JP2004204317A - Water-cooled wall structure for blast furnace - Google Patents

Water-cooled wall structure for blast furnace Download PDF

Info

Publication number
JP2004204317A
JP2004204317A JP2002376323A JP2002376323A JP2004204317A JP 2004204317 A JP2004204317 A JP 2004204317A JP 2002376323 A JP2002376323 A JP 2002376323A JP 2002376323 A JP2002376323 A JP 2002376323A JP 2004204317 A JP2004204317 A JP 2004204317A
Authority
JP
Japan
Prior art keywords
cooling
furnace
water
blast furnace
cooled
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.)
Pending
Application number
JP2002376323A
Other languages
Japanese (ja)
Inventor
Shigeji Matsuyama
Yuuya Tanaka
Tetsumasa Yuge
哲応 弓削
成志 松山
優冶 田中
Original Assignee
Jfe Steel Kk
Jfeスチール株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jfe Steel Kk, Jfeスチール株式会社 filed Critical Jfe Steel Kk
Priority to JP2002376323A priority Critical patent/JP2004204317A/en
Publication of JP2004204317A publication Critical patent/JP2004204317A/en
Pending legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To improve the retentivity of castable refractories on a blast furnace wall and extend the service life. <P>SOLUTION: The water-cooled wall structure for the blast furnace is composed of: at least three or more of cooling plates 1a, 1b and 1c successively arranged at the same level in the cooling plates for cooling the furnace wall in the blast furnace; at least two or more of cooling-water pipings 2a and 2b disposed so as to meander among three or more of cooling plates 1a, 1b and 1c; and the castable refractory sprayed on three or more of cooling plates 1a, 1b and 1c and two or more of cooling-water pipings 2a and 2b, and inlets 5a and 5b and outlets 6a and 6b of the cooling-water pipings 2a and 2b, are supported with an iron shell 3. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a water-cooled furnace wall structure of a blast furnace.
[0002]
[Prior art]
In a hard metallurgical furnace such as a blast furnace, it is necessary to prevent erosion from inside the furnace by cooling the refractory on the furnace wall and the furnace bottom, and to extend the life of the furnace body. Conventionally, various devices have been proposed as cooling methods for furnace bodies of blast furnaces and the like, and they have been put to practical use, but a cooling method using a cooling plate is one of them. Widely used for
[0003]
The cooling board described above has a size of, for example, about 400 mm in width × 600 mm in length × 70 mm in thickness, has a cooling water passage therein, and is fixed to a housing provided on a steel shell. Has become.
[0004]
Such cooling plates are arranged in a staggered manner in the height direction of the blast furnace wall in 30 to 50 stages, and 36 to 52 sheets in each stage, and the spacing between adjacent cooling plates in the same stage is 1 to 1. It is about 5 m.
[0005]
Precast refractories (refractory bricks) are initially used between the cooling boards arranged in this way, but as the blast furnace operation time increases, the refractory bricks are partially damaged. Become missing. If the missing portion is left as it is, there is a problem that the cooling plate is melted down, the cooling capacity of the furnace wall is reduced, and the life of the furnace body is shortened.
[0006]
Therefore, by using the cooling board also serving as a support member for the refractory, it is possible to spray an irregular refractory from the inside of the furnace with a spray device to the part where the refractory brick is missing, or to remove the irregular refractory from the steel shell. Repair is performed by pouring. However, irregular refractories have a low holding power and a short service life, and at the time of spraying, about 20% of the refractories flow down during spraying, resulting in loss of spraying of the refractories. There is a problem that is large.
[0007]
Therefore, various construction methods have been proposed for improving the holding power of the irregular-shaped refractory and reducing the spraying loss when the blast furnace wall is repaired (for example, Patent Document 1).
[0008]
[Patent Document 1]
JP-B-57-36322 [0009]
[Problems to be solved by the invention]
However, the method for repairing a blast furnace wall disclosed in Patent Document 1 has the following problems.
[0010]
A heat-resistant wire mesh is fixed along the height direction to the steel shell of the worn part of the blast furnace furnace wall, and the refractory is sprayed on the worn part. In the position where the refractory is deteriorated due to high heat, the refractory tends to fall under its own weight, and the holding power is not sufficient.
[0011]
In addition, the effect of reducing the blowing loss when spraying irregular shaped refractories can hardly be expected.
[0012]
The present invention has been made in order to solve the above-described problems of the prior art, and it is possible to increase the holding power, and also to propose a blowing loss of an amorphous refractory, a water-cooled furnace of a blast furnace. It is intended to provide a wall structure.
[0013]
[Means for Solving the Problems]
The water-cooled furnace wall structure of a blast furnace according to the present invention is configured such that at least three or more cooling disks connected in the same stage among the cooling disks for cooling the blast furnace wall are stitched between the three or more cooling disks. An inlet for the cooling water pipe, comprising at least two or more cooling water pipes with anchors to be provided, and three or more cooling boards and an irregular refractory sprayed on the two or more cooling water pipes; And the outlet is made to be supported by steel skin.
