Index

Item

Silica Brick for Coke oven

JG-94

LJG-95

LJG-93A

LJG-93B

SiO2 % ≥

94

95

93

93

Al2O3 % ≥

 1.5

 1.4

1.5

1.5

Fe2O3 % ≤

 2.0

 2.0

2.0

2.0

Refractoriness under load °C≥

1650

1660

1650

1650

A.P. %  ≤

22

22

22(23)

24(25)

C.C.S (Mpa) ≤

29.4

35

35(30)

30(25)

True density
(g/cm3) ≤

2.35

2.34

2.34

2.35

Thermal
expansion <

1.25

1.25

1.25

Linear change
after reheating %≤

0.2

+0.2

Bulk density
(g/cm3) ≥