Siemens Vai Metals Technologies Gmbh

Deutsche Voest-alpine Industrieanlagenbau Gmbh

Voest-alpine Industrieanlagenbau Gmbh

Josef Stockinger

Johannes Leopold Schenk

Johann Wurm

Michael Nagl

Franz Hauzenberger

Martin Schmidt

Leopold Werner Kepplinger

Kurt Wieder

Hado Heckmann

Herbert Mizelli

Parviz Zahedi

The invention relates to an apparatus for producing metals and/or primary metal products, in particular pig iron and/or primary pig iron products, in which a metal-containing charge material, in particular in fine particle form, is introduced, using pneumatic conveying, by means of a carrier gas stream, in the form of a stream of medium formed from the charge material and the carrier gas stream, into a melting unit, in particular a melter gasifier, for further processing. According to the invention, the charge material is introduced after the carrier gas stream has been separated off and separately at at least two introduction points, so that at least two partial quantities of the charge material can be introduced independently of one another and continuously or in stacked form.

Process and apparatus for producing metals and/or primary metal products

The invention relates to a process and an associated apparatus for producing metals and/or primary metal products, in particular pig iron and/or primary pig iron products, in which a metal-containing charge material, in particular in fine particle form, is introduced, using pneumatic conveying, by means of a carrier gas stream, in the form of a stream of medium formed from the charge material and the carrier gas stream, into a melting unit, in particular a melter gasifier, for further processing. According to the invention, the charge material is introduced after the carrier gas stream has been separated off and separately at at least two introduction points, so that at least two partial quantities of the charge material can be introduced independently of one another and continuously or in stacked form.

Process and apparatus for producing liquid pig iron or primary steel products from iron-containing material in lump form in a fusion gasifier ( ), in which, with lump coal and oxygen-containing gas being fed in, and with simultaneous formation of a reduction gas, the iron-containing material is fused, lump coal being fed to the fusion gasifier ( ) from above and, together with the iron-containing material, forming a fixed bed ( ) in the fusion gasifier ( ) and thereby giving off its fraction of volatile hydrocarbons into the dome space ( ) located above the fixed bed ( ), and pulverized-fuel burners ( ) being directed obliquely from above towards the surface of the fixed bed ( ). The operation of the pulverized-fuel burners ( ) is in this case controlled in such a way that the combustion of the carbon fraction of the carbon carriers in fine particle form takes place in a proportion of at least 40% to form CO .

Method for producing liquid pig iron

According to a process for producing pig iron (,) from fine-particulate iron oxide carriers and lumpy iron-containing material in a meltdown gasifying zone (,) of a melter gasifier (,), the iron-containing material is melted in a bed (,) formed of solid carbon carriers, under the supply of carbon-containing material and oxygen-containing gas while simultaneously forming a reducing gas. Fine-particulate iron-oxide carriers, such as iron-containing fine ore and ore dust and oxidic iron fine dust, are introduced into a reducing gas stream leaving the melter gasifier (,), and the reducing gas is separated from the fine-particulate material formed thereby. The separated fine-particulate material is introduced into the meltdown gasifying zone (,) via a dust recirculation line (,) and through a dust burner (,), and the reducing gas is used for reducing iron-oxide-containing material. To be able to charge large amounts of fine ore or ore dust in this process, the separated fine-particulate material in the dust recirculation line (,to,) is conveyed via a fluidized bed sluice (,) formed by the separated fine-particulate material and by reducing gas to the dust burner (,) and reduced thereby (FIG.,).

Method for producing liquid pig iron or steel fabricated materials and installation for implementing said method

Process for recycling fine-particle solids discharged from a reactor vessel with a gas

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Luftenberg, Austria

Josef Stockinger