WO2024257779A1 - Procédé de production de matériau auxiliaire de sidérurgie et matériau auxiliaire de sidérurgie - Google Patents

Procédé de production de matériau auxiliaire de sidérurgie et matériau auxiliaire de sidérurgie Download PDF

Info

Publication number
WO2024257779A1
WO2024257779A1 PCT/JP2024/021276 JP2024021276W WO2024257779A1 WO 2024257779 A1 WO2024257779 A1 WO 2024257779A1 JP 2024021276 W JP2024021276 W JP 2024021276W WO 2024257779 A1 WO2024257779 A1 WO 2024257779A1
Authority
WO
WIPO (PCT)
Prior art keywords
metal
container
aluminum
steelmaking
ash
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2024/021276
Other languages
English (en)
Japanese (ja)
Inventor
雄介 泉
貴之 小川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ogawa Aluminium Industries Co Ltd
Original Assignee
Ogawa Aluminium Industries Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ogawa Aluminium Industries Co Ltd filed Critical Ogawa Aluminium Industries Co Ltd
Publication of WO2024257779A1 publication Critical patent/WO2024257779A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/02—General features in the manufacture of pig-iron by applying additives, e.g. fluxing agents
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the present invention relates to a method for manufacturing steelmaking secondary materials and steelmaking secondary materials.
  • Aluminum ash is a powder-like substance that is generated during processes such as the heating and melting of metallic aluminum.
  • Aluminum ash is composed of aluminum oxide, metallic aluminum, and aluminum nitride. It also contains metal oxides, chlorides, and fluorides derived from the elements that make up aluminum alloys.
  • Aluminum ash is called by a number of names, including aluminum dross, aluminum dross, aluminum dross residual ash, and aluminum residual ash.
  • Aluminum ash contains metallic aluminum. For this reason, metallic aluminum is recovered from aluminum ash as necessary, and secondary and tertiary aluminum ash is generated during the recovery process.
  • aluminum ash generated in Japan is ultimately used by steel manufacturers. This is because aluminum ash contains a certain amount of metallic aluminum.
  • the metallic aluminum contained in aluminum ash serves as a heat source in the steelmaking process, utilizing the exothermic reaction between metallic aluminum and oxygen, and is an effective, inexpensive secondary material for removing oxygen from molten steel (deoxidation).
  • aluminum oxide (alumina) which is produced by the reaction between metallic aluminum and oxygen, and the alumina originally contained in aluminum ash, are used as raw materials for slag in the steelmaking process.
  • the method of using the aluminum as a powder does not require granulation or compression, making the secondary material manufacturing process easier.
  • the aluminum ash is prone to scattering as dust when it is used in the steelmaking process. Therefore, using the aluminum as a powder has the disadvantage of resulting in a lower usage yield, a worsening working environment, and an increase in steelmaking dust.
  • Binders include polyvinyl alcohol, carboxymethyl cellulose, starch, pitch, tar, polystyrene, polyethylene, polyurethane, epoxy resin, phenolic resin, hydrated lime, quicklime, water, etc., used singly or in combination, and are generally kneaded and compressed, and heated as necessary (Patent Document 1, Patent Document 2, Patent Document 3, Patent Document 4).
  • organic compound-based binders when used, they burn during the steelmaking process, generating smoke.
  • the solvent water reacts with the aluminum nitride in the aluminum ash during the auxiliary material manufacturing process, generating ammonia, which has a strong, foul odor.
  • the binder it is desirable for the binder to be uniformly dispersed between the aluminum ash particles, so it is preferable for the binder to be in the form of a liquid or fine powder.
  • methods that use binders require the use of organic solvents and/or fine powders that are easily dispersed, for example, to increase the fluidity of the binder. All of these factors worsen the working environment during the steelmaking process and auxiliary material manufacturing process.
  • binders are expensive in terms of raw material cost.
  • those that require heating require high frictional heat during the auxiliary material manufacturing process. These binders result in high costs.
  • Some types of binders contain steel impurities such as sulfur. This not only worsens the working environment, but can also reduce the quality of steel products.
  • the present invention has been made in view of the above circumstances, and its objectives are as follows. (1) Deterioration of the working environment in the secondary material manufacturing process using aluminum ash as a raw material and in the steelmaking process when secondary materials are used. (2) Reduction in the yield rate of use due to scattering, etc. in the steelmaking process when secondary materials are used. (3) Reduction in product yield rate due to powdering, etc. in the secondary material manufacturing process, transportation process, and use process.
  • the first aspect of the invention provides a method for producing steelmaking secondary materials, which includes a step of housing metal ash and/or metal particles in a metal housing without adding a binder, and sealing the metal housing.
  • metal ash and/or metal granules are contained in a metal container, and the metal container containing the metal ash and/or metal granules is sealed. This prevents the metal ash and/or metal granules from scattering, and also prevents a decrease in product yield due to powdering during the manufacturing process, transportation process, and/or use process of the steelmaking auxiliary material.
  • the invention relating to the first feature, since no binder is added to the metal ash and/or metal granules contained in the metal container, it is possible to prevent components other than the metal ash and/or metal granules contained in the steelmaking auxiliary materials from scattering during the steelmaking process when the auxiliary materials are used, thereby preventing a decrease in the yield of use.
  • scattering of metal ash and/or metal granules can be prevented by storing metal ash and/or metal granules in a non-metallic container made of non-metals such as resin, wood, natural fibers, etc., and sealing the container.
