Schamotte NP 25 Li [en]

Garanteed values

Chemical composition, Psychical properties Al2O3(min%) 25,0
Fe2O3(max%) 1,5
Refractoriness (CS/DIN) min. 22,0
Water absorption (%) max. 8,0
Bulk density (g/cm3) min. 2,17

Non attested values

Chemical composition: Typical analysis (%) Range (%)
Al2O3 26,55 25,0-29,0
Fe2O3 1,27 1,00-1,50
TiO2 1,77 1,50-2,00
K2O 1,52 1,40-1,70
Na2O 0,10 0,05-0,20
CaO 0,30 0,2-0,4
MgO 0,30 0,2-0,4
SiO2 68,50 70,00-65,00
Loss on ignition 0,10 0,02-0,20
Physical properties    
Refractoriness (CS/DIN) 23 22-25
Water absorption (%) 5,9 5,0-8,0
Bulk density (g/cm3) 2,22 2,17-2,28
Temperature of calcination (°C) 1,250
Calcined at Rotary kiln
WAK 50-200°C (10-6K-1) 6,42 5,81-7,02
WAK 50-600°C (10-6K-1) 6,98 6,77-7,31
Mineralogical properties    
Mullit 30 -
Cristobalit 0,6 -
Quartz 26 -
Korund 0,0 -