Research Institute of Industrial Science & Technology

Voest-alpine Industrieanlagenbau Gmbh

Pohang Iron & Steel Co. Ltd.

Deutsche Voest-alpine Industrieanlagenbau Gmbh

Christian Bohm

Johannes Leopold Schenk

Werner Leopold Kepplinger

Dieter Siuka

Panajiotis Matzawrakos

Leopold Werner Kepplinger

Felix Wallner

A process for producing molten pig iron or molten steel pre-products from charging substances formed of iron ores and fluxes and at least partially comprising fines, wherein the charging substances are directly reduced to sponge iron in at least one reduction zone by the fluidized layer process, the sponge iron is melted in a melting-gasifying zone under supply of carbon carriers and oxygen-containing gas, and a CO and H.sub.2 -containing reducing gas is produced, which is injected into the reduction zone, is reacted there, is withdrawn as an export gas and is supplied to a consumer, is to be improved with a view to rendering feasible the use of fine ore in an economic manner. This is effected in that

Process for producing molten pig iron or molten steel pre-products

Plant for producing molten pig iron or molten steel pre-products

A conveying arrangement for the dosed conveyance of bulk material from one metallurgical vessel into another through a conveying channel. The conveying channel has an entry opening and a discharge opening. A conveyor worm is rotatably located in the conveying channel, extending at least from the entry opening to the discharge opening and including a first flight formed by a plurality of paddles. In order to be able to configure the conveyor worm as short as possible and to minimize gas streaming through the conveying channel, the conveyor worm, on its end associated with the discharge opening, has a second flight that is formed by a continuous helix extending at least over half a convolution.

Conveying arrangement for the dosed conveyance of bulk material

Growing community of inventors

Wels, Austria

Christian Bohm