JPH0617273B2 - Method of spraying refractory composition - Google Patents
Method of spraying refractory compositionInfo
- Publication number
- JPH0617273B2 JPH0617273B2 JP60174193A JP17419385A JPH0617273B2 JP H0617273 B2 JPH0617273 B2 JP H0617273B2 JP 60174193 A JP60174193 A JP 60174193A JP 17419385 A JP17419385 A JP 17419385A JP H0617273 B2 JPH0617273 B2 JP H0617273B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- spraying
- refractory
- turning
- water content
- 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
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Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は高密度且つ高強度吹付け旋工体を製造するため
の耐火組成物の吹付け方法に関する。TECHNICAL FIELD The present invention relates to a method for spraying a refractory composition for producing a high-density and high-strength spray-laden body.
［従来の技術］ 従来より不定形耐火物の吹付け旋工方法が流し込み旋工
あるいはスタンプ旋工の困難な旋工場所に使用されてい
る。吹付け旋工方法は旋工枠が不要であり、それによっ
てコストを低減することができ、作業能率が高く、熱間
旋工が容易である等の利点をもち広く実施されている。
この吹付け旋工方法は乾式吹付け方法と湿式吹付け方法
に大別することができるが、両方法とも特公昭51−9770
号公報、特開昭51−109008号公報及び特開昭51−58723
号公報に提唱された超微粉及び分散剤を活用する高密度
流し込み材やスタンプ材と比較して多量の旋工水分量を
必要とするために、吹付け旋工により得られた耐火旋工
体は気孔率が大きく、低密度であり、且つ強度も劣るも
のである。[Prior Art] Conventionally, a method of spraying an irregular shaped refractory has been used in a turning place where casting or stamping is difficult. The spray turning method does not require a turning frame, which can reduce the cost, has high working efficiency, and facilitates hot turning, and is widely used.
This spraying method can be roughly classified into a dry spraying method and a wet spraying method, and both methods are disclosed in Japanese Patent Publication No.
JP-A-51-109008 and JP-A-51-58723
Since a large amount of water for turning is required as compared with high-density casting materials and stamp materials that utilize the ultrafine powder and dispersant proposed in Japanese Patent Publication, a fire-resistant turning body obtained by spray turning Has high porosity, low density, and poor strength.
吹付け旋工方法の旋工水分量を減少する方法として、特
開昭58−24785号公報には吹付け材料に界面活性剤を添
加して旋工することによりなる乾式吹付け旋工法が提唱
されているが、この方法でも１０％以上の旋工水分量が
必要であり、大巾な品質改善を達成するまでには至って
いない。As a method of reducing the water content of the turning in the spray turning method, JP-A-58-24785 proposes a dry spray turning method in which a surfactant is added to a spray material and then the turning is performed. However, even with this method, a turning water content of 10% or more is required, and a significant improvement in quality has not been achieved.
［発明が解決しようとする問題点］ また、上述の特公昭51−9770号公報、特開昭51−109008
号公報及び特開昭51−58723号公報に提唱された高密度
流し込み材の超微粉及び分散剤の活用方法を吹付材へ適
用する方法が考慮されたが、乾式吹付け法では上記界面
活性剤を使用する方法と同様に吹付けノズルで添加する
旋工水分と吹付材との混合、混練時間が非常に短時間で
あるために充分な減水効果が得られず、吹け付旋工体の
大巾な品質改善は期待できない。[Problems to be Solved by the Invention] Further, the above-mentioned Japanese Patent Publication No. 51-9770 and JP-A No. 51-109008.
The method of applying the method of utilizing the ultrafine powder of the high-density casting material and the dispersant proposed in JP-A-51-58723 and JP-A-51-58723 to the spraying material was considered, but in the dry spraying method, the above surfactant was used. Similar to the method using, the mixing and mixing time of the turning water added by the blowing nozzle and the blowing material is very short, so a sufficient water reduction effect cannot be obtained, and the No significant quality improvement can be expected.
