JPH0210102Y2 - - Google Patents
Info
- Publication number
- JPH0210102Y2 JPH0210102Y2 JP19910084U JP19910084U JPH0210102Y2 JP H0210102 Y2 JPH0210102 Y2 JP H0210102Y2 JP 19910084 U JP19910084 U JP 19910084U JP 19910084 U JP19910084 U JP 19910084U JP H0210102 Y2 JPH0210102 Y2 JP H0210102Y2
- Authority
- JP
- Japan
- Prior art keywords
- stave
- blast furnace
- cast iron
- base material
- ceramic granules
- 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.)
- Expired
Links
- 229910001018 Cast iron Inorganic materials 0.000 claims description 15
- 239000000919 ceramic Substances 0.000 claims description 15
- 239000008187 granular material Substances 0.000 claims description 14
- 239000002344 surface layer Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 description 14
- 239000011449 brick Substances 0.000 description 9
- 239000002994 raw material Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Landscapes
- Blast Furnaces (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案はステーブに係り、特に高炉寿命を延長
できるステーブに関し、高炉の炉壁冷却用に使用
される。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a stave, and particularly to a stave that can extend the life of a blast furnace and is used for cooling the wall of a blast furnace.
従来、高炉操業においては炉体を保護するため
冷却装置としてステーブが使用されている。すな
わち、第８図の如く高炉鉄皮２の内側にステーブ
４が設けられ更に高炉内張れんが６で内張りさ
れ、高炉原料８はその中で製錬される。
Conventionally, in blast furnace operation, a stave has been used as a cooling device to protect the furnace body. That is, as shown in FIG. 8, a stave 4 is provided inside the blast furnace shell 2, which is further lined with blast furnace lining bricks 6, and the blast furnace raw material 8 is smelted therein.
従来のステーブ４は、第９図Ａ，Ｂに示す如く
冷却水パイプ１０およびれんが１２を母材鋳鉄１
４に鋳込んだもので、ステーブ４の表層に鋳込ま
れたれんが１２部は横方向に数段設けられ、主と
して粘土質あるいは炭珪質である。 In the conventional stave 4, as shown in FIGS. 9A and 9B, a cooling water pipe 10 and a brick 12 are connected to a base material cast iron 1.
The 12 bricks cast into the surface layer of the stave 4 are arranged in several stages in the horizontal direction, and are mainly made of clay or silicic acid.
高炉操業により高炉内張れんが６が損傷する
と、その内側に位置する上記の従来のステーブ４
は高炉原料８の荷下がりにより、その降下抵抗を
受け、ステーブ４の構成部材である母材鋳鉄１４
およびれんが１２は摩耗し脱落する。また熱履歴
を受けることにより第１０図Ａ，Ｂに示す如く母
材鋳鉄１４とれんが１２の境界からクラツク１６
が発生し母材鋳鉄１４、れんが１２の溶損脱落が
起り、ついには冷却水パイプ１０が破損し炉体冷
却の用をなさなくなる。なお、第１０図Ｂの左側
の２重の斜線で示した部分はれんが１２および母
材鋳鉄１４の溶損脱落部１７を示す。 When the blast furnace lining brick 6 is damaged due to blast furnace operation, the above-mentioned conventional stave 4 located inside the blast furnace lining brick 6 is damaged.
is subjected to descending resistance due to the unloading of the blast furnace raw material 8, and the base material cast iron 14, which is a component of the stave 4,
and the bricks 12 wear out and fall off. Furthermore, due to the thermal history, cracks 16 are formed from the boundary between the base material cast iron 14 and the brick 12 as shown in FIGS. 10A and 10B.
This causes the base material cast iron 14 and the bricks 12 to melt and fall off, and eventually the cooling water pipe 10 is damaged and becomes useless for cooling the furnace body. Note that the double hatched area on the left side of FIG. 10B indicates the melted and fallen portion 17 of the brick 12 and base material cast iron 14.
