Direct smelting process with full combustion

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United States of America

PATENT NO 12018340
SERIAL NO

17042673

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Smelting metalliferous feed material process forming molten metal in smelting apparatus including smelt cyclone above and communicating with smelting vessel to contain molten metal and slag bath, including: partially reducing and melting feed material in smelt cyclone, allowing the molten partially reduced feed material flow downwardly into vessel, supplying oxygen-containing gas and carbonaceous material to vessel, smelting molten partially reduced feed material in molten metal and slag bath in vessel forming molten metal discharged from vessel and reaction products projected upwardly from molten bath, at least partially combusting combustible materials in reaction products in vessel space above molten bath, supplying oxygen-containing gas to smelt cyclone. Further combusting reaction products in smelt cyclone, discharging from smelt cyclone offgas including reaction products, supplying oxygen-containing gas into offgas duct upstream high temperature section combusting remaining offgas combustible materials while sufficiently hot for safe ignition and avoiding downstream burner-managed incineration.

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Patent Owner(s)

  • TATA STEEL NEDERLAND TECHNOLOGY B.V.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Meijer, Hendrikus Koenraad Albertus Bergen, NL 12 15

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