Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
MAGNESIA CARBON BRICK AND PRODUCTION METHOD THEREFOR
Provided are a magnesia carbon brick which does not include graphite yet has excellent spalling and corrosion resistances, and a method for producing thereof. The brick is obtained by adding an organic binder to a refractory raw material mixture followed by kneading, molding, and heat-treating, wherein the mixture includes total 0.1 to 2.0 mass% of pitch and/or carbon black, total 0.1 to 1.0 mass% of aluminum and/or aluminum alloy, 3.0 to 10.0 mass% of magnesia having particle diameter of less than 0.075 mm, and 87.0 to 96.0 mass% of magnesia having particle diameter of 0.075 to 5 mm; and a mass ratio of magnesia having particle diameter of 1 to 5 mm to that of 0.075 to 1 mm is 1.66 to 2.34; graphite is not included therein; and an apparent porosity thereof after heat-treatment under reductive atmosphere at 1400°C for 3 hours is 8.0% or less.
MAGNESIA CARBON BRICK AND PRODUCTION METHOD THEREFOR
Provided are a magnesia carbon brick which does not include graphite yet has excellent spalling and corrosion resistances, and a method for producing thereof. The brick is obtained by adding an organic binder to a refractory raw material mixture followed by kneading, molding, and heat-treating, wherein the mixture includes total 0.1 to 2.0 mass% of pitch and/or carbon black, total 0.1 to 1.0 mass% of aluminum and/or aluminum alloy, 3.0 to 10.0 mass% of magnesia having particle diameter of less than 0.075 mm, and 87.0 to 96.0 mass% of magnesia having particle diameter of 0.075 to 5 mm; and a mass ratio of magnesia having particle diameter of 1 to 5 mm to that of 0.075 to 1 mm is 1.66 to 2.34; graphite is not included therein; and an apparent porosity thereof after heat-treatment under reductive atmosphere at 1400°C for 3 hours is 8.0% or less.
MAGNESIA CARBON BRICK AND PRODUCTION METHOD THEREFOR
MAGNESIUMOXID-KOHLENSTOFF-STEIN UND HERSTELLUNGSVERFAHREN DAFÜR
BRIQUE MAGNÉSIE-CARBONE ET SON PROCÉDÉ DE PRODUCTION
TOMITA YUYA (Autor:in) / TANAKA MASATO (Autor:in) / SAWAI SHIGETO (Autor:in)
22.09.2021
Patent
Elektronische Ressource
Englisch
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