  • a non-metallic container made of non-metals such as resin, wood, natural fibers, etc.
  • the non-metals that make up the non-metallic container burn during steelmaking, generating smoke, which can worsen the working environment and lead to a deterioration in the quality of steel products.
  • a metal container is used to contain metal ash and/or metal granules, which prevents smoke from being generated from the container and prevents deterioration of the working environment in the secondary material manufacturing process using metal ash and/or metal granules as raw materials, and in the steelmaking process when secondary materials are used.
  • the invention relating to the first feature can solve the following problems: (1) deterioration of the working environment in the secondary material manufacturing process using metal ash and/or metal granules as raw materials and in the steelmaking process when secondary materials are used; (2) decrease in usage yield due to scattering, etc. in the steelmaking process when secondary materials are used; and (3) decrease in product yield due to powdering, etc. in the secondary material manufacturing process, transportation process, and use process.
  • the invention relating to the third feature can solve the following problems: (1) deterioration of the working environment in the secondary material manufacturing process using metal ash and/or the metal granules as raw materials and in the steelmaking process when the secondary material is used; (2) decrease in usage yield due to scattering, etc. in the steelmaking process when the secondary material is used; and (3) decrease in product yield due to powdering, etc. in the secondary material manufacturing process, transportation process, and use process.
  • the fourth aspect of the invention is the second or third aspect of the invention, which provides a steelmaking auxiliary material in which the surface of the metal container is neither labeled nor painted.
  • the invention relating to the fourth feature can solve the following problems: (1) deterioration of the working environment in the secondary material manufacturing process using metal ash and/or the metal granules as raw materials and in the steelmaking process when the secondary material is used; (2) decrease in usage yield due to scattering, etc. in the steelmaking process when the secondary material is used; and (3) decrease in product yield due to powdering, etc. in the secondary material manufacturing process, transportation process, and use process.
  • FIG. 1 is a schematic side view showing an example of a steelmaking secondary material 1 according to the present embodiment.
  • FIG. 2 is a schematic plan view of the steelmaking secondary material 1.
  • FIG. 3 is a schematic diagram showing another example of the steelmaking secondary material 1 according to the present embodiment.
  • FIG. 4 is a cross-sectional view taken along line AA of FIG.
  • the manufacturing method of steelmaking auxiliary material 1 in this embodiment includes at least a storage step of storing metal ash and/or metal particles 2 in a metal storage body, and a sealing step of sealing the metal storage body containing the metal ash and/or metal particles 2.
  • the manufacturing method of the steelmaking auxiliary material 1 in this embodiment preferably further includes a pressure molding step of pressure molding the metal ash and/or metal granules 2 contained in the metal container.
  • a pressure molding step in the manufacturing method of the steelmaking auxiliary material 1 in this embodiment, the specific gravity of the steelmaking auxiliary material 1 can be increased, and the weight per volume of the metal ash and/or metal granules 2 contained in the steelmaking auxiliary material 1 can be increased.
  • the powder constituting the metal ash and/or metal granules 2 is more closely adhered by the pressure molding, and the effect of preventing the metal ash and/or metal granules 2 from scattering can be expected.
  • metal ash refers to the material that remains after burning metal.
  • Metal granules refer to materials that include not only metal powder, but also cylindrical, elliptical, and other metal pellets and metal chips.
  • the metal ash and/or metal granules 2 will be described as being aluminum ash 2 as a representative example, but it is not intended to limit the metal ash and/or metal granules to being aluminum ash.
  • the metal ash and/or metal granules include, for example, the following: ⁇ Electric furnace dust (powders containing FeO, ZnO, etc.) ⁇ Metal cutting chips (including not only aluminum cutting chips but also cutting chips of iron, etc.) ⁇ Calcium oxide (CaO: raw material for steelmaking slag, mainly powder) -Other steelmaking auxiliary materials (mainly chips and flakes of ferrosilicon, ferronickel, etc., including carbon powder, granular carbon, etc.) Other slag raw materials (mainly powders of SiO2 , Al2O3 , etc. ) ⁇ Other fluxes (packing and feeding chloride or fluoride powders to aluminum melting furnaces, not steelmaking electric
  • the accommodation step is a step of accommodating the aluminum ash 2 in a metal accommodation body. Since the aluminum ash 2 is accommodated in the metal accommodation body in the steelmaking auxiliary material 1, the accommodation body is prevented from burning and generating smoke, and it is possible to prevent a deterioration in the working environment in the steelmaking process when the auxiliary material is used and/or a decrease in the usage yield due to scattering or the like in the steelmaking process when the auxiliary material is used.
  • the manufacturing method of the steelmaking auxiliary material 1 in this embodiment includes a storage step, which makes it possible to prevent scattering and/or powdering of the aluminum ash 2 without adding a binder to the aluminum ash 2 to solidify the powdered aluminum ash 2.
  • Aluminum ash 2 There are no particular limitations on the aluminum ash 2, so long as it is powder-like aluminum ash generated when metallic aluminum and/or its alloy are heated and melted.
  • the aluminum ash 2 is also called aluminum dross, aluminum dross residual ash, aluminum residual ash, etc., and contains aluminum oxide, metallic aluminum, and/or aluminum nitride, etc.
  • the aluminum ash 2 may contain oxides, chlorides, and/or fluorides, etc., of various elements constituting the aluminum alloy.
