JPH0520472B2 - - Google Patents

Info

Publication number
JPH0520472B2
JPH0520472B2 JP26607588A JP26607588A JPH0520472B2 JP H0520472 B2 JPH0520472 B2 JP H0520472B2 JP 26607588 A JP26607588 A JP 26607588A JP 26607588 A JP26607588 A JP 26607588A JP H0520472 B2 JPH0520472 B2 JP H0520472B2
Authority
JP
Japan
Prior art keywords
parts
weight
packing material
flexible
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.)
Expired - Fee Related
Application number
JP26607588A
Other languages
Japanese (ja)
Other versions
JPH02115688A (en
Inventor
Hajime Asami
Tsutomu Kobashi
Shintaro Mori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shinagawa Refractories Co Ltd
Original Assignee
Shinagawa Refractories Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shinagawa Refractories Co Ltd filed Critical Shinagawa Refractories Co Ltd
Priority to JP26607588A priority Critical patent/JPH02115688A/en
Publication of JPH02115688A publication Critical patent/JPH02115688A/en
Publication of JPH0520472B2 publication Critical patent/JPH0520472B2/ja
Granted legal-status Critical Current

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  • Gasket Seals (AREA)
  • Sealing Material Composition (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Description

【発明の詳細な説明】[Detailed description of the invention]

