JP4555666B2 - 高炉吹き込み微粉炭の燃焼促進方法 - Google Patents
高炉吹き込み微粉炭の燃焼促進方法 Download PDFInfo
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- JP4555666B2 JP4555666B2 JP2004344036A JP2004344036A JP4555666B2 JP 4555666 B2 JP4555666 B2 JP 4555666B2 JP 2004344036 A JP2004344036 A JP 2004344036A JP 2004344036 A JP2004344036 A JP 2004344036A JP 4555666 B2 JP4555666 B2 JP 4555666B2
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- pulverized coal
- iron oxide
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- blast furnace
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Description
すなわち、(2)式で燃焼したCO2が(3)式でCと反応してCOとなる。
2C+O2=2CO (1)
C+O2=CO2 (2)
C+CO2=2CO (3)
FeOx+XC=Fe+XCO (4)
但し、Xは係数を示す。
3Fe2O3=2Fe3O4+O (5)
但し、η=1−(100/燃焼後石炭中灰分(質量%)−1)/(100/燃焼前石炭灰分(質量%)−1)
また、少なすぎると促進効果が不足し、燃焼率が十分に向上しない。
2…プラズマアークヒーター
3…ランス(ステンレス製)
4…採取孔
5…耐火被覆(ジルコニア)
Claims (1)
- 高炉に吹き込む微粉炭に、平均粒径が25μm以下である酸化鉄粉体を、微粉炭に対して質量比で、0.2〜15%となるように、混合し、混合した粉体をランスから高炉に吹き込むことを特徴とする高炉吹き込み微粉炭の燃焼促進方法。
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JP2004344036A JP4555666B2 (ja) | 2004-11-29 | 2004-11-29 | 高炉吹き込み微粉炭の燃焼促進方法 |
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JP2004344036A JP4555666B2 (ja) | 2004-11-29 | 2004-11-29 | 高炉吹き込み微粉炭の燃焼促進方法 |
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JP2006152369A JP2006152369A (ja) | 2006-06-15 |
JP4555666B2 true JP4555666B2 (ja) | 2010-10-06 |
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Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0551612A (ja) * | 1991-02-07 | 1993-03-02 | Sumitomo Metal Ind Ltd | 高炉羽口粉体吹き込み方法 |
JPH06220510A (ja) * | 1993-01-28 | 1994-08-09 | Sumitomo Metal Ind Ltd | 高炉操業方法 |
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