JPH0422865B2 - - Google Patents

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Publication number
JPH0422865B2
JPH0422865B2 JP58502692A JP50269283A JPH0422865B2 JP H0422865 B2 JPH0422865 B2 JP H0422865B2 JP 58502692 A JP58502692 A JP 58502692A JP 50269283 A JP50269283 A JP 50269283A JP H0422865 B2 JPH0422865 B2 JP H0422865B2
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JP
Japan
Prior art keywords
fibers
weight
composition according
refractory
short
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 - Lifetime
Application number
JP58502692A
Other languages
English (en)
Other versions
JPS59501406A (ja
Inventor
Koorin Ritsuchimondo
Maikeru Edowaado Benetsuto
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.)
Morgan Refractories Ltd
Original Assignee
Morgan Refractories 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 Morgan Refractories Ltd filed Critical Morgan Refractories Ltd
Publication of JPS59501406A publication Critical patent/JPS59501406A/ja
Publication of JPH0422865B2 publication Critical patent/JPH0422865B2/ja
Granted legal-status Critical Current

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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
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  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ceramic Products (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Description

請求の範囲 １ 耐火骨材及び耐火粘土結合剤を含有してなる
耐火ライニング成形用現場焼成組成物において、
該組成物が0.1重量％までの加水分解生物質及び
0.1重量％までの有機短繊維を含有することを特
徴とする耐火ライニング成形用現場焼成組成物。 ２ 加水分解性物質が金属微粉である請求の範囲
第１項記載の組成物。 ３ 金属微粉がアルミニウムである請求の範囲第
２項記載の組成物。 ４ 金属微粉がマグネシウムあるいは亜鉛あるい
は珪素鉄である請求の範囲第２項記載の組成物。 ５ 加水分解性物質の量が約0.05重量％である請
求の範囲第１項ないし第４項のいずれが１項に記
載の組成物。 ６ 有機短繊維が親水性繊維である請求の範囲第
１項ないし第５項のいずれか１項に記載の組成
物。 ７ 有機短繊維が長さ約６mmのものである請求の
範囲第１項なしい第６項のいずれか１項に記載の
組成物。 ８ 有機短繊維が太さ40ミクロン以下のものであ
る請求の範囲第１項ないし第７項のいずれか１項
に記載の組成物。 ９ 有機短繊維が太さ20〜25ミクロンのものであ
る請求の範囲第８項記載の組成物。 １０ 有機繊維がポリプロプレン繊維である請求
の範囲第６項ないし第９項のいずれか１項に記載
の組成物。 １１ 有機短繊維の量が約0.05重量％である請求
の範囲第１項ないし第１０項のいずれか１項に記
載の組成物。 １２ 硬化剤として水硬セメントを含有してなる
請求の範囲第１項ないし第１１項のいずれが１項
に記載の組成物。 明細書 本発明は耐火ライニングを成形するための現場
焼成組成物に関し、特に耐スポーリング性を改善
するための前記組成物への添加剤に関する。 現場焼成耐火ライニングを形成するために必要
