Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Converter flue feeding trough castable and preparation method of same
The invention belongs to the field of fireproofing materials for a converter flue feeding trough in iron and steel industry and particularly relates to a converter flue feeding trough castable and a preparation method of the same. The castable containing 10-25% of mid-grade magnesia being 3-5 mm in granularity, 20-40% of mid-grade magnesia being 1-3 mm in granularity, 10-25% of high-aluminum bauxite being 0-3 mm in granularity, 5-20% of magnesium aluminum spinel being 0-1 mm in granularity, 5-15% of industrial aluminum oxide being not more than 50 [mu]m in granularity, 3-8% of SiC being 80-120 meshes in granularity, 2-8% of pure calcium aluminate cement being not more than 0.088 mm in granularity, 2-6% of sodium silicate and 0.5-1.5% of a water reducer. The castable can satisfy the use conditions of two sides of furnace mouth part of a converter flue. The converter flue feeding trough produced with the castable is low in cost, is high in strength, is high-temperature-resistant and friction-resistant, is anti-slag, is strong in high-temperature gas invasion resistance and is low in service life. Meanwhile, the castable allows whole solid casting without water cooling, so that a problem of water leakage in the feeding trough is completely solved and meanwhile large quantity of water resources is saved.
Converter flue feeding trough castable and preparation method of same
The invention belongs to the field of fireproofing materials for a converter flue feeding trough in iron and steel industry and particularly relates to a converter flue feeding trough castable and a preparation method of the same. The castable containing 10-25% of mid-grade magnesia being 3-5 mm in granularity, 20-40% of mid-grade magnesia being 1-3 mm in granularity, 10-25% of high-aluminum bauxite being 0-3 mm in granularity, 5-20% of magnesium aluminum spinel being 0-1 mm in granularity, 5-15% of industrial aluminum oxide being not more than 50 [mu]m in granularity, 3-8% of SiC being 80-120 meshes in granularity, 2-8% of pure calcium aluminate cement being not more than 0.088 mm in granularity, 2-6% of sodium silicate and 0.5-1.5% of a water reducer. The castable can satisfy the use conditions of two sides of furnace mouth part of a converter flue. The converter flue feeding trough produced with the castable is low in cost, is high in strength, is high-temperature-resistant and friction-resistant, is anti-slag, is strong in high-temperature gas invasion resistance and is low in service life. Meanwhile, the castable allows whole solid casting without water cooling, so that a problem of water leakage in the feeding trough is completely solved and meanwhile large quantity of water resources is saved.
Converter flue feeding trough castable and preparation method of same
WANG CHANGBAO (Autor:in)
13.01.2016
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME