Patents by Inventor Norbert Rein
Norbert Rein 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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Publication number: 20240052442Abstract: A process for steel production that includes: production of sponge iron from iron oxide-containing starting material by direct reduction with reduction gas, wherein the reduction gas has at least 20% by volume of hydrogen H2, and production of an iron melt having a carbon content of 1-5% by mass from the sponge iron. Sponge iron is subjected to a treatment that includes: energy input and addition of additives to produce a melt and a slag, wherein the energy input is effected substantially from electricity and wherein the slag has a basicity B2 of less than 1.3, preferably less than 1.25, particularly preferably less than 1.2, adjustment of the carbon content in the melt, reduction of at least a sub-amount of the iron oxides present in the sponge iron The slag is separated during and/or after the treatment.Type: ApplicationFiled: October 28, 2021Publication date: February 15, 2024Inventors: Robert MILLNER, Norbert REIN, Johann WURM
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Patent number: 11685961Abstract: The invention relates to a method for the direct reduction of oxidic iron carrier particles to a reduction product in a fluidized bed through which a reduction gas containing 30-100 mol % hydrogen H2 flows in crossflow. At least 90% by mass of oxidic iron carrier particles introduced into the fluidized bed have a particle size of less than or equal to 200 micrometers. The superficial velocity U of the reduction gas flowing through the fluidized bed is set between 0.05 m/s and 1 m/s such that, for the particle size d equal to d30 of the oxidic iron carrier particles introduced into the fluidized bed, it is above the theoretical suspension velocity Ut and is less than or equal to Umax.Type: GrantFiled: March 12, 2020Date of Patent: June 27, 2023Assignee: Primetals Technologies Austria GmbHInventors: Roland Eisl, Bernhard Hiebl, Hanspeter Ofner, Norbert Rein, Johann Wurm
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Publication number: 20220145412Abstract: The invention relates to a method for the direct reduction of oxidic iron carrier particles to a reduction product in a fluidized bed through which a reduction gas containing 30-100 mol % hydrogen H2 flows in crossflow. At least 90% by mass of oxidic iron carrier particles introduced into the fluidized bed have a particle size of less than or equal to 200 micrometers. The superficial velocity U of the reduction gas flowing through the fluidized bed is set between 0.05 m/s and 1 m/s such that, for the particle size d equal to d30 of the oxidic iron carrier particles introduced into the fluidized bed, it is above the theoretical suspension velocity Ut and is less than or equal to Umax.Type: ApplicationFiled: March 12, 2020Publication date: May 12, 2022Applicant: Primetals Technologies Austria GmbHInventors: Roland Eisl, Bernhard Hiebl, Hanspeter Ofner, Norbert Rein, Johann Wurm
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Publication number: 20220074006Abstract: Process for the direct reduction of metal oxides (2) using a reduction gas, which is based on at least one precursor gas, wherein at least one precursor gas (15, 22) is based on reformer gas obtained by catalytic reforming of hydrocarbon-containing gas (4) in a reformer (3), and in the preparation of the reduction gas at least one precursor gas based on reformer gas is heated up by means of electrical energy.Type: ApplicationFiled: December 16, 2019Publication date: March 10, 2022Inventors: Franz HAUZENBERGER, Robert MILLNER, Hanspeter OFNER, Norbert REIN, Gerald ROSENFELLNER, Johann WURM
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Patent number: 10557179Abstract: Provided is a method for manufacturing reduced iron which includes the steps of: i) drying ores in an ore drier; ii) supplying the dried ores to at least one reduction reactor; iii) reducing the ores in the at least one reduction reactor and manufacturing reduced iron; iv) discharging exhaust gas by which the ores are reduced in the reduction reactor; v) branching the exhaust gas and providing the branched exhaust gas as ore feeding gas; and vi) exchanging heat between the exhaust gas and the ore feeding gas and transferring the sensible heat of the exhaust gas to the ore feeding gas. In the supplying the dried ores to the at least one reduction reactor, the dried ores are supplied to the at least one reduction reactor by using the ore feeding gas.Type: GrantFiled: September 11, 2017Date of Patent: February 11, 2020Assignees: POSCO, Primetals Technologies Austria GmbHInventors: Myoung-Kyun Shin, Dong-Won Kim, Sang-Hyun Kim, Jun-Hyuk Lee, Jan Friedemann Plaul, Norbert Rein, Karl Zehetbauer
