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WO/2023/061027A1 |
The present invention provides a blast furnace top material tank pressure equalization gas purification and recovery system and method. The system comprises a blast furnace top material tank, a variable-volume middle section buffer tank,...
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WO/2023/064312A1 |
A stave cooler with a body of cast copper in which are fully disposed a number of independent loops of cooling pipes of CuNi/NiCu only, and each loop having an inlet end and an outlet end fitted with a stainless steel (SS) coupler, and a...
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WO/2023/057110A1 |
The invention relates to a method for operating a steelworks, for example in a blast furnace converter route, or with a direct reduction of iron ore with hydrogen with downstream electrical steel route, preferably additionally a secondar...
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WO/2023/060114A1 |
The Invention pertains to a Process for the manufacturing of hot briquetted iron (HBI) from direct reduced iron (DRI) wherein iron ore is direct reduced in a reactor by a reducing gas consisting of natural gas and/or hydrogen and/or carb...
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WO/2023/054588A1 |
This ironmaking method comprises: a mineral processing step for processing an iron ore having a high water of crystallization content and a loss on ignition of 3-12 mass% into a goethite-rich part having a loss on ignition of at least 4 ...
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WO/2023/052308A1 |
A method for operating a shaft furnace plant comprising a shaft furnace and an ammonia reforming plant is presented, the method comprising the steps of (a.) feeding a stream of ammonia to the ammonia reforming plant; (b.) cracking said s...
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WO/2023/054345A1 |
In the case of this molten iron production method, with the use of a stationary direct-current electric furnace, an auxiliary material is supplied to a stationary direct-current electric furnace in a state in which a solid iron source is...
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WO/2023/046810A1 |
Electric stove for heating a reducing gas, the electric stove comprising: a hollow metal shell body extending along a longitudinal direction; a refractory lining arranged on an inner surface portion of the shell body; a plurality of bric...
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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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