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WO/2023/204063A1 |
The present invention provides a feature for melting direct reduction iron in which gangue is efficiently removed from the direct reduction iron. This invention comprises: a direct reduction step for bringing iron ore or a mixture of iro...
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WO/2023/204069A1 |
Provided is a technique of melting direct-reduced iron that removes a gangue component efficiently from the direct-reduced iron. This method comprises: a melting step of melting direct-reduced iron in an induction melting furnace to obta...
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WO/2023/204071A1 |
Provided is a technology that enables efficient production of grained iron having a low P concentration. The present invention comprises: a first step for melting reduced iron to obtain primary molten iron; a second step for separating t...
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WO/2023/199551A1 |
Provided is a blast furnace operation method which, when executing a blast furnace operation in which a highly-concentrated reducing gas is to be generated in front of a tuyere inside a furnace, can appropriately maintain the liquid perm...
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WO/2023/199550A1 |
Provided is an operation method for a blast furnace that, when the blast furnace is operated to generate a high-concentration reducing gas within the furnace before a tuyere, improves the properties of slag produced in a lower part of th...
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WO/2023/193714A1 |
Disclosed in the present application is a method and a system for coupling copper slag recycling with CO2 mineralization based on industrial solid waste. The method comprises: acquiring copper slag; performing a slagging treatment; acqui...
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WO/2023/191699A1 |
The present invention concerns a process and a configuration for producing steel, whereby iron ore oxide material (5) is reduced with a reducing agent (H) in a direct reduction facility (7). The reducing agent (H) is produced by electrol...
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WO/2023/186967A1 |
The invention relates to a method for the reduction of a metal oxide-containing material (2), wherein a reducing gas which is obtained using ammonia NH3 is used. The reducing gas is supplied to a reduction reactor (2) containing the meta...
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WO/2023/190840A1 |
In addition to top-loaded coke and fuel blown in by tuyere, a reducing gas preheated to 800℃ or more is blown into a furnace from tuyeres (2a, 2b, 2c, 2d) in this operating method for a blast furnace. The method for operating a blast f...
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WO/2023/187527A1 |
Embodiment of disclosure relates to a system and method for measuring burden profile distribution in a blast furnace. The system comprises a phased array-based radar unit which is configured to perform plurality of scans in interior of a...
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WO/2023/184811A1 |
A method for producing steel by using a waste low-grade ore instead of a rich iron ore as a raw material, comprising the following steps: using a waste low-grade ore instead of a conventional rich iron ore as a raw material, wherein the ...
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WO/2023/190234A1 |
This blast furnace abnormality determination device comprises: a sensor signal acquisition means for acquiring measurement data of a plurality of sensors installed at different positions in a blast furnace; an evaluation index calculatio...
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WO/2023/184962A1 |
A drum quick-cooling dry treatment device for blast furnace slag for use in waste heat recovery, comprising a blast furnace slag trough, multiple sets of cooling granulation drums and a heat exchanger. The cooling granulation drum compri...
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WO/2023/187501A1 |
Embodiment of disclosure relates to a system for measuring two-dimensional (2D) burden profile distribution in a metallurgical furnace. The system includes a thermal detection module configured to scan a top burden surface in the metallu...
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WO/2023/191701A1 |
The present invention relates to reduction of a metal oxide material (5) and to a metal material production configuration (1) adapted for reduction of a metal oxide material (5) holding thermal energy into a reduced metal material (16). ...
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WO/2023/184002A1 |
The present invention relates to a method for producing high iron-content products with a high physical and metallurgical performance for use in reduction furnaces (high-temperature and direct reduction furnaces) and smelting furnaces (s...
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WO/2023/186993A1 |
A process for operating an oxidizable combustion gas cleaning unit in a metallurgical plant, comprising the steps of: (a) passing an oxidizable combustion gas from a metallurgical reactor, in particular a blast furnace gas from a blast f...
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WO/2023/190262A1 |
The present invention provides improved ironworks operation assistance. The present invention is an operation assistance method that is to be executed by an information processing device at an ironworks that has a blast furnace section...
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WO/2023/188880A1 |
A method for determining the slag level of a blast furnace, the method comprising: a step for acquiring an image of a raceway 5 in the blast furnace imaged, through a tuyere 2 provided in a furnace wall 1 of the blast furnace, by a camer...
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WO/2023/180834A1 |
The invention relates to a process for preparing a hydraulic binder, wherein a slag melt containing P2O5 and iron oxide and further containing CaO and SiO2 are subjected to a cooling step by adding an oxidizing agent for the iron oxide i...
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WO/2023/173159A1 |
A method and an apparatus for producing direct reduced iron (DRI) move a material comprising iron ore and biomass through a preheat zone (20) and then a reduction zone (30) of a hearth furnace (3) and heat and progressively reduce iron o...
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WO/2023/173632A1 |
The present invention relates to a method and a device for producing direct reduced iron by means of a hydrogen-based shaft furnace, and belongs to the technical field of metallurgical industry. The method for producing direct reduced ir...
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WO/2023/177407A1 |
A modular direct reduction system for producing direct reduced iron (DRI) includes a reformer system which receives a flow of feed gas and which discharges a flow of reducing gas, the reformer system including a plurality of separate ref...
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WO/2023/173902A1 |
Disclosed in the present invention is a waste-heat recovery system matching a HIsmelt smelting reduction ironmaking system, the waste-heat recovery system comprising: a cooling flue and a flue steam drum, wherein an outlet end of the coo...
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WO/2023/171501A1 |
This method for predicting a molten iron temperature in a blast furnace is executed by a device constituted of a computer, and comprises: an image conversion process step in which an image conversion process unit provided in the computer...
