JPH10273716A - Structure for flange joining part of molten metal treating apparatus - Google Patents
Structure for flange joining part of molten metal treating apparatusInfo
- Publication number
- JPH10273716A JPH10273716A JP9483697A JP9483697A JPH10273716A JP H10273716 A JPH10273716 A JP H10273716A JP 9483697 A JP9483697 A JP 9483697A JP 9483697 A JP9483697 A JP 9483697A JP H10273716 A JPH10273716 A JP H10273716A
- Authority
- JP
- Japan
- Prior art keywords
- brick
- lowermost
- lowermost brick
- molten metal
- lowermost step
- 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
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 45
- 239000002184 metal Substances 0.000 title claims abstract description 45
- 239000011449 brick Substances 0.000 claims abstract description 64
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 18
- 238000004901 spalling Methods 0.000 abstract description 14
- 229910052742 iron Inorganic materials 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 239000002390 adhesive tape Substances 0.000 abstract description 2
- 239000007767 bonding agent Substances 0.000 abstract description 2
- 238000009849 vacuum degassing Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 239000011451 fired brick Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本考案は、溶融金属処理装置
フランジ接合部の構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a flange joint of a molten metal processing apparatus.
【０００２】[0002]
【従来の技術】ＲＨ式真空脱ガス装置、ＤＨ式真空脱ガ
ス装置、ＣＡＳ装置などの溶融金属処理装置は、内張り
耐火物の補修・交換などを容易にするために、フランジ
によって垂直方向に分割できるようになっている。例え
ば真空脱ガス装置においては、浸漬管と環流管、上部槽
と下部槽などの分割である。2. Description of the Related Art Molten metal processing equipment such as RH-type vacuum degassing equipment, DH-type vacuum degassing equipment, and CAS equipment are divided vertically by flanges to facilitate repair and replacement of refractory lining. I can do it. For example, in the case of a vacuum degassing apparatus, there are divisions such as a dip tube and a reflux tube, and an upper tank and a lower tank.
【０００３】図６は，上部槽（１）と下部槽（２）のフ
ランジ（３）接合部について、その従来構造を示した断
面図である。鉄皮（４）の内側に断熱材（５）を介して
耐火物（６）が内張りされる。FIG. 6 is a cross-sectional view showing a conventional structure of a joint portion of a flange (3) between an upper tank (1) and a lower tank (2). A refractory (6) is lined inside the steel shell (4) via a heat insulating material (5).
【０００４】フランジ（３）接合部の上方側最下段レン
ガ（７）は、下部槽（２）をフランジ（３）から取り外
した際、上部槽（１）の耐火物が脱落しないように、ス
トッパーの役割をもつ。このため、最下段レンガ（７）
の背面側に凹部（８）を設け、鉄皮（４）内周面に突設
した受金具（９）をこの凹部（８）に嵌合させることに
より、最下段レンガ（７）を係止している。The lowermost brick (7) on the upper side of the joint of the flange (3) is provided with a stopper so that the refractory of the upper tank (1) does not fall off when the lower tank (2) is removed from the flange (3). Has the role of. For this reason, the bottom brick (7)
A concave portion (8) is provided on the back side of the steel, and a metal fitting (9) protruding from the inner peripheral surface of the steel shell (4) is fitted into the concave portion (8) to lock the lowermost brick (7). doing.
【０００５】最下段レンガ（７）は、溶融金属処理装置
の使用による熱衝撃を受けて、背面に設けた凹部（８）
を起点とした亀裂が生じる問題がある。これに対しては
実開平７−２４９６２号によって提案されたとおり、最
下段レンガ（７）の後方を金属製フープ（１０）で囲繞
することで、亀裂が生じても最下段レンガ（７）が脱落
しないようにし、この問題の解決を図っている。The lowermost brick (7) receives a thermal shock due to the use of the molten metal processing apparatus, and the concave portion (8)
There is a problem that a crack originating from the above occurs. On the other hand, as proposed by Japanese Utility Model Application Laid-Open No. 7-24962, by surrounding the back of the lowermost brick (7) with a metal hoop (10), even if a crack occurs, the lowermost brick (7) can be formed. We are trying to solve this problem by preventing it from falling off.
