Voest-alpine Industrieanlagenbau Gmbh

Alfred Weber

Wilfried Pirklbauer

Johannes Steins

Johann Auer

Harald Berger

Peter Mittag

Heinrich Auberger

Peter Wimmer

Scrap-melting electric arc furnace

A plant for the production of molten metals, includes a melting vessel and a metallurgical vessel receiving the melt from the melting vessel for aftertreating the melt and closed by a lid. The melting vessel has a tap opening for the melt provided on the bottom level of the melting vessel and located on the periphery of the melting vessel. The tap opening is positioned above a pour-in opening of the metallurgical vessel. In order to ensure a continuous melting procedure, the pour-in opening of the metallurgical vessel following the melting vessel is provided above a melt guiding chute arranged within the metallurgical vessel.

Plant for the production of molten metals and method

A plant for the production of molten metals includes a melting vessel in whose wall burners and optionally oxygen-containing-gas feeding ducts are installed and on whose upper end a charging device as well as a gas evacuation duct receiving the offgases forming enter. In order to enable the continuous charging of the melting vessel by avoiding any unintentional escape of gas from the melting vessel, both the gas evacuation duct and the charging means run into the upper end of the furnace shaft laterally and approximately diametrically opposite each other. The charging means projects into a charging opening brushed over by a gas curtain and an intake chute for charging material is provided below the charging opening in a manner directed towards the center of the furnace shaft. The intake chute forms a projection protruding inwardly like a nose relative to the wall of the furnace shaft and followed by a wall section inclined relative to the lower end region of the furnace shaft and passing over into the wall of the furnace shaft.

Plant for the production of molten metals

There is disclosed a process for the production of molten steel or steel pre-products from scrap contaminated with combustible waste-like substances and heated and melted in a metallurgical meltdown vessel. In order to be able to dispose of the forming noxious substances at low costs and to keep the offgases free of impurities detrimental to the environment, the gas forming during charging of scrap into the metallurgical vessel and during heating and melting of the scrap, after conditioning to a temperature range of between 1000.degree. and 1500.degree. C., is used as a heating gas in a lime-burning process including a moving lime fixed-bed under release of its sensible heat. Sulfur- and chlorine-containing components of the heating gas are absorbed on the burnt lime and the dust contained in the heating gas is separated in the lime fixed-bed. The heating gas, which is purified and cooled at its passage through the lime fixed-bed, subsequently is finally purified in a filtering plant.

Process and installation for producing molten steel of scrap

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Luftenberg, Austria

Alfred Weber