JP5779839B2 - 高炉操業方法 - Google Patents
高炉操業方法 Download PDFInfo
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- JP5779839B2 JP5779839B2 JP2010080685A JP2010080685A JP5779839B2 JP 5779839 B2 JP5779839 B2 JP 5779839B2 JP 2010080685 A JP2010080685 A JP 2010080685A JP 2010080685 A JP2010080685 A JP 2010080685A JP 5779839 B2 JP5779839 B2 JP 5779839B2
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- gas
- furnace
- shaft
- blast furnace
- shaft gas
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- 238000000034 method Methods 0.000 title claims description 18
- 239000007789 gas Substances 0.000 claims description 154
- 238000007664 blowing Methods 0.000 claims description 77
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 description 33
- 238000002474 experimental method Methods 0.000 description 11
- 239000000571 coke Substances 0.000 description 8
- 230000008021 deposition Effects 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 238000004088 simulation Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000002801 charged material Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 238000005243 fluidization Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 150000003752 zinc compounds Chemical class 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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- Manufacture Of Iron (AREA)
Description
(a)羽口から吹き込む熱風の酸素富化率を下げ、ガス量を増加させる(熱流比を下げ、ガス温度を上昇させる)。
(b)羽口からの微粉炭などの燃料吹き込み量を増加させる(熱流比を下げ、ガス温度を上昇させる)。
(c)還元効率(シャフト効率)を下げ、RARを高くする。
(1)高炉のシャフト部から高炉内にシャフトガスを吹き込むにあたり、前記シャフトガスの吹き込みが水平または下向きであって、水平方向から0度以上、水平方向から45度以下の角度で吹き込むことを特徴とする高炉の操業方法。
(2)シャフトガスの吹き込みを、水平方向から15度以上、45度以下の下向きとすることを特徴とする(1)に記載の高炉の操業方法。
2 炉体(高炉)
3 羽口
4 シャフトガス吹き込み管
5 焼結鉱
6 コークス
7 振動フィーダー
8 送風(エアー)
9 送風(エアー)
10 鉄板
11 炉芯
12 レースウェイ
13 混合層
14 融着帯
15 羽口レベル
16 融着帯垂れ込み
17 シャフトガス吹き込み
18 シャフトガスの流れ
19 原料の流れ込み
a 混合層深度
b 混合層が発生しない領域
c 炉頂堆積面からの距離
θ 水平方向からの角度
Claims (2)
- 酸素富化率が10体積%以下の羽口熱風吹き込みを行う高炉で、還元材比が470kg/t以下の操業を行う高炉の操業方法であって、
高炉のシャフト部から、高炉内に、温度が800℃以上となるシャフトガスを少なくとも100Nm 3 /tの流量で吹き込むにあたり、
前記シャフトガスを100m/s以下のガス流速で吹き込み、且つ、前記シャフトガスの吹き込みが水平または下向きであって、水平方向から0度以上、水平方向から45度以下の角度で吹き込むことを特徴とする高炉の操業方法。 - シャフトガスの吹き込みを、水平方向から15度以上、45度以下の下向きとすることを特徴とする請求項1に記載の高炉の操業方法。
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JP2010080685A JP5779839B2 (ja) | 2010-03-31 | 2010-03-31 | 高炉操業方法 |
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JP2010080685A JP5779839B2 (ja) | 2010-03-31 | 2010-03-31 | 高炉操業方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011214022A JP2011214022A (ja) | 2011-10-27 |
JP5779839B2 true JP5779839B2 (ja) | 2015-09-16 |
Family
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JP2010080685A Active JP5779839B2 (ja) | 2010-03-31 | 2010-03-31 | 高炉操業方法 |
Country Status (1)
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JP (1) | JP5779839B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10493694B2 (en) | 2017-09-29 | 2019-12-03 | Honda Motor Co., Ltd. | Shaping method and shaped object |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7221123B2 (ja) * | 2019-04-22 | 2023-02-13 | 日本製鉄株式会社 | 解析対象領域の設定方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6033305A (ja) * | 1983-08-04 | 1985-02-20 | Nippon Steel Corp | 高炉操業法 |
JPS62120413A (ja) * | 1985-11-20 | 1987-06-01 | Nippon Kokan Kk <Nkk> | 高炉操業方法 |
JPH0619090B2 (ja) * | 1986-12-27 | 1994-03-16 | 日本鋼管株式会社 | 酸素高炉 |
JPS63171815A (ja) * | 1987-01-09 | 1988-07-15 | Nkk Corp | 酸素高炉 |
JPH09272904A (ja) * | 1996-02-06 | 1997-10-21 | Nkk Corp | 高炉のシミュレーション方法及びそのシミュレーション方法を用いた高炉内原料降下評価装置 |
JP2001200307A (ja) * | 2000-01-19 | 2001-07-24 | Nkk Corp | 高炉シャフト部への予熱ガス吹込み装置 |
JP4661890B2 (ja) * | 2008-03-17 | 2011-03-30 | Jfeスチール株式会社 | 高炉操業方法 |
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2010
- 2010-03-31 JP JP2010080685A patent/JP5779839B2/ja active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10493694B2 (en) | 2017-09-29 | 2019-12-03 | Honda Motor Co., Ltd. | Shaping method and shaped object |
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JP2011214022A (ja) | 2011-10-27 |
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