【０００６】[0006]
【発明が解決しようとする課題】耐火物の損傷形態とし
て、構造的スポーリングがある。これは、耐火物が使用
中の高熱、スラグあるいはガスなど侵入などを受けて変
質層を形成し、亀裂が生じる現象である。この構造的ス
ポーリングは、稼働面側から一定の距離をおいて生じる
ために、通常の内張りでは隣接する耐火物の迫り圧によ
って、剥落が防止される。One type of damage to refractories is structural spalling. This is a phenomenon in which a refractory is subjected to high heat, slag, gas, or the like during use and forms an altered layer, thereby causing a crack. Since this structural spalling occurs at a certain distance from the working surface side, in a normal lining, the peeling is prevented by the pressing pressure of the adjacent refractory.
【０００７】しかし、これが上部槽（１）の最下段レン
ガ（７）の場合、下部槽（２）を取り外した際に下方側
の支持が失われるのと、レンガ間に介在したモルタルの
接着力も働いて、構造的スポーリングにより生じた亀裂
部分から前方が剥落する。構造的スポーリングは、一度
に大きく損傷することから、炉寿命の低下に対する影響
は大である。最下段レンガ（７）の後方を金属製フープ
（１０）で囲繞しただけでは、この構造的スポーリング
による損傷を防止することができない。However, when this is the lowermost brick (7) of the upper tank (1), when the lower tank (2) is removed, the support on the lower side is lost, and the adhesive strength of the mortar interposed between the bricks is also reduced. In operation, the front peels off from the cracks created by structural spalling. Structural spalling is severely damaged at one time and therefore has a significant effect on shortening furnace life. Simply surrounding the rear of the bottom brick (7) with a metal hoop (10) does not prevent this structural spalling damage.
【０００８】[0008]
【課題を解決するための手段】本発明は、溶融金属処理
装置フランジ接合部における上記従来の問題を解決する
ことを目的としたものであり、その特徴とするところ
は、垂直方向に着脱可能なフランジを備えた溶融金属処
理装置において、フランジ接合部の上方側最下段レンガ
の背面に凹部を設け、この凹部に鉄皮の内周面に突設し
た受金具を嵌合させ、且つ、前記最下段レンガの側面
に、最下段レンガの前後方向の３分の２以上にわたって
金属板を設けたものである。SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems at a flange joint portion of a molten metal processing apparatus, and the feature of the present invention is that it is detachable in a vertical direction. In the molten metal processing apparatus provided with a flange, a concave portion is provided on the back surface of the lowermost brick on the upper side of the flange joint portion, and a metal fitting protruding from the inner peripheral surface of the steel shell is fitted into the concave portion, and A metal plate is provided on the side surface of the lower brick over two-thirds or more in the front-rear direction of the lowermost brick.
【０００９】本発明によれば、溶融金属処理装置の使用
時の高温を受けて、最下段レンガが金属板の融着で周方
向に一体化する。その結果、最下段レンガに構造的スポ
ーリングが生じても、下部槽を取り外す際に、構造的ス
ポーリングによる亀裂から剥落が最小限に防止される。According to the present invention, the lowermost bricks are united in the circumferential direction by fusing the metal plates due to the high temperature during use of the molten metal processing apparatus. As a result, even if structural spalling occurs in the lowermost brick, when the lower tank is removed, peeling from cracks due to structural spalling is minimized.
【００１０】従来の金属製フープで囲繞では、凹部
（８）の亀裂に対処することが目的のため、金属製フー
プ（１０）は最下段レンガ（７ａ）の後方に位置してお
り、構造的スポーリングによる剥落を防止する効果はな
い。また、金属製フープによる囲繞（１０）では金属製
フープ（１０）の端部を溶接などで止めているが、溶接
による肉盛り部分を研磨して平滑化しなければならず、
金属板をレンガ側面に単に設ける本発明と違ってコスト
高を招く。In a conventional metal hoop, the metal hoop (10) is located behind the lowermost brick (7a) for the purpose of coping with cracks in the concave portion (8), so that it is structurally difficult. There is no effect of preventing spalling. In addition, in the surroundings (10) of the metal hoop, the end of the metal hoop (10) is stopped by welding or the like.
