WO2022208985A1 - 焼結鉱の製造方法および粉化抑制方法 - Google Patents
焼結鉱の製造方法および粉化抑制方法 Download PDFInfo
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- WO2022208985A1 WO2022208985A1 PCT/JP2021/042919 JP2021042919W WO2022208985A1 WO 2022208985 A1 WO2022208985 A1 WO 2022208985A1 JP 2021042919 W JP2021042919 W JP 2021042919W WO 2022208985 A1 WO2022208985 A1 WO 2022208985A1
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- sintered ore
- cao
- sintering
- raw material
- ratio
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 230000001629 suppression Effects 0.000 title abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 54
- 238000005245 sintering Methods 0.000 claims abstract description 47
- 230000009467 reduction Effects 0.000 claims description 21
- 238000010298 pulverizing process Methods 0.000 claims description 19
- 150000001875 compounds Chemical class 0.000 claims description 8
- 238000005469 granulation Methods 0.000 claims description 7
- 230000003179 granulation Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 abstract description 9
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 3
- 239000008188 pellet Substances 0.000 abstract 2
- 238000005453 pelletization Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 101
- 229910052595 hematite Inorganic materials 0.000 description 25
- 239000011019 hematite Substances 0.000 description 25
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 25
- 239000002245 particle Substances 0.000 description 14
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 11
- 238000010304 firing Methods 0.000 description 10
- 229910052742 iron Inorganic materials 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 239000010410 layer Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000010587 phase diagram Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- WETINTNJFLGREW-UHFFFAOYSA-N calcium;iron;tetrahydrate Chemical compound O.O.O.O.[Ca].[Fe].[Fe] WETINTNJFLGREW-UHFFFAOYSA-N 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000000571 coke Substances 0.000 description 3
- 238000013329 compounding Methods 0.000 description 3
- 239000011361 granulated particle Substances 0.000 description 3
- 238000011946 reduction process Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010410 dusting Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- -1 return ore Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 240000006909 Tilia x europaea Species 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0046—Making spongy iron or liquid steel, by direct processes making metallised agglomerates or iron oxide
-
- 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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/004—Making spongy iron or liquid steel, by direct processes in a continuous way by reduction from ores
-
- 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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
- C22B1/18—Sintering; Agglomerating in sinter pots
-
- 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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2413—Binding; Briquetting ; Granulating enduration of pellets
-
- 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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/243—Binding; Briquetting ; Granulating with binders inorganic
-
- 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 producing sintered ore with excellent reduction pulverization characteristics, which is used as a raw material for direct reduction processes and blast furnace processes, and a method for suppressing pulverization.
- Blast furnaces used in the steelmaking industry charge iron sources such as lump ore and sintered ore together with coke from the top of the furnace, while blowing reducing gas from the bottom of the furnace to melt and reduce the iron sources. This is a facility that produces hot metal. In order to promote the reaction between the reducing gas and the iron source, it is necessary to allow a sufficient amount of gas to flow inside the blast furnace. It is important to reduce costs by
- Patent Documents 1 and 2 propose a technique of sintering magnetite ore by microwave irradiation, and manufacturing sintered ore mainly composed of magnetite by such a sintering method. is possible. Further, Patent Document 3 proposes a technique for reducing the amount of hematite containing secondary hematite by reducing hematite in sintered ore and reducing it to wustite.
- Patent Documents 1 and 2 can only be applied to magnetite (Fe 3 O 4 )-based ores, which are scarcely distributed in the market as an iron source, and the equipment and run costs tend to be high. I had a problem.
- Patent Document 3 it is necessary to use a reducing gas to reduce the iron source. Therefore, the sintering machine needs to be equipped with a reduction device, and there is a problem that the running cost for reduction increases.
- An object of the present invention is to propose a method for producing sintered ore and a method for suppressing pulverization that can obtain sintered ore with low reduction pulverization property by raw material design and temperature control without requiring expensive equipment investment. It is in.
- the present invention provides a method for producing a sintered ore in which a sintering compound raw material is granulated to prepare a sintered granulated raw material, and the sintered granulated raw material is fired to obtain a sintered ore, Sintering is performed using a sintering compound raw material in which the ratio Fe 2 O 3 /(Fe 2 O 3 +CaO) of Fe 2 O 3 and CaO contained therein is within the range of 0.76 to 0.84.
