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WO/2023/048232A1 |
This agglomerated ore is a molded object in which a plurality of types of particles are mixed. The plurality of types of particles include at least iron carbide particles and iron oxide particles. At least a portion of the iron oxide par...
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WO/2023/045727A1 |
A system and method for preparing a sintering fuel at a fixed scale. The method comprises the following steps: 1) performing coarse screening on a sintering fuel to obtain an on-sieve coarse-grained fuel and an under-sieve fine-grained f...
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WO/2023/039651A1 |
The present invention relates to solid agglomerates for use in siderurgical reduction furnaces. In this context, the present invention provides a solid agglomerate (A) comprising a core (N) made of a first composition and a coating (R) m...
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WO/2023/043358A1 |
Method for producing steel, which comprises the steps of: providing a predetermined amount of iron ore to a vessel, reducing said iron ore to a predetermined amount of Fe, and carburizing said predetermined amount of Fe in order to produ...
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WO/2023/041804A1 |
The present invention concerns a method for producing carbon monoxide (CO), comprising the steps of: providing a gaseous initial input stream comprising carbon dioxide (CO2) to a plasma zone; at least partially converting said CO2 to CO ...
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WO/2023/040469A1 |
A method for blast furnace iron smelting using multiple media blowing, which comprises: blowing various blowing media into a blast furnace, and loading coke and iron ore into the blast furnace in alternation, wherein the blowing media co...
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WO/2023/040660A1 |
Disclosed in the present invention is a reducing agent-free vacuum iron production method. Under a vacuum condition of 10-10-9 Pa, laser or a solar focused light beam having a power density of 10-104 W/cm2 is used to irradiate an iron-co...
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WO/2023/036441A1 |
The method according to the invention for treating steel mill slag comprises the steps of: A) providing steel mill slag in solid form having a fineness such that the steel mill slag has a specific BET surface area of 0.1 m2/g or more; B)...
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WO/2023/036475A1 |
Direct iron-ore reduction process whereby an NH3-containing a gas feed (24a) is supplied to a gas reformer (25) and reformed therein so as to obtain a hydrogen-containing reducing gas (25a, 25b) which, at least in part, is supplied to a ...
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WO/2023/037034A1 |
A cooling element (4) for a furnace (1) comprises a first side (7) configured to be directed towards the inside (3) of the furnace (1), a second side (8) opposite to the first side (7) and configured to be directed away from the inside (...
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WO/2023/036474A1 |
Process for the continuous direct reduction of iron ore (2) in a direct-reduction unit (1) comprising a direct-ore-reduction zone (4a) and an iron-collection zone (4b), process whereby ammonia (19) is supplied to the iron-collection zone...
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WO/2023/032650A1 |
Provided are: a novel hydrogen heating apparatus for blast furnaces, a hydrogen heating method for blast furnaces, and a blast furnace operation method, which make it possible to reduce the generation amount of CO2 when a hydrogen-based ...
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WO/2023/030956A1 |
The invention relates to a method for producing an iron melt, comprising the steps of: - reducing iron ore to sponge iron, - smelting the sponge iron to form an iron melt in an electric furnace. According to the invention, the sponge iro...
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WO/2023/029816A1 |
The present invention provides a low carbon blast furnace ironmaking method, comprising: injecting heated and pressurized back-injection gas into a blast furnace, injecting pure oxygen into the blast furnace or injecting oxygen-enriched ...
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WO/2023/030944A1 |
The invention relates to a method for producing an iron melt, comprising the steps of: - reducing iron ore to sponge iron, - carburizing sponge iron with a carbonaceous gas, - melting the carburized sponge iron and/or treating the melt p...
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WO/2023/025921A1 |
The invention concerns a method for producing iron containing products, comprising: operating a blast furnace plant to produce liquid pig iron from blast furnace charge material, whereby metallurgical gas comprising blast furnace top gas...
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WO/2023/021870A1 |
The present invention provides a method for estimating the depositional shape of a furnace filling obtained after furnace coke has been consumed using a burner to activate a blast furnace in the blast furnace during blast stop with reduc...
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WO/2023/019917A1 |
The present invention relates to the field of steel smelting, and particularly relates to a carbon cycle-based blast furnace-converter steel production method, comprising the following steps: performing ironmaking in a blast furnace to o...
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WO/2023/018787A1 |
A process for producing direct reduced iron with a hydrogen rich gas, utilizing a non- fired reducing gas heater such as an electric heater to heat the reducing gas to the temperatures sufficient for iron reduction, includes: providing a...
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WO/2023/015752A1 |
An iron-containing powder direct steelmaking device in a reducing atmosphere and a method for using same, relating to the technical field of metallurgy. The device comprises a steelmaking pool (1), a gas making tower (2), a rapid reducin...
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WO/2023/012114A1 |
The invention relates to a direct reduction plant (10), comprising a catalytic reformer (60) and/or a gas furnace and comprising a gas compression system (50) having one or more compressors, wherein the gas compression system (50) compri...
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WO/2023/008170A1 |
Provided are a blast furnace slag level estimation method and a blast furnace slag level estimation device that enable highly accurate estimation of the liquid level of slag. Further provided are an operation guidance method, a hot metal...
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WO/2023/008242A1 |
This molten iron temperature prediction method includes: a reaction amount calculation step (S1) for calculating a in-furnace reaction amount by using a physical model which takes into account reaction and heat transfer phenomenon in the...
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WO/2023/000540A1 |
Provided are a method for measuring a burden surface profile of a blast furnace, a terminal device for measuring a burden surface profile of a blast furnace, and a computer-readable storage medium. The method comprises: S1, measuring the...
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WO/2023/286101A1 |
Apparatus (100) for cooling and recovering energy from a flow of molten or partly molten hot material (13) having a high thermal energy. Said apparatus (100) structurally comprises a technical volume (14) kept in depression and provided ...
