Delivery Time:3-5 days
Certification:CE,FCC,MSDS

Special Shaped Corundum Mullite Insulating Refractory Bricks With Acid Resistant

Quick Detail:

♦ Compact microstructure
♦ Good erosion resistibility to molten glass
♦ Good thermal shock resistibility
♦ Barely rendering blister

Applications:

mainly used for side walls of flame furnaces with embedded melter bottoms, for total security with average pulls and campaign lengths, and superstructures, front wall, back wall, top crown in glass melting furnace.

Specifications:

chemical composition	AZS-33	AZS-36	AZS-41
ZrO2	≥33	≥35	≥40
SiO2	≤16.0	≤14	≤13.0
Al2O3	a little	a little	a little
Na2O	≤1.5	≤1.6	≤1.3
Fe2O3+TiO2	≤0.3	≤0.3	≤0.3

Physical Properties

bulk density(g/cm3):	3.5-3.6	3.75	3.90
cold crushing Mpa	350	350	350
thermal expansion coefficient (1000°C)	0.80	0.80	0.80
exudation temp. of glass phase	1400	1400	1400
corrocion resistance  of glass melt(mm/24h)	1.6	1.5	1.3
Density	PT   QX	3.40	3.45	3.55
WS    ZWS	3.60	3.70	3.8

phase composition(%)

baddeleyite	32	35	40
glass phase	21	18	17
α- corundum	47	47	43