WO2023039651A1 - Aglomerado sólido para utilização em forno siderúrgico de redução - Google Patents
Aglomerado sólido para utilização em forno siderúrgico de redução Download PDFInfo
- Publication number
- WO2023039651A1 WO2023039651A1 PCT/BR2022/050317 BR2022050317W WO2023039651A1 WO 2023039651 A1 WO2023039651 A1 WO 2023039651A1 BR 2022050317 W BR2022050317 W BR 2022050317W WO 2023039651 A1 WO2023039651 A1 WO 2023039651A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coal
- composition
- agglomerate
- solid
- solid agglomerate
- Prior art date
Links
- 239000007787 solid Substances 0.000 title claims abstract description 25
- 230000009467 reduction Effects 0.000 title claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000011248 coating agent Substances 0.000 claims abstract description 11
- 238000000576 coating method Methods 0.000 claims abstract description 11
- 238000011946 reduction process Methods 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims abstract description 4
- 239000003245 coal Substances 0.000 claims description 37
- 238000004939 coking Methods 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 239000011230 binding agent Substances 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 15
- 238000000034 method Methods 0.000 description 11
- 239000004484 Briquette Substances 0.000 description 8
- 238000006722 reduction reaction Methods 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000003610 charcoal Substances 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- 239000011162 core material Substances 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000571 coke Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000004449 solid propellant Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000001033 granulometry Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B55/00—Coking mineral oils, bitumen, tar, and the like or mixtures thereof with solid carbonaceous material
- C10B55/02—Coking mineral oils, bitumen, tar, and the like or mixtures thereof with solid carbonaceous material with solid materials
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/12—Applying additives during coking
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
- C10L5/10—Methods of shaping, e.g. pelletizing or briquetting with the aid of binders, e.g. pretreated binders
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/26—After-treatment of the shaped fuels, e.g. briquettes
- C10L5/28—Heating the shaped fuels, e.g. briquettes; Coking the binders
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/26—After-treatment of the shaped fuels, e.g. briquettes
- C10L5/32—Coating
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/34—Other details of the shaped fuels, e.g. briquettes
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C35/00—Master alloys for iron or steel
Definitions
- the present invention is related to solid agglomerates.
- the present invention relates to solid agglomerates for use in steel reduction furnaces.
- One of the main equipment where the iron reduction process takes place is called a Blast Furnace, and its function is to cause the separation of iron Fe from its FezOa ore.
- This separation occurs through chemical reduction, which involves the separation of a metal from its oxide, and is processed using a reducing agent.
- a reducer is a material that must present a greater attraction for oxygen, under operating conditions, than the metal to be reduced.
- the main reducing agent used in the steel industry is coke, which comes from mineral coal.
- coking coal which is an essential substance in the reduction of iron ore to metallic iron, as it combines with oxygen to create carbon dioxide, iron and slag.
- bituminous coal that forms a solid mass when heated (coking coal); on the other hand, if it does not soften or aggregate on heating, it is called non-coking coal.
- agglomerates in the steel industry is increasingly common.
- the agglomeration process consists of grouping materials with fine granulometry, with the aim of obtaining a product with larger dimensions through the use of binders.
- metallic agglomerates or charcoal briquettes With high quality, taking advantage of the small fractions that are usually discarded.
- coal agglomerates can replace coking coal and metallic agglomerates can replace iron ore.
- coal briquetting technique has been gaining ground in the industry.
- This technique which can be used for both mineral and charcoal, generally involves the steps of: (i) granulometric balancing of coal or biomass particles; (ii) mixture of binders (binders); (iii) mechanical compaction; and (iv) drying the briquettes.
- the documents below describe examples of charcoal briquettes and their respective production processes.
- Document US8585786B2 describes a method and system for briquetting solid fuel, such as coal.
- solid fuel is conveyed through a continuous feed solid fuel treatment plant, treated with electromagnetic energy and briquetted after treatment.
- WO2014098413A1 describes a charcoal briquette and a method for manufacturing the same.
- Such method of manufacturing coal briquettes comprises the steps of (i) supplying pulverized coal, (ii) producing a mixture obtained by mixing between 1 and 5 parts by weight of a hardening agent and between 5 and 15 parts of weight of a binder relative to 100 parts by weight of the pulverized coal, and (iii) molding the mixture.