な時間を短縮するために前記ライニングの耐スポ
ーリング性を改善する必要がある。スポーリング
は本質的には前記ライニングが硬化する時に水が
該ライニングから逸出することができないために
生ずるのである。より短時間で使用できる耐火物
ライニングの製造による「停止時間」のこの短縮
は急速焼成技法と呼ばれる。 現場焼成耐火組成物の耐スポーリング性を改善
するために、例えば英国特許第1541819号明細書
に記述されているようなアルミニウム微粉の使用
のような種々の添加剤が提唱されている。別法と
して有機短繊維、好ましくは親水性有機短繊維の
使用か提唱されている。これら両添加剤は耐スポ
ーリング性を改善するために有効であるが、しか
しこれらの両添加剤により得られる改善は限られ
たものである欠点がある。過剰割合のアルミニウ
ム粉末を添加すると組成物がアルカリ性であるた
めに硬化工程中に許容できない量の水素が放出さ
れる。また過剰量の有機短繊維を添加すると未硬
化組成物すなわち生組成物の強度及び流れ特性に
悪影響を与える。 我々は驚くことに両添加剤の比較的少量の添加
が各々の添加剤単独で得られる耐スポーリング性
の改善よりも大きい耐スポーリング性の改善を生
ずることを見い出した。 本発明による現場焼成耐火ライニング形成用組
成物は耐火骨材、耐火粘土結合剤、加水分解性物
質及び有機短繊維を含有する。前記加水分解性物
質は水と反応し、１個または３個以上の水素−酸
素結合を切断し、固体状及び／またはガス状の反
応生成物を生ずる物質を意味する。 加水分解性物質は混合された不焼成ライニング
の水含量の減少を助ける作用があり、短繊維は焼
成前に前記ライニングの水を運び出す作用があ
り、且つ焼成中に短繊維は焼き払われてライニン
グ中に微細な毛細管を残し、水蒸気相及びスチー
ムの逸出を可能にし、且つ促進する。 本発明の好適な実施態様において加水分解性物
質は0.1重量％までの金属微粉であり、有機短繊
維は0.1重量％までの親水性繊維である。 好適な金属微粉はアルミニウム粉末であるがマ
グネシウム、亜鉛及び珪素鉄のような他の金属も
使用できる。また現場焼成の際ガスを発生する窒
化物及び炭化物のような他の反応性物質が親水性
物質として金属粉末の代りに有効である。前記繊
維は長さ約６mmのものであり、短い繊維は硬化が
より短く、また前記長さよりはるかに長い繊維は
混合時に問題となる。該繊維は好ましくは40ミク
ロン（μ）以下の太さを持ち、前記よりはるかに
太い繊維は必要とする効果を得るために大量の繊
維を必要とするために適当ではなく、最適の繊維
の太さは20〜25μである。前記繊維は親水性のも
のが好ましい。 以下に例を挙げて本発明を説明する。 73重量部の骨材及び微粉形態のボーキサイド；
10重量部のアルミナ微粉；５重量部の藍晶（カイ
アナイト）；４重量部の粘土結合剤及び８重量部
の硬化剤（水硬セメント）よりなる耐火混合物
100重量部に耐火混合物0.2重量部の解膠剤と７重
量％の水とを添加し、固体100重量部毎に水７重
量部を含有する組成物を製造した。 少なくとも純度99％のアルミニウム微粉及び／
または直径22.7μ、平均長６mmポリプロピレンモ
ノフイラメント繊維を次表に示す種々の割合で添
加した。 得られた混合物から76mm立方体の形態の試料を
造り、24時間硬化し、次に各タイプの一連の試料
を一連の次第に高めた温度の実験炉へ挿入し、試
料のスポーリングが生ずる最初の温度を記録し
た。
【表】 ニウム
【表】 にスポーリング
アルミニウム量か例６及び８のように0.1重量
％に多くなると水素発生量は多過ぎ、焼成時に発
火及び爆発の危険が生ずる。 繊維量が例４のように１重量％あるいはそれ以
上の場合、混合物の流れ特性及び混合物性が低下
し、不均一な繊維の分散及び成形の問題を生ず
る。これらの問題は混合物の水含量を増加するこ
とによつて部分的に除去できるがしかしこの水含
量の増加は耐火物の特性に他の有害な影響を与え
る。 亜鉛は金属として使用できるが、しかし亜鉛の
存在は用途によつては焼成耐火物中で溶融する問
題を生ずることがある。 選択した繊維はいかなる残留物をも残すことな
しに250℃で完全に分解しなければならない。す
なわち熱分解に際して大量の炭化残留物を残すポ
リアミド類のような物質により炭化水素重合体繊
維の方が好適である。 本発明の混合物は今までに開示された繊維含量
よりも少ない繊維添加含量を使用することによつ
て繊維の添加による混合物の脆化の影響を最小限
にし、それ故混合物の流れ特性を回復するために
付加量の水を添加する必要が回避される利点を持
つ。
JP58502692A 1982-08-20 1983-08-15 耐火組成物 Granted JPS59501406A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8223995 1982-08-20
GB8223995 1982-08-20