一方、超微粉及び分散剤を添加した吹付材を湿式吹付け
法で旋工する場合には、旋工水分量の全量の水分予め吹
付材が混練されているものであるために、分散剤の効果
は充分に得られるが、高密度流し込み材と同等の旋工水
分量では、混練した吹付材の粘性が高いために材料ホー
スによる圧送が困難であり、吹付け旋工を行なうことが
できない。このため、旋工水分量を高密度流し込み材よ
りも多くする必要があるために吹付け旋工体の品質も若
干の改善しか期待できない。On the other hand, when the spraying material to which the ultrafine powder and the dispersant are added is rotated by the wet spraying method, the spraying material is mixed in advance for the entire amount of the water content of the rotating water. Although the effect is sufficiently obtained, when the turning water content is the same as that of the high-density casting material, the kneading spray material has a high viscosity, so that it is difficult to carry out the pressure feeding by the material hose, and the spray turning cannot be performed. Therefore, it is necessary to increase the amount of water for turning to be higher than that of the high-density cast material, so that the quality of the sprayed turning body can be expected to be only slightly improved.
［問題点を解決するための手段］ 本発明は上記問題点を解決し、吹付け旋工方法における
旋工水分量を減少し、高密度且つ高強度の吹付け旋工体
を得ることを目的とするものである。[Means for Solving Problems] An object of the present invention is to solve the above problems, reduce the amount of water for turning in a blowing turning method, and obtain a high-density and high-strength blowing turning body. It is what
従って、本発明は焼成耐火粘土、ボーキサイト、シリマ
ナイト、ムライト、アルミナ、炭化珪素、マグネシア及
びクロマイトからなる群より選択された耐火骨材の１種
または２種以上を９３〜６０重量％、粘土、カオリン、
微粉シリカ、微粉アルミナ、微粉マグネシア及び微粉炭
化珪素からなる群より選択された５０μ以下の耐火超微
粉５〜３０重量％、水硬性アルミナセメント１〜１０重
量％、及びアルカリ金属リン酸塩及びアルカリ金属ポリ
リン酸塩からなる群から選択された分散剤の１種または
２種以上を０.0１〜０.5重量％含有してなる耐火組成物
と硬化促進剤とを吹付け旋工する吹付け旋工方法におい
て、旋工水分量の１／５〜３／４の水分と前記耐火組成
物とを予めミキサーで混練し、乾式吹付けガンに圧送
し、前記混練した耐火組成物に旋工水分量の残量の水分
及び硬化促進剤としてのＣａ（ＯＨ）２よりなる懸濁液
を乾式吹付けガンの吹付けノズルで添加し、全旋工水分
量が４〜１０重量％であることを特徴とする耐火組成物
の吹付け方法を提供するにある。Accordingly, the present invention provides 93-60 wt% of one or more refractory aggregates selected from the group consisting of fired refractory clay, bauxite, sillimanite, mullite, alumina, silicon carbide, magnesia and chromite, clay, kaolin. ,
5 to 30% by weight of refractory ultrafine powder of 50 μ or less selected from the group consisting of finely divided silica, finely divided alumina, finely divided magnesia, and finely divided silicon carbide, 1 to 10% by weight of hydraulic alumina cement, and alkali metal phosphate and alkali metal A spraying method for spraying a refractory composition containing one or more dispersants selected from the group consisting of polyphosphates in an amount of 0.01 to 0.5% by weight and a curing accelerator. In the working method, 1/5 to 3/4 of the water content of the turning water and the refractory composition are kneaded in advance with a mixer, and the mixture is pressure-fed to a dry spray gun so that the kneaded refractory composition has the turning water content. A suspension consisting of the remaining amount of water and Ca (OH) 2 as a curing accelerator is added by a spray nozzle of a dry spray gun, and the total amount of water to be turned is 4 to 10% by weight. A method for spraying a refractory composition is provided. There is
［作用］ 本発明方法に使用する耐火骨材としては焼成耐火粘土、
ボーキサイト、シリマナイト、ムライト、アルミナ、炭
化珪素、マグネシア、クロマイト等が挙げられる。耐火
骨材の添加配合量は９３〜６０重量％が好ましく、耐火
骨材の添加配合量が９３重量％を超えると吹付け時に適
正な粘性が得られないため好ましくなく、また６０重量
％未満であると低気孔率化（高密度化）が困難であるた
め好ましくない。なお、上述の耐火骨材は１種または２
種以上を併用して使用することができる。[Operation] Fire-resistant aggregates used in the method of the present invention include fired fire-resistant clay,
Examples thereof include bauxite, sillimanite, mullite, alumina, silicon carbide, magnesia, chromite and the like. The addition amount of the refractory aggregate is preferably 93 to 60% by weight, and when the addition amount of the refractory aggregate exceeds 93% by weight, proper viscosity cannot be obtained at the time of spraying, which is not preferable. If so, it is difficult to reduce the porosity (increasing the density), which is not preferable. In addition, the above-mentioned refractory aggregate is one kind or two.