- the pulverized coal comprises (i) more than 0 and not more than 50% by weight of low grade coal and (ii) a balance of coal ash.
- Low grade coal has between 25% by weight and 40% by weight of a volatile fraction (dry basis) and has a crucible swelling number of greater than 0 and less than 3.
- Document WO2013152959A1 describes a process for the production of a briquette containing coals, where the coals together with a binder system are subjected to mixing with the introduction of steam and the mixture obtained is subjected to pressing to form briquettes.
- the residual steam obtained is used as at least part of the steam introduced during mixing.
- Document AU2008203855B2 describes a process for forming a briquette composed of low classification coal and aggregate material, characterized in that it comprises: drying a low classification coal feed to produce a dry coal with a moisture content between 8 to 16% by weight; mixing the dry charcoal with an aggregate material; and compacting the dry coal and aggregate material mixture into briquettes.
- coal briquettes can be used in the process of reducing iron ore or its agglomerates in steel kilns.
- briquettes end up sticking together, forming the so-called “bunches”. This is because, inside the furnace, the heat causes the surfaces of the briquettes to soften, favoring the bonding of one briquette with another or with the ore.
- the present invention has as a first objective to provide a solid agglomerate for use in a steel furnace that eliminates the need for a previous coking treatment.
- the present invention has as a second objective to provide a solid agglomerate for use in a steel furnace that prevents sticking (formation of curls) between the agglomerates inside the furnace when it is heated.
- the present invention provides a solid agglomerate for use in a steel reduction furnace, comprising a core formed by a first composition and a coating formed by a second composition, in which the second composition comprises at least one compound that acts as an inert sacrificial material during the reduction process inside the steel furnace.
- Figure 1 illustrates a schematic cross-sectional view of a solid agglomerate according to a preferred embodiment of the present invention.
- the present invention therefore provides a solid agglomerate A, shown in figure 1, for use in a reduction steel furnace.
- the solid agglomerate A of the present invention comprises a core N formed by a first composition and a cladding R formed by a second composition, wherein the second composition, which forms the cladding R, comprises at least one compound which acts as a sacrificial material inert during the reduction process inside the steel furnace.
- the solid agglomerate A of the present invention can be, for example, a coal fuel briquette or a metallic agglomerate, such as a pellet or a ferrous briquette.
- the first composition, which forms the core N comprises at least one coking coal and at least one binder.
- Core material N is the coking material commonly used in fuel briquettes.
- the first composition, which forms the N core comprises 60 to 70% by mass of coking coal and 6 to 10% by mass of binder.
- the second composition, which forms the coating R comprises a non-coking carbon, or residue thereof, and at least one binder.
- the carbon in the coating composition R can be, for example, coke powder or coal residues in general, low quality coals, etc.
- any inert carbon residue (non-coking) can be used in the composition of the coating R. In this way, when heating inside the reduction furnace, the material of the coating R will not coke, which prevents sticking between the surfaces of the agglomerates and, consequently, the formation of bunches.
- the second composition, which forms the coating R comprises 70 to 95% by mass of non-coking coal, coke powder, coal residues or any combination of these, and 5 to 15% by mass of binder.
- the solid agglomerate A is a metallic agglomerate, such as a pellet or ferrous briquette.
- an inert material preferably metallic, is used in the R coating of the agglomerate to serve as a sacrificial material.
- the nucleus N would be formed by the material of interest.
- the solid agglomerate A of the present invention can be manufactured in any existing geometric shape, so that the scope of protection of the present invention is not limited to the oval shape shown in figure 1.