[0014]
In addition, a block-shaped pipe support material in which a cooling water pipe intersects and penetrates inside at least a portion where at least two or more cooling water pipes with anchors arranged to sew the cooling board intersects is arranged. It was done.
[0015]
Further, the pipe support material is fixedly held on the furnace shell.
[0016]
An anchor is provided on the surface of the pipe support material.
[0017]
In the water-cooled furnace wall structure of the blast furnace according to the present invention, it is possible to support irregular shaped refractories sprayed by at least two or more cooling water pipes with anchors arranged so as to sew between three or more cooling boards. Since it is possible to increase the holding power of the irregular-shaped refractory, it is possible to water-cool the irregular-shaped refractory after being blown by the cooling water pipe, so that the life of the furnace wall can be extended.
[0018]
In addition, since the blowing of the irregular shaped refractory can be received by the cooling water pipe, the blowing loss of the irregular shaped refractory can be reduced.
[0019]
The reason why the number of cooling boards is three or more is that water pipes can be stably arranged. The reason why the number of cooling water pipes is two or more is that cooling water pipes are located above and below the cooling board. Thereby, uniform cooling of the sprayed irregular shaped refractory can be achieved.
[0020]
Further, a block-shaped pipe support material in which the cooling water pipe intersects and penetrates inside is arranged at a portion where the cooling water pipe intersects, and the pipe support material is fixedly held to the furnace shell. Thereby, the furnace wall structure can be made stronger.
[0021]
Further, the pipe support material functions as a small cooling board, and the life of the irregular-shaped refractory can be extended.
[0022]
Further, by providing an anchor on the surface of the pipe support material, it is possible to further increase the holding force of the irregular-shaped refractory.
[0023]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view of a water-cooled furnace wall structure of a blast furnace according to an embodiment of the present invention, wherein (a) is a front view viewed from the inside of the furnace, and (b) is a plan view.
[0024]
The water-cooled furnace wall structure of the blast furnace will be described in the case of three cooling boards. The water-cooled furnace wall structure of this blast furnace has three cooling boards 1a, 1b and 1c, and two cooling water pipes 2a and 2b that are piped so as to sew between the three cooling boards 1a, 1b and 1c. It is composed of irregular shaped refractories sprayed on them.
[0025]
The wall structure of the water-cooled furnace of the blast furnace will be described in detail. Outside the cooling plates 1a and 1c disposed at both ends, supply / drainage headers -4a and 4b supported by the steel shell 3 are provided.
[0026]
A water supply port 5a to the cooling water pipe 2a is provided in the header 4a, and the cooling water pipe 2a is sequentially provided from the header 4a to the upper surface side of the cooling plate 1a, the lower surface side of the cooling plate 1b, and the upper surface of the cooling plate 1c. A drain port 6a to the cooling water pipe 2a is provided in the header 4b.
[0027]
On the other hand, a water supply port 5b to the cooling water pipe 2b is provided in the header 4b, and the cooling water pipe 2b is sequentially provided from the header 4b to the lower surface side of the cooling plate 1c, the upper surface side of the cooling plate 1b, and the cooling plate 1a. And a drain port 6b of the cooling water pipe 2b is provided in the header-4a.
[0028]
A block-shaped pipe support member 8 supported by bolts 7 on a steel shell 3 is disposed at the intersection of the cooling water pipes 2a and 2b between the cooling water discs 1a and 1b and between the cooling discs 1b and 1c. Both pipes are supported and serve as small cooling boards. Both the pipes 2a and 2b and the support member 8 are provided with anchors 9 for supporting the sprayed irregular refractory, so that the irregular refractory does not easily fall off.
[0029]
Since the water-cooled furnace wall structure of the blast furnace according to the present invention is configured as described above, the life of the furnace wall can be extended, and the blowing loss of the irregular-shaped refractory can be reduced.
[0030]
【The invention's effect】
According to the present invention, since the furnace wall can be cooled by the cooling water pipe and the irregular refractory sprayed by the cooling water pipe can be supported, the life of the furnace wall can be greatly extended.
[0031]
Further, since the cooling water pipe is provided, the blowing loss of the irregular-shaped refractory is reduced.
[Brief description of the drawings]
FIG. 1 is an explanatory view of an embodiment of a water-cooled furnace wall structure of a blast furnace according to the present invention, wherein (a) is a front view viewed from the inside of the furnace, and (b) is a plan view.
[Explanation of symbols]
1a, 1b, 1c Cooling boards 2a, 2b Cooling water piping 3 Steel shells 4a, 4b
5a, 5b Water supply port 6a, 6b Drain port 7 Bolt 8 Piping support material 9 Anchor

