Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Special impregnation of alumina bricks to increase the alkali resistance
Due to a newly developed impregnating treatment of fired alumina and high-alumina bricks, it is possible to significantly increase their resistance to volatile constituents of the kiln atmosphere (alkalis, chlorides, sulphates and their reaction products) without impairing the thermo-mechanical properties of the base material. The open pore space left after brick burning is filled with refractory, oxidic material thus putting a 'reaction stop' to the aggressive media. While the SiO2-rich reaction zone of silicon carbide containing refractories begins to melt down under oxidizing conditions due to the high reactivity at temperatures of more than 1200 deg C, impregnated high-alumina bricks can be used efficiently even in the hot zones of the cement plant (feed end housing, rotary kiln, firing hood and cooler).
Special impregnation of alumina bricks to increase the alkali resistance
Due to a newly developed impregnating treatment of fired alumina and high-alumina bricks, it is possible to significantly increase their resistance to volatile constituents of the kiln atmosphere (alkalis, chlorides, sulphates and their reaction products) without impairing the thermo-mechanical properties of the base material. The open pore space left after brick burning is filled with refractory, oxidic material thus putting a 'reaction stop' to the aggressive media. While the SiO2-rich reaction zone of silicon carbide containing refractories begins to melt down under oxidizing conditions due to the high reactivity at temperatures of more than 1200 deg C, impregnated high-alumina bricks can be used efficiently even in the hot zones of the cement plant (feed end housing, rotary kiln, firing hood and cooler).
Special impregnation of alumina bricks to increase the alkali resistance
Geith, M. (Autor:in) / Majcenovic, C. (Autor:in) / Wiry, A. (Autor:in)
2002
8 Seiten, 10 Bilder, 3 Tabellen, 2 Quellen
Aufsatz (Konferenz)
Englisch
feuerfester Stein , Aluminiumoxid , Imprägnieren , Brennofen , Abbrand , Gasatmosphäre , flüchtiges Produkt , Pore , Korrosionsbeständigkeit , Korrosionsinhibierung , feuerfestes Siliciumcarbiderzeugnis , feuerfestes Tonerdesilicaterzeugnis , Zementbrennen , feuerfestes Bauxiterzeugnis , feuerfeste Auskleidung , Zementdrehrohrofen , Alkalibeständigkeit
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