AZS-33 Bricks

AZS-33 bricks for glass furnace is a white solid formed by pure alumina powder and zircon sand containing zirconia 65% and about 34% silica in the electric furnace and then injected into the mold to be cooled. The structure azs-33 bricks consists of an eutectoid and a glass phase of corundum and zirconium,AZS blocks are phased as eutectoids of the corundum phase and the zircon oblique phase, and the glass phase is filled between their crystals.
 
AZS-33Bricks Application

Fused cast azs-33 refractory bricks for the glass kiln has excellent corrosion resistance to molten glass,AZS-33 bricks have a very low exudation and blistering rate . AZS-33 bricks used in glass contact (side walls ,paving tiles,etc)and superstructures (breast walls ,ports ,tuck-stones,etc)

AZS-33 Bricks Specification
 

 
AZS-33 Bricks Using Precautions in a Glass Kiln

1.Irregular Changes in Thermal Expansion

The expansion curve of the Al2o3-Zr2o3-Sio2 brick has an anomaly near 1000 °C, the internal ZrO2 crystal undergoes a reversible crystal transformation with a large volume change. Therefore, AZS block product containing ZrO2 should not be used at around 1000 °C, and the ASZ-33 bricks temperature is often A region that fluctuates sharply. When baking the kiln, the temperature change at 900~1150 °C should not be too large, generally can not exceed 15 °C / h, requiring a steady temperature rise. fused cast AZS-33 bricks parts should be protected from blowing cold air and protected by other bricks to prevent cracking.

2.Shrinkage

When casting, there are often shrinkage holes in the casting mouth, and azs-33 refractory brick body has more pores and poor density. Therefore, when the glass wall of the glass melting part is made, the shrinkage holes are directed toward the direction of the kiln. When AZS refractory brick is eroded to a very thin level, azs brick will cause a leakage of glass liquid. When used in the upper flame space of the kiln, the service life is very long, and there is no problem of running glass. Therefore, the casting port is used outwards to extend the service life.

3.Eutectic

The AZS refractory brick and the clay brick are in contact with the clay brick. The eutectic phenomenon occurs at a high temperature of 1300 °C. Therefore, when the refractory material is selected, the two refractory materials with severe eutectic phenomena should be avoided from contact with the masonry, such as silica brick casting. Below AZS fused cast bricks ,AZS brick is most susceptible to erosion by the fused cast AZS brick.

AZS-33 Bricks Packing & Delivery

Consider various and complex transportation conditions, fused cast azs bricks products are packing following the highest standards with foam boards between every two blocks, corners protected with triangular hard card boards and multi-strengthened by steel bands & wrapping in plastic film on the outside.
 
For easy location of different refractory materials,fast cast AZS bricks packing lists are places both inside and outside packages, shipping marks are clearly painted on all cases.


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