CHAMOTTE NP IIa

Garanteed values

Chemical composition, Psychical properties Al2O3(min%) 37,0
Fe2O3(max%) 2,80
Refractoriness (CS/DIN) min. 32/33
Water absorption (%) max. 4,0
Bulk density (g/cm3) min. 2,40

Non attested values

Chemical composition: Typical analysis (%) Range (%)
Al2O3 37,88 37,0-39,0
Fe2O3 2,45 2,0-2,8
TiO2 1,30 1,1-1,5
K2O 0,8 0,5-0,9
Na2O 0,15 0,05-0,2
CaO 0,34 0,3-0,7
MgO 0,25 0,2-0,5
SiO2 56,83 58,8-54,4
Loss on ignition 0,18 0,1-0,3
Physical properties    
Refractoriness (CS/DIN) 32/33 32/33-33
Water absorption (%) 2,8 2,0-4,0
Bulk density (g/cm3) 2,43 2,40-2,55
Temperature of calcination (°C) 1,250
Calcined at Rotary kiln
Mineralogical properties    
Mullit 35 -
Cristobalit 4 -
Quartz 8 -