Fused cast block

Product group
Refractory Bricks & Raw Materials
Origin
China

Zhengzhou Huachen Refractory Co., Ltd.

China
Zhengzhou Huachen Refractory Co., Ltd.

Supplier info

Business type
Manufacturer
Year established
2003
Location
China
Exports to
Worldwide

Fused cast blocks usually named zircon corundum brick also name AZS bricks( alumina zircon silica ),according to the ZrO2 content difference ,can be named AZS 5.5 ,AZS 12 .AZS 36, AZS 33, AZS 41 and so on. Beside because this type bricks are produced by special electric furnace by model, we also called this products Fused cast AZS bricks. Also according to the brick if have shrinkage cavities, we call them PT, QX, ZWS, WS.

These bricks are widely used for iron & steel furnace and glass furnace, also chemical industrial furnace, especial in the glass furnace, you will find it usually.

Ty pe Description Characters  and  Application
PT Normal Cavity It is the accustomed cast method and cavities are located under the mouth of casting. It is used for top of th e glass melter and work pool, also the parts with low temperature connected to glass.
QX Oriented Cavity Using this method, the shrinkage cavities focus on the outside of one end of the brick, and the other end is entirely compacted. W hen being used, the compacted part is upward, while the casting nozzle is outward, they are mainly used in the wall of melting tank and work pool.
ZWS Cavity Free U sing this method, there are a few left shrinkage cavities, and the bottom is completely compacted, it is similar with WS. when being used, the end of shrinkage cavity is downward, the other end is upward, it is well used of melting tank.
WS Reduced Cavity Nonshrinkage cavities cast uses vertical type,Its configuration is special shrink head, The shrinkage cavities are in upper shrink head, which will be cut after anneal, the left is nonshrinkage cavity brick, therefore ,it is compacted very much. when being used, the end of cast is download, the other end is upward. It is mainly used at wall bottom ,dog hole, discharge home, manifold and main parts of melting tank.

Main AZS products characters

Chemical Composition( % ) AZS #33 AZS #36 AZS #41
ZrO 2 ≥ 3 2.5 ≥ 3 6 ≥ 40.5
SiO 2 ≤ 1 5.5 ≤ 14.0 ≤ 1 2.5
Al 2 O 3 Remains Remains Remains
Na 2 O ≤ 1. 4 ≤ 1.6 ≤ 1. 2
Fe 2 O 3 + TiO 2 ≤ 0. 25 ≤ 0. 25 ≤ 0. 25
Physical  characters
Volum e density (hardest part) ≥ 3. 80 ≥ 3. 85 ≥ 4 . 05
Cold crushing strength (M P a) ≥ 3 00 ≥ 3 0 0 ≥ 3 00
Exudation Temp. of glass phase (℃) ≥ 14 00 ≥ 14 1 0 ≥ 14 20
Refractorinessunder load of beginning (0.2MPa) 1700 1700 1700
Corrosion Resistance to glass melt 1300 ℃x10h( mm/24h ) 1. 5 1. 0 0.7
Bulk density (g/cm 3 ) PT 3.42 ≥ 3. 55
Bulk density (g/cm 3 ) QX 3.45 ≥ 3. 55
Bulk density (g/cm 3 ) ZWS 3.65 ≥ 3.65 ≥ 3. 85
Bulk density (g/cm 3 ) WS 3.70 ≥ 3.7 5 ≥ 3. 95
Crystalline phase composition ( % )
Ba d deleyite monocrystal 32 35.5 40
Glass phase 20 19 17
Corundum 47 44 42
Note: Apply to the products of weight more than 50 kg

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