JPH05237646A - Hot drying method for lining refractory of tundish and the like and device for hot drying - Google Patents
Hot drying method for lining refractory of tundish and the like and device for hot dryingInfo
- Publication number
- JPH05237646A JPH05237646A JP4313192A JP4313192A JPH05237646A JP H05237646 A JPH05237646 A JP H05237646A JP 4313192 A JP4313192 A JP 4313192A JP 4313192 A JP4313192 A JP 4313192A JP H05237646 A JPH05237646 A JP H05237646A
- Authority
- JP
- Japan
- Prior art keywords
- tundish
- refractory
- burner
- heating
- drying
- 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.)
- Granted
Links
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、取鍋、転炉、タンディ
ッシュ等(本明細書ではこれらを単にタンディッシュ等
という)に内張される施工耐火物の加熱乾燥方法及び装
置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for heating and drying a construction refractory which is lined in a ladle, a converter, a tundish or the like (these are simply referred to as tundish in this specification).
【0002】[0002]
【従来の技術】タンディッシュ等では、耐火物の溶損に
より定期的に或いは必要に応じて随時、耐火物の張り替
えが行われ、施工を終えたのちには施工耐火物を乾燥さ
せるため、図1に示すようにカバー1を被せた状態でバ
ーナ2をカバー1に設けた孔3ごとに配置し、そのフレ
ーム4を孔3を通して直接施工耐火物5に当てゝ乾燥し
ていた。2. Description of the Related Art In a tundish or the like, refractory material is refilled regularly or as needed due to melting damage of the refractory material, and after the construction is completed, the construction refractory material is dried. As shown in FIG. 1, the burner 2 was arranged in each hole 3 provided in the cover 1 with the cover 1 covered, and the frame 4 thereof was directly applied to the construction refractory 5 through the hole 3 and dried.
【0003】[0003]
【発明が解決しようとする課題】上述する従来の加熱方
法では、バーナのフレームの当たる箇所は急加熱されて
温度が急速に上昇する反面、フレームの当たらない箇所
の温度上昇は低く、フレームの当たる箇所と当たらない
箇所では温度差を生じるとともに熱膨張差も生じる。そ
のために不定形耐火物組織が不均一なものとなったり、
表面亀裂、内部亀裂或いは層間亀裂など様々な亀裂が発
生し、耐火物寿命低下の大きな要因となっていた。In the conventional heating method described above, the portion of the burner frame that is in contact with the frame is rapidly heated and the temperature rises rapidly, while the temperature of the portion that is not in contact with the frame is low and the temperature of the frame is in contact with the burner. A difference in temperature and a difference in thermal expansion occur between the part and the part that does not hit. As a result, the irregular refractory structure becomes uneven,
Various cracks such as surface cracks, internal cracks, and interlayer cracks were generated, which was a major factor in shortening the refractory life.
【0004】また、バーナのフレームの当たる箇所の温
度上昇が速過ぎると、不定形耐火物中の水分がスムース
に抜けきれないで水蒸気爆発を起こしたり、施工耐火物
に亀裂が発生する。そのために再施工しなければならな
くなって手間がかゝるほか、耐火物が飛び散るため危険
でもあった。本発明は、局部加熱によって生ずる上記の
問題を解消することを目的としてなされたものである。If the temperature of the burner frame hits too fast, the moisture in the irregular shaped refractory cannot be smoothly removed, causing a steam explosion or cracks in the constructed refractory. For that reason, it has to be reconstructed, which is troublesome, and it is also dangerous because refractory materials scatter. The present invention has been made for the purpose of eliminating the above problems caused by local heating.
【0005】[0005]
【課題の解決手段及び作用】本発明はそのため、タンデ
ィッシュ等内に耐熱性を有し、側面に一ないし複数の孔
を形成した有底の筒体を設置し、バーナのフレームを筒
体内に入れて加熱するようにしたものである。すなわち
本発明は、タンディッシュ等に内張りされる施工耐火物
をバーナにより加熱乾燥する方法において、バーナのフ
レームを耐熱性を有し、側面に一ないし複数の孔を形成
した有底の筒体内に入れて施工耐火物の加熱乾燥を行う
ようにしたものである。According to the present invention, therefore, a bottomed cylinder having heat resistance and having one or a plurality of holes formed on its side surface is installed in a tundish or the like, and a burner frame is installed in the cylinder. It was put in and heated. That is, the present invention is a method for heating and drying a construction refractory lined in a tundish or the like with a burner, in which a flame of the burner has heat resistance and a bottomed cylinder having one or a plurality of holes formed on its side surface. It is designed to be put in and heat-dried for construction refractory.