One or more species can be used in combination.
耐火超微粉としては粘土、カオリン、微粉シリカ、微粉
アルミナ、微粉マグネシア、微粉炭化珪素等が挙げられ
る。耐火超微粉の粒度は５０μ以下のものが好ましい。
耐火超微粉の添加配合量は５〜３０重量％が好ましく、
耐火超微粉の添加配合量が３０重量％を超えると高密度
化が困難であるため好ましくなく、また５重量％未満で
あると高密度化が困難であるとともに、吹付け時に適正
な粘性が得られないため好ましくない。なお、上述の耐
火超微粉は１種または２種以上を併用して使用すること
ができる。Examples of the refractory ultrafine powder include clay, kaolin, fine silica, fine alumina, fine magnesia, and fine silicon carbide. The particle size of the ultrafine refractory powder is preferably 50 μm or less.
The additive amount of the refractory ultrafine powder is preferably 5 to 30% by weight,
If the addition amount of the refractory ultrafine powder exceeds 30% by weight, it is not preferable because the densification is difficult, and if it is less than 5% by weight, the densification is difficult and an appropriate viscosity is obtained during spraying. It is not preferable because it is not possible. The above-mentioned ultrafine refractory powder can be used alone or in combination of two or more.
耐火組成物に使用する水硬性アルミナセメントの添加配
合量は１〜１０重量％が好ましく、水硬性アルミナセメ
ントの添加配合量が１０重量％を越えると耐食性が低下
するため好ましくなく、また１重量％未満であると高強
度化が困難であるため好ましくない。The addition amount of the hydraulic alumina cement used for the refractory composition is preferably 1 to 10% by weight, and if the addition amount of the hydraulic alumina cement exceeds 10% by weight, the corrosion resistance decreases, which is not preferable. If it is less than the above range, it is difficult to increase the strength, which is not preferable.
また、分散剤として使用するアルカリ金属リン酸塩及び
アルカリ金属ポリリン酸塩は例えばウルトラポリリン酸
ソーダ、ヘキサメタリン酸ソーダ等が挙げられる。分散
剤の添加配合量は0.０１〜０.5重量％が好ましく、分散
剤の添加配合量が０.5重量％を超えると分散効果が低下
するために好ましくなく、また０.0１重量％未満である
と適正な解膠効果が得られないため好ましくない。な
お、上述の分散剤は１種または２種以上を併用して使用
することができる。Examples of the alkali metal phosphate and the alkali metal polyphosphate used as the dispersant include sodium ultrapolyphosphate and sodium hexametaphosphate. The addition amount of the dispersant is preferably 0.01 to 0.5% by weight, and when the addition amount of the dispersant exceeds 0.5% by weight, the dispersing effect is deteriorated, which is not preferable. If it is less than this, an appropriate peptizing effect cannot be obtained, which is not preferable. The above-mentioned dispersants can be used alone or in combination of two or more.
