公开(公告)号：US20250051866A1

公开(公告)日：2025-02-13

申请号：US18722983

申请日：2022-12-23

Applicant: RENEWABLE IRON FUEL TECHNOLOGY B.V.

Inventor： Lex SCHEEPERS ,  Marcus Wilhelmus Petrus VERHAGEN

IPC: C21B13/00

Abstract: The present invention relates to a method for producing iron fuel from metal oxide containing charge materials via reducing the metal oxide containing charge materials. An object of the present invention is to produce iron in a specific powder form having a particle size distribution and specific surface area, wherein the iron powder is to be used as a starting material for iron fuel combustion.

公开(公告)号：US20250033308A1

公开(公告)日：2025-01-30

申请号：US18709384

申请日：2022-11-10

Applicant: HYBRIT Development AB

Inventor： Anna-Maria Suup ,  Tommy Ruona

IPC: B30B11/16 ,  B30B15/30 ,  C21B13/00 ,  C22B1/24

Abstract: An apparatus for producing hot briquetted iron and a method for producing hot briquetted iron using such an apparatus. The apparatus includes a briquetting press and a force feeder arrangement. The apparatus further includes a powder injection arrangement, the powder injection arrangement including a powder dosing unit and at least one injection line. The powder dosing unit is arranged to be able to dose powder at a predetermined rate to the at least one injection line. Each injection line extends from a line inlet to a line outlet. Each line inlet is arranged to be connectible to a source of pressurized carrier gas and each line outlet is arranged to be able to inject powder into a material supply tank of the force feeder arrangement.

公开(公告)号：US12203150B2

公开(公告)日：2025-01-21

申请号：US17419170

申请日：2019-11-08

Applicant: VALE S.A.

Inventor： Flávio de Castro Dutra ,  Valdirene Gonzaga De Resende ,  Fabrício Vilela Parreira

IPC: C22B1/243 ,  B22F1/12 ,  C21B13/00

Abstract: The present invention relates to a process for the production of iron ore fines agglomerate, resistant to handling, transport, and contact with water. The process consists of mixing iron ore fines with sodium silicate, nanomaterials, catalyst, fluxes and plasticizer; adjusting the moisture of the mixture; agglomerating the mixture by pelletizing, briquetting or extrusion; performing curing at room temperature. The process does not require energy input for heat treatment and allows obtaining an agglomerated product with high physical and metallurgical performance to replace metallic load, including sinter, in reduction furnaces, without the emission of harmful gases such as CO2, dioxins, furans, and SOx.

公开(公告)号：US20240327946A1

公开(公告)日：2024-10-03

申请号：US18712175

申请日：2020-06-18

Applicant: Northeastern University

Inventor： Yuexin HAN ,  Shuai YUAN ,  Peng GAO ,  Yanjun LI ,  Yongsheng SUN

IPC: C22B1/10 ,  C21B13/00 ,  C22B1/24 ,  C22B47/00

CPC classification number: C22B1/10 ,  C21B13/0033 ,  C22B1/24 ,  C22B47/00

Abstract: A suspension roasting system includes a feeding bin, a Venturi dryer, a first cyclone preheater, a second cyclone preheater, a pre-oxidation suspension roasting furnace, a thermal separation cyclone cylinder, a suspension and reduction roasting furnace, a collecting bin, a grinding machine, a magnetic ore separator and a draught fan. A suspension roasting method includes: crushing iron and manganese ores; conveying the ores to the Venturi dryer; starting the draught fan and enabling combustion gas in the Venturi dryer to be mixed with dust ores to remove water; enabling obtained solid materials to enter the pre-oxidation suspension roasting furnace after being preheated by the first and second cyclone preheaters; enabling obtained gas to enter the suspension and reduction roasting furnace through the thermal separation cyclone cylinder; performing suspension and reduction roasting; enabling obtained reducing slag powder to enter the collecting bin through cooling cyclone cylinders; and performing grinding and magnetic separation.

公开(公告)号：US20240327939A1

公开(公告)日：2024-10-03

申请号：US18295050

申请日：2023-04-03

Applicant: Saudi Arabian Oil Company

Inventor： Faisal B. Almutairi ,  Ali Abdulaziz Al-Ugla

IPC: C21C7/00 ,  C21B13/00 ,  C21C5/52

CPC classification number: C21C7/00 ,  C21B13/0073 ,  C21C5/5252 ,  C21B2300/02 ,  C21C2300/08

Abstract: Solar energy is concentrated and transferred to a heat transfer fluid, thereby heating the heat transfer fluid. The heat transfer fluid includes solid particles. Heat from the heat transfer fluid is used to melt a metal. While transferring heat to the furnace, at least a portion of the melted metal is oxidized to form steel. Heat is transferred from a first portion of the heat transfer fluid to a working fluid. The working fluid is then flowed through a turbine generator, which generates electrical power in response. A first water stream is electrolyzed using the electrical power generated by the turbine generator to produce a first oxygen stream and a first hydrogen stream. Heat is transferred from a second portion of the heat transfer fluid to a reactor that houses a recycling agent to thermochemically split a second water stream into a second oxygen stream and a second hydrogen stream.