【0006】本方法を実施するための加熱乾燥装置は、
タンディッシュ等内に設置されて施工耐火物を加熱乾燥
するためのバーナのフレームが入れられ、側面に一ない
し複数の孔を形成した耐熱性の有底の筒体より構成され
る。本発明によれば、バーナで加熱された筒体内の熱気
が孔を通して放散し、筒体からの輻射熱とともに対流に
よりタンディッシュ等内が均一に加熱され、バーナのフ
レームが施工耐火物に直接当たることがない。A heating and drying apparatus for carrying out the present method comprises:
A burner frame for heating and drying the construction refractory is installed in a tundish or the like, and is composed of a heat-resistant bottomed cylindrical body having one or a plurality of holes formed on its side surface. According to the present invention, the hot air in the cylinder heated by the burner is dissipated through the holes, the inside of the tundish or the like is uniformly heated by convection together with the radiant heat from the cylinder, and the burner frame directly hits the construction refractory. There is no.
【0007】本発明で用いられる筒体は、管状であって
もよいし、末広がり管状であってもよい。またその断面
形状も通常は円形とされるが、角形、楕円形その他任意
形状であってもよい。筒体に形成される孔は、複数であ
る場合、各孔は均一な大きさの孔であってもよいが、好
ましくは上方に向かって大きさが次第に小さくなるよう
な孔ないしピッチが次第に小さくなるような孔として形
成される。底部に向かって放熱量が多くなるようにする
ことにより、タンディッシュ内の温度分布が均一化され
るようになるからである。The tubular body used in the present invention may be tubular or divergent tubular. The cross-sectional shape is usually circular, but may be square, elliptical, or any other shape. When there are a plurality of holes formed in the cylindrical body, each hole may be a hole of uniform size, but it is preferable that the size of the hole becomes gradually smaller toward the top or the pitch becomes smaller. Is formed as a hole. By increasing the amount of heat radiation toward the bottom, the temperature distribution in the tundish becomes uniform.
【0008】筒体にはまた、熱気の放散を促進するため
に内部にエジェクターパイプを引入れ、エジェクターパ
イプから吹出すガスにより筒体内の熱気を孔を通して送
り出すようにするのが望ましい。Further, it is preferable that an ejector pipe is introduced into the cylindrical body in order to promote the dissipation of the hot air, and the hot air in the cylindrical body is discharged through the hole by the gas blown from the ejector pipe.
【0009】[0009]
【実施例】図2はタンディッシュ11の施工耐火物であ
る不定形材の母材12とパーマ材13を加熱乾燥する方
法について示すもので、タンディッシュカバー14のバ
ーナ孔15に対応する箇所にそれぞれ耐熱性を有する有
底の筒管16を設置したのち、タンディッシュカバー1
4を被せ、ついで各バーナ孔毎に配置したバーナ17を
点火してバーナフレーム18を筒管16内に入れ、筒管
16を介して施工耐火物を加熱乾燥するようにしたもの
である。EXAMPLE FIG. 2 shows a method of heating and drying a base material 12 of an irregularly shaped material and a perm material 13 which are construction refractories of a tundish 11, and shows a portion corresponding to a burner hole 15 of a tundish cover 14. After installing bottomed cylindrical tubes 16 each having heat resistance, the tundish cover 1
4 and then the burners 17 arranged in each burner hole are ignited to put the burner frame 18 in the tubular pipe 16 and the construction refractory is heated and dried through the tubular pipe 16.
【0010】筒管16は、図3に示すように下部側面に
タンディッシュ11の長手方向を向く角孔19を左右対
称位置に形成するとともにT形のエジェクターパイプ2
1が角孔19に向けられて底部より突設し、タンディッ
シュ外部よりエアーがガス管22を通ってエジェクター
パイプ21に供給され、該パイプより左右に吹出してバ
ーナフレーム18で熱せられた筒管内の熱気を角孔19
を通して送り出すようにしている。As shown in FIG. 3, the cylindrical pipe 16 has rectangular holes 19 in the lower side surface which are oriented in the longitudinal direction of the tundish 11 at symmetrical positions and has a T-shaped ejector pipe 2.