Unlike the present invention in which the metal plate is simply provided on the side of the brick, the cost is increased.
【００１１】[0011]
【発明の実施の形態】本発明の実施の形態を図に基づい
て説明すると、図１は本発明で使用する最下段レンガ
（７ａ）を背面から見た斜視図である。背面には、支持
金具を当接する凹部（８ａ）が形成される。この凹部の
具体的な形状は、図１示す凹溝型の他、例えば図２のよ
うに逆Ｌ字型の凹部（８ｂ）などででもよい。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the lowermost brick (7a) used in the present invention as viewed from the back. A concave portion (8a) for contacting the support metal is formed on the back surface. The specific shape of the concave portion may be, for example, an inverted L-shaped concave portion (8b) as shown in FIG. 2 other than the concave groove type shown in FIG.
【００１２】本発明では、最下段レンガ（７ａ）の側面
にこの最下段レンガの前後方向の３分の２以上にわたっ
て金属板（１１）を設ける。この金属板（１１）は、上
部槽に積付ける際に最下段レンガ同士の間に介在するこ
とで設けてもよいが、作業性の面からボンド剤、接着テ
ープなどで予め貼り付けた後、積付けるのが好ましい。In the present invention, the metal plate (11) is provided on the side surface of the lowermost brick (7a) over at least two-thirds of the lowermost brick in the front-rear direction. This metal plate (11) may be provided by being interposed between the lowermost bricks when it is loaded on the upper tank, but after being previously attached with a bonding agent, an adhesive tape or the like from the viewpoint of workability, It is preferable to load.
【００１３】構造的スポーリングによる亀裂は、稼働面
側から順に生じるため、金属板（１１）が、最下段レン
ガの前後方向の３分の２未満であれば、構造的スポーリ
ングの亀裂による剥落を防止する効果はない。さらに好
ましくは、前後方向の５分の４以上である。Since cracks due to structural spalling occur in order from the working surface side, if the metal plate (11) is less than two-thirds in the front-rear direction of the lowermost brick, it will peel off due to cracks in structural spalling. There is no effect to prevent. More preferably, it is 4/5 or more in the front-rear direction.
【００１４】金属板（１１）は側面だけではなく、上面
および／または下面に設けてもよい。しかし、金属板
（１１）は最下段レンガの外周方向に不連続にすること
が必要である。金属板（１１）は熱膨張が大きいため、
金属板（１１）を外周方向に連続的に設けると金属板
（１１）同士が迫り合ってレンガ積み構造に緩みが生
じ、最下段レンガの脱落防止の効果が損なわれる。The metal plate (11) may be provided not only on the side surface but also on the upper surface and / or the lower surface. However, the metal plate (11) needs to be discontinuous in the outer peripheral direction of the lowermost brick. Since the metal plate (11) has a large thermal expansion,
When the metal plates (11) are continuously provided in the outer peripheral direction, the metal plates (11) come close to each other and the brick structure is loosened, and the effect of preventing the lowermost brick from falling off is impaired.
【００１５】図３〜５は、最下段レンガの長さ方向に直
角の断面を示したものである。図３は金属板（１１）を
レンガ側面と同時に、上下面にも設けた例である。図４
は、各２面づつを一体化した例である。また、図５は上
下面において金属板を不連続にした。このように、レン
ガ全体に対しては少なくとも一部において不連続の箇所
を設ける。金属板（１１）は、例えば０．１〜２ｍｍ、
好ましくは０．５〜１ｍｍの鉄製あるいはステンレス鋼
製などが使用できるが、経済面から鉄製が好ましい。3 to 5 show cross sections perpendicular to the length direction of the lowermost brick. FIG. 3 shows an example in which the metal plate (11) is provided not only on the side of the brick but also on the upper and lower surfaces. FIG.
Is an example in which each two surfaces are integrated. In FIG. 5, the metal plate is discontinuous on the upper and lower surfaces. In this way, discontinuous portions are provided in at least a part of the entire brick. The metal plate (11) is, for example, 0.1 to 2 mm,
Preferably, 0.5 to 1 mm of iron or stainless steel can be used, but iron is preferable from the economical point of view.