Claims (4)

  1. At least three or more cooling boards connected in the same stage among the cooling boards for cooling the blast furnace wall, and at least two or more anchors arranged so as to sew between the three or more cooling boards. It is composed of a cooling water pipe, an irregular refractory sprayed on the three or more cooling boards and the two or more cooling water pipes, and an inlet and an outlet of the cooling water pipe are supported by a steel shell. A water-cooled furnace wall structure for a blast furnace, characterized in that:
  2. At least two or more cooling water pipes with anchors arranged so as to sew the cooling board intersect with a block-shaped pipe support material in which the cooling water pipes intersect and penetrate inside. The water-cooled furnace wall structure of a blast furnace according to claim 1, wherein:
  3. 3. The wall structure of a water-cooled furnace of a blast furnace according to claim 2, wherein said pipe support material is fixedly held on a furnace shell.
  4. 4. The water-cooled furnace wall structure of a blast furnace according to claim 2, wherein an anchor is provided on a surface of the pipe support material.
JP2002376323A 2002-12-26 2002-12-26 Water-cooled wall structure for blast furnace Pending JP2004204317A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002376323A JP2004204317A (en) 2002-12-26 2002-12-26 Water-cooled wall structure for blast furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002376323A JP2004204317A (en) 2002-12-26 2002-12-26 Water-cooled wall structure for blast furnace

Publications (1)

Publication Number Publication Date
JP2004204317A true JP2004204317A (en) 2004-07-22

Family

ID=32813815

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002376323A Pending JP2004204317A (en) 2002-12-26 2002-12-26 Water-cooled wall structure for blast furnace

Country Status (1)

Country Link
JP (1) JP2004204317A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010174317A (en) * 2009-01-28 2010-08-12 Jfe Steel Corp Cooling structure of furnace body of blast furnace
CN102997673A (en) * 2012-11-09 2013-03-27 江苏熙友磁电科技有限公司 Anti-collision section of smelting furnace
CN103484587A (en) * 2013-09-30 2014-01-01 天津二十冶建设有限公司 Method for replacing cooling wall of blast furnace with material
KR101461813B1 (en) 2013-07-25 2014-11-13 주식회사 포스코 Marking plate for installing of assistance cooling plate and Method for installing of assistance cooling plate with the same
CN104236313A (en) * 2014-10-10 2014-12-24 上海宝钢铸造有限公司 Transverse staggered arrangement method for blooming furnace cooling walls

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010174317A (en) * 2009-01-28 2010-08-12 Jfe Steel Corp Cooling structure of furnace body of blast furnace
CN102997673A (en) * 2012-11-09 2013-03-27 江苏熙友磁电科技有限公司 Anti-collision section of smelting furnace
KR101461813B1 (en) 2013-07-25 2014-11-13 주식회사 포스코 Marking plate for installing of assistance cooling plate and Method for installing of assistance cooling plate with the same
CN103484587A (en) * 2013-09-30 2014-01-01 天津二十冶建设有限公司 Method for replacing cooling wall of blast furnace with material
CN104236313A (en) * 2014-10-10 2014-12-24 上海宝钢铸造有限公司 Transverse staggered arrangement method for blooming furnace cooling walls
CN104236313B (en) * 2014-10-10 2016-02-17 上海宝钢铸造有限公司 The laterally staggered method of iron-smelting furnace cooling wall

Similar Documents

Publication Publication Date Title
EP1756320B1 (en) Heat exchanger system used in steel making
US6614831B2 (en) Mounting arrangement for auxiliary burner or lance
KR101349124B1 (en) Direct smelting plant
US6289035B1 (en) Mounting arrangement for auxiliary burner or lance
US3843106A (en) Furnace
US5904893A (en) Plate cooler for metallurgical furnaces, blast furnaces, direct reduction reactors and gassing units provided with a refractory lining particularly for the iron and steel industry
US7465422B2 (en) Cooling element
CN1057601C (en) Cooling ststem for furnace roof having removable delta
CN1246662C (en) Water-cooling panel for furnace wall and furnace cover of arc furnace
US6890479B2 (en) System and method for steel making
CN101078515B (en) Improved burner panel and related method
EP2861771B1 (en) Device for recovering heat and fumes from slag resulting from the steel production cycle
EP0375657A1 (en) Melting furnace
US7824604B2 (en) Methods of implementing a water-cooling system into a burner panel and related apparatuses
JP4064387B2 (en) Furnace water cooling jacket
CN1537174A (en) Method for melting and decarburization of iron carbon alloy
US5662860A (en) Apparatus for producing molten pig iron by direct reduction
US7504065B2 (en) Direct smelting plant and process
RU2144570C1 (en) Cooling plate for shaft furnace
JP4498410B2 (en) Water-cooled jacket structure for inspection hole of flash furnace
JP2006029775A (en) Grate panel, incineration grate and waste incineration plant
KR101277112B1 (en) Cooling element and method for manufacturing the same
EP2409101B1 (en) Steel production facility
CN103276130A (en) Maintenance method for air leakage from pipeline of hot-air system of blast furnace
CN102912078B (en) The Multifunctional arc furnace system of minimumization power consumption and the processing procedure of manufacture product made from steel

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050928

RD01 Notification of change of attorney

Effective date: 20060921

Free format text: JAPANESE INTERMEDIATE CODE: A7421

A977 Report on retrieval

Effective date: 20070315

Free format text: JAPANESE INTERMEDIATE CODE: A971007

A131 Notification of reasons for refusal

Effective date: 20070424

Free format text: JAPANESE INTERMEDIATE CODE: A131

A02 Decision of refusal

Effective date: 20070904

Free format text: JAPANESE INTERMEDIATE CODE: A02