refractory silica brick for coke oven

Useful Silica Bricks for Coke Oven
Mark JG-94
Item Silica Bricks for Coke Oven Others Actual Value
Chemical Composition W(SiO2)/ % = 94.5 95
W(Al2O3)/ % = 1.5 1.2
W(Fe2O3)/ % = 1.5 1.2
W(CaO)/ % = 2.5 2.5
W(K2O+Na2O)/ % = —
PhysicalIndex apprent porosity % = 22 22
density of dust particle g/cm³ = 2.33 2.32
compression strengthMpa = 40 45
linear changes on reheating(1450? *2h) % 0~0.2 0~0.2
softening temperature (point) under load 0.2Mpa? = 1650 1650
Thermal Expansivity(at 1000)? % = 1.28 1.30 1.28
creep rate(1450? *25h) % = —
residual quartz % = 1.0 1.0

refractory silica brick for coke oven