JP4807099B2 - 高炉操業方法 - Google Patents
高炉操業方法 Download PDFInfo
- Publication number
- JP4807099B2 JP4807099B2 JP2006045084A JP2006045084A JP4807099B2 JP 4807099 B2 JP4807099 B2 JP 4807099B2 JP 2006045084 A JP2006045084 A JP 2006045084A JP 2006045084 A JP2006045084 A JP 2006045084A JP 4807099 B2 JP4807099 B2 JP 4807099B2
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- JP
- Japan
- Prior art keywords
- partially reduced
- ore
- blast furnace
- blowing
- lance
- 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.)
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- 238000000034 method Methods 0.000 title claims description 25
- 230000009467 reduction Effects 0.000 claims description 69
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 48
- 239000000446 fuel Substances 0.000 claims description 48
- 238000007664 blowing Methods 0.000 claims description 44
- 229910052742 iron Inorganic materials 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 6
- 239000004575 stone Substances 0.000 claims 1
- 230000001603 reducing effect Effects 0.000 description 33
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 26
- 238000002474 experimental method Methods 0.000 description 22
- 239000003245 coal Substances 0.000 description 19
- 239000000571 coke Substances 0.000 description 18
- 239000000463 material Substances 0.000 description 18
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 16
- 239000007789 gas Substances 0.000 description 15
- 239000000295 fuel oil Substances 0.000 description 13
- 230000008859 change Effects 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 9
- 239000003345 natural gas Substances 0.000 description 9
- 230000035699 permeability Effects 0.000 description 9
- 239000002245 particle Substances 0.000 description 8
- 239000002893 slag Substances 0.000 description 8
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 238000001465 metallisation Methods 0.000 description 5
- 238000009423 ventilation Methods 0.000 description 5
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 4
- 230000009257 reactivity Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005259 measurement Methods 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
- 239000002994 raw material Substances 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003746 feather Anatomy 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 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 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010742 number 1 fuel oil Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000012254 powdered material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Manufacture Of Iron (AREA)
- Blast Furnaces (AREA)
Description
(1)高炉の羽口部から液体または気体である補助燃料と部分的に還元された鉄鉱石とを、前記羽口に接続したブローパイプに挿入されたランスを介して吹き込む高炉操業であって、前記鉄鉱石の還元率が40%以上、80%以下であり、前記ランスが内管と外管からなる2重管構造を有し、前記内管から前記鉄鉱石を、前記外管から前記補助燃料を吹き込むことを特徴とする高炉操業方法。
2 コークス装入孔
3 排ガス流出孔
4 羽口
5 ブローパイプ
6 ランス
6a ランス
6b ランス
6c 内管
6d 外管
7 レースウェイ
8 サンプリング位置
Claims (1)
- 高炉の羽口部から液体または気体である補助燃料と部分的に還元された鉄鉱石とを、前記羽口に接続したブローパイプに挿入されたランスを介して吹き込む高炉操業であって、前記鉄鉱石の還元率が40%以上、80%以下であり、前記ランスが内管と外管からなる2重管構造を有し、前記内管から前記鉄鉱石を、前記外管から前記補助燃料を吹き込むことを特徴とする高炉操業方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006045084A JP4807099B2 (ja) | 2006-02-22 | 2006-02-22 | 高炉操業方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006045084A JP4807099B2 (ja) | 2006-02-22 | 2006-02-22 | 高炉操業方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007224345A JP2007224345A (ja) | 2007-09-06 |
JP4807099B2 true JP4807099B2 (ja) | 2011-11-02 |
Family
ID=38546421
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006045084A Active JP4807099B2 (ja) | 2006-02-22 | 2006-02-22 | 高炉操業方法 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4807099B2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7130898B2 (ja) * | 2019-03-28 | 2022-09-06 | 株式会社神戸製鋼所 | 高炉の操業方法 |
JP7310858B2 (ja) * | 2020-09-25 | 2023-07-19 | Jfeスチール株式会社 | 高炉操業方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61153216A (ja) * | 1984-12-27 | 1986-07-11 | Kawasaki Steel Corp | 高炉内への粉体吹き込み方法 |
JPH06172826A (ja) * | 1992-12-09 | 1994-06-21 | Nippon Steel Corp | 高炉操業方法 |
JPH09157712A (ja) * | 1995-12-04 | 1997-06-17 | Nippon Steel Corp | 高炉における微粉炭および紛状鉄源の同時吹込み操業方法 |
-
2006
- 2006-02-22 JP JP2006045084A patent/JP4807099B2/ja active Active
Also Published As
Publication number | Publication date |
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JP2007224345A (ja) | 2007-09-06 |
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