  • the steelmaking auxiliary material 1 containing the aluminum ash 2 can be added as an auxiliary material for steelmaking and used as a deoxidizer and/or a heating agent, etc.
  • the steelmaking auxiliary material 1 containing the aluminum ash 2 added as an auxiliary material acts as a deoxidizer and removes excess oxygen contained in molten pig iron, molten steel, etc.
  • the steelmaking auxiliary material 1 containing the aluminum ash 2 added as an auxiliary material can act as a heating agent and increase the temperature of the steelmaking process.
  • the cost-effectiveness of steelmaking is improved.
  • the amount of aluminum ash 2 disposed of can be reduced, and the environmental burden caused by the aluminum ash 2 can be alleviated.
  • the metal container is not particularly limited as long as it can contain aluminum ash 2 .
  • the material of the metal container preferably contains a metal and/or its alloy that has the same chemical formula as the metal that constitutes the metal ash and/or metal granules.
  • the material of the metal container preferably contains metallic aluminum and/or an aluminum alloy.
  • Metallic aluminum and/or an aluminum alloy contain aluminum that contributes to the steelmaking process, just like aluminum ash 2. Therefore, by using a metal container that contains metallic aluminum and/or an aluminum alloy, the manufacturing method of the embodiment can further increase the amount of aluminum that contributes to the steelmaking process.
  • the material of the metal container may contain an iron-based material. This makes it possible to carry out a steelmaking process using the iron-based material contained in the metal container. This makes it possible for the manufacturing method of the embodiment to increase the amount of steel, etc. obtained in the steelmaking process.
  • the material of the metal container preferably does not contain any materials that would become impurities in the steelmaking process.
  • materials that would become impurities in the steelmaking process include copper, tin, zinc, and lead.
  • the metallic container preferably has no labels or paint on its surface.
  • a metallic container that has no labels or paint on its surface it is possible to prevent paint, labels, and/or adhesives and glues used in labeling from burning and generating smoke, which could worsen the working environment in the steelmaking process when secondary materials are used, and reduce the yield rate due to scattering, etc., in the steelmaking process when secondary materials are used.
  • the metal container may be made of scrap metal material.
  • scrap metal material for the metal container, the scrap metal material to be disposed of and/or recycled can be effectively utilized as the metal container for the steelmaking auxiliary material 1. This reduces the amount of scrap metal material to be disposed of and/or the amount to be recycled, thereby reducing the environmental burden and/or recycling costs caused by the scrap metal material.
  • the scrap metal material is preferably scrap metal material from which the labels and/or paint have been removed.
  • a cylindrical metal container 3 and a bag-shaped metal container 4 but the shape of the metal container is not particularly limited as long as it is capable of containing aluminum ash 2, and may be any of the various shapes that containers of the prior art can take, such as various hollow cylinders exemplified by hollow rectangular parallelepipeds, hollow polyhedrons, hollow spheres, hollow cones, etc.
  • Fig. 1 is a schematic side view showing an example of a steelmaking secondary material 1 according to this embodiment.
  • Fig. 2 is a schematic plan view of the steelmaking secondary material 1.
  • the metal container is preferably a metal cylindrical container 3 including a container body 31 having an opening and a container lid 32 capable of sealing the opening.
  • the shape of the metallic tubular container 3 can be prevented from changing during transportation, storage, and use of the metallic container. This can facilitate transportation, storage, and use of the metallic container.
  • the metallic container is a metallic cylindrical container 3 that includes a container body 31 having an opening and a container lid 32 that can seal the opening, so that after aluminum ash 2 is placed in the container body 31 through the opening, the metallic cylindrical container 3 can be sealed using the container lid 32.
  • the materials of the metallic cylindrical container 3, container body 31, and container lid 32 may be the same as the materials of the metallic container described above.
  • the lower limit of the thickness of the side portion of the container body 31 is preferably 0.1 mm or more, more preferably 0.2 mm or more, and even more preferably 0.5 mm or more.
  • the upper limit of the thickness of the side portion of the container body 31 is preferably 2.0 mm or less, more preferably 1.0 mm or less, and even more preferably 0.7 mm or less.
  • the container lid 32 is preferably made of a substantially flat metal plate, such as an aluminum plate or an iron plate. This can increase stability when stacking the metal cylindrical containers 3.
  • the opening area of the opening of the container body 31 is preferably smaller than the planar projection area of the metal cylindrical container 3 when the metal cylindrical container 3 is placed with the opening facing up.
  • the upper limit of the ratio of the opening area of the opening to the planar projected area of the metallic cylindrical container 3 is preferably 90% or less, more preferably 81% or less, and even more preferably 73% or less.
  • the lower limit of the ratio of the opening area of the opening to the planar projected area of the metallic cylindrical container 3 is preferably 9% or more, more preferably 16% or more, and even more preferably 25% or more.
  • the metallic cylindrical container 3 preferably has no labels or paint on the surfaces of the container body 31 and container lid 32.
  • a metallic cylindrical container 3 with no labels or paint on the surfaces it is possible to prevent paint, labels, and/or adhesives and glues used in labeling from burning and generating smoke, which could worsen the working environment in the steelmaking process when secondary materials are used, and reduce the yield rate due to scattering, etc., in the steelmaking process when secondary materials are used.
