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FIBER DISPERSION REINFORCED-REFRACTORY MOLDED ARTICLE
PROBLEM TO BE SOLVED: To provide a fiber dispersion reinforced-refractory molded article which is reinforced by fiber and has extremely improved elastoplastic fracture toughness when molded and dried, and which is excellent in thermal shock resistance.SOLUTION: The fiber dispersion reinforced-refractory molded article is provided which is obtained by: mixing a monolithic refractory formulation containing AlOor SiC as components with an alumina-based inorganic fiber; adding water to the monolithic refractory formulation and kneading it; then pouring the kneaded monolithic refractory formulation into a mold; and drying and solidifying the poured monolithic refractory formulation, and which is composed of an aggregate part and a binding part, and in which the aggregate part includes at least AlOand SiC, the binding part is constituted by a hydration reaction and a monofilament of the alumina-based inorganic fiber is dispersed in the binding part. The alumina-based inorganic fiber is composed of a mineral component of one of mullite, δ alumina, α alumina or a combination of several kinds of them, contains AlOof 60 wt.% to 80 wt.% and SiOof 20b wt.% to 40 wt.%, has a fiber diameter of 3 to 7 μm, a fiber length of 20 to 600 μm and an average fiber length of 50 to 200 μm and the alumina-based inorganic fiber is mixed with the monolithic refractory formulation at a ratio of 0.5 to 5 wt.%.
【課題】繊維で強化されており、成形、乾燥された際に、弾塑性破壊靱性が大幅に改良され、耐熱衝撃性に優れた繊維分散強化耐火物成形体。【解決手段】Ａｌ２Ｏ３あるいはＳｉＣを成分に含む不定形耐火調合物に、アルミナ系無機繊維を混合し、水を加えて混練した後、成形型に流し込み、乾燥、固化させて得た、骨材部と結合部からなり、骨材部は少なくともＡｌ２Ｏ３あるいはＳｉＣを含み、結合部が水和反応によって構成され、前記アルミナ系無機繊維のモノフィラメントが前記結合部に分散している繊維分散強化耐火物成形体。前記アルミナ系無機繊維は、ムライト、δアルミナ、αアルミナのいずれか、あるいはこれらの中の複数種を組み合わせた鉱物成分で構成され、Ａｌ２Ｏ３を６０重量％〜８０重量％、ＳｉＯ２を２０重量％〜４０重量％含み、繊維直径３〜７μmで、繊維長さ２０〜６００μm、平均繊維長５０〜２００μmであり、前記アルミナ系無機繊維が前記不定形耐火調合物に０．５乃至５重量％の割合で混合されている。【選択図】なし
FIBER DISPERSION REINFORCED-REFRACTORY MOLDED ARTICLE
PROBLEM TO BE SOLVED: To provide a fiber dispersion reinforced-refractory molded article which is reinforced by fiber and has extremely improved elastoplastic fracture toughness when molded and dried, and which is excellent in thermal shock resistance.SOLUTION: The fiber dispersion reinforced-refractory molded article is provided which is obtained by: mixing a monolithic refractory formulation containing AlOor SiC as components with an alumina-based inorganic fiber; adding water to the monolithic refractory formulation and kneading it; then pouring the kneaded monolithic refractory formulation into a mold; and drying and solidifying the poured monolithic refractory formulation, and which is composed of an aggregate part and a binding part, and in which the aggregate part includes at least AlOand SiC, the binding part is constituted by a hydration reaction and a monofilament of the alumina-based inorganic fiber is dispersed in the binding part. The alumina-based inorganic fiber is composed of a mineral component of one of mullite, δ alumina, α alumina or a combination of several kinds of them, contains AlOof 60 wt.% to 80 wt.% and SiOof 20b wt.% to 40 wt.%, has a fiber diameter of 3 to 7 μm, a fiber length of 20 to 600 μm and an average fiber length of 50 to 200 μm and the alumina-based inorganic fiber is mixed with the monolithic refractory formulation at a ratio of 0.5 to 5 wt.%.
【課題】繊維で強化されており、成形、乾燥された際に、弾塑性破壊靱性が大幅に改良され、耐熱衝撃性に優れた繊維分散強化耐火物成形体。【解決手段】Ａｌ２Ｏ３あるいはＳｉＣを成分に含む不定形耐火調合物に、アルミナ系無機繊維を混合し、水を加えて混練した後、成形型に流し込み、乾燥、固化させて得た、骨材部と結合部からなり、骨材部は少なくともＡｌ２Ｏ３あるいはＳｉＣを含み、結合部が水和反応によって構成され、前記アルミナ系無機繊維のモノフィラメントが前記結合部に分散している繊維分散強化耐火物成形体。前記アルミナ系無機繊維は、ムライト、δアルミナ、αアルミナのいずれか、あるいはこれらの中の複数種を組み合わせた鉱物成分で構成され、Ａｌ２Ｏ３を６０重量％〜８０重量％、ＳｉＯ２を２０重量％〜４０重量％含み、繊維直径３〜７μmで、繊維長さ２０〜６００μm、平均繊維長５０〜２００μmであり、前記アルミナ系無機繊維が前記不定形耐火調合物に０．５乃至５重量％の割合で混合されている。【選択図】なし
FIBER DISPERSION REINFORCED-REFRACTORY MOLDED ARTICLE
繊維分散強化耐火物成形体
FUKUMARU SHIGERU (author) / ICHIKAWA HIROSHI (author)
2015-09-03
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
/
F27D
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