Patents Assigned to Science and Technology Incorporated
  • Method of producing molten pig iron or molten steel pre-products and a plant therefor
    Patent number: 5567379
    Abstract: A plant is provided for producing molten pig iron or molten steel pre-products from lumpy, iron-ore-containing charging substances. The plant comprises a reduction shaft furnace for receiving lumpy, iron-ore-containing charging substances, the plant including a melter gasifier for receiving the reduction product formed in the reduction shaft furnace. The plant also includes a first charging device for at least one of iron ore and ore dust and a second charging device for solid carbon carriers, the melter gasifier being provided with a device for flow-connecting the first charging device for at least one of iron ore and ore dust and the second charging device for charging carbon carriers to at least one dust burner.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: October 22, 1996
    Assignees: Voest-Alpine Industrieanlagenbau GmbH, Pohang Iron & Steel Co., Ltd., Research Institute of Industrial Science & Technology, Incorporated Foundation
    Inventors: Leopold W. Kepplinger, Panajiotis Matzawrakos, Johannes Schenk, Dieter Siuka
  • Plant for producing molten pig iron or molten steel pre-products
    Patent number: 5535991
    Abstract: 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a CO and H.sub.2 -containing reducing gas is produced, which is injected into the reduction zone, is reacted there, is withdrawn as an export gas and is supplied to a consumer, is to be improved with a view to rendering feasible the use of fine ore in an economic manner.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: July 16, 1996
    Assignees: Voest-Alpine Industrieanlagenbau GmbH, Research Institute of Industrial Science & Technology, Incorporated Foundation
    Inventors: Werner Kepplinger, Panajiotis Matzawrakos, Johannes Schenk, Dieter Siuka, Christian Bohm
  • Process for producing molten pig iron or molten steel pre-products
    Patent number: 5534046
    Abstract: 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.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: July 9, 1996
    Assignees: Voest-Alpine Industrieanlagenbau GmbH, Research Institute of Industrial Science & Technology, Incorporated Foundation
    Inventors: Werner Kepplinger, Panajiotis Matzawrakos, Johannes Schenk, Dieter Siuka, Christian Bohm
  • Rotary shelf
    Patent number: 4781299
    Abstract: This invention is a rotary shelf in which a shelf can rotate centering around a shaft which is put into one of two stationary holes opened at a face to be set through a square bottom face of a shelf.
    Type: Grant
    Filed: September 9, 1987
    Date of Patent: November 1, 1988
    Assignee: Science and Technology Incorporated
    Inventor: Nobuo Oyama