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Sunrise refractory high quality fused zirconium corundum brick

2019-08-01

 The fused zirconia corundum brick is made of industrial zirconia and alumina. After superfine pulverization, the powder particle size is strictly controlled. High-strength, high-resistance zirconia-alumina composite ceramics can be obtained by conventional techniques. Corundum brick is a high-grade refractory material.

 
The fused zirconia corundum brick, also known as AZS fused zirconium corundum brick, is abbreviated as AZS. It is based on the three chemical compositions of the Al2O3-Zr02-Sio2 ternary phase diagram. It is arranged according to its content. Al2O3 takes A, Zr02 takes Z, Sio2 takes S, the national standard uses this abbreviation, such as No. 33 fused cast zirconium corundum brick, abbreviated as AZS—33#, No. 36 fused cast zirconium corundum brick, abbreviated as AZS—36#, No. 41 fused cast zirconium corundum brick, abbreviated as AZS—41#.
 
The fused zirconia corundum brick is a white solid formed by pure alumina powder and zircon sand containing zirconia of 65% and about 34% of silica in the electric melting furnace and then injected into the mold to be cooled. The structure consists of an eutectoid and a glass phase of corundum and zirconium, which are phased as eutectoids of the corundum phase and the zircon oblique phase, and the glass phase is filled between their crystals.
The fused cast brick manufacturing process combines selected zircon sand and industrial alumina powder in a 1:1 ratio, plus a small amount of NaZO (added in the form of sodium carbonate), B20: (added in the form of boric acid or borax), mixing Uniform, after casting at 1800~1900 °C, it can be obtained by casting and casting with zr02)33%. On this basis, using partially desiliconized zircon sand as raw material, a cast brick containing ZrO236%~41% can be obtained. Zirconium corundum bricks are made of industrial alumina powder and selected zircon sand, and have a refractory product with a ZrOZ content of 33% to 45%. Zirconium corundum bricks are mainly used in glass industry tank kiln. Rongsheng refractory materials provide you with high quality refractory materials.
 
For the conductivity temperature curve of fused zirconium corundum brick, the conductivity temperature of fused zirconium corundum brick is known. The higher the temperature of fused zirconium corundum brick, the higher the conductivity, for the content of various ZrO2 There is also a difference in the electrical conductivity of the zirconium corundum brick. Generally, when the ZrO2 content is decreased, the electrical conductivity is increased. When the temperature is 1400 ° C, the conductivity of ZrO2 in the brick is 10 times higher than that of the 53%-55% AZS brick, but when the temperature is 400 ° C, it is increased by 100 times. Therefore, for the fused zirconia corundum brick which has been used, the conductivity of each part is also different. In this case, the conductivity of the contact surface of the molten glass is high, and as the distance of the contact surface increases, The conductivity also decreases.
 
Zhengzhou Sunrise Refractory Co., Ltd. has been producing and selling refractory materials for many years. Our years of experience have made us more professional. If you have any questions or questions about fused zirconium corundum bricks, please call Sunrise Refractory Co., Ltd., our company will provide you with High quality refractory materials and intimate service.

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