Patents by Inventor Udo Gennari
Udo Gennari has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7597736Abstract: In a process for utilizing slag containing oxidic iron particles, adding a reducing agent and reducing oxidic iron particles of the slag are charging the slag into a reactor vessel onto a residual iron metal containing dissolved carbon, slowly and continuously over an extended period of time, electric heating the slag and the iron melt over an extended period of time, injecting a carbon-containing reducing agent with inert gas over an extended period of time by a lance into a region close to the boundary surface between the slag and the iron melt or directly into the iron melt, dissolving the carbon of the reducing agent in the iron melt and reducing oxidic iron particles of the slag with metallic iron and CO being formed, over an extended period of time, forming a foamed slag by the resulting CO over an extended period of time, introducing an oxygen-containing gas or oxygen into the foamed slag and postcombustion of CO to CO2 over an extended period of time, bottom flushing the reactor vessel with inert gasType: GrantFiled: November 16, 2005Date of Patent: October 6, 2009Assignee: Siemens Vai Metals Technologies GmbH & CoInventors: Alexander Fleischanderl, Udo Gennari
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Publication number: 20060065071Abstract: In a process for utilizing slag containing oxidic iron particles, adding a reducing agent and reducing oxidic iron particles of the slag are charging the slag into a reactor vessel onto a residual iron metal containing dissolved carbon, slowly and continuously over an extended period of time, electric heating the slag and the iron melt over an extended period of time, injecting a carbon-containing reducing agent with inert gas over an extended period of time by a lance into a region close to the boundary surface between the slag and the iron melt or directly into the iron melt, dissolving the carbon of the reducing agent in the iron melt and reducing oxidic iron particles of the slag with metallic iron and CO being formed, over an extended period of time, forming a foamed slag by the resulting CO over an extended period of time, introducing an oxygen-containing gas or oxygen into the foamed slag and postcombustion of CO to CO2 over an extended period of time, bottom flushing the reactor vessel with inert gasType: ApplicationFiled: November 16, 2005Publication date: March 30, 2006Inventors: Alexander Fleischanderl, Udo Gennari
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Patent number: 6491864Abstract: Plant for charging metal carriers which contain a portion of fines and are at least partially reduced to a melter gasifier in which a melt-down gasifying zone formed by a bed is maintained, the metal carriers and carbon carriers are fed into the melter gasifier above the level of the melt-down gasifying zone. The metal carriers descend to the melt-down gasifying zone and travel through the same forming a metal melt and producing a reducing gas by coal gasification.Type: GrantFiled: June 19, 2001Date of Patent: December 10, 2002Assignees: Voest-Alpine Industrieanlagenbau GmbH, Pohang Iron & Steel Co., Ltd., Research Institute of Industrial Science & Technology, Inc., FoundationInventors: Udo Gennari, Johannes-Leopold Schenk
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Publication number: 20010033045Abstract: In a method of charging metal carriers which contain a portion of fines and are at least partially reduced to a melter gasifier in which a melt-down gasifying zone formed by a bed is maintained, the metal carriers and carbon carriers are fed into the melter gasifier above the level of the melt-down gasifying zone. The metal carriers descend to the melt-down gasifying zone and travel through the same forming a metal melt and producing a reducing gas by coal gasification.Type: ApplicationFiled: June 19, 2001Publication date: October 25, 2001Applicant: Voest-Alpine Industrienalagenbau GmbHInventors: Udo Gennari, Johannes-Leopold Schenk
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Patent number: 6273933Abstract: According to a process for injecting metal-oxide-containing fine particles into a reducing gas, a central material stream formed by the fine particles and a carrier gas is introduced into the reducing gas and at least one gas stream formed by a secondary gas is directed against the material stream to ensure an optimum contact of the fine particles with the reducing gas, the gas stream atomizing the material stream and the fine particles being evenly distributed within the reducing gas.Type: GrantFiled: June 14, 1999Date of Patent: August 14, 2001Assignees: Voest - Alphini Industrieanlagenbau GmbH, Pohang Iron & Steel Co. LTD, Research Institute of Industrial Science & TechnologyInventors: Leopold Werner Kepplinger, Michael Nagl, Franz Hauzenberger, Bernhard Rinner, Felix Wallner, Peter Brandl, Udo Gennari, Johannes Schenk