- a method for producing sintered ore characterized in that
- the present invention provides a sintering compounding raw material in which the ratio of Fe 2 O 3 and CaO, Fe 2 O 3 /(Fe 2 O 3 +CaO), is in the range of 0.76 to 0.84.
- a method for suppressing pulverization of sintered ore characterized by obtaining sintered ore with low reduction pulverizability by sintering using.
- Fe 2 O 3 and CaO contained in the iron source raw material have a Fe 2 O 3 /(Fe 2 O 3 +CaO) ratio of 0.76 to 0.80;
- Fe 2 O 3 and CaO prepared to have a Fe 2 O 3 /(Fe 2 O 3 +CaO) ratio of 0.76 to 0.84 contained in the raw material for sintering are added to the Fe 2 O 3 and CaO Adding from the latter stage during granulation of sintering compounding raw materials other than is a more preferred embodiment.
- the Fe 2 O 3 and CaO contained in the raw material for sintering attention is paid to Fe 2 O 3 and CaO contained in the raw material for sintering, and the ratio of these, that is, the Fe 2 O 3 /(Fe 2 O 3 +CaO) ratio is set to 0.76 to 0.84.
- the Fe 2 O 3 /(Fe 2 O 3 +CaO) ratio is set to 0.76 to 0.84.
- a sintered ore with low reduction pulverizability can be obtained without requiring expensive equipment investment.
- the Fe 2 O 3 /(Fe 2 O 3 +CaO) ratio described in this application is a weight ratio.
- FIG. 4 is a phase diagram for Fe 2 O 3 and CaO;
- (a), (b) is a figure for demonstrating one Embodiment of the state of the particle
- (a), (b) is a figure for demonstrating other embodiment of the state of the particle
- FIG. 1 shows a phase diagram for Fe 2 O 3 and CaO in sinter.
- Ordinary sintered ore has a component composition as shown in FIG. 1 by firing a sintered granulated raw material containing Fe 2 O 3 and CaO after granulation by increasing or decreasing the temperature.
- the temperature is raised to about 1350° C. or higher, a magnetite generation region is formed, and the residual hematite in the sintered ore becomes magnetite.
- hematite is formed when the Fe 2 O 3 /(Fe 2 O 3 +CaO) ratio is in the range of 0.74 to 0.85 and the firing temperature is in the vicinity of 1150°C to 1200°C. It was found that it did not crystallize, and the present invention focused on that point. That is, in the region where the Fe 2 O 3 /(Fe 2 O 3 +CaO) ratio is 0.74 to 0.80, CF (monocalcium ferrite) is formed as the primary crystal, and C 2 F (dicalsim ferrite) is formed thereafter. crystallizes out.
- FIGS. 2A and 2B are diagrams for explaining one embodiment of the state of particles in sintered ore produced according to the production method of the present invention
- FIG. 2A shows a plurality of particles 1
- FIG. 2(b) shows one particle 1 that constitutes the sintered ore 2.
- FIG. 2(a) and 2(b) sintering blended raw materials prepared by adjusting the Fe 2 O 3 /(Fe 2 O 3 +CaO) ratio of Fe 2 O 3 and CaO to 0.76 to 0.84 are used.
- a sintered ore 2 obtained by granulating to prepare a granulated raw material for sintering and then firing the granulated raw material for sintering and particles 1 constituting the sintered ore 2 are shown.
- the particle 1 consists of a single layer.
- the Fe 2 O 3 /(Fe 2 O 3 +CaO) ratio of Fe 2 O 3 and CaO is preferably 0.76 to 0.80.
- FIGS. 3A and 3B are diagrams for explaining another embodiment of the state of particles in sintered ore produced according to the production method of the present invention, and FIG. 3A shows a plurality of A sintered ore 12 composed of particles 11 is shown, and FIG. 3( b ) shows one particle 11 that constitutes the sintered ore 12 .
- FIGS. 3A and 3B are diagrams for explaining another embodiment of the state of particles in sintered ore produced according to the production method of the present invention, and FIG. 3A shows a plurality of A sintered ore 12 composed of particles 11 is shown, and FIG. 3( b ) shows one particle 11 that constitutes the sintered ore 12 .
