JPH073321A - Structure of constricted part in refining furnace - Google Patents
Structure of constricted part in refining furnaceInfo
- Publication number
- JPH073321A JPH073321A JP16547093A JP16547093A JPH073321A JP H073321 A JPH073321 A JP H073321A JP 16547093 A JP16547093 A JP 16547093A JP 16547093 A JP16547093 A JP 16547093A JP H073321 A JPH073321 A JP H073321A
- Authority
- JP
- Japan
- Prior art keywords
- brick
- furnace
- constricted part
- refining furnace
- lining
- 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
Links
- 238000007670 refining Methods 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 239000011449 brick Substances 0.000 abstract description 38
- 238000007796 conventional method Methods 0.000 abstract description 6
- 238000005336 cracking Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000009628 steelmaking Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は精錬炉絞り部用内張煉瓦
の亀裂発生防止、即ち内張煉瓦の脱落を防止し、耐用寿
命を延命する精錬炉絞り部構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refining furnace constriction part structure for preventing cracking of an inner brick for a refining furnace constriction part, that is, preventing the refining brick from falling off and extending the service life thereof.
【０００２】[0002]
【従来の技術】現在の転炉絞り部用内張れんがとして
は、縦断面がほぼ平行四辺形状で、背面に鉄板ケースを
一体に装着したＭｇＯ−Ｃれんがが使用され、その鉄板
ケースに取付けられたフックを、あらかじめパーマれん
がの内側に支持金物を介して周設された丸鋼にひっかけ
て脱落防止構造としている。そのため張りかえ時、薄く
残った内張れんがを解体機を用いて除去するとき、パー
マれんがまで解体しているのが現状である。2. Description of the Related Art As a current lining brick for a narrowed portion of a converter, a MgO-C brick having a substantially parallelogram vertical cross section and an iron plate case integrally attached to the back surface is used and is attached to the iron plate case. The hooks are hooked on the round steel that has been installed around the inside of the perm bricks through the support metal in advance to make it a structure that prevents falling off. Therefore, at the time of refilling, when the remaining thin lined bricks are removed using a demolition machine, the permanent bricks are currently dismantled.
【０００３】[0003]
（１）鉄皮内側に所要の間隔をおいて丸鋼を周設するに
は、施工が煩雑で長時間を要するのみならず、余分な資
材を必要とする。(1) In order to circulate round steel at a required interval inside the iron shell, not only is the construction complicated and takes a long time, but also an extra material is required.
【０００４】（２）前述の如く、従来構造では補修・解
体時にパーマれんがも同時に解体しており、パーマれん
がの補修（巻変え）費用を要し、コスト高となることは
勿論、休炉期間が長くなる等の欠陥がある。(2) As described above, in the conventional structure, the perm bricks are also dismantled at the same time when repairing and dismantling, which requires repairing (rewinding) of the perm bricks, which of course results in high costs and, of course, the decommissioning period. There is a defect such as a longer length.
【０００５】本出願人は、前述の如き従来方式を改良す
るため、内張れんがを係止金物により固定する方式を提
案した（特開平１−３０９９１５号及び実開平３−１０
６３４３号）。In order to improve the above-mentioned conventional method, the applicant of the present invention has proposed a method of fixing the lining brick with a locking metal (Japanese Patent Laid-Open No. 1-309915 and Japanese Utility Model Laid-Open No. 3-10).
6343).
【０００６】図２は現在使用されている転炉絞り部の一
例を示す縦断面図であり、絞り部の煉瓦１１は直胴部煉
瓦１２より長さが短い煉瓦を用い、絞り部の下部で絞り
部煉瓦１１に変えたり、背面にスタンプ材を使用して寸
法の調整を行ない、絞り部の内張り炉材表面は転炉鉄皮
１３と平行な構造としてある。FIG. 2 is a vertical cross-sectional view showing an example of the converter throttle part currently used. The brick 11 of the throttle part is a brick whose length is shorter than that of the straight-body bricks 12, and the lower part of the throttle part is used. The size of the lining furnace material of the squeezing portion is parallel to the converter iron shell 13 by changing the size of the squeezing portion brick 11 or using a stamp material on the back surface to adjust the dimensions.
【０００７】このような構造では、直胴部炉壁の高さ方
向熱膨張を、絞り部の転炉鉄皮１３により拘束され、破
線２０で示すような亀裂が発生し、遂には内張り煉瓦１
１が脱落する状態となることが知られている。In such a structure, the thermal expansion in the height direction of the furnace wall of the straight body portion is restrained by the converter iron shell 13 of the throttle portion, and a crack as shown by a broken line 20 is generated, and finally the lining brick 1
It is known that 1 will fall out.