  • the metallic tubular container 3 may be manufactured using a plate material such as aluminum. By manufacturing the metallic tubular container 3 using a plate material such as aluminum, the manufacturing method of the embodiment can manufacture the metallic tubular container 3 more easily than by casting or the like.
  • the metallic tubular container 3 may be made of waste metal cans, such as used aluminum cans and steel cans. By using waste metal cans as the metallic tubular container 3, the waste metal cans that are subject to disposal and/or recycling can be effectively utilized as the metallic tubular container 3 of the steelmaking auxiliary material 1. This reduces the amount of waste metal cans that are disposed of and/or subject to recycling, and can reduce the environmental burden and/or recycling costs caused by the waste metal cans.
  • the metallic cylindrical container 3 is made from a waste metal can, the metallic container can be obtained without processing a metal plate or the like into a cylindrical shape. This can reduce various costs and/or environmental burdens that arise when processing a metal plate or the like into the metallic cylindrical container 3.
  • the scrap metal can is preferably a scrap metal can from which the label and/or paint has been removed.
  • a metallic cylindrical container 3 using a scrap metal can from which the label and/or paint has been removed it is possible to effectively utilize the scrap metal cans while preventing the paint, label, and/or adhesives and glues used in attaching the labels from burning and generating smoke, which can worsen the working environment in the steelmaking process when secondary materials are used, and can also reduce the usage yield due to scattering, etc., in the steelmaking process when secondary materials are used.
  • the container body 31 of the metallic cylindrical container 3 has no labels or paint on its surface. This prevents paint, labels, and/or adhesives and glues used in labeling from burning and generating smoke, which can lead to reduced yields due to scattering during the steelmaking process when using secondary materials.
  • the upper part of the container body 31 and the container lid 32 of the metallic cylindrical container 3 have no labels or paint on their surfaces. This prevents paint, labels, and/or adhesives and glues used in labeling from burning and generating smoke, which can worsen the working environment in the steelmaking process when secondary materials are used, and can prevent the secondary materials from scattering and causing a decrease in the yield rate in the steelmaking process when secondary materials are used.
  • Metal bag-shaped container 4) 3 is a schematic diagram showing another example of the steelmaking secondary material 1 according to this embodiment.
  • the metal container is preferably a metal bag-shaped container 4 having an opening.
  • the metal container is a metal bag-shaped container 4
  • the shape of the metal bag-shaped container 4 can be changed during transportation, storage, and use of the metal container. This can facilitate transportation, storage, and use of the metal container.
  • FIG. 4 is a cross-sectional view taken along line A-A in FIG. 2.
  • the aluminum ash 2 is contained within the container body 31.
  • the opening at the top of the container body 31 is sealed by the container lid 32. This prevents the aluminum ash 2 from scattering.
  • the aluminum ash 2 is contained within the container body 31 and the metallic cylindrical container 3 containing the aluminum ash 2 is sealed, it is possible to prevent a decrease in product yield due to powdering, etc., during the manufacturing process, transportation process, and/or use process of the steelmaking auxiliary material 1.
  • the sealing process preferably includes a process of sealing the opening of the metal bag-shaped container 4 with the container sealing part 41. This allows the metal bag-shaped container 4 to be sealed using the container sealing part 41 after the aluminum ash 2 is contained in the metal bag-shaped container 4 through the opening.
  • the lower limit of the pressure applied to the aluminum ash 2, etc. during pressure molding is preferably 20 MPa or more, more preferably 25 MPa or more, and even more preferably 30 MPa or more.
  • the pressure applied to the aluminum ash 2, etc. during pressure molding refers to the value measured using a pressure gauge manufactured by Riken Kiki Co., Ltd.
  • specific gravity refers to a value calculated from the mass measured using an electronic balance manufactured by A&D Co., Ltd. and the volume measured using a tape measure with a volume measuring function.
  • the lower limit of the weight of the steelmaking auxiliary material 1 after the pressure forming process is preferably 100 g or more, more preferably 200 g or more, and even more preferably 500 g or more.
  • the steelmaking auxiliary material 1 is more likely to come into contact with molten iron and/or molten slag in the steelmaking process without scattering.
  • This allows more aluminum ash 2 to be used as an auxiliary material without scattering. This allows the reaction between metallic aluminum and oxygen to occur more efficiently. This also allows aluminum oxide to be supplied to the slag more efficiently.
  • the appearance of the steelmaking auxiliary material 1 varies depending on the type of metal container.
  • the metal container is a metallic cylindrical container 3
  • the aluminum ash 2 is cylindrical and surrounded by a metal plate and lid
  • the metal container is a metallic bag-shaped container 4
  • the aluminum ash 2 is bag-shaped and surrounded by metal foil.
  • aluminum oxide also called “alumina”
  • alumina aluminum oxide produced by the reaction of metallic aluminum contained in aluminum ash 2 with oxygen, and the alumina originally contained in aluminum ash 2
  • the slag can be used as aggregate for concrete, etc.
  • the aluminum ash 2 is contained in a metal container, and the metal container containing the aluminum ash 2 is sealed, so that the contained aluminum ash 2 does not spill out of the container, and scattering of the aluminum ash 2 is prevented.
  • the aluminum ash 2 is contained in a metal container, and the metal container containing the aluminum ash 2 is sealed, it is possible to prevent a decrease in product yield due to powdering, etc., during the manufacturing process, transportation process, and/or use process of the steelmaking auxiliary material 1.
