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Application Of Fused Cast Alumina Block In Ceramic Frit Kilns

Frit is a ceramic composition formed by fusing inorganic materials into a glass by heating them in ceramic frit kilns and quenching them in water. It is one of the components to produce glaze. 
Application Of Fused Cat Alumina Block In Ceramic Frit Kilns
Glaze is a vitreous coating adhered to the surface of a ceramic material. When producing glazed tiles, the glaze is usually made from frit glaze, which is produced by melting part of the raw materials in the ceramic frit kiln. 
 
The firing temperature of ceramic frit kilns is around 1150-1300℃. The temperature varies with the type of glaze. In the bottom, walls and roof arch, high alumina bricks (AL2O3≥65%) are used as lining materials. The second layer is fire clay insulation brick and the third layer is light weight insulation bricks. Ceramic fiber blanket is applied on the outer wall for insulation. 
 
The most important and demanding part of the ceramic frit kiln is the drip spout through which the frit is poured into the water quenching pool. Its requirement for refractory materials is extremely strict. The improper selection of refractory materials will influence the service life of kilns and the capacity and quality of frit. 
 
When high alumina brick is used in the drip spout, its service life is only 15-25 days and must be replaced. It is a big waste of refractory materials and will increase the cost. It will also cause nodules and affect the quality of frit. 
 
In ceramic frit kilns, the chemical corrosion at high temperature is the main reason to damage the refractory materials in the drip spout. In order to expand the service life of drip spout, fused cast alumina block is used. It can expand the service life to 3 months. 
 
Fused cast alumina block has great corrosion resistance to acid, alkali and molten glass. It can be used in different atmospheres. It has low pollution potential. It can greatly improve the quality of frit and expand the service life of kilns. 

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