Fused Cast Alpha-Beta Al2O3 Refractory Brick

Model NO.
AZS-33
Color
Pure White
Grade
Azs 33, Azs 36, Azs41
Transport Package
Wood Cartons and Pallet
Specification
GB
Trademark
NR
Origin
China
HS Code
69022000
Production Capacity
20000 Ton/Year
Reference Price
$ 8.10 - 9.00
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Product Description

Alpha-Beta Al2O3 Refractory Blocks and Bricks

Fused Cast AZS BRICKS  are the most widely used materials both in glass contact and superstructure of glass melting furnaces. They can be classified by their zirconia content, which basically defines their corrosion resistance.

Fused Cast Alpha-Beta Al2O3 Refractory Brick
 

  • NR-33       32% - 34% ZrO 2 : The reference category of fused-cast industry. Main applications include glass contact (paving tiles, working-end walls) and superstructures.
 
  • NR36        36% ZrO 2 : With its improved corrosion resistance and combined with the "reinforced filling" process, the optimum choice for melter sidewalls application.
     
  • NR41       41% ZrO 2 : with the highest corrosion resistance within the AZS family, this type of material is used for all demanding glass contact applications in the void free configuration : electrode blocks, submerged walls, throats, and in some cases melter sidewalls. Available as well, for sidewall application, in the specific "reinforced filling" version.
Fused Cast Alpha-Beta Al2O3 Refractory Brick

Besides, the fused cast AZS bricks can be devied into different types according its casting techniques,  PT [normal casting], QX [tilt casting ] , ZWS [reinforced casting ]  and WS [void-free casting]. 

 
WS while casting, the casting size is bigger than that is required. Most of the voids concentrate in the header which is subsequently cut off with a diamond saw, and then the block in required size is left, most used in side wall and flow.
 
PT The brick made by normal casting has normal shrinkage void; it is often used in the upper structure of furnace and the interface parts which touch molten glass.
 
ZWS while casting, the casting size is bigger than it is required. Most of the voids concentrate in the header which is subsequently cut off with a diamond saw, and then the block in required size is left, most used in side wall.
 
QX by tilt casting, shrinkage voids focus on one side, while the other side is dense. This kind of bricks are usual sabity is located towards the bottom, and of the block that used for sidewalls.

Please contact us for more details.

 
 
 ITEMS NR-AZS-41 NR-AZS-36 NR-AZS-33
ZrO 2  (%) ≥ 40.0-42.0 36.0-37.0 32.0-34
SiO 2  (%) ≤ 13 14 15.5
Al 2 O 3 ---- ---- -----
Na 2 O≤ 1.3 1.4 1.5
Fe 2 O 3 ≤ 0.1 0.1 0.1
TiO 2 ≤ 0.05 0.05 0.05
B.D. (g/cm 3 ) ≥ 4.12 3.89 3.8
C.C.S (Mpa) ≥ 350 350 350
Bulk density(g/cm 3 ) PT/QX 3.55 3.45 3.4
ZWS 3.9 3.65 3.6
WS 3.92 3.78 3.7
Apparent Porosity (%) 1.3 1.5 2
Refractoriness ( C) 1730 1710 1710
0.2Mpa Softening temp. under load( C) >1700 >1700 >1700
Exudation temp. of Glass Phase( C) >1430 >1420 >1400
Corrosion Resistance of Glass Melt(mm/24h) 1.1 1.2 1.3
Thermal Expansion(%), 100C 0.8 0.8 0.8
Glass Phase (%) 18 19 20

Saint-Gobain Fused Cast Equivalent Products Comparasion : 



 

 

Refractory

LEGALIS.IT, 2023