<産業上の利用分野> 本発明は可撓性且つ加圧収縮性を有する耐火性
パツキング材に関する。 <従来の技術> 従来、製鋼、造塊工場において溶鋼流を調整す
るため、ノズルストツパー方式、スライドバルブ
方式、浸漬ノズル等が使用されている。 これらの溶鋼流調整耐火構造体は各種耐火部材
の組立構造として使用されている。 これらの耐火部材の接合固定のため、従来より
耐火モルタルが使用されている。例えば溶鋼鍋、
タンデイツシユ等においてはスライドバルブ−ノ
ズル間、或はスリーブ−ストツパーヘツド間、お
よびストツパー上部と固定押えれんが、ガス吹込
式ストツパーではストツパー金物間に耐火モルタ
ルを塗布し、接合している。 また本出願人は主原料に結合剤として合成樹脂
エマルジヨンまたは/およびゴムラテツクスを配
合した可撓性かつ、加圧収縮性を有する耐火性パ
ツキングを提案した(特公昭61−14111号公報) なお、前記可撓度とはASTM747に準ずる試験
機で試料形状100×40×10mmとし、1分間2Kg荷
重の可撓度(mm)を示す(数値の大きい程可撓度
が大である)。また前記加圧収縮率とは、2Kg/
cm2の荷重を掛けた場合の厚さ寸法の収縮率を言
う。 <発明が解決しようとする問題点> 従来のモルタル工法による接合の問題点は当業
者に周知の如く次のとおりである: (1) 施工が困難で作業性が悪い。 (2) 耐火モルタルの耐食性及び亀裂の発生によ
り、空気巻込みあるいは漏鋼事故を生じ易い。 (3) 気密性(焼結性)の良い耐火モルタルを使用
しているため、使用後に耐火モルタルがノズル
に焼付き新規にノズルを塗着する作業が煩雑で
ある。 また合成樹脂エマルジヨンを結合剤に用いる
耐火パツキングは予熱時の分解ガスによつて作
業環境は悪化する欠点があり改良が要望されて
いる。 本発明は上述の背景に基づきなされたものであ
りその目的とするところは: (1) 施工の作業性が良い (2) 気密性が良く (3) 使用後の焼付けがない 可撓性耐火パツキング材を提供することである。 <課題を解決するための手段> 本発明者らは可撓性耐火パツキング材の特性改
良を試みた結果本発明の開発に成功したものであ
り本発明の構成は無機耐火物粉末と無機繊維およ
び/または有機繊維の100重量部を主原料とし、
これに結合剤として糖液5〜15重量部ヘキシツト
5〜30重量部を添加してなることを特徴とする可
撓性耐火パツキング材にある。 本発明の特徴とするところは結合剤として糖液
とヘキシツトを使用する点にあり、該結合剤の使
用により保形性と保湿性を維持し施工作業性の良
好な可撓性耐火パツキング材を得ることができた
ものである。 本発明において使用される無機耐火物粉末とし
ては、通常耐火物に使用されるマグネシウム、ア
ルミナ、シリカ、粘土、カーボン等の無機耐火物
粉末を使用することができる。 本発明において使用される繊維原料としては無
機繊維を単独に、あるいは有機繊維を単独にまた
は両者を一緒に使用することができ、無機繊維と
してはスラグウール、石綿、ガラス繊維、セラミ
ツクフアイバー等を挙げることでき、有機繊維と
しては木材パルプ、麻糸、綿くず、合成繊維、く
ず等を挙げることができる。無機繊維および有機
繊維の長さは10mm未満であることが混練時の分散
上望ましい。 無機繊維は常温時および中間温度の強度を与え
る作用があるが、該パツキング材の耐食性を低下
させるのでその添加量は30重量部以下とするのが
好ましい。 有機繊維は常温時の強度およびパツキング材に
保形性を与え使用時の燃焼によつて気孔が増加
し、断熱性を向上する作用がある。その添加量は
5重量部以下が好ましく5重量部を超えると使用
時の燃焼によつて気孔を作り気密性が低下し、ま
た組織が脆弱化する等の欠点が生ずる。 結合剤として使用する糖液は糖蜜、水あめ、ハ
チミツ等を1種または2種以上を混合して使用す
ることができる。その添加量は目標の保形性、加
圧収縮性によつて主原料100重量部に対して5〜
15重量部である。 糖液の添加量は多いほど可塑性が増加し可撓性
を増すが、5重量部未満の時は加圧収縮性が充分
でなく、該パツキング材の気密性が得られない。
また15重量部を超えるとパツキング材の保形性が
悪く、施工作業も困難となる。またもう1種の結
合剤として使用するヘキシツトとしては六価アル
コールのD−ソルビツト、D−マンニツト、ズル
シツト等を1種または2種以上を混合して使用す
ることができる。 その添加量は主原料100重量部に対して5〜30
重量部である5重量部未満ではパツキング材の保
湿性が悪く亀裂が発生することもある。また30重
量部を越えるとパツキング材の保形性が悪くそし
て施工後昇温、受鋼時に結合剤消失によるパツキ
ング材組織が脆弱化する等の欠点が発生する。 なおヘキシツトは水溶液として添加することも
できる。また高温の強度を保持させるために小量
の無機質の結合剤、例えば水ガラス、硼酸塩、リ
ン酸塩等を併用することも可能である。 本発明の可撓性耐火パツキング材は上記配合物
を通常のオーガー成形あるいは所定形状の枠に練
土を入れローラーによつて練土表面を整形するロ
ーラー成形等によつて得られる。 可撓性耐火パツキング材の厚さは2〜20mmが好
適である。 加圧収縮性は装着圧力および熱応力に対し、10
〜80%が望ましい、しかしながら使用現場の耐火
物の形状、サイズその他の操業条件に応じて適宜
選定しうるものである。 可撓性耐火パツリング材はそのまま耐火物間の
接合部に嵌合して使用しうるが、離形紙、ポリエ
チレン、ビニールを貼付して保管、組立、作業性
を向上させることができる。 以下に実施例を挙げて本発明の可撓性耐火パツ
キング材を更に説明する。 実施例 1 下記第1表に記載する配合物をハイスピードミ
キサーで混練した練土をローラー成形しパツキン
グ材を得た。得られたパツキング材の諸特性を第
1表に併記する。第1表から明らかな如く、比較
品1は加工収縮性、可撓性は本発明品に近似のも
のであるが、保湿性が悪く、比較品2は保湿性は
良好であるが、加圧収縮性、可撓性が劣る。
<Industrial Application Field> The present invention relates to a fire-resistant packing material that is flexible and shrinkable under pressure. <Prior Art> Conventionally, nozzle stopper systems, slide valve systems, immersion nozzles, etc. have been used to adjust the flow of molten steel in steelmaking and ingot factories. These molten steel flow regulating fireproof structures are used as assembly structures for various fireproof members. Refractory mortar has conventionally been used to join and fix these refractory members. For example, a molten steel pot,
In tundishes and the like, refractory mortar is applied between the slide valve and the nozzle, or between the sleeve and the stopper head, and between the upper part of the stopper and a fixed presser brick, and in the case of a gas-injection type stopper, between the stopper hardware. The applicant has also proposed a fire-resistant packing that is flexible and shrinkable under pressure, which is made by blending synthetic resin emulsion and/or rubber latex as a binder with the main raw materials (Japanese Patent Publication No. 14111/1983). Flexibility refers to the flexibility (mm) of a 2 kg load for 1 minute using a testing machine conforming to ASTM747 with a sample shape of 100 x 40 x 10 mm (the larger the number, the greater the flexibility). In addition, the pressure shrinkage rate is 2Kg/
It refers to the shrinkage rate in the thickness dimension when a load of cm 2 is applied. <Problems to be Solved by the Invention> The problems of joining using the conventional mortar method are as follows, as is well known to those skilled in the art: (1) Construction is difficult and workability is poor. (2) Due to the corrosion resistance of refractory mortar and the occurrence of cracks, air entrainment or steel leakage accidents are likely to occur. (3) Since refractory mortar with good airtightness (sinterability) is used, the refractory mortar seizes onto the nozzle after use, making it complicated to apply a new nozzle. Furthermore, fireproof packing using synthetic resin emulsion as a binder has the disadvantage that the working environment is deteriorated by decomposed gas during preheating, and improvements are desired. The present invention was made based on the above-mentioned background, and its objectives are: (1) Good workability in construction (2) Good airtightness (3) Flexible fireproof packing that does not seize after use It is to provide materials. <Means for Solving the Problems> The present inventors have succeeded in developing the present invention as a result of attempting to improve the characteristics of flexible fireproof packing materials. /or 100 parts by weight of organic fiber as the main raw material,
