Fire Clay and High Alumina Bricks

The oxides of silicon and aluminum form the basis of fire clay and high alumina bricks.
Fireclay Clay Bricks
The composition of fireclay bricks are in the SiO2-Al2O3 system, with 5-80% SiO2 and between 20-45% Al2O3. HöganäsBjuf’s vast experience and own raw material deposits ensures top performance and quality. For areas of application please look into the process.
High Alumina Bricks
According to the description above of fireclay bricks, the High Alumina Bricks belong to the SiO2-Al2O3 system.
The definition of High Alumina is that it has a Al2O3 content above 45%. The higher alumina content normally gives better refractoriness at higher temperatures in comparison with Fireclay Bricks.
Cement and Mortar
Cement or mortar is often used to join bricks. Cements harden at room temperature, while mortars normally require a temperature of at least 300 degrees before they are properly cured
Product Name Type Of Product Al2O3 SiO2 Fe2O3 SiC
FIRE CLAY          
VIKING 330 Alkali resistant brick based on fireclay 35 59 1.7  
VIKING 450 Alkali resistant brick based on fireclay 45 51 1.2  
ALEX Fireclay brick boosted with bauxite 54 40 1.4  
BJUF SX Plastic shaped alkali resistant brick based on fireclay 35 59 1.5  
HIGH ALUMINA          
VICTOR 60 RK Phosphate bonded fired high alumina brick based on bauxite 62 31 1.5  
VICTOR 70 RK Phosphate bonded fired high alumina brick based on bauxite 73 20 1.6  
VICTOR 80 RK Phosphate bonded fired high alumina brick based on bauxite 83 10 1.2  
CERTAIN APPLICATIONS          
VICTOR HWL High Alumina brick based on dense synthetic chamotte 58 38 1.0  
VICTOR HWM High alumina brick based on bauxite 79 17 1.0   
SIC BOOSTED          
ALSIC 500* Alkali resistant fire clay brick boosted with bauxite and silicon carbide 50 37 1.3 9.0
ALSIC 4000* Alkali resistant andalusite brick boosted with silicon carbide 38 34 0.9 26

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