  • the aluminum ash 2 is granulated by mixing various binders with the aluminum ash 2, compressing it, and heating it as necessary.
  • binders include polyvinyl alcohol, carboxymethyl cellulose, starch, pitch, tar, polystyrene, polyethylene, polyurethane, epoxy resin, phenolic resin, hydrated lime, quicklime, water, and/or a mixture of two or more of these.
  • the method of granulating the aluminum ash 2 by mixing a binder with the aluminum ash 2 can prevent powdering during use of the steelmaking auxiliary material 1.
  • the granulated secondary materials contain organic resin, which can burn during the steelmaking process and generate smoke, which can worsen the working environment.
  • the aluminum nitride contained in the aluminum ash 2 reacts with water during the auxiliary material manufacturing process to generate ammonia, which has a strong, foul odor, and can worsen the working environment.
  • the inorganic compound contains steel impurities such as sulfur, not only will it worsen the working environment, but there is also a risk of reducing the quality of the steel product.
  • the aluminum ash 2 contained in the secondary material may return to powder due to collisions or the like during the production, transportation, and/or use of the secondary material, resulting in a decrease in product yield and a situation requiring the cleaning and removal of the powdered aluminum ash 2.
  • aluminum ash 2 is contained in a metal container and sealed to manufacture the steelmaking auxiliary material 1, so scattering and powdering of the aluminum ash 2 can be prevented without adding a binder to the aluminum ash 2.
  • the steelmaking auxiliary material 1 manufactured by the manufacturing process according to the embodiment since no binder is added to the aluminum ash 2 contained in the metal container, it is possible to prevent deterioration of the working environment and/or deterioration of the quality of the steel product due to components other than the aluminum ash 2 contained in the steelmaking auxiliary material 1.
  • a metal container is used to contain the aluminum ash 2, which prevents smoke from being generated from the container and prevents deterioration of the working environment and/or deterioration of the quality of the steel product due to components other than the aluminum ash 2 contained in the steelmaking auxiliary material 1.
  • the steelmaking auxiliary material 1 manufactured by the manufacturing process according to the embodiment can solve the following problems: (1) deterioration of the working environment in the auxiliary material manufacturing process using aluminum ash as a raw material and in the steelmaking process when the auxiliary material is used; (2) decrease in the usage yield due to scattering, etc. in the steelmaking process when the auxiliary material is used; and (3) decrease in the product yield due to powdering, etc. in the auxiliary material manufacturing process, transportation process, and use process.
  • Example 1 Steelmaking secondary material 1 using a metal cylindrical container 3 made of aluminum A 0.2 mm thick aluminum plate was bent and processed into a cylindrical shape with a diameter of 66 mm and a height of 70 mm, and the same aluminum plate was processed into a disk shape to cover one bottom surface of the cylinder, thereby obtaining the container body 31 of the metallic cylindrical container 3 according to the embodiment.
  • a container lid 32 capable of sealing the opening on the unblocked bottom surface of the container body 31 was obtained.
  • the metallic cylindrical container 3 according to the embodiment was obtained.
  • This metallic cylindrical container 3 was approximately cylindrical in shape with a diameter of 70 mm, height of 60 mm, weight of 20 g, plate thickness of 2 mm, and specific gravity of 1.4.
  • Example 1 300 g of powdered aluminum ash 2 containing aluminum oxide, metallic aluminum, and aluminum nitride was placed in the obtained metallic cylindrical container 3, sealed with the container lid 32, and then pressure-molded at a pressure of 25 MPa to obtain a cylindrical steelmaking auxiliary material 1 (Example 1).
  • the weight of Example 1 was 320 g.
  • Comparative Example 2 Pressed aluminum ash 2 A cylindrical steelmaking auxiliary material (Comparative Example 2) was obtained by pressure molding 280 g of powder-like aluminum ash 2 containing aluminum oxide, metallic aluminum, and aluminum nitride in the same manner as in Example 1. The weight of Comparative Example 2 was 300 g.
  • the pressure applied to the aluminum ash 2, etc. during pressure molding is the value measured using a pressure gauge manufactured by Riken Kiki Co., Ltd. Furthermore, the weight is measured using an electronic balance manufactured by A&D Co., Ltd.
  • the aluminum ash 2 did not break down into powder due to the collision during transportation.
  • the aluminum ash 2 scattered during transportation.
  • a corner was chipped off due to the collision during transportation, causing part of the aluminum ash 2 to break down into powder and scatter.
  • the aluminum ash 2 did not break down due to collisions during storage.
  • the aluminum ash 2 scattered when stacked and removed.
  • corners were chipped due to collisions when stacked and removed, causing some of the aluminum ash 2 to break down and scatter.
  • the metal container made sufficient contact with the molten iron, and the aluminum ash 2 did not scatter. In the Example, no smoke was produced. In the Comparative Example 1, the aluminum ash 2 accumulated on the surface of the molten iron, resulting in poor contact efficiency, and some of the aluminum ash 2 scattered.
  • the Examples are manufactured by a procedure of storing aluminum ash 2 in a metal container and sealing the metal container that contains the aluminum ash 2, and therefore, unlike the Comparative Example, it is believed that scattering and powdering of the aluminum ash 2 are prevented during manufacturing, transportation, storage, and use. As a result, it is believed that the Examples prevent the deterioration of the work environment due to scattering and powdering of the aluminum ash 2 compared to the Comparative Example. Also, it is believed that the Examples reduce the reduction in aluminum ash 2 due to scattering and powdering of the aluminum ash 2, and improve the product yield as an auxiliary material compared to the Comparative Example.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