This flexible fireproof packing material is characterized in that 5 to 15 parts by weight of sugar solution and 5 to 30 parts by weight of hexylate are added as a binder. The present invention is characterized by the use of sugar solution and hexylate as binders, and by using these binders, a flexible fire-resistant packing material that maintains shape retention and moisture retention and has good workability can be produced. That's what I was able to get. As the inorganic refractory powder used in the present invention, inorganic refractory powders such as magnesium, alumina, silica, clay, and carbon, which are normally used for refractories, can be used. As the fiber raw material used in the present invention, inorganic fibers can be used alone, organic fibers can be used alone, or both can be used together. Examples of the inorganic fibers include slag wool, asbestos, glass fiber, ceramic fiber, etc. Examples of organic fibers include wood pulp, hemp thread, cotton waste, synthetic fibers, waste, and the like. It is desirable for the length of the inorganic fibers and organic fibers to be less than 10 mm for dispersion during kneading. Inorganic fibers have the effect of imparting strength at room and intermediate temperatures, but since they reduce the corrosion resistance of the packing material, the amount added is preferably 30 parts by weight or less. Organic fibers provide strength at room temperature and shape retention to the packing material, and when they are burned during use, they increase pores and improve heat insulation. The amount added is preferably 5 parts by weight or less, and if it exceeds 5 parts by weight, pores are created by combustion during use, resulting in a decrease in airtightness and weakening of the structure. The sugar solution used as a binder may be molasses, starch syrup, honey, etc., or a mixture of two or more thereof. The amount added is 5 to 5 parts by weight per 100 parts by weight of the main raw material depending on the target shape retention and pressure shrinkability.
15 parts by weight. The larger the amount of sugar solution added, the greater the plasticity and flexibility, but if it is less than 5 parts by weight, the shrinkability under pressure will not be sufficient and the packing material will not be airtight.
Moreover, if the amount exceeds 15 parts by weight, the packing material will have poor shape retention and construction work will become difficult. As another type of hexylate used as a binder, one type or a mixture of two or more types of hexahydric alcohols such as D-sorbit, D-mannite, and dulcitrate can be used. The amount added is 5 to 30 parts by weight per 100 parts by weight of the main raw material.
If the amount is less than 5 parts by weight, the packing material may have poor moisture retention properties and cracks may occur. If the amount exceeds 30 parts by weight, the packing material will have poor shape retention, and the structure of the packing material will become brittle due to temperature rise after construction and loss of binder during steel receiving. Note that hexite can also be added as an aqueous solution. It is also possible to use a small amount of an inorganic binder, such as water glass, borate, phosphate, etc., in order to maintain the strength at high temperatures. The flexible fireproof packing material of the present invention can be obtained by conventional auger molding of the above-mentioned composition, or roller molding in which clay is placed in a frame of a predetermined shape and the surface of the clay is shaped using a roller. The thickness of the flexible fireproof packing material is preferably 2 to 20 mm. Pressure shrinkage is 10% against mounting pressure and thermal stress.
~80% is desirable, however, it can be selected as appropriate depending on the shape, size, and other operating conditions of the refractory at the site of use. The flexible refractory fitting material can be used as it is by fitting into the joint between refractories, but it can also be attached with release paper, polyethylene, or vinyl to improve storage, assembly, and workability. The flexible fireproof packing material of the present invention will be further explained below with reference to Examples. Example 1 A packing material was obtained by kneading the mixture shown in Table 1 below using a high-speed mixer and roller-molding the dough. Various properties of the obtained packing material are also listed in Table 1. As is clear from Table 1, Comparative Product 1 has processing shrinkage and flexibility similar to the product of the present invention, but has poor moisture retention, while Comparative Product 2 has good moisture retention, but under pressure Poor contractility and flexibility.

