JP2022543933A - 耐火物品を製造する方法 - Google Patents
耐火物品を製造する方法 Download PDFInfo
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- JP2022543933A JP2022543933A JP2020566985A JP2020566985A JP2022543933A JP 2022543933 A JP2022543933 A JP 2022543933A JP 2020566985 A JP2020566985 A JP 2020566985A JP 2020566985 A JP2020566985 A JP 2020566985A JP 2022543933 A JP2022543933 A JP 2022543933A
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- 238000010304 firing Methods 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 150000001720 carbohydrates Chemical class 0.000 claims description 77
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- 239000011148 porous material Substances 0.000 claims description 42
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 27
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 23
- 239000000203 mixture Substances 0.000 claims description 21
- 238000009826 distribution Methods 0.000 claims description 20
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 18
- 239000002253 acid Substances 0.000 claims description 16
- 239000008119 colloidal silica Substances 0.000 claims description 16
- 230000002378 acidificating effect Effects 0.000 claims description 13
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- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
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- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 claims description 8
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- GVALZJMUIHGIMD-UHFFFAOYSA-H magnesium phosphate Chemical compound [Mg+2].[Mg+2].[Mg+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O GVALZJMUIHGIMD-UHFFFAOYSA-H 0.000 claims description 3
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Abstract
Description
(実施例)
Claims (22)
- 耐火物品を製造する方法であって、
a)結合剤系と、耐火装入物と、第2のコロイド状結合剤とを混合して水性スラリーを形成し、
b)スラリー成型温度の前記水性スラリーを型に流し込み、
c)前記水性スラリーを含む前記型を、グリーン強度物品を形成するのに十分な時間、前記スラリー成型温度未満の温度に曝し、
d)前記グリーン強度物品を、熱均質性を得るのに十分な時間、少なくとも450℃の温度で焼成し、これにより、耐火物品を形成する
製造方法。 - 請求項1に記載の製造方法であって、さらに、
補強材料を前記型内または前記型上に配置する
製造方法。 - 請求項1または2に記載の製造方法であって、
前記水性スラリーを含む前記型を-195℃から0℃の温度に曝す
製造方法。 - 請求項1または2に記載の製造方法であって、
前記水性スラリーを含む前記型を-100℃から-30℃の温度に曝す
製造方法。 - 請求項1から4のいずれか1項に記載の製造方法であって、さらに、
前記グリーン強度物品を離型する
製造方法。 - 請求項1から5のいずれか1項に記載の製造方法であって、