Publications (2)

Publication Number Publication Date
JPS59501406A JPS59501406A (ja) 1984-08-09
JPH0422865B2 true JPH0422865B2 (ja) 1992-04-20

Family

ID=10532426

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58502692A Granted JPS59501406A (ja) 1982-08-20 1983-08-15 耐火組成物

Country Status (7)

Country Link
US (1) US4588442A (ja)
EP (1) EP0116583B1 (ja)
JP (1) JPS59501406A (ja)
AU (1) AU560597B2 (ja)
DE (1) DE3365448D1 (ja)
WO (1) WO1984000747A1 (ja)
ZA (1) ZA836126B (ja)

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US4759533A (en) * 1986-08-11 1988-07-26 Dresser Industries, Inc. Heat-insulating boards
LU87550A1 (fr) * 1989-06-30 1991-02-18 Glaverbel Procede de formation d'une masse refractaire sur une surface et melange de particules destine a ce procede
US5229337A (en) * 1989-06-30 1993-07-20 Glaverbel Composition of matter for use in a process of forming a porous refractory mass
US5073525A (en) * 1989-10-23 1991-12-17 Quigley Company, Inc. Lightweight tundish refractory composition
GB9022374D0 (en) * 1990-10-16 1990-11-28 Foseco Int Composition and method for producing fired refractory articles
US5338712A (en) * 1993-02-04 1994-08-16 Timmino Ltd. Production of non-explosive fine metallic powders
US20080274870A1 (en) * 2005-05-30 2008-11-06 Refractory Intellectual Property Gmbh & Co. Kg Refractory Ceramic Product

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Publication number Priority date Publication date Assignee Title
US1374910A (en) * 1918-05-31 1921-04-19 Lava Crucible Company Of Pitts Method of making clay and graphite crucibles
JPS4931535A (ja) * 1972-07-22 1974-03-22
JPS5249406B2 (ja) * 1972-10-06 1977-12-17
SE380251B (sv) * 1973-11-26 1975-11-03 Hoeganaes Ab Eldfast massa anvendbar for gjutning, rammning eller stampning av ugnsinfodringar och for tillverkning av tappnings- eller gjutrerror for smelta metaller
BE826610A (fr) * 1974-04-02 1975-06-30 Garnissage exothermique pour applications metallurgiques
JPS51116119A (en) * 1975-04-04 1976-10-13 Nittetsu Kinzoku Kogyo Kk Heating type inside lining material of pouring basin
JPS6035317B2 (ja) * 1976-11-26 1985-08-14 大光炉材株式会社 不定形耐火物
JPS5650172A (en) * 1979-09-28 1981-05-07 Harima Refractories Co Ltd Formless refractories
JPS5933549B2 (ja) * 1980-11-10 1984-08-16 大光炉材株式会社 不定形耐火物
US4419454A (en) * 1981-12-14 1983-12-06 The Babcock & Wilcox Company Rapid-fire refractories
US4400335A (en) * 1981-12-15 1983-08-23 Hoganas Ab Process for repairing refractory linings

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988005799A1 (fr) * 1987-02-09 1988-08-11 Mitsui Petrochemical Industries, Ltd. Materiau de moulage en feuilles et stratifie pour moulages contenant une couche composee dudit materiau

Also Published As

Publication number Publication date
ZA836126B (en) 1984-04-25
EP0116583B1 (en) 1986-08-20
DE3365448D1 (en) 1986-09-25
JPS59501406A (ja) 1984-08-09
US4588442A (en) 1986-05-13
WO1984000747A1 (en) 1984-03-01
AU560597B2 (en) 1987-04-09
EP0116583A1 (en) 1984-08-29
AU1882383A (en) 1984-03-07

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