La présente invention vise à parvenir simultanément, en ce qui concerne un matériau auxiliaire de sidérurgie contenant des cendres métalliques et/ou un matériau granulaire métallique, à : la prévention de la détérioration de l'environnement de travail et de la détérioration de la qualité d'un produit en acier en raison de constituants autres que les cendres métalliques ou similaires contenus dans le matériau auxiliaire de sidérurgie ; la prévention de la diffusion des cendres métalliques ou similaires ; et la prévention de la pulvérisation du matériau auxiliaire de sidérurgie pendant la production, le transport et l'utilisation. À cet effet, la présente invention concerne un procédé de production d'un matériau auxiliaire de sidérurgie 1 qui comprend une étape consistant à stocker des cendres métalliques 2 ou similaires dans un corps de stockage métallique, tel qu'un corps de stockage cylindrique métallique 3 ou un corps de stockage de type sac métallique 4 sans ajouter un liant, et sceller le corps de stockage métallique. Dans le matériau auxiliaire de sidérurgie 1 produit par le procédé de production de la présente invention, de préférence, les cendres métalliques ou similaires 2 sont stockées dans le corps de stockage métallique, le liant n'est pas stocké dans le corps de stockage métallique, et le corps de stockage métallique est scellé. En outre, de préférence, seules les cendres métalliques ou similaires 2 sont logées dans le corps de stockage métallique, et ni une étiquette ni une peinture n'est appliquée sur la surface du corps de stockage métallique.
PCT/JP2024/021276 2023-06-12 2024-06-12 Procédé de production de matériau auxiliaire de sidérurgie et matériau auxiliaire de sidérurgie Pending WO2024257779A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2023-096538 2023-06-12
JP2023096538A JP7564573B1 (ja) 2023-06-12 2023-06-12 製鋼副資材の製造方法及び製鋼副資材