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WO/2023/282824A1 |
The present disclosure relates to an iron briquette produced by providing sponge iron pellets, providing carbon powder, producing a mixture of the sponge iron pellets and the carbon powder, and briquetting the mixture to provide an iron ...
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WO/2023/281153A1 |
A method for processing iron ore to obtain steel (501) by feeding the DRI into a smelting furnace (1) so as to obtain an intermediate iron product, which is then subsequently introduced (301) into a conversion unit for obtaining steel (5...
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WO/2023/276352A1 |
A supplied heat quantity estimation method according to the present invention is intended to estimate the quantity of heat suppled to a hot metal in a blast furnace from the quantity of heat supplied into the blast furnace and the veloci...
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WO/2023/278390A1 |
An emergency cooling-water vacuum system and associated method for a pressurized water cooled furnace having an emergency shut off preventing pressurized cooling fluid from moving to the cooling components in the furnace, said system inc...
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WO/2023/274754A1 |
An industrial installation (1) for waste radiative heat recovery from steel slag, said installation (1) being located above a pit (2) in which molten steel slag is discharged and from which solidified steel slag is removed, using a slag ...
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WO/2023/275714A1 |
The present invention relates to a process for treating ladle furnace slag ("white slag") deriving from the refining of steel inside a ladle, said process comprising the following steps: a) adding metallic aluminum to a mixture comprisin...
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WO/2023/276356A1 |
This supplied amount of heat estimation method is a method for estimating the amount of heat supplied to pig iron inside a blast furnace from the amount of heat supplied to the inside of the blast furnace and the speed at which molten pi...
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WO/2023/276353A1 |
A supply heat quantity estimation method according to the present invention is for estimating a heat quantity to be supplied to pig iron in a blast furnace from a heat quantity supplied into the blast furnace and a production speed of mo...
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WO/2023/276357A1 |
A supplied heat quantity estimation method according to the present invention includes: a step for calculating the pig iron production speed by using the amount of oxygen in an air blast per unit time, the amount of carbon that is gasifi...
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WO/2023/273263A1 |
Disclosed are a method for treating a mixture of laterite nickel ore leached slag and jarosite slag and an application thereof, the method comprising the following steps: granulating and drying jarosite slag, performing primary roasting,...
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WO/2022/271064A1 |
A system for the production of sponge iron, the system comprising a direct reduction shaft (201), a reduction gas source (206), a reduction gas container (209), a primary circuit (210) for conducting at least a part of a top gas through ...
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WO/2022/270516A1 |
Provided are a method for producing granular solidified slag, whereby slag processing such as heat recovery processing, steam aging processing, and carbonization processing of solidified slag can be efficiently performed, and a productio...
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WO/2022/271576A1 |
A process for producing hot briquetted iron with increased solid carbonaceous material and/or flux includes: providing a. shaft furnace of a direct reduction plant to reduce iron oxide with reducing gas; providing a hot briquette machine...
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WO/2022/271065A1 |
A system for the production of sponge iron, the system comprising a direct reduction shaft (201) comprising a first inlet (202) for introduction of iron ore into the shaft (201); a first outlet (203) for removal of sponge iron from the s...
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WO/2022/270194A1 |
Proposed is a method by which the achievement of energy saving and the reduction of CO2 emissions are possible when producing reduced iron from iron oxide. This method for producing reduced iron comprises: an iron oxide filling step for ...
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WO/2022/270027A1 |
Provided are: a gaseous reducing material blowing method by which a combustion reaction in the vicinity of a connection part to a blowpipe in a blast furnace tuyere is prevented, and combustion flames generated in a raceway space formed ...
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WO/2022/267190A1 |
Provided in the present invention is a method for treating high-phosphorus oolitic iron ores. The method comprises the following steps: A) mixing the high-phosphorus oolitic iron ores, a dephosphorizing agent and water, and pressing the ...
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WO/2022/262792A1 |
The present invention provides a pre-reduced pellet preparation apparatus and method based on grate-rotary kiln. The pre-reduced pellet preparation apparatus comprises a grate-rotary kiln pellet oxidation system and a hydrogen-based shaf...
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WO/2022/264561A1 |
The present invention ensures a high molten pig iron temperature even when a furnace lower part has a high heat flow ratio. An oxygen blast furnace 1 comprises: a furnace body 2 into which a raw material is charged; and a tuyere 3 thro...
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WO/2022/264904A1 |
The present invention proposes a method that enables achieving of energy conservation and reduction of CO2 emission when producing reduced iron from an iron oxide. This method includes a circulation system in which mutual connections are...
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WO/2022/264549A1 |
Provided is an agglomerated ore assessing method that enables assessment of clustering of reduced iron while taking into consideration the thermal compensation attributed to sensible heat in blown air when reduction is performed at a hig...
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WO/2022/263189A1 |
The invention relates to a method for treating sponge iron, wherein, following the production of sponge iron, the sponge iron is coated with a coating to protect same against reoxidation and/or corrosion, the sponge iron as a core being ...
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WO/2022/264667A1 |
Provided is a method for producing an agglomerated ore by which reduced iron can be efficiently produced by hydrogen reduction without requiring preheating of raw materials and raising the temperature of reducing gas. With the method f...
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WO/2022/264666A1 |
Provided is a shaft furnace operation method by which reduced iron can be produced using a shaft furnace while suppressing CO2 emissions and without preheating raw materials. This shaft furnace operation method is for obtaining reduced...
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WO/2022/262812A1 |
Disclosed is a pre-reduced pellet preparation device and method, wherein the pre-reduced pellet preparation device comprises a straight grate system and a hydrogen-based shaft furnace reduction system; by organically combining the roasti...
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