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Patent number: 10337076Abstract: A method for reducing metal oxide containing charge materials (1): reducing the metal oxide containing charge materials (1) in at least two fluidized bed units (RA,RE) by means of a reduction gas (2), wherein at least some of the resulting off-gas (3) is recycled and wherein the metal oxide containing charge materials (1) are conveyed into the fluidized bed unit RE by a propellant gas. Also, apparatus for carrying out the method according to the invention is disclosed.Type: GrantFiled: January 27, 2015Date of Patent: July 2, 2019Assignee: PRIMETALS TECHNOLOGIES AUSTRIA GMBHInventors: Robert Millner, Jan-Friedemann Plaul, Norbert Rein
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Publication number: 20180363075Abstract: A method for producing liquid pig iron (1), includes reducing iron-oxide-containing feed materials (2) to form a partially reduced first iron product (3) in a first reduction system (4), introducing the partially reduced first iron product (3), a first oxygen-containing gas (9, 9a), and a first carbon carrier (10) into a melter gasifier (11), introducing a second gaseous and/or liquid carbon carrier (13) and a second oxygen-containing gas (9b) into a mixing region (18) within the melter gasifier (11) above the fixed bed of the melter gasifier, mixing the second gaseous and/or liquid carbon carrier (13) with the second oxygen-containing gas (9b) in the mixing region (18), wherein the combustion air ratio is set in the range of 0.2 to 0.4, preferably between 0.3 and 0.Type: ApplicationFiled: April 26, 2017Publication date: December 20, 2018Inventors: Franz HOLZLEITHNER, Robert MILLNER, Wolfgang PANHUBER, Norbert REIN, Gerald ROSENFELLNER, Johann WURM
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Patent number: 9512496Abstract: A method for introducing fine particulate material (4) of ferruginous particles into a fluidized bed reduction unit (1) having a fluidized bed (24), wherein the temperature in the fluidized bed (24) is more than 300° C., and wherein the fine particulate material (4) is introduced directly into the fluidized bed (24) and/or into a free space (25) above the fluidized bed (24) by means of a burner (2). The method may be used for producing liquid pig iron (17) or liquid steel precursor products (18) by a smelting reduction process in a smelting reduction unit (22).Type: GrantFiled: April 4, 2013Date of Patent: December 6, 2016Assignee: PRIMETALS TECHNOLOGIES AUSTRIA GMBHInventors: Franz Hauzenberger, Robert Millner, Jan-Friedemann Plaul, Norbert Rein
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Publication number: 20160348199Abstract: A method for reducing metal oxide containing charge materials (1): reducing the metal oxide containing charge materials (1) in at least two fluidized bed units (RA,RE) by means of a reduction gas (2), wherein at least some of the resulting off-gas (3) is recycled and wherein the metal oxide containing charge materials (1) are conveyed into the fluidized bed unit RE by a propellant gas. Also, apparatus for carrying out the method according to the invention is disclosed.Type: ApplicationFiled: January 27, 2015Publication date: December 1, 2016Inventors: Robert MILLNER, Jan-Friedemann PLAUL, Norbert REIN
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Patent number: 9470456Abstract: 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.Type: GrantFiled: May 9, 2012Date of Patent: October 18, 2016Assignee: PRIMETALS TECHNOLOGIES AUSTRIA GmbHInventors: Georg Aichinger, Franz Berner, Thomas Eder, Robert Millner, Jan-Friedemann Plaul, Norbert Rein, Andreas Scherney, Kurt Wieder, Johann Wurm
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Patent number: 9400139Abstract: A device for closed-loop control of process gases (11) in a plant (8) for producing directly reduced metal ores includes at least one reduction unit (10), an appliance upstream of the reduction unit (10) for separating gas mixtures (18), a gas purification appliance (13) connected downstream of the reduction unit (10) for rate control of process gases (11). Process gases (11) are obtained by recycling from the production process itself and from a plant for pig iron generation (1) via a supply conduit (16). An open-loop pressure control appliance (15) upstream of a junction of the supply conduit (16) into a return conduit (14) for the process gases (11) such that a pressure level for the appliance for separating gas mixtures (18) is kept constant and the process gases (9,11) are controlled in a closed-loop manner in a plant for producing directly reduced metal ores (8).Type: GrantFiled: June 1, 2012Date of Patent: July 26, 2016Assignee: PRIMETALS TECHNOLOGIES AUSTRIA GMBHInventors: Robert Millner, Jan-Friedemann Plaul, Norbert Rein, Gerald Rosenfellner
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Patent number: 9382594Abstract: 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.Type: GrantFiled: February 18, 2011Date of Patent: July 5, 2016Assignee: PRIMETALS TECHNOLOGIES AUSTRIA GMBHInventors: Thomas Eder, Robert Millner, Jan-Friedemann Plaul, Norbert Rein
