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LIGHT WEIGHT ALKALI RESISTANT FIRE RESISTANT THERMAL INSULATING BRICK AND MANUFACTURING METHOD THEREFOR
PROBLEM TO BE SOLVED: To provide an alkali resistant fire resistant thermal insulating brick conducted reducing weight by enhancing porosity and having low thermal conductivity and excellent strength and a manufacturing method therefor.SOLUTION: There is provided a light weight alkali resistant fire resistant thermal insulating brick obtained by mixing an alumina powder and a powder of a hydraulic material containing calcia so that alumina is 91 to 99.9 mass% and calcia is 0.1 to 9 mass% and further mixing a pore adding material and water to have a slurry and then burning the molded body in an ambient air atmosphere, constituted by a skeleton part of the alumina particle connected by composite oxide of alumina and calcia and a cavity part existing between skeleton parts and having porosity of 70% or more and thermal conductivity (350°C) of 0.4 to 1.0 W/(m K).
【課題】 気孔率を高めることによって軽量化を図ると同時に、低い熱伝導率と優れた強度を有する耐アルカリ耐火断熱れんが、及びその製造方法を提供する。【解決手段】 アルミナ粉末とカルシアを含む水硬性材料の粉末とを、アルミナが９１〜９９.９質量％及びカルシアが０.１〜９質量％となるように混合し、更に気孔付与材と水を混合してスラリーとした後、その成形体を大気雰囲気中で焼成して得られる軽量耐アルカリ耐火断熱れんがであって、アルミナとカルシアの複合酸化物で連結されたアルミナ粒子の骨格部分と、骨格部分の間に存在する空隙部分とで構成され、気孔率が７０％以上で且つ熱伝導率（３５０℃）が０.４〜１.０Ｗ／（ｍ・Ｋ）である。【選択図】 なし
LIGHT WEIGHT ALKALI RESISTANT FIRE RESISTANT THERMAL INSULATING BRICK AND MANUFACTURING METHOD THEREFOR
PROBLEM TO BE SOLVED: To provide an alkali resistant fire resistant thermal insulating brick conducted reducing weight by enhancing porosity and having low thermal conductivity and excellent strength and a manufacturing method therefor.SOLUTION: There is provided a light weight alkali resistant fire resistant thermal insulating brick obtained by mixing an alumina powder and a powder of a hydraulic material containing calcia so that alumina is 91 to 99.9 mass% and calcia is 0.1 to 9 mass% and further mixing a pore adding material and water to have a slurry and then burning the molded body in an ambient air atmosphere, constituted by a skeleton part of the alumina particle connected by composite oxide of alumina and calcia and a cavity part existing between skeleton parts and having porosity of 70% or more and thermal conductivity (350°C) of 0.4 to 1.0 W/(m K).
【課題】 気孔率を高めることによって軽量化を図ると同時に、低い熱伝導率と優れた強度を有する耐アルカリ耐火断熱れんが、及びその製造方法を提供する。【解決手段】 アルミナ粉末とカルシアを含む水硬性材料の粉末とを、アルミナが９１〜９９.９質量％及びカルシアが０.１〜９質量％となるように混合し、更に気孔付与材と水を混合してスラリーとした後、その成形体を大気雰囲気中で焼成して得られる軽量耐アルカリ耐火断熱れんがであって、アルミナとカルシアの複合酸化物で連結されたアルミナ粒子の骨格部分と、骨格部分の間に存在する空隙部分とで構成され、気孔率が７０％以上で且つ熱伝導率（３５０℃）が０.４〜１.０Ｗ／（ｍ・Ｋ）である。【選択図】 なし
LIGHT WEIGHT ALKALI RESISTANT FIRE RESISTANT THERMAL INSULATING BRICK AND MANUFACTURING METHOD THEREFOR
軽量耐アルカリ耐火断熱れんが及びその製造方法
TSUNOMURA HISANORI (author) / SUZUKI TAKAMICHI (author)
2015-09-03
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
/
F27D
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