JP6959590B2 - 焼結鉱の製造方法 - Google Patents
焼結鉱の製造方法 Download PDFInfo
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- JP6959590B2 JP6959590B2 JP2020559715A JP2020559715A JP6959590B2 JP 6959590 B2 JP6959590 B2 JP 6959590B2 JP 2020559715 A JP2020559715 A JP 2020559715A JP 2020559715 A JP2020559715 A JP 2020559715A JP 6959590 B2 JP6959590 B2 JP 6959590B2
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- 238000004519 manufacturing process Methods 0.000 title claims description 24
- 239000002994 raw material Substances 0.000 claims description 134
- 238000005245 sintering Methods 0.000 claims description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 34
- 239000002245 particle Substances 0.000 claims description 33
- 238000005469 granulation Methods 0.000 claims description 25
- 230000003179 granulation Effects 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 25
- 150000001875 compounds Chemical class 0.000 claims description 24
- 229910052742 iron Inorganic materials 0.000 claims description 17
- 238000013329 compounding Methods 0.000 claims description 14
- 238000007664 blowing Methods 0.000 claims description 13
- 239000003575 carbonaceous material Substances 0.000 claims description 10
- 238000005507 spraying Methods 0.000 claims description 7
- 239000010410 layer Substances 0.000 description 23
- 239000000843 powder Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 230000035699 permeability Effects 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000002893 slag Substances 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000011361 granulated particle Substances 0.000 description 3
- 238000009775 high-speed stirring Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 2
- 239000000701 coagulant Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- KIZFHUJKFSNWKO-UHFFFAOYSA-M calcium monohydroxide Chemical compound [Ca]O KIZFHUJKFSNWKO-UHFFFAOYSA-M 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000002801 charged material Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000012256 powdered iron Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000001931 thermography Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/16—Sintering; Agglomerating
- C22B1/20—Sintering; Agglomerating in sintering machines with movable grates
- C22B1/205—Sintering; Agglomerating in sintering machines with movable grates regulation of the sintering process
-
- 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
- C22B1/212—Sintering; Agglomerating in tunnel furnaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/12—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in rotating drums
-
- 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
- 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
- C22B1/216—Sintering; Agglomerating in rotary furnaces
-
- 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