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Patent number: 6258148Abstract: In a method of charging metal carriers which contain a portion of fines and are at least partially reduced to a melter gasifier in which a melt-down gasifying zone formed by a bed is maintained, the metal carriers and carbon carriers are fed into the melter gasifier above the level of the melt-down gasifying zone. The metal carriers descend to the melt-down gasifying zone and travel through the same forming a metal melt and producing a reducing gas by coal gasification.Type: GrantFiled: December 30, 1998Date of Patent: July 10, 2001Assignees: Voest-Alpine Industrieanlagenbau GmbH, Pohang Iron & Steel Co., Ltd., Research Institute of Industrial Science & Technology, Incorporated FoundationInventors: Udo Gennari, Johannes-Leopold Schenk
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Patent number: 6210627Abstract: An arrangement for the dosed introduction of fine-particulate material into a reactor vessel comprises a fluidized bed sluice, into which a material supply means enters from above and into which a gas duct feeding a fluidization gas runs in the lower end region thereof and which includes an overflow tube for conveying on the fine-particulate material. In order to introduce the fine-particulate material into the reactor vessel at specific zones, a plurality of independently connectable fluidized bed sluices are provided outside of the reactor vessel, the fluidized bed sluices having overflow tubes which project into the interior of the reactor vessel.Type: GrantFiled: April 7, 1999Date of Patent: April 3, 2001Assignees: Voest-Alpine Industrieanlagenbau GmbH, Pohang Iron & Steel Co., Ltd., Research Institute of Industrial Science & Technology, Incorporated FoundationInventors: Udo Gennari, Leopold Werner Kepplinger, Felix Wallner
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Patent number: 6149708Abstract: A process for producing sponge iron by directly reducing particulate, iron-oxide-containing material, wherein reducing gas that is formed from carbon carriers and an oxygen-containing gas in a melt-down gasifying zone is introduced into a reduction zone that contains the iron-oxide-containing material, characterized by the combination of the following characteristic features: (i) to the reduction zone, a reducing gas is fed which contains between iron-oxide-containing material 20 g and 100 g per Nm.sup.3 of a dust having a carbon content of between 30 mass % and 70 mass %; and (ii) the iron-oxide-containing material is exposed to the reducing gas for a time period that exceeds the period for a complete reduction. The process of the invention renders it possible to produce a sponge iron of elevated carbon content.Type: GrantFiled: August 4, 1998Date of Patent: November 21, 2000Assignee: Voest-Alpine Industrieanlagenbau GmbHInventors: Werner Leopold Kepplinger, Felix Wallner, Udo Gennari
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Patent number: 6030432Abstract: In a process for the reduction of fine ore by reducing gas in the fluidized bed method, the following characteristic features are realized in order to achieve a uniform and even degree of metallization at optimum utilization of the reducing gas and while minimizing the amount of reducing gas employed, that the fine ore is fractionated by aid of the reducing gas into at least two fractions having different grain size distributions, that each fraction is reduced by the reducing gas in a separate fluidized bed, wherein the reducing gas maintains a first fluidized bed containing the coarse-grain fraction and separates the fine-grain fraction from the same, is accelerated together with the fine-grain fraction, subsequently under pressure release forms a further fluidized bed, into which it is continuously injected in a radially symmetrical manner and from below, and wherein, furthermore, secondary reducing gas additionally is directly injected into the further fluidized bed in a radially symmetrical manner, and thType: GrantFiled: November 17, 1997Date of Patent: February 29, 2000Assignees: Voest-Alpine Industrieanlagenbau GmbH, Pohang Iron & Steel Co., Ltd., Research Institute of Industrial Science & Technology Incorporated FoundationInventors: Werner Leopold Kepplinger, Felix Wallner, Johannes-Leopold Schnek, Udo Gennari, Il-Ock Lee, Yong-Ha Kim, Gyu-Dae Park
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Patent number: 5049355Abstract: Process for producing a ductile, high strength, oxide dispersion hardened sintered alloy based on a metal having a high melting point. In the past, oxide dispersion has played only a minor role in comparison with other known processes for increasing strength. The process disclosed permits cost effective production of metallic materials which possess a strength hitherto unattainable by oxide dispersion and a higher ductility than prior art materials. As a result, the metallic and nonmetallic foreign components in the sintered alloy can be restricted to the relatively small quantities of dispersoids and any dissolved residual oxygen. The process consists in an annealing treatment and calls for a specific choice of basis metal and suitable oxide dispersoid.Type: GrantFiled: January 8, 1990Date of Patent: September 17, 1991Assignee: Schwarzkopf Development CorporationInventors: Udo Gennari, Wolfgang Glatzle