【００１６】[0016]
実施例；２３０ｔ容量のＲＨ式真空脱ガス装置における
上部槽−下部槽間のフランジ接合部において試験した。
稼働面側９８×３００ｍｍ、背面側１３３×３００ｍ
ｍ、長さ４１２ｍｍのマグネシア−クロム質焼成煉瓦よ
りなる最下段レンガに、厚さ１ｍｍの鉄板をレンガの両
側面に、その長さ４００ｍｍにわたって設けた。Example: A test was performed at a flange joint between an upper tank and a lower tank in an RH type vacuum degassing apparatus having a capacity of 230 t.
Working surface side 98x300mm, back side 133x300m
m, a bottom plate made of magnesia-chromium fired brick having a length of 412 mm and iron plates having a thickness of 1 mm provided on both sides of the brick over a length of 400 mm.
【００１７】脱ガス装置の使用においては、高熱を受け
て鉄板が隣接するレンガ側面を互いに融着する。本発明
では鉄板がレンガ側面のほぼ全体にわたって設けられて
いることから、下部槽取外しの際、層背面の凹部を起点
として生じた亀裂が原因しての最下段レンガの脱落防止
のみならず、構造的スポーリングによるレンガの稼働面
側の脱落を防止し、上部槽内張りの寿命を後述した比較
例にくらべて１．３倍以上向上させることができた。ま
た、鉄板をさらに最下段レンガの上下面にも設けた場合
についても、同様の効果が得られた。In the use of a degassing device, an iron plate is subjected to high heat to fuse adjacent brick side surfaces together. In the present invention, since the iron plate is provided over almost the entire side surface of the brick, when the lower tank is removed, not only the lowermost brick is prevented from falling off due to the crack generated from the concave portion on the back of the layer, but also the structure It was possible to prevent the bricks from falling off on the working surface side due to spalling, and to improve the life of the upper tank lining by 1.3 times or more as compared with a comparative example described later. The same effect was obtained when the iron plate was further provided on the upper and lower surfaces of the lowermost brick.
【００１８】比較例；上記の実施例と同様の脱ガス装置
と最下段レンガにおいて、最下段レンガの後方に厚さ１
ｍｍの鉄製フープを図７のように、レンガの後方に幅１
００ｍｍに囲繞した。その結果、背面の凹部を起点とし
て生じた亀裂が原因しての最下段レンガの脱落は防止す
ることができた。しかし、構造的スポーリングによる脱
落は防できず、結局は最下段レンガの寿命は短いもので
あった。Comparative Example: In the same degassing apparatus and lowermost brick as in the above embodiment, a thickness of 1
7 mm iron hoop behind the brick as shown in Fig. 7
Surrounded to 00 mm. As a result, it was possible to prevent the lowermost brick from falling off due to a crack generated from the concave portion on the back surface. However, shedding due to structural spalling could not be prevented, and eventually the bottom brick had a short lifespan.
【００１９】[0019]
【効果】以上に説明したように本考案によれば、下部槽
の取外しに伴う最下段レンガの損傷を防止する。この最
下段レンガが位置する上部槽は、直接溶鋼等に接触しな
いケースが多く、内張り全体としては損耗速度が小さい
ことから、補修頻度が少ない。このため、最下段レンガ
の損傷防止は、上部槽の内張り全体の寿命を向上し、ひ
いては溶融金属処理装置全体の稼働率向上に寄与し、そ
の効果は大きい。According to the present invention, as described above, damage to the lowermost brick caused by removing the lower tank is prevented. In many cases, the upper tank in which the lowermost brick is located does not directly contact molten steel or the like, and the frequency of repair is low because the wear rate of the entire lining is low. For this reason, prevention of damage to the lowermost brick improves the life of the entire lining of the upper tank, and thus contributes to an increase in the operation rate of the entire molten metal processing apparatus, and the effect is large.
【図１】本発明の実施の形態において、最下段レンガを
背面方向から見た斜視図。FIG. 1 is a perspective view of a lowermost brick viewed from the back in an embodiment of the present invention.