上述の配合をもつ耐火組成物に必要旋工水分量の１／５
〜３／４の水分を添加してミキサーで予め混練すること
によって超微粉、水硬性アルミナセメントが一部分散状
態となり、ノズルで旋工水分量の残部を添加する時の短
時間の混合、混練でも完全に分散効果が得られた状態と
なり、低水分量の吹付け旋工が可能となる。1/5 of the amount of water required for turning in a refractory composition having the above composition
By adding ~ 3/4 of the water and kneading in advance with a mixer, the ultrafine powder and hydraulic alumina cement are partly dispersed, and even when mixing and kneading for a short time when the remainder of the turning water content is added with a nozzle. The dispersion effect is completely obtained, and spray lathing with a low water content is possible.
なお、予めミキサーに添加、混練する水分量が必要旋工
水分量の１／５未満であると、充分な分散効果が得られ
ない。また、３／４を超えると、予めミキサーで混練さ
れた耐火組成物が高粘性となるため、乾式吹付けガンで
の圧送が困難となる。If the amount of water to be added and kneaded to the mixer in advance is less than ⅕ of the required amount of water for rotation, a sufficient dispersion effect cannot be obtained. On the other hand, when it exceeds 3/4, the refractory composition that has been kneaded in advance with a mixer has a high viscosity, so that it becomes difficult to carry out pressure feeding with a dry spray gun.
また、ノズルで添加される旋工水分の残部との溶液であ
る硬化促進剤の効果により吹付け旋工体が流動崩壊する
ことなく旋工することができる。Further, due to the effect of the curing accelerator, which is a solution with the balance of the turning water added by the nozzle, the sprayed turning body can be turned without fluid collapse.
また、ノズルで添加される硬化促進剤としては例えばＣ
ａ（ＯＨ）２等を挙げることができ、硬化促進剤の添加
配合量は０.0１〜２重量％が好ましい。硬化促進剤の添
加配合量が０0.１重量％未満であると、硬化速度が遅
く、吹付け旋工体の流動崩壊し、また、添加配合量が２
重量％を超えると硬化が速く、吹付け旋工体組織が層状
となり好ましくない。The curing accelerator added by the nozzle is, for example, C
Examples thereof include a (OH) 2 and the addition amount of the curing accelerator is preferably 0.01 to 2% by weight. If the addition amount of the curing accelerator is less than 0.1% by weight, the curing speed will be slow and the sprayed lathe will be fluidized and disintegrated.
If it exceeds 5% by weight, curing is fast and the structure of the spray-laundered body becomes layered, which is not preferable.
なお、本発明方法の全旋工水分量は４〜１０％が好まし
い。全旋工水分量が４％以未満であると適正な粘性が得
られないために好ましくなく、また、１０％を超えると
高密度化が困難であるために好ましくない。In addition, the total amount of water content in the process of the present invention is preferably 4 to 10%. It is not preferable that the total turning water content is less than 4% because proper viscosity cannot be obtained, and if it exceeds 10%, it is not preferable because densification is difficult.
［実施例］ 実施例１ 以下の第１表に記載する配合割合をもつ耐火組成物を本
発明吹付け法、従来乾式吹付け法及び従来吹付け法で鉄
製垂直パネルに１５０mmの旋工厚で吹付けた。Example 1 A refractory composition having a blending ratio shown in Table 1 below was applied to an iron vertical panel by a spraying method of the present invention, a conventional dry spraying method, and a conventional spraying method at a turning thickness of 150 mm. Sprayed.
得られた吹付け旋工体の特性を第２表に併記する。The properties of the obtained spray-wound body are also shown in Table 2.