- FIGS. 3A and 3B are diagrams for explaining another embodiment of the state of particles in sintered ore produced according to the production method of the present invention, and FIG. 3A shows a plurality of A sintered ore 12 composed of particles 11 is shown, and FIG. 3( b ) shows one particle 11 that constitutes the sintered ore 12
- the Fe 2 O 3 /(Fe 2 O 3 +CaO) ratio was adjusted to 0.76 to 0.84, and sintering compound raw materials other than Fe 2 O 3 and CaO From the latter stage of the granulation of Fe 2 O 3 and CaO, the Fe 2 O 3 /(Fe 2 O 3 + CaO) ratio of 0.76 to 0.84 is added to prepare a granulated raw material for sintering. and then sintering the granulated raw material for sintering.
- the particle 11 is composed of an inner layer 13 mainly composed of hematite and an outer layer 14 having a Fe 2 O 3 /(Fe 2 O 3 +CaO) ratio of 0.76 to 0.84.
- ⁇ Test 1> The sintering blended raw materials (iron ore, limestone, return ore, coke fine) and water (water that makes the granules 7.5%) with various blends described in Table 1 below are put in a drum mixer, and the total Granulation was performed for 5 minutes to prepare a granulated raw material for sintering.
- Table 1 the ore A was the northern South American ore, the ore B was the southern South American ore, and the ore C was the Australian ore.
- the granulated raw material for sintering was fired using a pot tester to obtain a sintered ore. Firing was carried out with a constant air volume of 1.2 m 3 /min.
- the obtained sintered ore was subjected to chemical analysis and reduction pulverization test.
- the reduction dusting test was performed according to the method specified in JIS M8720, and the reduction dusting index (RDI) of each sintered ore was obtained.
- the composition and RDI of the sinter are shown in Table 2 below.
- Example 1 compared to Comparative Examples 1 and 2 by setting the Fe 2 O 3 /(Fe 2 O 3 +CaO) ratio to 0.84. Furthermore, in Examples 2 to 4, by setting the Fe 2 O 3 /(Fe 2 O 3 +CaO) ratio to 0.76 to 0.80, the RDI was further improved to below 10. Note that when the Fe 2 O 3 /(Fe 2 O 3 +CaO) ratio is less than 0.76, the limes with high melting points are adjacent to each other, and the time at which the temperature is high in the sintering process is short, so the melting proceeds. First, only very brittle sinter could be obtained.
- Test 2 25% of the raw materials (on a dry basis), excluding coke breeze, were blended so that the Fe 2 O 3 /(Fe 2 O 3 +CaO) ratio after sintering was 0.8.
- Fe is assumed to be Fe 2 O 3 or FeO (existing as magnetite).
- FeO can be assumed to be mainly 0 to 20 mass%.
- the Fe 2 O 3 /(Fe 2 O 3 +CaO) ratio after firing of the coated raw material can be estimated. Specifically, T.I. Since Fe does not change, the T.E.
- Fe--Fe' can be calculated as Fe* derived from Fe 2 O 3 .
- This Fe* is the ratio of Fe 2 O 3 by calculating Fe*/55.85 ⁇ (55.85+24)/(1 ⁇ LOI/100).
- correction is made because the raw material for LOI is reduced, and CaO is also divided by (1-LOI/100).
- LOI stands for Loss On Ignition and is defined in JIS M 8700:2013.
- Table 3 shows the components of the raw materials used in the formulation and the calculated Fe 2 O 3 and Fe 2 O 3 /(Fe 2 O 3 +CaO) ratios after sintering calculated by the above method.
- Test 2 the main raw material (first sintering compound raw material) and water (water that makes the final granulated product 7.5 mass%), which accounts for 75 mass% of the whole, are put in a drum mixer and granulated for a total of 4.5 minutes. After that, the coating raw material (second sintering mixed raw material) was added and granulated for 0.5 minutes to prepare a granulated raw material for sintering. After that, the granulated raw material for sintering was fired using a pot tester. Firing was carried out with a constant air volume of 1.2 m 3 /min. Table 4 below shows the RDI of the sintered ore of Comparative Example 2 and the RDI of the sintered ore of Example 5 obtained by preparing the granulated raw material for sintering by the above coating method and then firing it.
