JP2012172167A5 - - Google Patents

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JP2012172167A5
JP2012172167A5 JP2011033014A JP2011033014A JP2012172167A5 JP 2012172167 A5 JP2012172167 A5 JP 2012172167A5 JP 2011033014 A JP2011033014 A JP 2011033014A JP 2011033014 A JP2011033014 A JP 2011033014A JP 2012172167 A5 JP2012172167 A5 JP 2012172167A5
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Prior art keywords
ore
coke
ferro
layer
batches
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JP2011033014A
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Japanese (ja)
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JP2012172167A (en
JP5299446B2 (en
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Claims (3)

高炉内にコークス層と鉱石層とを形成させて操業する高炉操業方法において、
前記鉱石層の厚さ／（前記鉱石層の厚さ＋前記コークス層の厚さ）である鉱石層厚比を炉半径方向で変更する操業を行う際に、前記鉱石層を２バッチ以上に分割した複数バッチの鉱石層として形成し、
前記複数バッチの鉱石層の炉半径方向位置がそれぞれ異なり、
前記複数バッチの鉱石層の内、少なくとも１バッチの鉱石層であって、前記鉱石層厚比が相対的に大きい炉半径方向位置の鉱石層中にフェロコークスを混合し、かつ少なくとも別の１バッチの鉱石層中にフェロコークスを混合しないことを特徴とするフェロコークスを用いた高炉操業方法。 In the blast furnace operation method in which a coke layer and an ore layer are formed in the blast furnace,
Dividing the ore layer into two or more batches when the ore layer thickness ratio (the thickness of the ore layer + the thickness of the coke layer) is changed in the furnace radial direction. Formed as multiple batches of ore layers,
The furnace radial direction positions of the batches of ore layers are different from each other,
Among the plurality of batches of ore layers, at least one batch of ore layers , the ferrocoke is mixed in the ore layer at a radial position of the furnace having a relatively large ore layer thickness ratio , and at least another one batch A blast furnace operating method using ferro-coke, characterized in that no ferro-coke is mixed in the ore layer. 前記鉱石層中の前記フェロコークスが、前記鉱石に対して、１質量％以上の混合比率を有することを特徴とする請求項１に記載のフェロコークスを用いた高炉操業方法。 The ferro-coke operation method using ferro-coke according to claim 1, wherein the ferro-coke in the ore layer has a mixing ratio of 1% by mass or more with respect to the ore. 前記フェロコークスの鉄分含有量が、１０〜４０質量％であることを特徴とする請求項１または請求項２に記載のフェロコークスを用いた高炉操業方法。 The iron content of ferro-coke, blast furnace operation method using a ferro coke of claim 1 or請 Motomeko 2, characterized in that 10 to 40 wt%.
JP2011033014A 2011-02-18 2011-02-18 Blast furnace operation method using ferro-coke Active JP5299446B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011033014A JP5299446B2 (en) 2011-02-18 2011-02-18 Blast furnace operation method using ferro-coke

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011033014A JP5299446B2 (en) 2011-02-18 2011-02-18 Blast furnace operation method using ferro-coke

Publications (3)

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JP2012172167A JP2012172167A (en) 2012-09-10
JP2012172167A5 true JP2012172167A5 (en) 2013-03-21
JP5299446B2 JP5299446B2 (en) 2013-09-25

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JP2011033014A Active JP5299446B2 (en) 2011-02-18 2011-02-18 Blast furnace operation method using ferro-coke

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014224286A (en) * 2013-05-15 2014-12-04 新日鐵住金株式会社 Method for operating blast furnace
KR101668584B1 (en) * 2013-09-26 2016-10-21 제이에프이 스틸 가부시키가이샤 Method for charging raw materials into blast furnace
JP6260288B2 (en) * 2014-01-16 2018-01-17 新日鐵住金株式会社 Raw material charging method for bell-less blast furnace
CN106636504B (en) * 2016-11-11 2018-09-18 攀钢集团西昌钢钒有限公司 The method for improving schreyerite blast furnace gas utilization rate
JP6638764B2 (en) * 2017-06-26 2020-01-29 Ｊｆｅスチール株式会社 Blast furnace operation method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63210207A (en) * 1987-02-25 1988-08-31 Nkk Corp Method for operating blast furnace
JPH08134517A (en) * 1994-11-07 1996-05-28 Kawasaki Steel Corp Operation of blast furnace
JP4556524B2 (en) * 2004-07-16 2010-10-06 Ｊｆｅスチール株式会社 Blast furnace operation method
JP4899726B2 (en) * 2006-08-31 2012-03-21 Ｊｆｅスチール株式会社 Blast furnace operation method
JP4998692B2 (en) * 2006-10-31 2012-08-15 Ｊｆｅスチール株式会社 Blast furnace operation method when using ferro-coke
JP2011162845A (en) * 2010-02-10 2011-08-25 Jfe Steel Corp Method for operating blast furnace with the use of ferrocoke

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