Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention belongs to a refractory material and relates to a novel alumina bubble brick. The novel alumina bubble brick comprises, by weight, 97-98% of Al2O3 with particle size of 1.5-8mm and spontaneous stacking density of 0.7-1.0g/m<3>, 2-1% of SiO2 with particle size of 1.5-8mm and spontaneous stacking density less than 0.6g/m<3>, and 1% of calcium carbonate with spontaneous stacking density less than 0.2g/cm<3> and corresponding density of 1.2-2.0g/cm<3>. The novel alumina bubble brick has high chemical component purity, low impurity content and low Si content. The novel alumina bubble brick is free of the traditional method for preparing a mullite bonding phase by specifically introducing SiO2, effectively reduces SiO2 content, improves a material use temperature, has high strength, can satisfy kiln building and use requirements and can guarantee coal water slurry vapourizing furnace normal operation.
The invention belongs to a refractory material and relates to a novel alumina bubble brick. The novel alumina bubble brick comprises, by weight, 97-98% of Al2O3 with particle size of 1.5-8mm and spontaneous stacking density of 0.7-1.0g/m<3>, 2-1% of SiO2 with particle size of 1.5-8mm and spontaneous stacking density less than 0.6g/m<3>, and 1% of calcium carbonate with spontaneous stacking density less than 0.2g/cm<3> and corresponding density of 1.2-2.0g/cm<3>. The novel alumina bubble brick has high chemical component purity, low impurity content and low Si content. The novel alumina bubble brick is free of the traditional method for preparing a mullite bonding phase by specifically introducing SiO2, effectively reduces SiO2 content, improves a material use temperature, has high strength, can satisfy kiln building and use requirements and can guarantee coal water slurry vapourizing furnace normal operation.
Novel alumina bubble brick
DUAN GENRONG (Autor:in)
03.02.2016
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
| Europäisches Patentamt | 2022