- the method for producing sintered ore and the method for suppressing pulverization according to the present invention are not limited to sintered ore, but are applicable to iron-making raw materials containing Fe 2 O 3 and CaO, especially for raw materials that require suppression of reduction pulverization characteristics. However, it can be applied in the same way.
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Abstract
Description
(1)前記鉄源原料に含まれるFe2O3およびCaOのFe2O3/(Fe2O3+CaO)比を0.76~0.80にすること、
(2)前記焼結配合原料に含まれるFe2O3/(Fe2O3+CaO)比を0.76~0.84に調製したFe2O3およびCaOを、前記Fe2O3およびCaO以外の焼結配合原料の造粒中の後段から添加すること、
がより好ましい態様となる。
図1は、焼結鉱のFe2O3およびCaOについての状態図を示すものである。通常の焼結鉱は、Fe2O3およびCaOを含む造粒後の焼結造粒原料を、昇温、降温して焼成することにより、図1に示すような成分構成のものになる。ここで、図1中の(1)のルートを経るときは、約1350℃以上まで昇温するとマグネタイト生成領域となり、焼結鉱中の残存ヘマタイトがマグネタイトとなる。そこから降温すると、そのマグネタイトはヘマタイトに変わり、さらに約1350℃以下からヘマタイトが晶出する。この晶出したヘマタイトを2次ヘマタイトと呼ぶ。2次ヘマタイトは、その形状、組成から還元粉化を悪化させることが知られている。なお、図1中(2)の低温焼成のルートでも同様であり、溶融物が少なく晶出量を抑制できるものの、降温過程で2次ヘマタイトが生成してしまう。
以下の表1に記載の各種配合を行った焼結配合原料(鉄鉱石、石灰石、返鉱、粉コークス)と水(造粒物が7.5%となる水分)をドラムミキサーに入れ、合計5分間造粒を行い、焼結用造粒原料を作製した。表1中、鉱石Aとしては南米北部鉱を用い、鉱石Bとしては南米南部鉱を用い、鉱石Cとしては豪州鉱を用いた。
試験1で用いた比較例2と同じ原料条件で、Fe2O3/(Fe2O3+CaO)比が0.76~0.84となる原料を、Fe2O3/(Fe2O3+CaO)比を0.76~0.84に調製したFe2O3およびCaO以外の焼結配合原料の造粒後半で添加し、焼結鉱を構成する粒子において、Fe2O3/(Fe2O3+CaO)比が0.76~0.84となる外層として被覆層を設けた場合の効果について検討した。
2、12 焼結鉱
13 内層
14 外層
Claims (4)
- 焼結配合原料を造粒して焼結用造粒原料を作製し、その焼結用造粒原料を焼成して焼結鉱を得る焼結鉱の製造方法において、前記焼結配合原料としてその中に含まれるFe2O3およびCaOの比Fe2O3/(Fe2O3+CaO)が0.76~0.84の範囲内であるものを用いて焼結することを特徴とする、焼結鉱の製造方法。
- 前記焼結配合原料に含まれるFe2O3およびCaOのFe2O3/(Fe2O3+CaO)比を0.76~0.80にすることを特徴とする、請求項1に記載の焼結鉱の製造方法。
- 前記焼結配合原料に含まれるFe2O3/(Fe2O3+CaO)比を0.76~0.84に調製したFe2O3およびCaOを、前記Fe2O3およびCaO以外の焼結配合原料の造粒中の後段から添加することを特徴とする、請求項1または2に記載の焼結鉱の製造方法。
- 焼結配合原料としてその中に含まれるFe2O3およびCaOの比Fe2O3/(Fe2O3+CaO)が0.76~0.84の範囲内であるものを用いて焼結することで、低還元粉化性の焼結鉱を得ることを特徴とする、焼結鉱の粉化抑制方法。
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EP21935138.4A EP4299774A1 (en) | 2021-03-31 | 2021-11-24 | Production method and disintegration suppression method for sintered ore |
BR112023019813A BR112023019813A2 (pt) | 2021-03-31 | 2021-11-24 | Método de produção e método de supressão de desintegração para minério sinterizado |
KR1020237034115A KR20230154318A (ko) | 2021-03-31 | 2021-11-24 | 소결광의 제조 방법 및 분화 억제 방법 |
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS62185837A (ja) * | 1986-02-12 | 1987-08-14 | Sumitomo Metal Ind Ltd | 焼結原料の事前処理方法 |
JP2002371322A (ja) * | 2001-06-18 | 2002-12-26 | Sumitomo Metal Ind Ltd | 焼結鉱の製造方法 |
