Chamotte NP Extra Mix

Garanteed values

      ČSN 721300
Chemical composition, Psychical properties Al2O3(min%) 39,0 B
Refractoriness (CS/DIN) 173,0 2
Fe2O3(max%) 2,2 4
Water absorption (%) 5-9 2

Non attested values

Chemical composition: Typical analysis (%) Range (%)
Al2O3 40,20 39,00 - 41,00
Fe2O3 2,15 1,70 - 2,20
TiO2 1,32 1,20 - 1,50
K2O 0,72 0,50 - 0,80
Na2O 0,06 0,05 - 0,10
CaO 0,35 0,30 - 0,70
MgO 0,24 0,10 - 0,40
SiO2 54,68 57,10 - 53,30
Loss on ignition 0,15 0,05 - 0,20
Physical properties    
Refractoriness (CS/DIN) 173 173,00 - 174,00
3,20 1,80 - 3,90
Bulk density (g/cm3) 2,48 2,45 - 2,55
Temperature of calcination (°C) 1 300
Calcined at Rotary kiln
Mineralogical properties    
Mullit 37 -
Cristobalit 6 -
Quartz 7 -