1 is directed to the square hole 19 and protrudes from the bottom, and air is supplied from the outside of the tundish to the ejector pipe 21 through the gas pipe 22 and is blown out left and right from the pipe and heated by the burner frame 18 in the tubular pipe. The hot air of the square hole 19
I try to send it out through.
【0011】本方法によれば、筒管16から吹出す熱風
と筒管からの輻射熱によりタンディッシュ内は高温の均
一温度の熱気で充満されるようになり、そのため母材1
2やパーマ材13は、部位による温度差を生ずることな
く均一な加熱乾燥が行われる。図4は、本方法で加熱さ
れたタンディッシュ内の1ストランド側と2ストランド
側の雰囲気温度を熱電対を用いて計測したものである。
因みに図5は、図1に示す従来法で加熱した場合の同箇
所における雰囲気温度を示す。According to this method, the hot air blown out from the tube 16 and the radiant heat from the tube allow the inside of the tundish to be filled with hot air having a high uniform temperature.
2 and the perm material 13 are uniformly heated and dried without causing a temperature difference depending on the site. FIG. 4 shows the measurement of the ambient temperature on the first strand side and the second strand side in the tundish heated by this method using a thermocouple.
Incidentally, FIG. 5 shows the ambient temperature at the same location when heated by the conventional method shown in FIG.
【0012】図4及び図5を比較参照すると明らかであ
るように、本方法による方が1ストランド側と2ストラ
ンド側の温度差が少なく、設定昇熱曲線に近似した加熱
が行われるようになる。図6は施工耐火物を本方法によ
って加熱乾燥した場合と、従来法により加熱乾燥した場
合のタンディッシュの耐火物の寿命について示すもの
で、従来法による場合、最小196チャージ(ch)、
最大300ch、平均242chであったものが、本方
法による場合、最小263ch、最大365ch、平均
295chに向上した。As is apparent from a comparison of FIGS. 4 and 5, the temperature difference between the one-strand side and the two-strand side is smaller by this method, and heating similar to the set heating curve is performed. . FIG. 6 shows the life of the tundish refractory when the construction refractory is heated and dried by this method and when it is heat-dried by the conventional method. In the case of the conventional method, a minimum of 196 charges (ch),
The maximum number of 300 ch and the average of 242 ch were improved to the minimum of 263 ch, the maximum of 365 ch, and the average of 295 ch in the case of this method.
【0013】[0013]
【発明の効果】本発明は以上のように構成され、次のよ
うな効果を奏する。請求項1記載の方法及び請求項2記
載の装置によれば、バーナのフレームが直接施工耐火物
に当たるようなことがないうえ、バーナのフレームで加
熱された筒体内の熱気が筒体側面に形成される孔を通し
て放散されるようになり、筒体からの輻射熱とでタンデ
ィッシュ等内が高温の均一温度の熱気で充満されるよう
になるため、施工耐火物を局部加熱することなく均一に
加熱乾燥することができ、したがって部位による熱膨張
差を生じないため、亀裂のない均一な組織の耐火物が得
られ、耐火物の寿命が向上する。The present invention is constructed as described above and has the following effects. According to the method of claim 1 and the device of claim 2, the burner frame does not directly hit the construction refractory, and hot air in the cylinder heated by the burner frame is formed on the side surface of the cylinder. The tundish will be filled with hot air of high temperature and uniform temperature by radiant heat from the cylindrical body, so that the construction refractory will be heated uniformly without local heating. Since the refractory can be dried and therefore does not cause a difference in thermal expansion depending on the site, a refractory having a uniform structure without cracks is obtained, and the life of the refractory is improved.
【0014】請求項3記載の装置のように孔を形成すれ
ば、タンディッシュ等内の温度分布が均一化されるよう
になる。請求項4記載の装置のようなエジェクターパイ
プを設ければ、筒体内の熱気の放散が促進され、タンデ
ィッシュ等内の温度をより均一かつ円滑に上昇させるこ
とができる。By forming the holes as in the apparatus according to the third aspect, the temperature distribution in the tundish or the like becomes uniform. By providing the ejector pipe as in the apparatus according to the fourth aspect, the diffusion of hot air in the cylinder is promoted, and the temperature in the tundish or the like can be raised more uniformly and smoothly.
【図1】 従来法による施工耐火物の加熱乾燥方法を示
す図。FIG. 1 is a diagram showing a method for heating and drying a construction refractory material by a conventional method.
