A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
METHOD OF PRODUCING MAGNESIA-CHROME BRICK
To provide a production method of improving hot strength of a direct bonded magnesia-chrome brick or a semi re-bonded magnesia-chrome brick.SOLUTION: The method of producing a magnesia-chrome brick, comprises adding a boron-containing material in an amount of 0.1 to 1 mass% in terms of B2O3 relative to 100 mass% of a mixture of refractory materials including 40 to 78 mass% of magnesia clinker, 22 to 60 mass% of chromium ore, not more than 15 mass% (including 0) of magnesia-chrome clinker, and not more than 8 mass% (including 0) of chromium oxide, with the sum of the magnesia clinker and the chromium ore therein being not less than 77 mass%, blending the mixture, subsequently molding the same, and firing the molding at a temperature of not lower than 1700°C.SELECTED DRAWING: None
【課題】ダイレクトボンド質マグクロれんがあるいはセミリボンド質マグクロれんがの熱間強度を向上するための製造方法を提供する。【解決手段】マグネシアクリンカーを４０～７８質量％、クロム鉱を２２～６０質量％、マグクロクリンカーを１５質量％以下（０を含む）、及び酸化クロムを８質量％以下（０を含む）含有し、かつマグネシアクリンカーとクロム鉱の合量が７７質量％以上である耐火原料配合物１００質量％に対して、ホウ素含有物をＢ２Ｏ３換算値として０．１～１質量％添加し、混練後、成形し、１７００℃以上で焼成する。【選択図】なし
METHOD OF PRODUCING MAGNESIA-CHROME BRICK
To provide a production method of improving hot strength of a direct bonded magnesia-chrome brick or a semi re-bonded magnesia-chrome brick.SOLUTION: The method of producing a magnesia-chrome brick, comprises adding a boron-containing material in an amount of 0.1 to 1 mass% in terms of B2O3 relative to 100 mass% of a mixture of refractory materials including 40 to 78 mass% of magnesia clinker, 22 to 60 mass% of chromium ore, not more than 15 mass% (including 0) of magnesia-chrome clinker, and not more than 8 mass% (including 0) of chromium oxide, with the sum of the magnesia clinker and the chromium ore therein being not less than 77 mass%, blending the mixture, subsequently molding the same, and firing the molding at a temperature of not lower than 1700°C.SELECTED DRAWING: None
【課題】ダイレクトボンド質マグクロれんがあるいはセミリボンド質マグクロれんがの熱間強度を向上するための製造方法を提供する。【解決手段】マグネシアクリンカーを４０～７８質量％、クロム鉱を２２～６０質量％、マグクロクリンカーを１５質量％以下（０を含む）、及び酸化クロムを８質量％以下（０を含む）含有し、かつマグネシアクリンカーとクロム鉱の合量が７７質量％以上である耐火原料配合物１００質量％に対して、ホウ素含有物をＢ２Ｏ３換算値として０．１～１質量％添加し、混練後、成形し、１７００℃以上で焼成する。【選択図】なし
METHOD OF PRODUCING MAGNESIA-CHROME BRICK
マグクロれんがの製造方法
SHIMIZU KOICHI (author)
2023-08-08
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
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