Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
METHOD FOR PRODUCING MAGNESIA CARBON BRICK FOR VACUUM DEGASSING FURNACE
To provide a magnesia carbon brick for use in a vacuum degassing furnace, which contains no or very little graphite, and has improved spalling resistance and corrosion resistance.SOLUTION: A method for producing magnesia carbon bricks for vacuum degassing furnaces includes the steps of adding an organic binder to a refractory raw material mixture, kneading and molding the mixture, and then heat-treating the mixture. The refractory raw material mixture has a magnesia content of 87 mass% or more and 98 mass% or less; contains 75 mass% or more and 95 mass% or less of magnesia having a particle size of 0.075 mm or greater and smaller than 5 mm, 1 mass% or more and 12 mass% or less of magnesia having a particle size of smaller than 0.075 mm, 1 mass% or more and 10 mass% or less of spinel, 0.3 mass% or more and 2 mass% or less of pitch powder having a particle size of smaller than 0.5 mm, and 0.3 mass% or more and 2.5 mass% or less of aluminum and/or aluminum alloy in total; and has a graphite content of 1.5 mass% or less (including 0).SELECTED DRAWING: None
【課題】真空脱ガス炉に使用される黒鉛を含有しないか極めて少ないマグネシアカーボンれんがにおいて、耐スポーリング性及び耐食性を向上する。【解決手段】 耐火原料配合物に有機バインダーを添加して混練し成形後、熱処理する工程を含む、真空脱ガス炉用マグネシアカーボンれんがの製造方法において、耐火原料配合物は、マグネシアの含有率が合計で８７質量％以上９８質量％以下であって、粒径０．０７５ｍｍ以上５ｍｍ未満のマグネシアを７５質量％以上９５質量％以下、粒径０．０７５ｍｍ未満のマグネシアを１質量％以上１２質量％以下、スピネルを１質量％以上１０質量％以下、粒径０．５ｍｍ未満のピッチ粉を０．３質量％以上２質量％以下、アルミニウム及び／又はアルミニウム合金を合計で０．３質量％以上２．５質量％以下含有し、かつ黒鉛の含有率が１．５質量％以下（０を含む）であることを特徴とする。【選択図】なし
METHOD FOR PRODUCING MAGNESIA CARBON BRICK FOR VACUUM DEGASSING FURNACE
To provide a magnesia carbon brick for use in a vacuum degassing furnace, which contains no or very little graphite, and has improved spalling resistance and corrosion resistance.SOLUTION: A method for producing magnesia carbon bricks for vacuum degassing furnaces includes the steps of adding an organic binder to a refractory raw material mixture, kneading and molding the mixture, and then heat-treating the mixture. The refractory raw material mixture has a magnesia content of 87 mass% or more and 98 mass% or less; contains 75 mass% or more and 95 mass% or less of magnesia having a particle size of 0.075 mm or greater and smaller than 5 mm, 1 mass% or more and 12 mass% or less of magnesia having a particle size of smaller than 0.075 mm, 1 mass% or more and 10 mass% or less of spinel, 0.3 mass% or more and 2 mass% or less of pitch powder having a particle size of smaller than 0.5 mm, and 0.3 mass% or more and 2.5 mass% or less of aluminum and/or aluminum alloy in total; and has a graphite content of 1.5 mass% or less (including 0).SELECTED DRAWING: None
【課題】真空脱ガス炉に使用される黒鉛を含有しないか極めて少ないマグネシアカーボンれんがにおいて、耐スポーリング性及び耐食性を向上する。【解決手段】 耐火原料配合物に有機バインダーを添加して混練し成形後、熱処理する工程を含む、真空脱ガス炉用マグネシアカーボンれんがの製造方法において、耐火原料配合物は、マグネシアの含有率が合計で８７質量％以上９８質量％以下であって、粒径０．０７５ｍｍ以上５ｍｍ未満のマグネシアを７５質量％以上９５質量％以下、粒径０．０７５ｍｍ未満のマグネシアを１質量％以上１２質量％以下、スピネルを１質量％以上１０質量％以下、粒径０．５ｍｍ未満のピッチ粉を０．３質量％以上２質量％以下、アルミニウム及び／又はアルミニウム合金を合計で０．３質量％以上２．５質量％以下含有し、かつ黒鉛の含有率が１．５質量％以下（０を含む）であることを特徴とする。【選択図】なし
METHOD FOR PRODUCING MAGNESIA CARBON BRICK FOR VACUUM DEGASSING FURNACE
真空脱ガス炉用マグネシアカーボンれんがの製造方法
OMARU ZENTA (Autor:in) / TOMITA YUYA (Autor:in) / HASHIMOTO KAZUMI (Autor:in) / TSUTSUI YUJI (Autor:in) / MATSUI SHUNSUKE (Autor:in) / HIRATA WAKAKO (Autor:in)
01.05.2024
Patent
Elektronische Ressource
Japanisch
IPC:
C04B
Kalk
,
LIME
/
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
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