Precautions for the use of fused zircon corundum bricks

 
1. Irregular changes in thermal expansion
Fused zirconia corundum bricks are characterized by stable and dense collection, and strong resistance to liquid glass erosion. There is an abnormal expansion between 900 and 1200 ° C, which is caused by the transformation of the monoclinic form of ZrO2 into the cubic form of ZrO2, which can be used as a reference for the glass pool kiln and the kiln.
 
2. Electrical insulation
When using all-electric melting and electric fluxing methods, electrode bricks are required to have good electrical insulation at high temperatures. Zirconium corundum bricks have better electrical insulation properties and decrease with increasing temperature. It can be seen that zirconium corundum bricks can be used as electrode bricks in the production of soda-lime glass pool furnaces. However, AHS-41 or zircon bricks are used in the production of high borosilicate glass. Otherwise, not only the power consumption cannot be controlled, but also the bricks will be melted, the electrodes will be damaged, and the glass liquid will be polluted.
 
3. Thermal conductivity
The thermal conductivity of zirconium alumina bricks is twice that of clay bricks. Therefore, when this kind of pool wall brick is used, the amount of cooling air required near the liquid level should be-twice as large as that of clay bricks. In order to achieve a sufficient cooling effect, the advantages of zircon corundum bricks are brought into full play.