公开(公告)号：US20240309476A1

公开(公告)日：2024-09-19

申请号：US18571212

申请日：2022-06-20

Applicant: HYBRIT Development AB

Inventor： Raimon Perea Marin ,  Farzad Mohseni-Mörner ,  Javad Fayazi

IPC: C21B13/00 ,  C21B13/02

CPC classification number: C21B13/0073 ,  C21B13/02 ,  C21B2100/26 ,  C21B2100/44 ,  C21B2100/66

Abstract: A system for the production of sponge iron, including a direct reduction shaft, a reduction gas source, a reduction gas container, a primary circuit for conducting at least a part of a top gas therethrough, a secondary circuit for conducting at least a portion of gas removed from gas conducted through the primary circuit, said secondary circuit being connected in one end to the primary circuit and in another end to the reduction gas container, a second gas line connecting the reduction gas source with the reduction gas container, and a third gas line connecting the reduction gas container with the first gas line. The system also includes a control unit configured to control a flow of reduction gas from reduction gas source to the first gas line and to control a flow of reduction gas from the reduction gas container to the first gas line through the third gas line, wherein the control unit is configured to enable a flow of reduction gas from the reduction gas container to said first gas line while correspondingly reducing a flow rate of reduction gas from the reduction gas source to said first gas line.

公开(公告)号：US12084731B2

公开(公告)日：2024-09-10

申请号：US17294197

申请日：2019-11-01

Applicant: POSCO

Inventor： Chang Kuk Ko ,  Myoung Kyun Shin

IPC: C21B13/14 ,  B01D47/00 ,  B01D53/18 ,  C21B13/00 ,  F27B15/02

CPC classification number: C21B13/146 ,  B01D47/00 ,  B01D53/18 ,  C21B13/0033 ,  C21B13/0073 ,  C21B13/14 ,  F27B15/02 ,  C21B2100/44 ,  C21B2100/66 ,  C21B2300/02

Abstract: A device for manufacturing molten iron is provided. The device for manufacturing the molten iron includes a multi-stage fluidized reduction furnace for reducing a powdered iron ore including hematite and limonite, a melting gas furnace connected to the fluidized reduction furnace through an ore conduit and a gas conduit, a fluidized bed oxidation furnace for oxidizing magnetite to be converted into hematite through steam provided from the fluidized reduction furnace, and a hydrogen processing unit for processing hydrogen generated by the oxidation reaction of magnetite in the fluidized bed oxidation furnace.

公开(公告)号：US20240240275A1

公开(公告)日：2024-07-18

申请号：US18559905

申请日：2021-05-18

Applicant: ArcelorMittal

Inventor： George TSVIK ,  Dmitri BOULANOV ,  Jon REYES RODRIGUEZ ,  Odile CARRIER ,  Sarah SALAME ,  José BARROS LORENZO ,  Marcelo ANDRADE ,  Dennis LU

IPC: C21B13/00 ,  C21B13/02

CPC classification number: C21B13/0073 ,  C21B13/02 ,  C21B2100/26 ,  C21B2100/44

Abstract: A method for manufacturing Direct Reduced Iron wherein iron ore is reduced in a DRI shaft by a reducing gas including hydrogen obtained by extraction from coke oven gas through a hydrogen separation unit, the remaining part of such coke oven gas being at least partly injected in the transition section of said DRI shaft to set the carbon amount of said Direct Reduced Iron from 0.5 to 3 wt. % and a DRI manufacturing equipment including a DRI shaft (1) and a hydrogen separation unit (5), wherein said hydrogen separation unit (5) inlet is connected to a coke oven gas supply (6) and includes a first outlet connected to the DRI shaft to inject hydrogen separated from said coke oven gas and a second outlet connected to the transition section of said DRI shaft (1) to inject at least part of the remaining part of such coke oven gas.

公开(公告)号：US20240229171A9

公开(公告)日：2024-07-11

申请号：US18278029

申请日：2021-02-26

Applicant: ArcelorMittal

Inventor： Hugo DA GAMA CAMPOS ,  Jean-Martin VAN DER HOEVEN

IPC: C21B5/00 ,  C21B5/06 ,  C21B13/00 ,  C21C5/52

CPC classification number: C21B5/006 ,  C21B5/06 ,  C21B13/00 ,  C21C5/52 ,  C21B2300/04 ,  C21C2300/06

Abstract: A method to manufacture a steel product in a steelmaking plant including several different tools, the method including the definition of at least two manufacturing routes using different tools and the calculation of the expected level of CO2 emissions associated to each of this defined manufacturing routes.

公开(公告)号：US20240200158A1

公开(公告)日：2024-06-20

申请号：US18415066

申请日：2024-01-17

Applicant: Elemental Recycling, Inc.

Inventor： Ian Bishop, JR. ,  Ronald G. Presswood, JR.

IPC: C21B13/00 ,  C01B17/02 ,  C01B17/033 ,  C01B32/05 ,  C07C1/00 ,  C10B1/02 ,  C10B49/14 ,  C10J3/57 ,  C22B15/00 ,  C22B61/00 ,  F27D3/16

CPC classification number: C21B13/0006 ,  C01B17/02 ,  C01B17/033 ,  C01B32/05 ,  C07C1/00 ,  C10B1/02 ,  C10B49/14 ,  C10J3/57 ,  C22B15/0052 ,  C22B61/00 ,  F27D3/16 ,  C10J2300/093 ,  C10J2300/0969 ,  C10J2300/1675

Abstract: Methods and systems are described for the synthesis of graphene, synthetic graphite, and other carbon allotropes. Thus, the method describes a method to synthesize carbon nanostructures and synthetic graphite by using unrecyclable materials, such as plastic wastes (i.e., Polypropylene, Styrene, Polyethylene, Poly Vinyl Chloride, PVDF, tires, etc.), Liquid wastes (i.e. tank bottoms, PVDF liquid foams, contaminated oils, etc.) (unrecyclable carbons) regardless of its state, cleanliness, or whether it is contaminated with other byproducts.