【図2】 本発明による施工耐火物の加熱乾燥方法を示
す図。FIG. 2 is a diagram showing a method for heating and drying a construction refractory material according to the present invention.
【図3】 筒管の拡大断面図。FIG. 3 is an enlarged sectional view of a cylindrical tube.
【図4】 タンディッシュ内の加熱乾燥時における1ス
トランド側と2ストランド側の雰囲気温度を示す図。FIG. 4 is a diagram showing the atmospheric temperature on the first strand side and the second strand side during heating and drying in the tundish.
【図5】 従来法による場合の同筒所における雰囲気温
度を示す図。FIG. 5 is a diagram showing an atmospheric temperature in the same cylinder when the conventional method is used.
【図6】 本発明と従来法の加熱乾燥方法によって得ら
れたタンディッシュの寿命を示すグラフ。FIG. 6 is a graph showing the life of tundish obtained by the present invention and the conventional heating and drying method.
11・・・タンディッシュ 12・・・母材 13・・・パーマ材 14・・・タン ディッシュカバー 15・・・バーナ孔 16・・・筒管 17・・・バーナ 18・・・バー ナフレーム 19・・・角孔 21・・・エジ ェクターパイプ 11 ... Tundish 12 ... Base material 13 ... Permanent material 14 ... Tundish cover 15 ... Burner hole 16 ... Cylindrical tube 17 ... Burner 18 ... Burner frame 19・ ・ ・ Square hole 21 ・ ・ ・ Ejector pipe
Claims (4)
火物をバーナにより加熱乾燥する方法において、バーナ
のフレームを耐熱性を有し、側面に一ないし複数の孔を
形成した有底の筒体内に入れて施工耐火物の加熱乾燥を
行うようにしたことを特徴とする方法。1. A method of heating and drying a construction refractory lined in a tundish or the like with a burner, wherein the frame of the burner has heat resistance and a bottomed cylinder having one or a plurality of holes formed on its side surface. The method is characterized in that the refractory is put in and heat-dried.
ィッシュ等内に設置され、施工耐火物を加熱乾燥するた
めのバーナのフレームが入る耐熱性の有底の筒体よりな
ることを特徴とするタンディッシュ等に内張りされる施
工耐火物の加熱乾燥装置。2. A heat-resistant bottomed cylinder which is installed in a tundish or the like having one or a plurality of holes on the side surface and which accommodates a burner frame for heating and drying the construction refractory. A heating and drying device for construction refractory that is lined in the characteristic tundish.
くなる孔若しくはピッチが次第に小さくなる孔である請
求項2記載の加熱乾燥装置。3. The heating / drying apparatus according to claim 2, wherein the holes are holes whose size is gradually decreased upward or holes are gradually decreased.
イプが引入れられる請求項2又は3のいづれかの請求項
に記載の加熱乾燥装置。4. The heating / drying device according to claim 2, wherein an ejector pipe for blowing gas is introduced into the cylindrical body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4313192A JP2939039B2 (en) | 1992-02-28 | 1992-02-28 | Method and apparatus for heating and drying construction refractories lined in tundish etc. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4313192A JP2939039B2 (en) | 1992-02-28 | 1992-02-28 | Method and apparatus for heating and drying construction refractories lined in tundish etc. |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05237646A true JPH05237646A (en) | 1993-09-17 |
JP2939039B2 JP2939039B2 (en) | 1999-08-25 |
Family
ID=12655297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4313192A Expired - Fee Related JP2939039B2 (en) | 1992-02-28 | 1992-02-28 | Method and apparatus for heating and drying construction refractories lined in tundish etc. |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2939039B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110052597A (en) * | 2019-05-13 | 2019-07-26 | 濮阳市濮耐炉窑工程有限公司 | A kind of tundish dry material mould and its explosion-proof igniter |
-
1992
- 1992-02-28 JP JP4313192A patent/JP2939039B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110052597A (en) * | 2019-05-13 | 2019-07-26 | 濮阳市濮耐炉窑工程有限公司 | A kind of tundish dry material mould and its explosion-proof igniter |
CN110052597B (en) * | 2019-05-13 | 2024-01-19 | 濮阳市濮耐炉窑工程有限公司 | Tundish dry material mould and explosion-proof ignition device thereof |
Also Published As
Publication number | Publication date |
---|---|
JP2939039B2 (en) | 1999-08-25 |
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Legal Events
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A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19990601 |
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LAPS | Cancellation because of no payment of annual fees |