Pálený kaolín PKLa I [en]

Garanteed values

     
Chemical composition, Psychical properties Al2O3 40,0
Refractoriness (CS/DIN) min. 32,0
Fe2O3 (max. %) 1,0
Water absorption (%) max. 18,0

Non attested values

Chemical composition: Typical analysis (%) Range (%)
Al2O3 40,70 40,00-41,50
Fe2O3 0,80 0,70-1,00
TiO2 0,85 0,70-0,95
K2O 2,30 2,00-2,50
Na2O 0,10 0,05-0,15
CaO 0,10 0,05-0,15
MgO 0,35 0,25-0,45
SiO2 54,90 52,00-56,00
Loss on ignition 0,10 0,01-0,20
Physical properties    
Refractoriness (CS/DIN) 32,5 32-33
14,0 10,00-18,00
Bulk density (g/cm3) 1,85 1,70-1,95
Temperature of calcination (°C) 1230  
Calcined at Rotary kiln  
Whiteness (%) 86,0 84,00-88,00
Dilatation: 50-200 °C 10-6K-1 3,8 3,60-4,10
Dilatation: 50-600 °C 10-6K-1 4,6 4,50-4,70
Mineralogical properties    
Mullit 35,0 30,00-38,00
Cristobalit 0,0 0,00-1,00
Quartz 2,0 0,00-3,00