JP2003293045A (ja) | 2002-04-05 | 2003-10-15 | Nippon Steel Corp | 耐還元粉化性の優れた低スラグ焼結鉱の製造方法 |
JP2015129353A (ja) * | 2013-07-10 | 2015-07-16 | Jfeスチール株式会社 | 焼結鉱製造用の炭材内装造粒粒子とその製造方法 |
JP2015183289A (ja) * | 2014-03-26 | 2015-10-22 | 新日鐵住金株式会社 | 焼結鉱製造方法 |
JP2018510970A (ja) | 2015-03-17 | 2018-04-19 | コリア ユニバーシティ リサーチ アンド ビジネス ファウンデーションKorea University Research And Business Foundation | マグネタイト系焼結鉱およびその製造方法 |
JP2020158848A (ja) * | 2019-03-27 | 2020-10-01 | 株式会社神戸製鋼所 | 焼結での製鋼スラグの使用方法 |
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2021
- 2021-03-31 JP JP2021060166A patent/JP2022156458A/ja active Pending
- 2021-11-24 WO PCT/JP2021/042919 patent/WO2022208985A1/ja active Application Filing
- 2021-11-24 CN CN202180096344.5A patent/CN117062923A/zh active Pending
- 2021-11-24 EP EP21935138.4A patent/EP4299774A1/en active Pending
- 2021-11-24 KR KR1020237034115A patent/KR20230154318A/ko unknown
- 2021-11-24 BR BR112023019813A patent/BR112023019813A2/pt unknown
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2022
- 2022-01-19 TW TW111102186A patent/TWI790901B/zh active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62185837A (ja) * | 1986-02-12 | 1987-08-14 | Sumitomo Metal Ind Ltd | 焼結原料の事前処理方法 |
JP2002371322A (ja) * | 2001-06-18 | 2002-12-26 | Sumitomo Metal Ind Ltd | 焼結鉱の製造方法 |
JP2003293045A (ja) | 2002-04-05 | 2003-10-15 | Nippon Steel Corp | 耐還元粉化性の優れた低スラグ焼結鉱の製造方法 |
JP2015129353A (ja) * | 2013-07-10 | 2015-07-16 | Jfeスチール株式会社 | 焼結鉱製造用の炭材内装造粒粒子とその製造方法 |
JP2015183289A (ja) * | 2014-03-26 | 2015-10-22 | 新日鐵住金株式会社 | 焼結鉱製造方法 |
JP2018510970A (ja) | 2015-03-17 | 2018-04-19 | コリア ユニバーシティ リサーチ アンド ビジネス ファウンデーションKorea University Research And Business Foundation | マグネタイト系焼結鉱およびその製造方法 |
JP2020041222A (ja) | 2015-03-17 | 2020-03-19 | コリア ユニバーシティ リサーチ アンド ビジネス ファウンデーションKorea University Research And Business Foundation | マグネタイト系焼結鉱およびその製造方法 |
JP2020158848A (ja) * | 2019-03-27 | 2020-10-01 | 株式会社神戸製鋼所 | 焼結での製鋼スラグの使用方法 |
Non-Patent Citations (1)
Title |
---|
KASAI EIKI, SHU LENBIN, KOBAYASHI SABURO, OMORI YASUO: "Fundamental Study on the Sintering Process Using Duplex Mini-pellets", TETSU-TO-HAGANE, vol. 70, no. 6, 1 April 1984 (1984-04-01), pages 520 - 526, XP055973947 * |
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KR20230154318A (ko) | 2023-11-07 |
BR112023019813A2 (pt) | 2023-11-07 |
EP4299774A1 (en) | 2024-01-03 |
TWI790901B (zh) | 2023-01-21 |
TW202239977A (zh) | 2022-10-16 |
CN117062923A (zh) | 2023-11-14 |
JP2022156458A (ja) | 2022-10-14 |
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