JPS59501406A - 耐火組成物 - Google Patents

耐火組成物

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JPS59501406A
JPS59501406A JP58502692A JP50269283A JPS59501406A JP S59501406 A JPS59501406 A JP S59501406A JP 58502692 A JP58502692 A JP 58502692A JP 50269283 A JP50269283 A JP 50269283A JP S59501406 A JPS59501406 A JP S59501406A
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fibers
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weight
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JPH0422865B2 (ja
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リツチモンド・コ−リン
ベネツト・マイケル・エドワ−ド
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モ−ガン・リフラクトリ−ズ・リミテツド
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Abstract

(57)【要約】本公報は電子出願前の出願データであるため要約のデータは記録されません。

Description

【発明の詳細な説明】 耐火組成物 本発明は耐火ライニングを形成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０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〇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ｔよ４Ｉｔｇｉｔ号明ｌ１ａｌ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糧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が提唱さ 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０ 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。また過鯛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。
我々は薄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個またはコ個以上の水素−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ｏ、ｉ重量％までの金属微粉 であり、有機短繊維はｏ、ｉ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累でちるがマグネシウム、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４ｉｍのものであり、短い繊維は効果がより短く、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１しくはダθ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二〇〜２Ｓ μ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ト：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＊０．ユ重量部の解膠剤と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。
少なくとも純度デデチのアルミニウム微粉及び／または直径−一、７μ、平均長 ６顛のポリプロピレン七ノフィ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７６８１１立方体の形態の試料を造り、２４Ｌ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０表 １　基準混合物−添加剤なし　６θ０’Ｃコ　０．Ｏ！チ繊維　ｔｏｏ℃ Ｊ　Ｏ，０７Ｌ；チ繊維　ＳＯＯ℃ ダ　θ、ｌチ　繊維　ｔｏｏ℃ ｚ　ｏ、ｏｓ％アル１ニウム　４００℃４　０．１％　７＃ミニウｊＡ　１００ ℃１　０、θ５チ繊維１　ｏ、ｌチアルミニウム　９００℃アルミニウム量が例 ６及びＳのようにθ、７重量％ＩＣ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。
繊維量が例ダのように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っ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っては焼成耐火物 中で溶融する問題を生ずることがちる。
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 ような物質より炭化水素重合体繊維の方が好適である。
不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 することによって繊維の添加による混合物の脆化の影響を最少限にし、それ放湿 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。
国際調査報告

Claims (1)

    【特許請求の範囲】
  1. １．耐火ライニング形成用現場焼成組成物において、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してなる債嫡号−４耐火うイニング用現 場焼成組成物。 λ　加水分解性物質がｏ、ｉ重量％までの金属微粉である請求の範囲第１項記載 の組成物。 ３、金属微粉が少なくとも純度９９％のアルミニウム微粉である請求の範囲第二 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二 項記載の組成物。 ５、有機短繊維が０．１重量％までの親水性繊維である請求の範囲第１項ないし 第グ項のいずれかに記載の組成物。 ６、有機短繊維が長さ約６闘のものである請求の範囲第１項ないし第５項のいず れかに記載の組成物。 ７、　有機繊維が太さダ０ミクロン以下のものである請求の範囲第３項または第 ６項記載の組成物。 ８、有機繊維が太さ２０−２３ミクロンのものである請求の範囲第７項記載の組 成物。 ９、親水性有機繊維がポリプロピレン繊維である請求の範囲第３項または請求の 範囲第５項に従属する請求の範囲第６項ないし第ｇ項のいずれかに記載の組成物 。 １０、実質的に上述または例に示すような耐火ライニング用現場焼成組成物・
JP58502692A 1982-08-20 1983-08-15 耐火組成物 Granted JPS59501406A (ja)

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

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

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JP58502692A Granted JPS59501406A (ja) 1982-08-20 1983-08-15 耐火組成物

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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
EP0301103A4 (en) * 1987-02-09 1989-07-20 Mitsui Petrochemical Ind Sheet-like molding material and laminate for molding containing the material as one layer.
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
CN101189198A (zh) * 2005-05-30 2008-05-28 里弗雷克特里知识产权两合公司 耐火陶瓷制品

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5046525A (ja) * 1972-10-06 1975-04-25
JPS51116119A (en) * 1975-04-04 1976-10-13 Nittetsu Kinzoku Kogyo Kk Heating type inside lining material of pouring basin
JPS5650172A (en) * 1979-09-28 1981-05-07 Harima Refractories Co Ltd Formless refractories
JPS5678477A (en) * 1980-11-10 1981-06-27 Taiko Refractories Formless refractories

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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
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
JPS6035317B2 (ja) * 1976-11-26 1985-08-14 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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5046525A (ja) * 1972-10-06 1975-04-25
JPS51116119A (en) * 1975-04-04 1976-10-13 Nittetsu Kinzoku Kogyo Kk Heating type inside lining material of pouring basin
JPS5650172A (en) * 1979-09-28 1981-05-07 Harima Refractories Co Ltd Formless refractories
JPS5678477A (en) * 1980-11-10 1981-06-27 Taiko Refractories Formless refractories

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AU560597B2 (en) 1987-04-09
JPH0422865B2 (ja) 1992-04-20
EP0116583A1 (en) 1984-08-29
US4588442A (en) 1986-05-13
WO1984000747A1 (en) 1984-03-01
EP0116583B1 (en) 1986-08-20
AU1882383A (en) 1984-03-07
ZA836126B (en) 1984-04-25
DE3365448D1 (en) 1986-09-25

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