前記グリーン強度物品を前記焼成工程の前に乾燥する工程を含まない
製造方法。 - 請求項1から6のいずれか一項に記載の製造方法であって、さらに、
前記結合剤系を形成し、
前記結合剤系を形成することは、
水と炭水化物とを含む混合物を調製し、
前記炭水化物をカラメル化してカラメル化炭水化物成分を形成するのに有効な時間、前記混合物をカラメル化温度に加熱し、
前記カラメル化炭水化物成分を第1のコロイド状結合剤およびアジュバントと混合して前記結合剤系を形成する
ことを含む
製造方法。 - 請求項1から6のいずれか一項に記載の製造方法であって、
前記結合剤系は、カラメル化炭水化物成分と、第1のコロイド状結合剤と、アジュバントとを含む
製造方法。 - 請求項7または8に記載の製造方法であって、
前記カラメル化炭水化物成分は、スクロース、グルコース、フルクトース、ガラクトース、マルトース、およびラクトースのうちの少なくとも1つに由来する
製造方法。 - 請求項7から9のいずれか一項に記載の製造方法であって、
前記第1のコロイド状結合剤は、コロイド状シリカ、コロイド状アルミナ、コロイド状ジルコニア、コロイド状イットリア、有機変性コロイド状シリカ、有機変性コロイド状アルミナ、有機変性コロイド状ジルコニア、および有機変性コロイド状イットリアのうちの少なくとも1つを含む
製造方法。 - 請求項7から10のいずれか一項に記載の製造方法であって、
前記アジュバントは、酸、無機湿潤剤、および酸性リン酸接着剤のうちの少なくとも1つを含む
製造方法。 - 請求項11に記載の製造方法であって、
前記アジュバントが酸を含む場合、前記酸は、リン酸、硫酸、クエン酸、酢酸、ホウ酸、およびシュウ酸のうちの少なくとも1つを含み、
前記アジュバントが無機湿潤剤を含む場合、前記無機湿潤剤は、硫酸アンモニウムアルミニウム、硫酸マグネシウム、硫酸アルミニウム、および硫酸カルシウムのうちの少なくとも1つを含み、
前記アジュバントが酸性リン酸接着剤を含む場合、前記酸性リン酸接着剤は、リン酸カルシウム、リン酸マグネシウム、およびリン酸アルミニウムのうちの少なくとも1つを含む
製造方法。 - 請求項7から12のいずれか一項に記載の製造方法であって、
前記カラメル化炭水化物成分は前記結合剤系の5重量%から70重量%を含み、前記アジュバントは前記結合剤系の0.25重量%から10重量%を含み、前記第1のコロイド状結合剤は前記結合剤系の25重量%から90重量%を含む
製造方法。 - 請求項1から13のいずれか1項に記載の製造方法であって、
前記耐火装入物は、ケイ酸塩、金属酸化物、ホウ化物、窒化物、炭化物、硫化物、フッ化物、アルミナイド、合成ガラス、ガラス繊維、耐火セラミック繊維、非耐火セラミック繊維、グラファイト、骨灰、チタン酸アルミニウム、およびアルミン酸カルシウムのうちの少なくとも1つを含む
製造方法。 - 請求項1から14のいずれか一項に記載の製造方法であって、
前記第2のコロイド状結合剤は、コロイド状シリカ、コロイド状アルミナ、コロイド状ジルコニア、コロイド状イットリア、有機変性コロイド状シリカ、有機変性コロイド状アルミナ、有機変性コロイド状ジルコニア、および有機変性コロイド状イットリアのうちの少なくとも1つを含む
製造方法。 - 請求項1から15のいずれか1項に記載の製造方法であって、さらに、
前記焼成工程の後に前記耐火物品を冷却する
製造方法。 - 請求項1から16のいずれか一項に記載の製造方法であって、
前記結合剤系は前記水性スラリーの2重量%から10重量%を含み、前記耐火装入物は前記水性スラリーの40重量%から75重量%を含み、前記第2のコロイド状結合剤は前記水性スラリーの20重量%から50重量%を含む
製造方法。 - 請求項1から17のいずれか1項に記載の製造方法により製造された耐火物品。
- 請求項1から17のいずれか1項に記載の製造方法に従って製造された耐火物品であって、
前記耐火物品は、かさ密度が1g/cm3から2.2g/cm3であり、見かけの気孔率35%から65%であり、かさ密度に対する冷間破砕強度の比率が4MPa/g/cm3から25MPa/g/cm3であること特徴とする
耐火物品。 - 請求項1から17のいずれか1項に記載の製造方法に従って製造された耐火物品であって、
前記耐火物品は、かさ密度が1g/cm3から2.2g/cm3であり、見かけの気孔率が35%から65%であり、かさ密度に対する冷間破壊係数の比率が0.6MPa/g/cm3から2.5MPa/g/cm3であることを特徴とする
耐火物品。 - 請求項1から17のいずれか1項に記載の製造方法に従って製造された耐火物品であって、
前記耐火物品は、かさ密度が1g/cm3から2.2g/cm3であり、見かけの気孔率が35%から65%であり、気孔の等方的な分布を有することを特徴とする
製造方法。 - 請求項1から17のいずれか1項に記載の製造方法に従って製造された耐火物品であって、
前記耐火物品は、耐火繊維材料で強化され、1g/cm3から2.5g/cm3のかさ密度と、6MPa/g/cm3から15MPa/g/cm3のかさ密度に対する冷間破壊係数の比率とを有する
製造方法。
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