Publications (1)

Publication Number Publication Date
WO2024257779A1 true WO2024257779A1 (fr) 2024-12-19

Family

ID=92969892

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2024/021276 Pending WO2024257779A1 (fr) 2023-06-12 2024-06-12 Procédé de production de matériau auxiliaire de sidérurgie et matériau auxiliaire de sidérurgie

Country Status (2)

Country Link
JP (1) JP7564573B1 (fr)
WO (1) WO2024257779A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5049112A (fr) * 1973-06-28 1975-05-01
JPS5154023A (ja) * 1974-11-07 1976-05-12 Sumitomo Metal Ind Yokohenokarushiumutenkazai
JPS6442513A (en) * 1987-08-07 1989-02-14 Nisshin Steel Co Ltd Method for adding metallic calcium into molten metal
JPH04350112A (ja) * 1991-05-28 1992-12-04 Nippon Steel Corp 溶鉄用添加剤およびその製造方法
JPH05171241A (ja) * 1991-12-25 1993-07-09 Nippon Steel Corp 溶銑脱りん用精錬剤
JPH05279724A (ja) * 1992-04-01 1993-10-26 Hitachi Cable Ltd 製鋼用添加剤
JPH06322429A (ja) * 1993-05-14 1994-11-22 Osaka Koukai Kk 溶融金属の清浄化と介在物の制御方法
JPH07179926A (ja) * 1993-12-24 1995-07-18 Nippon Steel Weld Prod & Eng Co Ltd 金属カプセル添加剤
JPH0941016A (ja) * 1995-08-01 1997-02-10 Yoshio Kitagawa 鋳鉄の溶解方法
JP2002018412A (ja) * 2000-07-10 2002-01-22 Yahashi Kogyo Kk アルミ灰圧縮造粒品及びその製造方法