上述の第１表からも明らかなように本発明方法により得
られた吹付け旋工体は見掛気孔率が低く、緻密な旋工体
であり、また曲げ強さも従来乾式吹付け法及び従来吹付
け法と比較してほぼ２倍以上となった。 As is clear from Table 1 above, the spray-spun body obtained by the method of the present invention has a low apparent porosity and is a dense spinner body, and the bending strength is also the conventional dry-spraying method and the conventional one. Compared with the spray method, it was almost twice as much.
［発明の効果］ 本発明方法により以下の効果が得られる： (1)従来法と比べて旋工水分量を大巾に低減できるため
に高密度且つ高強度の吹付け旋工体が得られる。[Effects of the Invention] The following effects can be obtained by the method of the present invention: (1) A high-density and high-strength sprayed turning body can be obtained because the water content of turning can be greatly reduced compared to the conventional method. .
(2)高温でガラス化しやすい結合剤（例えばアルミナセ
メント等）の配合割合を従来吹付材よりも減少しても高
密度且つ高強度の旋工体が得られるので耐食性が向上す
る。(2) Even if the blending ratio of a binder (such as alumina cement) that easily vitrifies at high temperature is reduced as compared with the conventional sprayed material, a high-density and high-strength lathe can be obtained, so that the corrosion resistance is improved.
(3)予備混練してあるので吹付け旋工体の組織が均一に
なる。(3) Since it is pre-kneaded, the structure of the sprayed lathe becomes uniform.
(4)予備混練してあるので吹付け時に発塵が極めて少な
い。(4) Since it is pre-kneaded, it produces very little dust during spraying.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−111973（ＪＰ，Ａ) 特開 昭61−236657（ＪＰ，Ａ) 特開 昭49−71008（ＪＰ，Ａ) 特開 昭57−209890（ＪＰ，Ａ) 特開 昭58−223672（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP 61-111973 (JP, A) JP 61-236657 (JP, A) JP 49-71008 (JP, A) JP 57- 209890 (JP, A) JP 58-223672 (JP, A)
Claims (1)
ト、ムライト、アルミナ、炭化珪素、マグネシア及びク
ロマイトからなる群より選択された耐火骨材の１種また
は２種以上を９３〜６０重量％、粘土、カオリン、微粉
シリカ、微粉アルミナ、微粉マグネシア及び微粉炭化珪
素からなる群より選択された５０μ以下の耐火超微粉５
〜３０重量％、水硬性アルミナセメント１〜１０重量
％、及びアルカリ金属リン酸塩及びアルカリ金属ポリリ
ン酸塩からなる群から選択された分散剤の１種または２
種以上を０.0１〜０.5重量％含有してなる耐火組成物と
硬化促進剤とを吹付け施工する吹付け施工方法におい
て、施工水分量の１／５〜３／４の水分と前記耐火組成
物とを予めミキサーで混練し、乾式吹付けガンに圧送
し、前記混練した耐火組成物に施工水分量の残量の水分
及び硬化促進剤としてのＣａ（ＯＨ）２よりなる懸濁液
を乾式吹付けガンの吹付けノズルで添加し、全施工水分
量が４〜１０重量％であることを特徴とする耐火組成物
の吹付け方法。Claims: 1. Fire-retardant clay, bauxite, sillimanite, mullite, alumina, silicon carbide, magnesia and chromite 93-60% by weight of one or more refractory aggregates selected from the group consisting of clay, kaolin. , Refractory ultrafine powder of 50 μ or less selected from the group consisting of fine silica, fine alumina, fine magnesia and fine silicon carbide.
-30% by weight, hydraulic alumina cement 1-10% by weight, and one or two dispersants selected from the group consisting of alkali metal phosphates and alkali metal polyphosphates.