ステーブ４の破損が進行すると健全な炉体プロ
フイルの維持が困難になり高炉操業に著しい悪影
響を与えるばかりでなく、ついには高炉鉄皮２が
破損し、休止にいたる。従つて摩耗や割れの発生
を防止し高炉の寿命を延長できるステーブの出現
が望まれていた。 As damage to the stave 4 progresses, it becomes difficult to maintain a healthy furnace profile, which not only has a significant negative impact on blast furnace operation, but also eventually causes damage to the blast furnace shell 2, leading to shutdown. Therefore, there has been a desire for a stave that can prevent wear and cracks and extend the life of the blast furnace.
本考案の目的は、上記従来技術に対する要望に
応じ、摩耗や割れの発生を防止できるステーブを
提供するにある。
An object of the present invention is to provide a stave that can prevent wear and cracks from occurring, in response to the above-mentioned demands for the prior art.
本考案の要旨とするところは次の如くである。
すなわち、高炉の炉壁冷却用に使用される冷却水
パイプを鋳込んだ鋳鉄製のステーブにおいて、前
記ステーブの炉内側全表層に５〜30mm径のセラミ
ツク粒塊を埋設したことを特徴とするステーブで
ある。
The gist of the present invention is as follows.
That is, a cast iron stave into which a cooling water pipe used for cooling the furnace wall of a blast furnace is cast, characterized in that ceramic granules with a diameter of 5 to 30 mm are embedded in the entire surface layer inside the furnace of the stave. It is.
本考案の詳細を第１図Ａ，Ｂ，Ｃに図示した実
施例により説明する。ステーブ４の炉内側全表面
の母材鋳鉄１４に円形のセラミツク粒塊１８が埋
設されている。 The details of the present invention will be explained with reference to the embodiments illustrated in FIGS. 1A, B, and C. Circular ceramic granules 18 are embedded in base material cast iron 14 on the entire surface inside the furnace of stave 4.
セラミツク粒塊１８の大きさは、径が５mm未満
の場合には摩耗が早く、かつ埋込み周囲の母材鋳
鉄１４の摩耗により剥離、脱落しやすくなり、ま
た径が30mmを越すと熱応力等でセラミツク粒塊１
８自体にクラツクが入り脱落しやすくなるので、
径５〜30mmの範囲に限定した。 Regarding the size of the ceramic granules 18, if the diameter is less than 5 mm, they will wear out quickly, and they will easily peel off or fall off due to wear of the base material cast iron 14 around the embedding, and if the diameter exceeds 30 mm, they will suffer from thermal stress, etc. Ceramic grain lump 1
8 itself may crack and fall off easily,
The diameter was limited to a range of 5 to 30 mm.
セラミツク粒塊１８の材質としては熱伝導性が
良くかつ機械的性質にすぐれているSiC等が望ま
しい。 The material of the ceramic granules 18 is preferably SiC or the like, which has good thermal conductivity and excellent mechanical properties.
また、ステーブ４の表層にセラミツク粒塊１８
を埋設するに際し、母材鋳鉄１４の表面に対して
セラミツク粒塊１８の表面高さは突出あるいは均
一いずれでもよい。 In addition, ceramic granules 18 are added to the surface layer of the stave 4.
When embedding, the surface height of the ceramic granules 18 relative to the surface of the base material cast iron 14 may be either protruding or uniform.
次にステーブ４の母材鋳鉄１４の表層に種々の
形状のセラミツク粒塊１８を埋設した実施態様を
図面で示す。セラミツク粒塊１８の形状として、
第２図はボール形状、第３図はそろばん玉形状、
第４図は円錐形状、第５図はつづみ形状のものを
それぞれ母材鋳鉄１４の表層に鋳込んだものであ
る。第６図は母材鋳鉄１４の表層に穴２０を設け
セラミツク粒塊１８を入れ接着材２２で固定した
ものである。また、第７図は母材鋳鉄１４の表層
にボール形状のセラミツク粒塊１８を２重に埋設
し、耐摩性をより向上させたものである。 Next, an embodiment in which ceramic granules 18 of various shapes are embedded in the surface layer of the base material cast iron 14 of the stave 4 is shown in the drawings. As the shape of the ceramic granules 18,
Figure 2 is a ball shape, Figure 3 is an abacus ball shape,
FIG. 4 shows a conical shape, and FIG. 5 shows a conical shape and a conical shape cast into the surface layer of the base material cast iron 14, respectively. In FIG. 6, holes 20 are made in the surface layer of base material cast iron 14, and ceramic granules 18 are inserted and fixed with adhesive 22. Further, in FIG. 7, ball-shaped ceramic granules 18 are embedded in the surface layer of the base material cast iron 14 in a double layer to further improve the wear resistance.
