Vuletic Bogdan (Inventor), Wieder Kurt (Inventor), Wurm Johann (Inventor), Hauzenberger Franz (Inventor), Millner Robert (Inventor), Rein Norbert (Inventor), Schmidt Martin (Inventor), Leopold Schenk Johannes (Inventor)

Research output: Patent


The invention relates to a method for producing molten material, wherein oxygen, reducing agents and iron that has been reduced in a reduction reactor are introduced into a melter gasifier (3). The reducing agent is gasified with the oxygen and the heat thereby produced melts the reduced iron. The coupling gas from the melter gasifier (3) is used at least as a portion of the reduction gas. Reacted top gas is withdrawn from the reduction reactor (1). The aim of the invention is to increase energy efficiency and raw material efficiency. For this purpose, at least a portion of the thermal energy of the top gas and/or of the portion of the reduction gas used as the cooling gas and surplus gas is used for indirectly heating at least one additional gas that is used in the method. At least one heat exchanger (15, 18, 21) is arranged in a line (9 and/or 23) for the top gas and/or the portion of the reduction gas used as the cooling gas and surplus gas, at least one additional gas used in the method flowing through said heat exchanger (15, 18, 21).

Original languageEnglish
Patent numberMX2009003732
IPCC21B 13/ 00 A I
Priority date1/10/07
Publication statusPublished - 22 Apr 2009

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