Fused cast AZS block produced by Zhengzhou Sunrise Refractory Co., Ltd are mostly applied to glass contact and superstructure of glass melting furnaces, which have Strong glass corrosion resistance and high thermal shock stability. Importantly, the fused cast technology can avoid electrode pollution.

1. Specific Meaning Of Property Index For Fused Cast AZS Block
As far as we known, fused cast AZS block is widely used in glass furnace, and it has excellent
performance with proper property, such as high bulk density, low porosity, high refractoriness
under load, high refractoriness, good cold crushing strength, etc. Below is the specific
meaning of the property for your reference.
Bulk density: Bulk density is an indicator of weight for unit volume brick which means the
weight is divided by the total volume. The weight can be weighed in the air directly, volume is
a measure of the amount of space that an object takes up. Bulk density is a useful property of
fused cast AZS block which defines the material present in a given volume. An increase in
bulk density of fused cast AZS block will increase its volume stability, heat capacity, as well as
resistance to slag penetration.
Porosity: Porosity is a measure of the amount of void space inside a brick. This void space
can be between grains or within cracks or cavities of the brick. Apparent porosity is an
important index to evaluate the quality of refractory bricks, as it does not only reflect the
density of refractory, but also reflect whether the manufacturing process is reasonable or not.
Refractoriness under load: Refractoriness under load is also called load deformation
temperature, which means the resistance ability to high temperature and load at the same
time when refractory is under certain load, and also means the softening temperature range
while refractory bricks show obvious plastic deformation. Refractoriness under load is an
important mechanical property index.
Refractoriness: Refractoriness means the temperature that multiphase of refractory reaches
to a specific degree of softening when at high temperature, which shows the ability of
resistance to high temperature. However, it is different from melting point, melting point is the
balance temperature between solid and liquid crystal.
Cold Crushing Strength: Cold crushing strength represents the ultimate load that unit area
can bear while at a certain temperature. It is an important index of refractory which can
reflects the structure of brick. Generally, the higher the cold crushing strength of a refractory
is, the greater should be the resistance to abrasion and slag attack.
Thermal conductivity: Thermal conductivity means that under a stable heat transfer condition,
the heat transmits through 1 square meters area when keeping the temperature difference
between two sides of the surface is 1 degree in1m thick material. Low thermal conductivity
refractory is called as insulation refractory, high thermal conductivity refractory has excellent
thermal ability.
Zhengzhou Sunrise Refractory Co., Ltd. is mainly engaged in the research and development
of refractory products. Sunrise can provide excellent fused cast AZS block which has passed

2. the ISO international certified. Over 30 years producing and marketing experience, with
reliable quality, competitive price and prompt delivery, Sunrise has established long-term
business and cooperation relationship with many customers in different countries and regions.
For any further information, Contact us, we will do our best to help you.
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