Guarantee value

Typical value

Chemical Composition (%)

70-77

75.30

SiO₂

22-29

24.08

Fe₂O₃

≤0.1

0.05

R₂O₃

≤0.5

0.18

RO

≤0.3

0.28

Mullite phase 3Al₂O₃ 2SiO₂(%)

≥95

Glass phase (%)

≤5

Linear expansion coefficient (1/°C)

-6.0×10^-6

Density of volume (g/cm³⁾

≥3.0

Refractoriness( °C )

≥1840

Grain size (mm)

5-3 3-1 1-0

Color

White or Grey

Test standard

KTB01006-2003

Packing

25kg/plastic bag 1000kg/plastic bag At buyer's option