In a spraying method of spraying a refractory composition containing 0.01 to 0.5% by weight of one or more of the above and a curing accelerator, the water content is 1/5 to 3/4 of the water content of the construction and the above. The refractory composition is kneaded in advance with a mixer, and the mixture is pressure-fed to a dry spraying gun, and the kneaded refractory composition is a suspension composed of residual amount of water for construction and Ca (OH) 2 as a hardening accelerator. Is added by a spraying nozzle of a dry spraying gun, and the total construction water content is 4 to 10% by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60174193A JPH0617273B2 (en) | 1985-08-09 | 1985-08-09 | Method of spraying refractory composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60174193A JPH0617273B2 (en) | 1985-08-09 | 1985-08-09 | Method of spraying refractory composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6236071A JPS6236071A (en) | 1987-02-17 |
| JPH0617273B2 true JPH0617273B2 (en) | 1994-03-09 |
Family
ID=15974350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60174193A Expired - Fee Related JPH0617273B2 (en) | 1985-08-09 | 1985-08-09 | Method of spraying refractory composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0617273B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006046895A (en) * | 2004-07-06 | 2006-02-16 | Kurosaki Harima Corp | Construction method of indeterminate form refractory |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0333068A (en) * | 1988-12-23 | 1991-02-13 | Shinagawa Refract Co Ltd | Monolithic refractories for spraying |
| JP2527945Y2 (en) * | 1989-02-03 | 1997-03-05 | 株式会社アイジー技術研究所 | Joint cover attachment |
| JPH0925175A (en) * | 1995-05-11 | 1997-01-28 | Asahi Glass Co Ltd | Method for spraying castable refractory |
| US5783510A (en) * | 1995-07-04 | 1998-07-21 | Asahi Glass Company Ltd. | Monolithic refractory composition wall |
| EP0798279B1 (en) * | 1996-03-27 | 2000-03-08 | Taiko Refractories Co., Ltd. | Wet-gunning method |
| BR9809644A (en) * | 1997-05-17 | 2000-07-11 | Vesuvius Uk Limited | Fusible refractory compositions |
| FR2798091B1 (en) * | 1999-09-06 | 2001-11-16 | Lafarge Refractories | METHOD OF SPRAYING CONCRETE BY DRY WAY, SPRAY LANCE AND WET RING THEREFOR |
| TWI241996B (en) * | 2001-01-16 | 2005-10-21 | Plibrico Japan Company Ltd | Spray method for monolithic refractories |
| JP4664885B2 (en) * | 2006-09-19 | 2011-04-06 | 黒崎播磨株式会社 | Non-slump type ultra-low cement bond castable composition and its construction method |
| CN102826864B (en) * | 2012-09-13 | 2013-09-25 | 武汉钢铁(集团)公司 | Composite-material molten iron desulfurization spray gun and preparation technique thereof |
| RU2610015C1 (en) * | 2015-12-07 | 2017-02-07 | Юлия Алексеевна Щепочкина | Refractory concrete mixture |
| RU2615007C1 (en) * | 2016-03-10 | 2017-04-03 | Общество с ограниченной ответственностью "ОгнеупорПром" | Composition for lightweight refractory production |
| CN107043246A (en) * | 2017-02-08 | 2017-08-15 | 焦作金鑫恒拓新材料股份有限公司 | A kind of hot semidry method spray paint of mixed iron blast |
| CN107235733B (en) * | 2017-05-27 | 2018-09-25 | 巩义市金利炉料厂 | A kind of slag adhesion spray paint |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61111973A (en) * | 1984-10-31 | 1986-05-30 | 黒崎窯業株式会社 | Spray method for refractory spray material |
| JPS61236657A (en) * | 1985-04-13 | 1986-10-21 | 黒崎窯業株式会社 | Spray method for refractory spray material |
-
1985
- 1985-08-09 JP JP60174193A patent/JPH0617273B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006046895A (en) * | 2004-07-06 | 2006-02-16 | Kurosaki Harima Corp | Construction method of indeterminate form refractory |
| JP4575852B2 (en) * | 2004-07-06 | 2010-11-04 | 黒崎播磨株式会社 | Construction method of irregular refractories |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6236071A (en) | 1987-02-17 |
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