【図２】本発明の他の実施の形態において、最下段レン
ガを背面方向から見た斜視図。FIG. 2 is a perspective view of the lowermost brick viewed from the back in another embodiment of the present invention.
【図３】本発明の他の実施の形態において、最下段レン
ガの断面図。FIG. 3 is a cross-sectional view of a lowermost brick in another embodiment of the present invention.
【図４】本発明の他の実施の形態において、最下段レン
ガの断面図。FIG. 4 is a sectional view of a lowermost brick in another embodiment of the present invention.
【図５】本発明の他の実施の形態において、最下段レン
ガの断面図。FIG. 5 is a sectional view of a lowermost brick in another embodiment of the present invention.
【図６】溶融金属処理装置フランジ接合部の断面構造FIG. 6 is a cross-sectional structure of a flange joint of a molten metal processing apparatus.
【図７】従来例における最下段レンガの断面図。FIG. 7 is a sectional view of a lowermost brick in a conventional example.
１ 上部槽 ２ 下部槽 ３ フランジ ４ 鉄皮 ５ 断熱材 ６ 耐火物 ７，７ａ，７ｂ 側最下段レンガ ８，８ａ，８ｂ 凹部 ９ 受金具 １０ 金属製フープ １１ 金属板 DESCRIPTION OF SYMBOLS 1 Upper tank 2 Lower tank 3 Flange 4 Iron shell 5 Insulation material 6 Refractory 7, 7a, 7b Lowermost brick 8, 8a, 8b Concave part 9 Receiving tool 10 Metal hoop 11 Metal plate
Claims (2)
溶融金属処理装置において、フランジ接合部の上方側最
下段レンガの背面に凹部を設け、この凹部に鉄皮の内周
面に突設した受金具を嵌合させ、且つ、前記最下段レン
ガの側面に、最下段レンガの前後方向の３分の２以上に
わたって金属板を設けたことを特徴とする、溶融金属処
理装置フランジ接合部の構造。In a molten metal processing apparatus provided with a vertically detachable flange, a concave portion is provided on the back surface of the lowermost brick above the flange joint portion, and the concave portion protrudes from the inner peripheral surface of the steel shell. A structure of a flange joint portion of a molten metal processing apparatus, wherein a metal fitting is fitted, and a metal plate is provided on a side surface of the lowermost brick over two-thirds or more in a front-rear direction of the lowermost brick. .
溶融金属処理装置において、フランジ接合部の上方側最
下段レンガの背面に凹部を設け、この凹部に鉄皮の内周
面に突設した受金具を嵌合させ、且つ、前記最下段レン
ガの側面に、最下段レンガの前後方向の３分の２以上に
わたって金属板を設け、さらに前記最下段レンガの上面
および／または下面に金属板を設けると共に、該金属板
が前記最下段レンガの外周方向に不連続としたことを特
徴とする、溶融金属処理装置フランジ接合部の構造。2. A molten metal processing apparatus having a vertically detachable flange, wherein a concave portion is provided on the back surface of the lowermost brick above the flange joint, and the concave portion is provided on the inner peripheral surface of the steel shell. A metal fitting is fitted over the side of the lowermost brick, and a metal plate is provided over two-thirds or more in the front-rear direction of the lowermost brick, and a metal plate is further provided on the upper surface and / or lower surface of the lowermost brick. The structure of the flange joint portion of the molten metal processing apparatus, wherein the metal plate is provided discontinuously in the outer peripheral direction of the lowermost brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9483697A JPH10273716A (en) | 1997-03-28 | 1997-03-28 | Structure for flange joining part of molten metal treating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9483697A JPH10273716A (en) | 1997-03-28 | 1997-03-28 | Structure for flange joining part of molten metal treating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10273716A true JPH10273716A (en) | 1998-10-13 |
Family
ID=14121138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9483697A Pending JPH10273716A (en) | 1997-03-28 | 1997-03-28 | Structure for flange joining part of molten metal treating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10273716A (en) |
-
1997
- 1997-03-28 JP JP9483697A patent/JPH10273716A/en active Pending
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