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Patent number: 9365906Abstract: 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.Type: GrantFiled: March 6, 2014Date of Patent: June 14, 2016Assignee: PRIMETALS TECHNOLOGIES AUSTRIA GMBHInventors: Thomas Eder, Robert Millner, Jan Friedemann Plaul, Norbert Rein, Andreas Scherney, Karl Zehetbauer
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Publication number: 20150135899Abstract: A method for introducing fine particulate material (4) of ferruginous particles into a fluidized bed reduction unit (1) having a fluidized bed (24), wherein the temperature in the fluidized bed (24) is more than 300° C., and wherein the fine particulate material (4) is introduced directly into the fluidized bed (24) and/or into a free space (25) above the fluidized bed (24) by means of a burner (2). The method may be used for producing liquid pig iron (17) or liquid steel precursor products (18) by a smelting reduction process in a smelting reduction unit (22).Type: ApplicationFiled: April 4, 2013Publication date: May 21, 2015Inventors: Franz Hauzenberger, Robert Millner, Jan-Friedemann Plaul, Norbert Rein
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Patent number: 8945273Abstract: 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.Type: GrantFiled: December 1, 2010Date of Patent: February 3, 2015Assignee: Siemens Vai Metals Technologies GmbHInventors: Thomas Eder, Robert Millner, Jan-Friedemann Plaul, Norbert Rein, Karl Zehetbauer
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Publication number: 20140196571Abstract: 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.Type: ApplicationFiled: March 6, 2014Publication date: July 17, 2014Applicant: SIEMENS VAI METALS TECHNOLOGIES GMBHInventors: Thomas EDER, Robert MILLNER, Jan FRIEDEMANN PLAUL, Norbert REIN, Andreas SCHERNEY, Karl ZEHETBAUER
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Publication number: 20140138884Abstract: A device for closed-loop control of process gases (11) in a plant (8) for producing directly reduced metal ores includes at least one reduction unit (10), an appliance upstream of the reduction unit (10) for separating gas mixtures (18), a gas purification appliance (13) connected downstream of the reduction unit (10) for rate control of process gases (11). Process gases (11) are obtained by recycling from the production process itself and from a plant for pig iron generation (1) via a supply conduit (16). An open-loop pressure control appliance (15) upstream of a junction of the supply conduit (16) into a return conduit (14) for the process gases (11) such that a pressure level for the appliance for separating gas mixtures (18) is kept constant and the process gases (9,11) are controlled in a closed-loop manner in a plant for producing directly reduced metal ores (8).Type: ApplicationFiled: June 1, 2012Publication date: May 22, 2014Inventors: Robert Millner, Jan-Friedemann Plaul, Norbert Rein, Gerald Rosenfellner
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Patent number: 8728384Abstract: 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.Type: GrantFiled: October 6, 2010Date of Patent: May 20, 2014Assignee: Siemens Vai Metals Technologies GmbHInventors: Thomas Eder, Robert Millner, Jan-Freidemann Plaul, Norbert Rein, Andreas Scherney, Karl Zehetbauer
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Publication number: 20140110891Abstract: 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.Type: ApplicationFiled: May 9, 2012Publication date: April 24, 2014Applicant: SIEMENS VAI METALS TECHNOLOGIES GmbHInventors: Georg Aichinger, Franz Berner, Thomas Eder, Robert Millner, Jan-Friedemann Plaul, Norbert Rein, Andreas Scherney, Kurt Wieder, Johann Wurm
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Patent number: 8597400Abstract: In a method and an apparatus for separating at least one gaseous component from a waste gas of an installation for producing liquid pig iron, liquid primary steel products or sponge iron, in a first step, a stream of the waste gas passes through at least one adsorption separator at a first pressure, whereby the gaseous component is largely separated from the waste gas and, in a second step, the gaseous component is largely removed from the adsorption separator at a second pressure, which is lower than the first pressure. The method and apparatus are maintenance-free, cause low investment and energy costs and has a lower space requirement by a method in which the second pressure or the desorption pressure is generated by at least one jet pump, which is fed a stream of a propellant gas at a third pressure, which is higher than the second pressure.Type: GrantFiled: January 18, 2010Date of Patent: December 3, 2013Assignee: Siemens Vai Metals Technologies GmbHInventors: Robert Millner, Norbert Rein, Gerald Rosenfellner