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- 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
-
- 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
- C22B1/244—Binding; Briquetting ; Granulating with binders organic
- C22B1/245—Binding; Briquetting ; Granulating with binders organic with carbonaceous material for the production of coked agglomerates
-
- 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
- C22B1/26—Cooling of roasted, sintered, or agglomerated ores
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
前記パレット上に装入する造粒焼結原料として、粒径150μm以下の微粉鉄鉱石を10mass%以上含む前記焼結配合原料を造粒機にて造粒する際に、その造粒機内に水蒸気を吹き込むことにより、該焼結配合原料の当該造粒機内への装入前の当初温度よりも10℃以上高い温度に加熱すると共に調湿した造粒焼結原料を用いることを特徴とする焼結鉱の製造方法である。
(1)前記造粒焼結原料は、45℃以上70℃未満の温度に加熱されたものであること、
(2)前記造粒焼結原料は、6〜10mass%の目標水分量に調湿すること、
(3)造粒後の温度が70℃を超える前記造粒焼結原料は、該造粒焼結原料の水分量が70℃以下での目標水分量よりも、0.5mass%〜3.0mass%高いものにすること、
(4)前記造粒機での水蒸気吹き込みに際しては、該水蒸気を下記比率となるように前記焼結配合原料に向けて直接吹き付けること、
記
W50/Wm≦0.8
ただし、
W50:水蒸気の吹き付けによる昇温幅が最高温度の50%以上となる範囲の幅
Wm:配合原料が存在する幅
(5)前記造粒機での水蒸気吹き込みに際しては、該水蒸気を下記比率となるように前記焼結配合原料に向けて直接吹き付けること、
記
W50/Wm≦0.6
ただし、
W50:水蒸気の吹き付けによる昇温幅が最高温度の50%以上となる範囲の幅
Wm:配合原料が存在する幅
が好ましい。
また、吹き込まれた水蒸気の熱は、ドラムミキサーのドラム内面を介さずに、配合原料に直接伝熱させるようにすることが望ましい。
記
W50/Wm≦0.8
ただし、
W50:水蒸気の吹き付けによる昇温幅が最高温度の50%以上となる範囲の幅
Wm:配合原料が存在する幅
2 造粒焼結原料
3 焼結機パレット
Claims (5)
- 焼結機の原料給鉱部から循環移動するパレット上に、少なくとも鉄鉱石、炭材、副原料を含む焼結配合原料を造粒してなる造粒焼結原料を装入して装入層を形成し、その後、点火炉を使って前記装入層の炭材に点火する一方、パレット下方のウインドボックスにて前記装入層上のガスを吸引して該装入層中に導入することにより、前記炭材を燃焼させて焼結鉱を製造する方法において、
前記パレット上に装入する造粒焼結原料として、粒径150μm以下の微粉鉄鉱石を10mass%以上含む前記焼結配合原料を造粒機にて造粒する際に、その造粒機内に3kg/t−s以上の水蒸気を吹き込むことにより、該焼結配合原料の当該造粒機内への装入前の当初温度よりも10℃以上高い温度に加熱すると共に調湿した造粒焼結原料を用い、
前記焼結配合原料の当該造粒機内への装入前の当初温度は、大気温度〜35℃の範囲であり、
前記造粒焼結原料は、6〜10mass%の目標水分量に調湿することを特徴とする焼結鉱の製造方法。 - 前記造粒焼結原料は、45℃以上70℃未満の温度に加熱されたものであ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。
- 造粒後の温度が70℃を超える前記造粒焼結原料は、該造粒焼結原料の水分量が70℃以下での目標水分量よりも、0.5mass%〜3.0mass%高いものに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。
- 前記造粒機での水蒸気吹き込みに際しては、該水蒸気を下記比率となるように前記焼結配合原料に向けて直接吹き付けることを特徴とする、請求項1〜3のいずれか1に記載の焼結鉱の製造方法。
記
W50/Wm≦0.8
ただし、
W50:水蒸気による昇温幅が最高温度の50%以上となる範囲の幅
Wm:配合原料が存在する幅 - 前記造粒機での水蒸気吹き込みに際しては、該水蒸気を下記比率となるように前記焼結配合原料に向けて直接吹き付けることを特徴とする請求項1〜3のいずれか1に記載の焼結鉱の製造方法。
記
W50/Wm≦0.6
ただし、
W50:水蒸気の吹き付けによる昇温幅が最高温度の50%以上となる範囲の幅
Wm:配合原料が存在する幅
Applications Claiming Priority (3)
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JP2018229940 | 2018-12-07 | ||
JP2018229940 | 2018-12-07 | ||
PCT/JP2019/033260 WO2020115959A1 (ja) | 2018-12-07 | 2019-08-26 | 焼結鉱の製造方法 |
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JPWO2020115959A1 JPWO2020115959A1 (ja) | 2021-09-02 |
JP6959590B2 true JP6959590B2 (ja) | 2021-11-02 |
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JP2020559715A Active JP6959590B2 (ja) | 2018-12-07 | 2019-08-26 | 焼結鉱の製造方法 |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP3892744B1 (ja) |