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WO/2023/168939A1 |
An environmentally-friendly ironmaking slag treatment system, comprising at least a front water slag runner, a water slag tank and a high-altitude exhaust mechanism, wherein the front water slag runner is used for introducing flushed sla...
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WO/2023/173147A1 |
A method of, and an installation for, recovering iron ore from iron ore fines using hydrogen, the method including the steps of feeding iron ore fines with a particle size distribution of up to 3mm and hydrogen reducing gas into a rotary...
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WO/2023/171486A1 |
Provided is a coating material that is for use in direct-reduction iron production, and that does not inhibit carburizing of obtained reduced iron. The coating material has a material containing iron oxide, and a coating layer containing...
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WO/2023/172597A2 |
According to embodiments, disclosed is a method and system to maintain the soft and sparse slag characteristic favorable for an electric arc to efficiently transfer the energy to molten iron with the power input per furnace area higher t...
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WO/2023/171467A1 |
The present invention provides a method for producing a hot metal, the method being capable of producing a hot metal by charging a recovered C source, as a carbonaceous material-containing agglomerated ore, through the throat of a shaft ...
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WO/2023/171468A1 |
Proposed are a method for manufacturing a carbonaceous material-containing agglomerate ore and a method for manufacturing molten pig iron, with which a highly reducible source material can be obtained and the quantity of reducing materia...
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WO/2023/162728A1 |
A method for producing an iron source, comprising: a preparation step in which a mixture for roasting is prepared by mixing a raw material containing a phosphorus-containing iron ore and a flux; a roasting step in which the mixture for r...
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WO/2023/163558A1 |
According to one embodiment of the present invention, provided is a steelmaking method comprising the steps of: (a) extracting molten iron manufactured by charging a blast furnace with iron ore and biomass and by reducing the iron ore wi...
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WO/2023/162729A1 |
A method for producing an iron source, comprising: a preparation step in which a mixture for roasting is prepared by mixing a raw material containing a phosphorus-containing iron ore and a flux; a roasting step in which the mixture for r...
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WO/2023/160940A1 |
The invention relates to a metallurgical production system (100) for generating and/or processing steel. For this purpose, the production plant has an electrolysis unit (110) for generating hydrogen from supplied water and current, a hyd...
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WO/2023/162344A1 |
Provided is a method for operating a blast furnace, whereby it becomes possible to further reduce the amount of carbon dioxide discharged from the blast furnace under stable operation of the blast furnace. A regenerated organic substance...
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WO/2023/162389A1 |
The present invention significantly reduces CO2 emission and enables stable operation regardless of fluctuations in various conditions, in a process for reducing fine iron ore by means of a fluidized-bed reduction furnace and a smelting ...
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WO/2023/158364A1 |
The present invention relates to a method for the production of sponge iron from iron ore, comprising the steps of: charging iron ore into a direct reduction shaft (1); introducing a hydrogen-rich process gas into the direct reduction sh...
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WO/2023/156904A1 |
The present disclosure relates, according to some embodiments to a method for steel production, the method comprising forming a hydrogen and a carbon from a natural gas using thermal plasma electrolysis; reducing iron ore fines with the ...
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WO/2023/151242A1 |
Disclosed in the present invention are a metal smelting device and a steelmaking production line. Since a first channel for circulation of a liquid metal is provided between a second chamber and a first chamber in the present invention, ...
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WO/2023/153407A1 |
Since blast furnace gas discharged from a blast furnace contains a large amount of CO gas that did not contribute to ore reduction, blast furnace gas containing unused CO gas is again blown into the blast furnace through blast furnace tu...
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WO/2023/152621A1 |
The method according to the present invention comprises the steps of : - combining the reagents of a carbothermal reaction to form a mixture to be subjected to heat treatment, said reagents comprising the component (MO) in which the elem...
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WO/2023/142213A1 |
A blast furnace edge airflow stability control method, comprising: constructing a database; and selecting blast furnace operation parameters satisfying a first preset condition from the database to generate a blast furnace operation para...
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WO/2023/142734A1 |
Disclosed in the present invention is an iron-making method of a hydrogen-enriched carbon cycle blast furnace, comprising: by taking oxygen enrichment of a conventional blast furnace as a reference period, enabling the oxygen content of ...
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WO/2023/143870A1 |
The invention relates to a method and to a device for extracting metallic iron (19), in which a methane-rich charge (1) is reformed by supplying carbon dioxide (2) in order to obtain hydrogen and carbon monoxide to form a reduction gas (...
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WO/2023/142481A1 |
The present invention provides a direct reduction process and direct reduction apparatus for iron-containing composite pellets. A method of pre-reduction in a rotary kiln-deep reduction in a melting separation furnace is adopted, a coal-...
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WO/2023/144324A1 |
The present invention relates to a flux composition for producing a binder for taphole clay, comprising at least, by weight relative to the total weight thereof: (i) from 20 to 70% of a hydrocarbon binder; (ii) from 22 to 70% of a compou...
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WO/2023/138057A1 |
The present invention relates to the technical field of metal smelting. Disclosed are a cyclone- and molten iron wall-based smelting apparatus and method. The smelting apparatus comprises an outer cylinder and an inner cylinder; a gasifi...
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WO/2023/139222A1 |
The invention relates to an apparatus (6) for dividing a briquette string (5) which has a plurality of contiguous briquette rows (5a) that are arranged one behind the other (in a longitudinal direction (L)) and each comprise, adjacent to...
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WO/2023/138817A1 |
The invention relates to an apparatus (6) for dividing a briquette string (5) which has a plurality of contiguous briquette rows (5a) that are arranged one behind the other (in a longitudinal direction (L)) and each comprise, adjacent to...
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