fusion directe d'une matière de charge métallifère. On obtient un produit de carbonisation et le gaz de combustion par pré-traitement de houille à l'aide d'un gaz contenant de l'oxygène. On utilise le gaz de combustion pour chauffer un gaz contenant de l'oxygène et/ou produire un gaz contenant de l'oxygène dans une installation de production d'oxygène. On injecte la matière de charge métallifère, le produit de carbonisation et le gaz contenant de l'oxygène dans un cuve à fusion directe. La matière de charge métallifère est fondue dans cette cuve à fusion directe pour donner du métal en fusion et ce, à l'aide du produit de carbonisation comme source d'énergie et comme réducteur.

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