Mullite Bricks Refractory

Following Details of mullite bricks refractory :


Item
Brand/Index

High-purity corundum brick
Corundum mullite brick

KGY-99
KGY-98
KGY-96
KGY-90

Al2O3,% a Y
99
98
96
90
80

Fe2O3,% a
0.15
0.3
0.4
0.5
0.8

Si2O3,% a
0.30





Bulk density,g/cm3 a Y
3.2
3.2
3.1
3.0
3.0

Apparent porosity,% a
18
20
20
20
18

Cold crushing strength MPa a Y
90
90
80
80
120

Refractoriness under load A C(0.2Mpa,0.6%)
1740


1740
1720
1700
1700

Linear change after heating %(1600A CA 2h)
A 0.2


A 0.2
A 0.2

(1550A CA 2h)
A 0.3

(1550A CA 2h)
0~+0.5

(1550A CA 3h)

mullite bricks refractory is widely used in residue gasification, ammonia, Sec conversion furnace, carbon black reactor.