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5049112A (fr) * 1973-06-28 1975-05-01
JPS5154023A (ja) * 1974-11-07 1976-05-12 Sumitomo Metal Ind Yokohenokarushiumutenkazai
JPS6442513A (en) * 1987-08-07 1989-02-14 Nisshin Steel Co Ltd Method for adding metallic calcium into molten metal
JPH04350112A (ja) * 1991-05-28 1992-12-04 Nippon Steel Corp 溶鉄用添加剤およびその製造方法
JPH05171241A (ja) * 1991-12-25 1993-07-09 Nippon Steel Corp 溶銑脱りん用精錬剤
JPH05279724A (ja) * 1992-04-01 1993-10-26 Hitachi Cable Ltd 製鋼用添加剤
JPH06322429A (ja) * 1993-05-14 1994-11-22 Osaka Koukai Kk 溶融金属の清浄化と介在物の制御方法
JPH07179926A (ja) * 1993-12-24 1995-07-18 Nippon Steel Weld Prod & Eng Co Ltd 金属カプセル添加剤
JPH0941016A (ja) * 1995-08-01 1997-02-10 Yoshio Kitagawa 鋳鉄の溶解方法
JP2002018412A (ja) * 2000-07-10 2002-01-22 Yahashi Kogyo Kk アルミ灰圧縮造粒品及びその製造方法

Also Published As

Publication number Publication date
JP2024178043A (ja) 2024-12-24
JP7564573B1 (ja) 2024-10-09

Similar Documents

Publication Publication Date Title
US5397379A (en) Process and additive for the ladle refining of steel
US5186742A (en) Method and composition for use in recycling metal containing furnace dust
US5912403A (en) Cold briquette of waste materials as an aggregate for smelting furnaces of an iron foundry and method of producing the same
JPS5839203B2 (ja) 造滓剤およびその製造方法
CN101522924B (zh) 铁系粉末材料及其制法以及制钢原料用团块
JP7564573B1 (ja) 製鋼副資材の製造方法及び製鋼副資材
US5993508A (en) Briquette as an additive for metallurgic purposes comprising silicon-containing residues, and process for its production
CN102292290A (zh) 利用对生产再生铝的盐废料经后续处理所得废料获得铝酸钙的方法
US6989040B2 (en) Reclaimed magnesium desulfurization agent
US9580768B2 (en) Synthetic slag briquettes for use in steelmaking
US4274869A (en) Desulphurization of metals
US1869925A (en) Article for introducing materials in a metallurgical bath
JPH09316512A (ja) 酸化鉄ブリケットを副原料として使用する鋼の溶製方法
US6602316B1 (en) Briquette for lowering the viscosity of metallurgical slag and process for its production
EA014202B1 (ru) Способ и устройство для изготовления брикетов без связующего вещества, а также брикетов из металлической стружки и металлической пыли
JP3929260B2 (ja) 亜鉛濃縮用成形体及び該成形体を使用する製鋼ダスト中の亜鉛の濃縮方法
SE519776C2 (sv) Metod vid framställning av stål, varigenom ett metall- och fluoridinnehållande hydroxidslam återföres till en stålsmälta
JP2001107129A (ja) 製鋼用脱酸剤及びその製造方法
US3883347A (en) Slag-forming agent for steelmaking
JP2000309827A (ja) 製鋼用助剤
JP2003160808A (ja) アルミドロス成形品およびその製造方法
JP3316270B2 (ja) 金属精錬用石灰系フラックスの製造法
JPH02204348A (ja) スラグの改質方法及びその装置
JP4590864B2 (ja) 粉砕方法
JP2002180138A (ja) 金属原料

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24823394

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE