JPH0488116A - Method for repairing circulating flow tubes in rh degassing apparatus - Google Patents
Method for repairing circulating flow tubes in rh degassing apparatusInfo
- Publication number
- JPH0488116A JPH0488116A JP20255790A JP20255790A JPH0488116A JP H0488116 A JPH0488116 A JP H0488116A JP 20255790 A JP20255790 A JP 20255790A JP 20255790 A JP20255790 A JP 20255790A JP H0488116 A JPH0488116 A JP H0488116A
- Authority
- JP
- Japan
- Prior art keywords
- press
- fitting
- cylinder
- tubes
- refractory
- 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
- 238000007872 degassing Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 title claims description 14
- 239000011823 monolithic refractory Substances 0.000 claims description 12
- 238000010992 reflux Methods 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 9
- 230000008439 repair process Effects 0.000 abstract description 14
- 238000007654 immersion Methods 0.000 abstract description 13
- 239000000463 material Substances 0.000 abstract description 12
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 5
- 239000011819 refractory material Substances 0.000 description 5
- 239000011449 brick Substances 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000004570 mortar (masonry) Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- RHDGNLCLDBVESU-UHFFFAOYSA-N but-3-en-4-olide Chemical compound O=C1CC=CO1 RHDGNLCLDBVESU-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はＲＨ脱ガス装置、特にＲＨ脱ガス装置の環流管
内張りの補修方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an RH degassing device, and more particularly to a method for repairing a reflux pipe lining of an RH degassing device.
（従来の技術）
ＲＨ脱ガス装置は、本体の処理槽１の下方に突出した環
流管と、その下方にフラノンを介して取付けられた浸漬
管などからなる。(Prior Art) The RH degassing device consists of a reflux pipe that protrudes below the processing tank 1 of the main body, and an immersion pipe that is attached below the reflux pipe via a furanone.
そして、両方の管ともに、内張りには、高温焼成のマグ
・クロれんがあるいはマグネシアれんがが使用されてい
るが、溶鋼の吸上は時、とくに両管の接合部あたりで溶
鋼の流速が増すために、内張りれんが５が局部的に損傷
される。したがって、一般に５０〜７０チヤージぐらい
操業すると次のような手段で中間補修することが広〈実
施されている。Both pipes are lined with high-temperature fired mag-black bricks or magnesia bricks, but the suction of molten steel increases at times, especially at the joint between the two pipes. , the lining brick 5 is locally damaged. Therefore, after approximately 50 to 70 charges of operation, intermediate repairs are generally carried out by the following means.
■ たとえば、薄鉄板などで円筒枠を作り、これを浸漬
管の内側鉄板と溶接によって接合し、当該円筒枠と溶損
した環流管壁との間に耐火モルタル（たとえば、ハイア
ルミナキャスタブル耐火物）をポンプなどによって流し
込み、乾燥加熱する、「脱ガス装置の補修方法」 （特
開昭５０−８７０２号公報）。■ For example, a cylindrical frame is made from a thin iron plate, etc., this is joined to the inner steel plate of the immersion tube by welding, and refractory mortar (for example, high alumina castable refractory) is used between the cylindrical frame and the eroded reflux pipe wall. ``Method for repairing degassing equipment'' (Japanese Unexamined Patent Publication No. 50-8702), in which degassing equipment is poured in using a pump or the like, and then dried and heated.
■ 吸上管などの中に、所望高さの内管部をセットして
おき、耐火スラリー中に浸し、減圧してスラリーを所要
高さに吸引上昇して、充填させ、その後減圧を解除して
未付着のスラリーを槽へもどすことによって被覆する、
「真空容器の補修方法」 （特開昭５５−１１０８７９
号公報）。■ Set the inner pipe section at the desired height in a suction pipe, etc., immerse it in the refractory slurry, reduce the pressure, suction up the slurry to the desired height, fill it, and then release the reduced pressure. coating by returning the unattached slurry to the tank.
“Method for repairing vacuum containers” (Japanese Patent Application Laid-Open No. 55-110879
Publication No.).
■ 耐火材を充填した環状型枠を被補修管の損耗部に下
方より上昇し、被覆嵌着させて、当該耐火物を接着させ
る、ｒＲＨ炉環炉管流管Ｈ炉炉上上排出管脱硫ランス補
修方法並ひにその装置」（特開昭５７−５７８４４号公
報）
などが知られている。■ An annular form filled with refractory material is raised from below to the damaged part of the pipe to be repaired, the covering is fitted, and the refractory is adhered. ``Lance repair method and apparatus'' (Japanese Unexamined Patent Publication No. 57-57844) is known.
（発明か解決しようとする課題）
前記■の方式は、とくに減圧などの煩雑な操作を必要と
するうえに、３者いずれも、激動する溶鋼か補修部分の
不定形耐火物を著しく浸食するので、補修後の耐用性か
短かい（平均５０〜７０チヤージ）という欠点かある。(Problem to be solved by the invention) Method (2) above requires particularly complicated operations such as depressurization, and all three methods significantly erode the turbulent molten steel or the monolithic refractory of the repaired part. However, the disadvantage is that the durability after repair is short (50 to 70 charges on average).
そこで、本発明者らは、このような問題を解決するため
に研究した結果、浸食を防止するには、不定形耐火物を
、耐食性のある耐火物で覆えばよいことを知見し、さら
に能率よく補修する方法を研究して、本補修方法を完成
させたのである。Therefore, as a result of research to solve such problems, the present inventors discovered that to prevent erosion, it is sufficient to cover monolithic refractories with corrosion-resistant refractories, and to improve efficiency. After researching ways to repair it well, he perfected this repair method.
本発明の目的は、環流管を能率よ（補修するとともに、
補修部の耐用性を向上することである。The purpose of the present invention is to improve (repair) the reflux pipe efficiently,
The objective is to improve the durability of the repaired part.
（課題を解決するための手段）
本発明方法の技術的構成は前記特許請求の範囲各項に明
記したとおりであるか、本発明方法の具体例を示す添付
図面に基いて詳述する。(Means for Solving the Problems) The technical configuration of the method of the present invention is as specified in each claim above, or will be explained in detail based on the attached drawings showing specific examples of the method of the present invention.
第１図は新規な浸漬管（１）に圧入用円筒（２）の下部
を挿入しかつ浸漬管（１）の頂面上でかつ圧入用円筒（
２）の外周に保護用耐火物（３）を周設した態様を示す
縦断面図である。第２図は第１図Ａ−Ａ線矢視図であり
、第３図は本発明方法完了時の状態を示す縦断面図であ
る。Figure 1 shows the lower part of the press-fit cylinder (2) inserted into a new dip tube (1), and the lower part of the press-fit cylinder (2) is placed on the top surface of the dip tube (1) and the press-fit cylinder (
2) is a vertical cross-sectional view showing an embodiment in which a protective refractory (3) is provided around the outer periphery of the refractory. FIG. 2 is a view taken along the line A--A in FIG. 1, and FIG. 3 is a longitudinal sectional view showing the state when the method of the present invention is completed.
補修しようとするＲＨ脱ガス装置の浸漬管を取りはずす
。Remove the immersion tube of the RH degasser to be repaired.
新規な浸漬管（１）に前記の如く圧入用円筒（２）を挿
入、係止する。圧入用円筒（２）を浸漬管の所定位置に
挿入、係止するため、第１図及び第２図に示す如く、該
圧入用円筒（２）の外周の所定位置に圧入円筒用ストッ
パー（４）を溶接等により固着し、更に、挿入後くさび
（５）を適当数用いて圧入用円筒（２）の固定を確実と
する。Insert and lock the press-fitting cylinder (2) into the new immersion tube (1) as described above. In order to insert and lock the press-fitting cylinder (2) in a predetermined position of the immersion tube, a press-fitting cylinder stopper (4) is placed at a predetermined position on the outer periphery of the press-fitting cylinder (2), as shown in Figures 1 and 2. ) are fixed by welding or the like, and after insertion, use an appropriate number of wedges (5) to securely fix the press-fit cylinder (2).
前述の如く装着された浸漬管（１）を第３図に示す如く
環流管（６）に下方より挿入し、環流管フランジ部と浸
漬管フランジ部を密着、固定する。The immersion tube (1) installed as described above is inserted into the reflux tube (6) from below as shown in FIG. 3, and the reflux tube flange and the immersion tube flange are brought into close contact and fixed.