【表】 実施例 2 タンデイツシユノズルと浸漬ノズルの間に
150φ×70φ×8m/mの本発明品2を使用したが
嵌合施工性も良くさらに予熱時の悪臭もなくエア
ーシールも良好であつた。 <発明の効果> 本発明の可撓性耐火パツキング材は従来の耐火
パツキング材に比べ ●保形性、保湿性も良く保管中にキレツ発生がな
く良好な施工作業性を保持できる。 ●予熱時の分解ガスによる悪臭がない。 ●保形性については、長期間の保管が確保でき
る。 ●シール性が良好で、使用後の焼付がなく簡単に
処理ができる。
[Table] Example 2 Between the tundish nozzle and the immersion nozzle
Inventive product 2 of 150φ x 70φ x 8m/m was used, and the fitting workability was good, and there was no bad odor during preheating, and air sealing was also good. <Effects of the Invention> Compared to conventional fireproof packing materials, the flexible fireproof packing material of the present invention has better shape retention and moisture retention, and can maintain good workability without cracking during storage. ●No bad odor caused by decomposed gas during preheating. ●For shape retention, long-term storage can be ensured. ●Good sealing properties, no burning after use, and can be easily disposed of.

Claims (1)

【特許請求の範囲】[Claims] 1 無機耐火物粉末と無機繊維および/または有
機繊維の100重量部を主原料としこれに結合剤と
して糖液5〜15重量部、ヘキシツト5〜30重量部
を添加してなることを特徴とする可撓性耐火パツ
キング材。
1 The main raw materials are inorganic refractory powder and 100 parts by weight of inorganic fibers and/or organic fibers, and 5 to 15 parts by weight of sugar solution and 5 to 30 parts by weight of hexylate are added as binders. Flexible fireproof packing material.
JP26607588A 1988-10-24 1988-10-24 Flexible refractory packing material Granted JPH02115688A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26607588A JPH02115688A (en) 1988-10-24 1988-10-24 Flexible refractory packing material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26607588A JPH02115688A (en) 1988-10-24 1988-10-24 Flexible refractory packing material

Publications (2)

Publication Number Publication Date
JPH02115688A JPH02115688A (en) 1990-04-27
JPH0520472B2 true JPH0520472B2 (en) 1993-03-19

Family

ID=17426005

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26607588A Granted JPH02115688A (en) 1988-10-24 1988-10-24 Flexible refractory packing material

Country Status (1)

Country Link
JP (1) JPH02115688A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5707632B2 (en) * 2012-07-06 2015-04-30 日本碍子株式会社 mortar

Also Published As

Publication number Publication date
JPH02115688A (en) 1990-04-27

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