Techint Compagnia Tecnica Internazionale S.p.a.

Techint Compagnia Tenica Internazionale S.p.a.

Francesco Memoli

Mauro Bianchi Ferri

Osvaldo Brioni

Enrico Malfa

Marcello Pozzi

Volkwin Werner Koster

A method for the recovery of refractory debris materials and ladle slags as process slags in the iron metallurgy production in EAFs and the related metering to the furnace for the formation of the process slag comprises the following steps: grinding and screening of the refractory debris materials until powders of controlled granulometry are obtained, storage of the powders in storage sites, injection of the powders into an EAF furnace by means of automatic metering of the various components.

Method and apparatus for the recovery of refractory debris materials and ladle slags as process slags in iron metallurgy production in EAFs, and the related metering to the furnace for the formation of the process slag

A Method for the recovery of the secondary metallurgy (LF) slag from a plant for the production of steel, the method comprising a cooling step of the slag, by means of the passage of air and/or other gas, a breakdown step, a step of extracting the powder, wherein the breakdown step is accelerated by means of forced convection of a cooling fluid and/or another reaction, gas and by means of moving the slag mass by overturning and vibrating support gratings. The overturning and vibrating support gratings are provided inside closed metallic boxes which are connected in series and closed with movable containment partitions to form a treatment module. The breakdown, step is accelerated by means of overturning the slag mass from the support grating of one metallic box to the support grating of an adjoining box.

Method and apparatus for the recovery of the secondary metallurgy (LF) slag and its recycling in the steel production process by means of electric furnace

A multifunction injector () comprising a De Laval nozzle () adapted to act as a burner at subsonic or supersonic speed, combined with a plurality of nozzles () for fuel and comburant respectively, arranged in two rings, concentric and co-axial to said De Laval nozzle () and externally protected by a specifically shaped protection cavity ().

Multifunction injector and relative combustion process for metallurgical treatment in an electric arc furnace

A device () for continuous measurement of the temperature of molten metal in a furnace or recipient for its production and treatment comprises a heat analysis instrument () placed in a lance () which blows inert gas and/or high-pressure compressed air against a surface of metal slag () of a furnace or recipient ().

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Milan, Italy

Francesco Memoli