Klockner-werke Ag

Hans Gunther Geck

Hans Jurgen Langhammer

Jurgen Langhammer

Fritz Kruse

A charge of iron-containing metallic substance is melted in a melting vessel, and the molten metallic substance is passed through a body of carbonaceous material contained in a treating container for the metallic substance to be enriched with carbon. The treating container is gas-tightly sealed except for its communication with the melting vessel. At least oxygen is admitted into the treating container to partly and gradually burn the carbonaceous material and thus to heat the metallic substance passing through the body. The body may contain alloying elements and/or slag-forming constituents. The enriched molten metallic substance and slag which form a bath at the bottom of the treating container are discharged therefrom through respective discharging outlets which are provided with traps. The gases which are liberated during the passage of the molten metallic substance through the body of carbonaceous material are utilized for heating either the body or the charge of metallic substance in the melting vessel.

Method of producing cast iron

A charge consisting of scrap, sponge iron, pellets and the like is admitted into a vertically arranged melting chamber so as to form a column therein. A burner lance generates a flame which melts the column from below so as to produce a melt and an FeO slag. A transportable and tiltable vessel is provided beneath the melting chamber and contains a quantity of pig iron. The melting chamber has an opening at the bottom thereof through which the melt and the slag flow into the vessel to form a mixture containing between 30 and 60 percent by weight of pig iron. Alloying elements and cooling agents are added to the mixture and the resulting molten mass is then at least partially refined in the vessel by blowing with oxygen. During the blowing operation, reaction of the slag and the pig iron occurs and a pourable steel having a desired composition is thereby obtained. The melting of the charge in the melting chamber is carried out without regard to the extent of reaction of the slag and of the pig iron which is required to produce steel of the desired composition.

Process for producing steel

Particulate material such as iron scrap is melted down into a melt which is received in a melt retaining zone. During the reception of the melt in this zone, liquid iron of the melt is contacted with an elongated upright body of carbon soluble in the liquid iron, or with a lining of such carbon adherent to the bottom of the melt retaining zone, below any slag which floats on the liquid iron of the melt. The liquidus point of the melt is lowered by the resulting carburization of the iron, thereby facilitating the retention of the liquid iron in the melt retaining zone.

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Hagen, Germany

Hans Gunther Geck