ステーブの表層に埋設されたセラミツク粒塊１
８は、機械的、物理的性質にすぐれ、かつ寸法が
適切であるので、摩耗および衝撃にすぐれた抵抗
性を示した。 Ceramic granules buried in the surface layer of the stave 1
No. 8 exhibited good resistance to abrasion and impact due to its excellent mechanical and physical properties and appropriate dimensions.
本考案はステーブの炉内側全表層に５〜30mm径
のセラミツク粒塊を埋設することにより、熱衝撃
や機械的衝撃によるステーブの割れによる損傷を
防止し、ステーブの耐摩耗性を向上し、高炉操業
の安定と高炉寿命延長の効果をあげることができ
た。
This invention prevents damage caused by cracking of the stave due to thermal shock or mechanical shock by embedding ceramic granules with a diameter of 5 to 30 mm in the entire surface layer inside the furnace of the stave, improves the wear resistance of the stave, and improves the blast furnace. We were able to stabilize operations and extend the life of the blast furnace.
第１図Ａ，Ｂ，Ｃは本考案のステーブを示しＡ
は正面図、Ｂは垂直断面図、Ｃは水平断面図、第
２図〜第７図はいずれも本考案の各種の実施態様
を示すステーブの部分断面図、第８図はステーブ
の使用状況を示す高炉の半断面図、第９図Ａ，Ｂ
は従来のステーブを示しＡは正面図、Ｂは断面
図、第１０図Ａ，Ｂは従来のステーブの割れと摩
耗状況を示しＡは正面図、Ｂは断面図である。
１０…冷却水パイプ、１４…母材鋳鉄、１８…
セラミツク粒塊。
Figure 1 A, B, and C show the stave of the present invention.
is a front view, B is a vertical cross-sectional view, C is a horizontal cross-sectional view, Figures 2 to 7 are partial cross-sectional views of staves showing various embodiments of the present invention, and Figure 8 shows how the stave is used. Half-sectional view of the blast furnace shown in Figures 9A and B
10 shows a conventional stave, A is a front view, B is a sectional view, and FIGS. 10A and 10B show cracks and wear conditions of the conventional stave, A is a front view, and B is a sectional view. 10...Cooling water pipe, 14...Base material cast iron, 18...
Ceramic granules.
Claims (1)
鋳込んだ鋳鉄製のステーブにおいて、前記ステー
ブの炉内側全表層に５〜30mm径のセラミツク粒塊
を埋設したことを特徴とするステーブ。 A stave made of cast iron into which a cooling water pipe used for cooling the wall of a blast furnace is cast, characterized in that ceramic granules having a diameter of 5 to 30 mm are embedded in the entire surface layer inside the furnace of the stave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19910084U JPH0210102Y2 (en) | 1984-12-25 | 1984-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19910084U JPH0210102Y2 (en) | 1984-12-25 | 1984-12-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61111948U JPS61111948U (en) | 1986-07-15 |
| JPH0210102Y2 true JPH0210102Y2 (en) | 1990-03-13 |
Family
ID=30758713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19910084U Expired JPH0210102Y2 (en) | 1984-12-25 | 1984-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0210102Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2778339B2 (en) * | 1992-03-27 | 1998-07-23 | 住友金属工業株式会社 | Stave cooler with thermal stress relaxation type functionally gradient material |
-
1984
- 1984-12-25 JP JP19910084U patent/JPH0210102Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61111948U (en) | 1986-07-15 |
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