【０００８】本発明は、前述の如き従来方式と全く発想
を異にし、内張煉瓦の炉内側端面を結んだ傾斜角度を、
製鋼炉外周の鉄皮の軸線に対する傾斜角度より小とした
構成とすることにより、内張煉瓦の上下方向の膨張によ
る亀裂の発生を防止し、内張煉瓦の延命が図れる製鋼炉
絞り部構造を提供するものである。The present invention is completely different from the above-mentioned conventional method in that the inclination angle connecting the furnace inner end surface of the lining brick is
By making the structure smaller than the angle of inclination of the iron shell on the outer circumference of the steelmaking furnace with respect to the axis, the cracking caused by the vertical expansion of the lining brick is prevented from occurring and the structure of the steelmaking furnace squeezing part that prolongs the life of the lining brick is achieved. It is provided.
【０００９】[0009]
【課題を解決するための手段】本発明者等は、前述の如
き従来の製鋼炉絞り部の諸欠陥を解決するため種々検
討、実験の結果本発明を開発したものであり、本発明の
技術的構成は、精錬炉の絞り部の構造において、精錬炉
の軸線と鉄皮とのなす角度よりも、該軸線と内張り炉材
表面角度とのなす角度が小さいことを特徴とする精錬炉
絞り部構造にあり、このような技術的構成とすることに
より、下部煉瓦の膨張により絞り部に応力が発生する
が、従来構造の場合は、絞り部中段以下にその応力が発
生し、応力が集中することとなる。これに対し、本考案
では絞り部上部まで応力が生じ、応力の集中部がなくな
る。従って、従来方式では２０００チャージ程度で亀裂
発生等の損傷により使用不能となったが、本発明の構成
とすることにより、４５００チャージでもパーマ煉瓦の
露出及び内張り煉瓦の脱落事故等が全く発生することが
ない効果を発揮するものである。The inventors of the present invention have developed the present invention as a result of various examinations and experiments in order to solve the various defects of the conventional steelmaking furnace throttle portion as described above, and the technique of the present invention. In the structure of the narrowing portion of the refining furnace, the narrowing portion of the refining furnace is characterized in that the angle between the axis line of the refining furnace and the iron skin is smaller than the angle between the axis line and the surface angle of the lining furnace material. In the structure, with such a technical configuration, the expansion of the lower brick causes stress in the narrowed portion, but in the case of the conventional structure, the stress occurs in the middle portion of the narrowed portion and the stress concentrates. It will be. On the other hand, in the present invention, stress is generated up to the upper portion of the narrowed portion, and the stress concentration portion is eliminated. Therefore, in the conventional method, it was unusable after about 2000 charges due to damage such as cracking, but with the configuration of the present invention, even with 4500 charges, the exposure of the perm bricks and the falling accident of the lining bricks, etc. may occur at all. There is no effect.
【００１０】図１は本発明を転炉絞り部に適用した例を
示す縦断面図であり、直胴部煉瓦１２上方の絞り部煉瓦
は、最下部の絞り部煉瓦１から最上部絞り部煉瓦３まで
順次その長さ寸法を小とし、これら絞り部煉瓦の炉内表
面を直線状に積み込み施工してある。なお、この絞り部
煉瓦は複数種の長さ寸法とし、絞り部煉瓦の背面（鉄皮
側）にスタンプ材を施工して炉内表面を整列（面一）し
てもよい。FIG. 1 is a vertical cross-sectional view showing an example in which the present invention is applied to a converter drawing part. The drawing part bricks above the straight body part bricks 12 are from the lowermost drawing part brick 1 to the uppermost drawing part brick. The length of the bricks is gradually reduced up to 3, and the inner surface of the furnace of these narrowed bricks is linearly loaded and constructed. The drawn bricks may have a plurality of lengths, and a stamping material may be applied to the back surface (iron skin side) of the drawn bricks to align (flush) the inner surface of the furnace.
【００１１】図１図示の構成とすることにより、転炉鉄
皮１３と軸線との角度は３０°であるが、内張り炉材表
面と軸線とで形成する角度はほぼ２２°となる。With the configuration shown in FIG. 1, the angle between the converter shell 13 and the axis is 30 °, but the angle formed by the surface of the lining furnace material and the axis is approximately 22 °.
【００１２】以上代表的な転炉絞り部の構造について説
明したが、絞り部を有する他の製鋼炉についても同様な
構成とすることにより、絞り部に発生する損傷を未然に
防止する効果を発揮するものである。Although the structure of the typical converter drawing part has been described above, the effect of preventing damage to the drawing part can be achieved by using the same structure for other steel-making furnaces having the drawing part. To do.
