How To Select Fused Cast AZS Block For Glass Furnaces

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Fused cast AZS is made of pure alumina powder and zircon sand(65% ZirO2, 34%
SiO2). Its main crystal phase consists of corundum, baddeleyite and glass phase.
The use of fused cast AZS expands the life of glass furnaces.

The life of glass furnaces can be expanded from 11-15 months to 3-4years, even
longer. The melting temperature of the glass can be increased from 1450 ? to
1550 ?, even up to 1600 ?. The glass defects are reduced and the quality of
glass is improved. The production capacity of the glass furnace can be increased
by 20-30%.

The damage of fused cast AZS is mainly caused by chemical attack and thermal
stress. The quality and property of fused cast AZS plays a remarkable influence
on the life of glass furnaces and quality of glass. The use of poor quality
bricks will not only result in frequent shutdown and repair, limiting melting
temperature and reducing the furnace production, but also shorten the life of
furnaces, cause glass defects (stripes, stones, etc.) and reduce the quality of
the glass.

When selecting the size of fused cast AZS, the furnace design principles and the
producing conditions of fused cast AZS must be taken into account. When the
dimension is too big, it tends to crack and will increase the difficulty of
packaging, transport and masonry. For the shaped brick, the feasibility of each
production procedure and the specialty of the casting method should be taken
into account.

The corner brick, dam block, bubble brick and doghouse always employ the fused
cat AZS block 41#. The gaps between bricks should be less than 0.5mm. The bottom
of the brick should not have voids. The brick should not contains too many
impurities. If the color of the brick is blue, there may be too much C in the
brick. The cutting will directly determine the degree of convergence during
masonry. The smaller the gaps are, the longer the life of the glass furnace is.

Sunrise offers different types of fused cast AZS block, including AZS 33#, AZS
36# and AZS 41#. Our fused cast AZS block is made of high quality raw materials
and advanced technology. It has been widely used in the glass furnaces and
improves the life of glass furnaces effectively.


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