JP (1) | JP6959590B2 (ja) |
KR (2) | KR20210072807A (ja) |
CN (1) | CN113166842A (ja) |
AU (1) | AU2019391453B2 (ja) |
TW (1) | TWI729473B (ja) |
WO (1) | WO2020115959A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2022039966A (ja) * | 2020-08-28 | 2022-03-10 | Jfeスチール株式会社 | 焼結鉱の製造方法および焼結鉱の製造設備 |
JP7533404B2 (ja) | 2021-09-13 | 2024-08-14 | Jfeスチール株式会社 | 造粒焼結原料の製造装置および製造方法 |
CN114480839B (zh) * | 2021-12-24 | 2024-07-23 | 武汉悟拓科技有限公司 | 基于粉体燃料静电分散的烧结混合料磁化水造粒工艺 |
WO2023210411A1 (ja) * | 2022-04-28 | 2023-11-02 | Jfeスチール株式会社 | 造粒装置、造粒焼結原料の製造方法および焼結鉱の製造方法 |
Family Cites Families (12)
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JPS58120749A (ja) * | 1982-01-14 | 1983-07-18 | Kawasaki Steel Corp | 焼結副原料の添加方法 |
JPS59229423A (ja) * | 1983-06-09 | 1984-12-22 | Sumitomo Metal Ind Ltd | 焼結鉱の製造方法 |
JP4022941B2 (ja) * | 1997-06-27 | 2007-12-19 | 住友金属工業株式会社 | 還元鉄製造原料の成形方法 |
JP2007169780A (ja) | 2005-11-25 | 2007-07-05 | Jfe Steel Kk | 焼結鉱の製造方法 |
AU2009323283B2 (en) * | 2008-12-03 | 2013-03-07 | Jfe Steel Corporation | Method for producing sintered ore and sintering machine |
JP4837799B2 (ja) * | 2009-03-16 | 2011-12-14 | 新日本製鐵株式会社 | 焼結鉱の製造方法 |
JP5891761B2 (ja) | 2011-12-09 | 2016-03-23 | Jfeスチール株式会社 | 鉱石事前処理方法 |
CN107304461B (zh) * | 2016-04-25 | 2019-04-19 | 中冶长天国际工程有限责任公司 | 用于烧结生产的强力混合工艺及其装置 |
JP6686974B2 (ja) * | 2016-06-22 | 2020-04-22 | Jfeスチール株式会社 | 焼結鉱の製造方法 |
WO2018142331A1 (en) * | 2017-02-03 | 2018-08-09 | Kashyap Rakesh | System and method for maintaining optimum moisture content in granulated mix |
WO2019167888A1 (ja) * | 2018-02-28 | 2019-09-06 | Jfeスチール株式会社 | 造粒焼結原料の製造方法 |
CN108546821A (zh) * | 2018-05-09 | 2018-09-18 | 攀钢集团攀枝花钢钒有限公司 | 烧结混合料增湿点火烧结方法 |
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- 2019-08-26 KR KR1020217014148A patent/KR20210072807A/ko not_active IP Right Cessation
- 2019-08-26 KR KR1020237036712A patent/KR20230153516A/ko active Application Filing
- 2019-08-26 JP JP2020559715A patent/JP6959590B2/ja active Active
- 2019-08-26 EP EP19891967.2A patent/EP3892744B1/en active Active
- 2019-08-26 WO PCT/JP2019/033260 patent/WO2020115959A1/ja unknown
- 2019-08-26 CN CN201980081042.3A patent/CN113166842A/zh active Pending
- 2019-08-26 AU AU2019391453A patent/AU2019391453B2/en active Active
- 2019-08-27 TW TW108130698A patent/TWI729473B/zh active
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EP3892744B1 (en) | 2022-12-28 |
AU2019391453B2 (en) | 2022-09-29 |
WO2020115959A1 (ja) | 2020-06-11 |
EP3892744A1 (en) | 2021-10-13 |
TW202022128A (zh) | 2020-06-16 |
AU2019391453A1 (en) | 2021-06-03 |
BR112021009753A2 (pt) | 2021-08-17 |
TWI729473B (zh) | 2021-06-01 |
KR20230153516A (ko) | 2023-11-06 |
EP3892744A4 (en) | 2021-10-13 |
JPWO2020115959A1 (ja) | 2021-09-02 |
KR20210072807A (ko) | 2021-06-17 |
CN113166842A (zh) | 2021-07-23 |
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