【００１３】[0013]
【発明の効果】前述した従来の構造では、２０００チャ
ージ程度で絞り部に亀裂が発生し使用不能であったが、
本発明の構成とすることにより、その寿命はほゞ４５０
０チャージに達しても従来の如き内張り煉瓦の脱落、パ
ーマ煉瓦の露出等の損傷は認められなかった。In the above-mentioned conventional structure, a crack was generated in the narrowed portion at about 2000 charges, and it was unusable.
With the configuration of the present invention, the life is about 450.
Even when the charge reached 0, no damage such as the falling of the lining brick and the exposure of the perm brick was observed as in the conventional case.
【図１】本発明を転炉絞り部に適用した例を示す縦断面
図FIG. 1 is a vertical sectional view showing an example in which the present invention is applied to a converter throttle portion.
【図２】従来方式の図１と同様の縦断面図FIG. 2 is a vertical sectional view similar to FIG. 1 of a conventional method.
１ 最下部煉瓦 ３ 最上部煉瓦 １１ 絞り部煉瓦 １２ 直胴部煉瓦 １３ 転炉鉄皮 ２０ 亀裂 1 Brick at the bottom 3 Brick at the top 11 Brick at the drawing part 12 Brick at the straight body part 13 Converter iron shell 20 Crack
───────────────────────────────────────────────────── フロントページの続き (72)発明者 竹内 宏行 兵庫県加古川市金沢町１番地 株式会社神 戸製鋼所加古川製鉄所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroyuki Takeuchi 1 Kanazawa Town, Kakogawa City, Hyogo Prefecture Kadogawa Steel Works Kakogawa Steel Works
Claims (1)
の軸線と鉄皮とのなす角度よりも、該軸線と内張り炉材
表面角度とのなす角度が小さいことを特徴とする精錬炉
絞り部構造。1. The structure of the refining furnace throttle part, wherein the angle between the axis of the refining furnace and the surface of the iron shell is smaller than the angle between the axis of the refining furnace and the surface of the lining furnace material. Part structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16547093A JPH073321A (en) | 1992-11-02 | 1993-07-05 | Structure of constricted part in refining furnace |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4-294390 | 1992-11-02 | ||
| JP29439092 | 1992-11-02 | ||
| JP16547093A JPH073321A (en) | 1992-11-02 | 1993-07-05 | Structure of constricted part in refining furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH073321A true JPH073321A (en) | 1995-01-06 |
Family
ID=26490196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16547093A Pending JPH073321A (en) | 1992-11-02 | 1993-07-05 | Structure of constricted part in refining furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH073321A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0751362A1 (en) * | 1995-06-26 | 1997-01-02 | Harbison-Walker Refractories Company | Refractory brick design for open end of refractory lined vessel |
-
1993
- 1993-07-05 JP JP16547093A patent/JPH073321A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0751362A1 (en) * | 1995-06-26 | 1997-01-02 | Harbison-Walker Refractories Company | Refractory brick design for open end of refractory lined vessel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH073321A (en) | Structure of constricted part in refining furnace | |
| JP2010248557A (en) | Dip tube | |
| JPH0331491Y2 (en) | ||
| JPH10280030A (en) | RH vacuum degassing furnace repair side wall and RH vacuum degassing furnace repair method | |
| JP3303019B2 (en) | Immersion tube for vacuum degassing equipment | |
| JP2586771Y2 (en) | Manhole fireproof block | |
| JPH101714A (en) | Immersion tube for treating molten metal | |
| JP7319563B2 (en) | Tuyere member and method of installing tuyere in bottom of molten metal smelting vessel | |
| JP2000192160A (en) | Lance pipe with circular cross section and method of forming the same | |
| TWI773163B (en) | Integrated tuyere for converter | |
| JPS6317567Y2 (en) | ||
| JPS6350068Y2 (en) | ||
| JP3055661B2 (en) | Immersion tube for vacuum degasser | |
| JPH0734119A (en) | Immersion tube for vacuum degassing equipment | |
| JPH01252889A (en) | Structure of monolithic refractory lining for furnace wall | |
| JPH0516202Y2 (en) | ||
| JPH0448Y2 (en) | ||
| JPH0514145U (en) | Ascending pipe for vacuum degassing equipment | |
| JPH06307774A (en) | Lining construction of ladle | |
| WO2006077786A1 (en) | Reverse slant lining structure of furnace with reduced part structure | |
| WO2024254631A1 (en) | Refractory snorkel | |
| JP2987296B2 (en) | Immersion tube for RH vacuum degassing equipment | |
| JPH07258721A (en) | Immersion tube for treating molten metal | |
| JPH086022Y2 (en) | Converter Furnace Mouth brick fallout prevention structure | |
| JPH08219658A (en) | Furnace lining with water pipe of industrial ceramic furnace |