- the present invention provides a solid agglomerate A for use in a steel furnace that eliminates the need for prior coking treatment since the sacrificial material in the coating prevents sticking (formation of curls) between the agglomerates inside the oven when heating.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Manufacture Of Iron (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020247012251A KR20240068685A (ko) | 2021-09-16 | 2022-08-12 | 강철 환원로에 사용하기 위한 고체 응집체 |
CN202280062808.5A CN117999371A (zh) | 2021-09-16 | 2022-08-12 | 用于钢还原炉的固体附聚物 |
CA3231757A CA3231757A1 (en) | 2021-09-16 | 2022-08-12 | Solid agglomerate for use in a steel reduction furnace |
AU2022344865A AU2022344865A1 (en) | 2021-09-16 | 2022-08-12 | Solid agglomerate for use in siderurgical reduction furnaces |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR102021018410-8A BR102021018410B1 (pt) | 2021-09-16 | Aglomerado sólido para utilização em forno siderúrgico de redução | |
BR1020210184108 | 2021-09-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023039651A1 true WO2023039651A1 (pt) | 2023-03-23 |
Family
ID=83362172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/BR2022/050317 WO2023039651A1 (pt) | 2021-09-16 | 2022-08-12 | Aglomerado sólido para utilização em forno siderúrgico de redução |
Country Status (5)
Country | Link |
---|---|
KR (1) | KR20240068685A (pt) |
CN (1) | CN117999371A (pt) |
AU (1) | AU2022344865A1 (pt) |
CA (1) | CA3231757A1 (pt) |
WO (1) | WO2023039651A1 (pt) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3158547A (en) * | 1961-06-30 | 1964-11-24 | Air Reduction | Method of encapsulating a graphite body containing metallic and ceramic particles |
WO2006015597A1 (en) * | 2004-08-09 | 2006-02-16 | Kim Dam-Johansen | Encapsulated solid fuel for mineral melting furnaces |
BRPI0700982A (pt) * | 2007-03-21 | 2008-11-04 | Marcio Tilly Moutinho Da Silva | aglomerado de moinha de carvão mineral coqueificado |
WO2013152959A1 (de) | 2012-04-10 | 2013-10-17 | Siemens Vai Metals Technologies Gmbh | Verfahren und vorrichtung zur brikettherstellung |
US8585786B2 (en) | 2006-03-31 | 2013-11-19 | Coaltek, Inc. | Methods and systems for briquetting solid fuel |
WO2014098413A1 (ko) | 2012-12-21 | 2014-06-26 | 주식회사 포스코 | 성형탄 및 그 제조 방법 |
AU2008203855B2 (en) | 2008-08-13 | 2015-07-23 | Mecrus Pty Ltd | Process of forming a composite briquette |
-
2022
- 2022-08-12 AU AU2022344865A patent/AU2022344865A1/en active Pending
- 2022-08-12 KR KR1020247012251A patent/KR20240068685A/ko unknown
- 2022-08-12 CA CA3231757A patent/CA3231757A1/en active Pending
- 2022-08-12 WO PCT/BR2022/050317 patent/WO2023039651A1/pt active Application Filing
- 2022-08-12 CN CN202280062808.5A patent/CN117999371A/zh active Pending
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3158547A (en) * | 1961-06-30 | 1964-11-24 | Air Reduction | Method of encapsulating a graphite body containing metallic and ceramic particles |
WO2006015597A1 (en) * | 2004-08-09 | 2006-02-16 | Kim Dam-Johansen | Encapsulated solid fuel for mineral melting furnaces |
US8585786B2 (en) | 2006-03-31 | 2013-11-19 | Coaltek, Inc. | Methods and systems for briquetting solid fuel |
BRPI0700982A (pt) * | 2007-03-21 | 2008-11-04 | Marcio Tilly Moutinho Da Silva | aglomerado de moinha de carvão mineral coqueificado |
AU2008203855B2 (en) | 2008-08-13 | 2015-07-23 | Mecrus Pty Ltd | Process of forming a composite briquette |
WO2013152959A1 (de) | 2012-04-10 | 2013-10-17 | Siemens Vai Metals Technologies Gmbh | Verfahren und vorrichtung zur brikettherstellung |
WO2014098413A1 (ko) | 2012-12-21 | 2014-06-26 | 주식회사 포스코 | 성형탄 및 그 제조 방법 |
EP2937407A1 (en) * | 2012-12-21 | 2015-10-28 | Posco | Coal briquette and production method therefor |
Also Published As
Publication number | Publication date |
---|---|
CN117999371A (zh) | 2024-05-07 |
KR20240068685A (ko) | 2024-05-17 |
AU2022344865A1 (en) | 2024-04-04 |
CA3231757A1 (en) | 2023-03-23 |
BR102021018410A2 (pt) | 2022-07-05 |
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