ついで、圧入用円筒（２）に付設された不定形耐火物圧
入用パイプ（７）より不定形耐火物を圧入し、環流管（
６）の内周損耗部（８）と前記円筒（２）間の間隙に不
定形耐火物（９）を充填し、固化させ、不定形耐火物圧
入用パイプ（７）を取りはずして補修を完了する。Next, the monolithic refractory is press-fitted through the monolithic refractory press-fitting pipe (7) attached to the press-fitting cylinder (2), and the reflux pipe (
6) Fill the gap between the inner periphery wear part (8) and the cylinder (2) with monolithic refractory (9), solidify it, and remove the monolithic refractory press-fitting pipe (7) to complete the repair. do.
前記保護用耐火物（３）の材質は、ＲＨ脱ガス装置の処
理槽又は環流管等に広く使用されているクロム−マグネ
シア質或はマグネシア質などの、特に溶鋼に耐食性の犬
なる耐火物材料が好適である。The material of the protective refractory (3) is a refractory material that is particularly resistant to corrosion by molten steel, such as chromium-magnesia or magnesia, which is widely used in processing tanks or reflux pipes of RH degassing equipment. is suitable.
形状は、一般に、いわゆる薄板状であるが、後述する圧
入用円筒（２）によく密着するよう、外側（使用時、溶
鋼に接する側）を凹曲面状にしたり、また第１図に示す
ように土性側部（使用時、溶鋼に接触しない側）を斜め
に切欠いておけば、後述するように補修材（９）を圧入
する際都合かよい。なお、該保護用耐火物（３）を圧入
用円筒（２）に添着、固定する手段としては、モルタル
、あるいは、接着材で貼り付けたり、外側を針金でくく
るとよい。The shape is generally a so-called thin plate shape, but in order to fit well into the press-fitting cylinder (2) described later, the outside (the side that comes into contact with molten steel during use) is made into a concave curved shape, or as shown in Fig. 1. If the soil side part (the side that does not come into contact with molten steel during use) is notched diagonally, it will be convenient when press-fitting the repair material (9) as described later. In addition, as a means for attaching and fixing the protective refractory (3) to the press-fitting cylinder (2), it is preferable to attach it with mortar or an adhesive, or to tie the outside with a wire.
補修材（９）としては、周知の不定形耐火物、（流し込
み材、圧入材、キャスタブル耐火物など）ならなんでも
よいが、とくに、マグネシア−クロム質あるいは高アル
ミナ質のキャスタブル耐火物あるいは圧入材などが好適
である。そして、これらは、別に準備した圧送装置（図
示せず）から不定形耐火物圧入用パイプ（７）を経て、
前記の圧入用円筒（２）の内側に、該保護用耐火物（３
）の上端より若干上側に取付けられた不定形耐火物圧入
用パイプ（７）から常法によって圧入される。この際、
保護用耐火物（３）の上側が斜めに切欠いであるので、
その狭い部分で補修材（９）がよどむことなくスムーズ
に流れ、さらに下方および上方の間隙部の狭い奥部まで
完全に充填される。As the repair material (9), any well-known monolithic refractories (pouring materials, press-in materials, castable refractories, etc.) may be used, but in particular magnesia-chromium or high alumina castable refractories or press-in materials may be used. is suitable. Then, these are passed from a separately prepared pressure feeding device (not shown) to a pipe (7) for press-fitting monolithic refractories.
The protective refractory (3) is placed inside the press-fitting cylinder (2).
) is press-fitted using a conventional method from the monolithic refractory press-fitting pipe (7) installed slightly above the upper end of the refractory. On this occasion,
Since the upper side of the protective refractory (3) is diagonally cut out,
The repair material (9) flows smoothly in the narrow portion without stagnation, and is completely filled to the narrow inner parts of the lower and upper gaps.
圧入後はそのまま１５〜３０分放置して硬化させたのち
、小型バーナーなどで完全に乾燥する。After press-fitting, leave it as is for 15 to 30 minutes to harden, then dry completely using a small burner.
なお、一般には圧入用円筒（２）は、溶鋼成分に悪影響
をおよほさない材質のものを使用し、使用前に除去しな
いいわゆる焼きころしにする。Generally, the press-fitting cylinder (2) is made of a material that does not adversely affect the composition of molten steel, and is made of a so-called hot rolling material that is not removed before use.
