Primetals Technologies Austria Gmbh

Siemens Vai Metals Technologies Gmbh

Thomas Eder

Robert Millner

Norbert Rein

Jan-Friedemann Plaul

Karl Zehetbauer

Andreas Scherney

Johann Wurm

Kurt Wieder

Georg Aichinger

Johannes Leopold Schenk

Martin Schmidt

Hado Heckmann

Franz Berner

Jan Friedemann Plaul

Jan-Freidemann Plaul

Daelyul Kwon

Gi Woong Kwon

A method for direct reduction of metal oxide-containing starting materials to produce metallized material by contact with hot reduction gas in a reduction unit (), wherein the product of the direct reduction is discharged from the reduction unit () by means of a product discharge device () which is flushed with seal gas and from which vent gas is drawn and subsequently de-dusted. The vent gas is de-dusted dry and the content of at least one gaseous constituent is reduced by catalytic conversion or combustion. Also, a device for carrying out the method is disclosed.

Method and device for direct reduction with dry vent gas de-dusting

A melter gasifier of a smelting reduction installation is charged by bringing together coal -containing material in lump form and iron carrier material (which may be hot) before and/or while they enter the melter gasifier. The ratio of the combined amounts of iron carrier material and coal-containing material in lump form is variable. The combined amounts of iron carrier material and coal-containing material in lump form are distributed over the cross section of the melter gasifier by a dynamic distributing device, and the ratio of the combined amounts of the iron carrier material and coal-containing material in lump form is set depending on the position of the dynamic distributing device.

Method and device for charging coal-containing material and iron carrier material

A method is provided for producing pressed articles which contain direct-reduced, fine particulate iron (direct reduced iron, DRI) from a fluidized bed reduction system for direct reduction of fine particulate iron ore, wherein direct-reduced, fine particulate iron produced in the fluidized bed reduction system during direct reduction is compacted into pressed articles. Dry, fine particulate material containing at least fine particulate iron ore and optionally fine particulate iron and carbon is admixed to the direct-reduced fine particulate iron and the mixture thus obtained is subsequently compacted into pressed articles. An apparatus for carrying out such method is also provided.

Process and apparatus for producing pressed articles

A process and a device for charging a primary product for pig iron into a smelting unit are provided. According to the process and device, some of the primary product that has been formed by reducing oxidic iron carriers is stored in the hot state in a reservoir tank before being supplied into the storage device or charging device that is directly connected to the smelting unit.

Process and device for charging into a smelting unit

A process and an apparatus for producing liquid pig iron or liquid primary steel products from charge materials formed by iron ores and additions. The charge materials are subjected to a further reduction in a reducing zone () and are then fed to a smelting zone or a smelting unit (), in particular a fusion gasifier, for smelting with the addition of carbon carriers and oxygen-containing gas to form a fixed bed. A CO- and H-containing reduction gas is formed, which gas is introduced into the reducing zone converted there and drawn off as top gas. The hot top gas, laden with solid matter, after separation of the solids, is subjected at least to a dry coarse separation and at least parts of the hot solids segregated by the separation are returned into the smelting zone or the smelting unit () or the reducing unit (). In addition, the top gas is treated in a further fine separation stage (A).

Process and apparatus for producing liquid pig iron or liquid primary steel products

A process and an apparatus for reducing charge materials containing iron ore or for producing pig iron or liquid primary steel products in a smelting unit are provided, the charge materials being at least partially reduced in at least one reduction unit by means of a reducing gas and optionally at least some of the at least partially reduced charge materials being melted in a smelting unit while supplying coal or coke and gas containing oxygen, while simultaneously forming the reducing gas, and the reducing gas or a reducing gas generated externally being supplied to the reduction unit. In the event of an interruption in the production of pig iron or primary steel products, the at least one reduction unit is emptied and the at least partially reduced charge materials are introduced into at least one vessel and kept under a non-oxidizing shielding gas atmosphere.

Process and apparatus for reducing charge materials containing iron ore or for producing pig iron or liquid primary steel products

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Traun, Austria

Thomas Eder