公开(公告)号：US12209293B2

公开(公告)日：2025-01-28

申请号：US17414368

申请日：2019-12-16

Applicant: Primetals Technologies Austria GmbH

Inventor： Franz Hauzenberger ,  Robert Millner ,  Hanspeter Ofner ,  Norbert Rein ,  Gerald Rosenfellner ,  Johann Wurm

IPC: C21B13/00 ,  C21B13/12

Abstract: A method of direct reduction of metal oxides that includes catalytic reforming of hydrocarbonaceous gas in a reformer to obtain reformer gas, obtaining at least one precursor gas based on the reformer gas, preparing a reduction gas by heating the at least one precursor gas by means of electrical energy, at least a portion of the electrical energy being introduced by means of plasma.

公开(公告)号：US09512496B2

公开(公告)日：2016-12-06

申请号：US14401461

申请日：2013-04-04

Applicant: PRIMETALS TECHNOLOGIES AUSTRIA GMBH

Inventor： Franz Hauzenberger ,  Robert Millner ,  Jan-Friedemann Plaul ,  Norbert Rein

IPC: C22B1/14 ,  C21B13/00 ,  C21B7/00 ,  C21B7/22 ,  C21B13/02 ,  C21B13/14 ,  F27B15/14 ,  F27B15/18 ,  F27D1/18 ,  F27D3/18 ,  C21B11/00

CPC classification number: C21B13/0033 ,  C21B7/002 ,  C21B7/22 ,  C21B11/00 ,  C21B13/0013 ,  C21B13/0026 ,  C21B13/023 ,  C21B13/14 ,  C21B13/143 ,  C21B2100/282 ,  C22B1/14 ,  F27B15/14 ,  F27B15/18 ,  F27D1/18 ,  F27D3/18 ,  Y02P10/122 ,  Y02P10/126 ,  Y02P10/128 ,  Y02P10/136 ,  Y02P10/143

Abstract: 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).

Abstract translation: 一种用于将细小颗粒材料（4）引入具有流化床（24）的流化床还原单元（1）中的方法，其中流化床（24）中的温度大于300℃，其中 细颗粒材料（4）通过燃烧器（2）直接引入流化床（24）和/或流化床（24）上方的自由空间（25）中。 该方法可以通过冶炼还原单元（22）中的熔融还原方法用于生产液体生铁（17）或液态钢前体产物（18）。

公开(公告)号：US10557179B2

公开(公告)日：2020-02-11

申请号：US15700212

申请日：2017-09-11

Applicant: POSCO ,  Primetals Technologies Austria GmbH

Inventor： Myoung-Kyun Shin ,  Dong-Won Kim ,  Sang-Hyun Kim ,  Jun-Hyuk Lee ,  Jan Friedemann Plaul ,  Norbert Rein ,  Karl Zehetbauer

IPC: C21B13/00 ,  F27D17/00 ,  C21B13/14

Abstract: 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.

公开(公告)号：US11685961B2

公开(公告)日：2023-06-27

申请号：US17438529

申请日：2020-03-12

Applicant: Primetals Technologies Austria GmbH

Inventor： Roland Eisl ,  Bernhard Hiebl ,  Hanspeter Ofner ,  Norbert Rein ,  Johann Wurm

IPC: C21B13/00 ,  F27B15/18 ,  F27B15/10

CPC classification number: C21B13/0033 ,  C21B13/0073 ,  F27B15/10 ,  F27B15/18 ,  F27M2003/165

Abstract: 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.

公开(公告)号：US20220145412A1

公开(公告)日：2022-05-12

申请号：US17438529

申请日：2020-03-12

Applicant: Primetals Technologies Austria GmbH

Inventor： Roland Eisl ,  Bernhard Hiebl ,  Hanspeter Ofner ,  Norbert Rein ,  Johann Wurm

IPC: C21B13/00 ,  F27B15/18 ,  F27B15/10

Abstract: 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.

公开(公告)号：US10337076B2

公开(公告)日：2019-07-02

申请号：US15117374

申请日：2015-01-27

Applicant: Primetals Technologies Austria GmbH

Inventor： Robert Millner ,  Jan-Friedemann Plaul ,  Norbert Rein

IPC: F27D3/00 ,  F27D3/18 ,  F27D7/02 ,  F27D7/06 ,  C21B13/00 ,  F27B15/08 ,  F27B15/10 ,  F27B15/14 ,  F27B15/16 ,  F27D17/00

Abstract: 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.