MINITEC Energy Optimizing Furnace (EOF)

3D model of latest Energy Optimizing Furnace (EOF) designed by MINITEC for liquid steel production.

The EOF - “Energy Optimizing Furnace” - is a melting/refining oxygen based process for the production of liquid steel, starting from hot metal, with the addiction of up to 40% scrap, preheated in the process.

The EOF works with combined oxygen blow (submerged and supersonic oxygen), in an initial charge containing hot metal, scrap and fluxes for slag formation. Oxygen from submerged tuyeres reacts with the carbon from hot metal, generating CO bubbles. These bubbles travel through the liquid bath to the furnace atmosphere, where CO can or not be burnt to CO2 by the oxygen contained in the false air. Such CO bubbling generates an intense stirring and splashing that strongly increases the bath surface exposed to oxygen, allowing the transfer of an appreciable amount of heat to the bath and accelerating carbon oxidation.

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