AZS-33 Bricks Introduction
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
| Al203 |
49.80% |
| ZrO2 |
33% |
| SiO2 |
15.50% |
| Na20 |
1.40% |
| Corundum |
47% |
| Baddeleyite |
32% |
| Vitreous Phase |
21% |
| Bulk Density |
3.7g/cm3 |
| Apparent Porosity |
≤1.50% |
| Cold Crushing Strength |
350Mpa |
| Linear Change Under load |
0 |
| RefractorinessUnderLoadof0.2Mpa |
1700℃ |
| Exudation Temp |
1400℃ |
| Static corrosion of molent glass |
1.45mm/24h |
| Blsliter rate |
1.40% |
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.
Refractory Material Manufacturer - RongSheng Refractory
Zhengzhou Rongsheng kiln Refractory Company is located in ZhengZhou Henan province,which is one of the main refractory manufacturing bases in china.There is big exporter of refractory material in Henan province .Specializing in the production of refractory bricks for nearly 20 years, now has formed a comprehensive enterprise for the production of refractory materials for the metallurgy, building materials, power, and chemical industries.
RS Refractory factory main products
Various industrial furnace series refractories
High-alumina brick, anchor brick, clay brick, lightweight insulation brick, high-strength diatomaceous earth brick, low-iron mullite brick, silica brick.
Heat storage balls for various industrial furnace regenerators
Special corundum heat storage balls, honeycomb, regenerator block, tapping chute brick,Anti-stripping high-alumina bricks for cement industry, alkali-resistant bricks, phosphate bricks, etc.
Industrial furnace and power generation boiler industry with various brands of wear-resistant bricks, corundum brick, mullite bricks and other stereotypes.
Wear-resistant castables, corundum castables, low-cement high-strength castables, impervious materials, self-flowing materials, plastics, and other unshaped refractories.
Rongsheng Refractory Company products exported to the United States, India, Japan. South Korea, Pakistan and other countries.
