With the improvement of the quality of the fused cast AZS, the traditional masonry method of the sidewall brick in the float glass furnace is replaced by the large sidewall block made of fused cast AZS 33# QX.

The use of large sidewall block of fused cast AZS 33# QX eliminates the horizontal mortar joints, expands the service life of the sidewall blocks, reduces the pollution to glass liquid and improves the quality of glass. When installing the large sidewall block, the following guideline should be followed.

Since the large sidewall block is very heavy, it is better to increase the times of loading and unloading. When transporting, be gentle to avoid damages.

When installing the sidewall block, the bottom block should be even. The nozzle of the large sidewall block of fused cast AZS 33# QX should be placed towards the outside of the bottom of the sidewall.

When preheating the furnace, follow the temperature curve strictly and avoid big temperature fluctuation. Especially at 800-1200℃, the fused cast AZS block expands rapidly. Big temperature fluctuation will cause stress inside the block and may cause cracks.

During the operation, reduce the fluctuation of the level of the glass liquid since it is one of the main reason for the corrosion and erosion of the sidewall block, especially the part around the liquid level where is the junction of the solid, liquid and gas.

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