（発明の効果）
保護用耐火物が圧入された補修材と強固に一体化してい
る。従って、剥離することなく補修材を保護するので、
補修した場合の耐用性が従来より約２０％向上する。(Effects of the invention) The protective refractory is firmly integrated with the press-fitted repair material. Therefore, it protects the repair material without peeling it off.
Durability when repaired is approximately 20% higher than before.
第１図は新規な浸漬管（１）に圧入用円筒（２）の下部
を挿入しかつ浸漬管（１）の頂面上でかつ圧入用円筒（
２）の外周に保護用耐火物（３）を周設した態様を示す
縦断面図である。第２図は第１図Ａ−Ａ線矢視図であり
、第３図は本発明方法完了時の状態を示す縦断面図であ
る。図中：
４・・・圧入円筒用ストッパー、５・・・クサビ、６・
・環流管、７・・・不定形耐火物圧入用パイプ、８・・
・損耗部、９・・・不定形耐火物。
第り図
第２図
手続争市正書
（自発）
平成
２年１０月Figure 1 shows the lower part of the press-fit cylinder (2) inserted into a new dip tube (1), and the lower part of the press-fit cylinder (2) is placed on the top surface of the dip tube (1) and the press-fit cylinder (
2) is a vertical cross-sectional view showing an embodiment in which a protective refractory (3) is provided around the outer periphery of the refractory. FIG. 2 is a view taken along the line A--A in FIG. 1, and FIG. 3 is a longitudinal sectional view showing the state when the method of the present invention is completed. In the diagram: 4... Stopper for press-fit cylinder, 5... Wedge, 6...
・Recirculation pipe, 7... Pipe for press-fitting monolithic refractories, 8...
- Worn part, 9... Monolithic refractory. Figure 2 Figure 2 Procedural Disputes City Official Book (Spontaneous) October 1990
Claims (2)
な浸漬管に圧入用円筒の下部を挿入固定し、該浸漬管頂
面上でかつ保護耐火物群を周設した、前記圧入用円筒を
補修しようとする環流管下方より嵌合、固定し、前記圧
入用円筒に設けた圧入パイプより不定形耐火物を圧入、
充填かつ硬化させることを特徴とする、ＲＨ脱ガス装置
環流管の補修方法。(1) Remove the lower dip tube of the RH degassing device, insert and fix the lower part of the press-fit cylinder into a new dip tube, and place the press-fit cylinder on the top surface of the dip tube and around the protective refractory group. Fit and fix the reflux pipe to be repaired from below, and press-fit the monolithic refractory through the press-fit pipe provided in the press-fit cylinder.
A method for repairing a RH degasser reflux pipe, the method comprising filling and curing the reflux pipe.
た形状とした請求項１記載のＲＨ脱ガス装置環流管の補
修方法。(2) The method for repairing an RH degasser recirculation pipe according to claim 1, wherein the upper corner of the outer periphery of the protective refractory is obliquely cut out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20255790A JPH0488116A (en) | 1990-08-01 | 1990-08-01 | Method for repairing circulating flow tubes in rh degassing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20255790A JPH0488116A (en) | 1990-08-01 | 1990-08-01 | Method for repairing circulating flow tubes in rh degassing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0488116A true JPH0488116A (en) | 1992-03-23 |
Family
ID=16459473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20255790A Pending JPH0488116A (en) | 1990-08-01 | 1990-08-01 | Method for repairing circulating flow tubes in rh degassing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0488116A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005121646A (en) * | 2003-09-23 | 2005-05-12 | Asulab Sa | Mobile electronics including at least one input/output terminal for establishing communication with internally arranged electronic unit |
| CN105087872A (en) * | 2014-05-22 | 2015-11-25 | 中钢集团耐火材料有限公司 | Repairing method of RH refining furnace vacuum chamber tank bottom and circulation pipe |
-
1990
- 1990-08-01 JP JP20255790A patent/JPH0488116A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005121646A (en) * | 2003-09-23 | 2005-05-12 | Asulab Sa | Mobile electronics including at least one input/output terminal for establishing communication with internally arranged electronic unit |
| CN105087872A (en) * | 2014-05-22 | 2015-11-25 | 中钢集团耐火材料有限公司 | Repairing method of RH refining furnace vacuum chamber tank bottom and circulation pipe |
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