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High-alumina bricks are aluminium-silicon refractory products made of bauxite clinker with a certain amount of combined clay with an Al2O3 content greater than 48%. The Chinese standard (GB/T2988-1987) divides high-alumina bricks into four grades according to physical and chemical indicators: LZ75, LZ-65, LZ-55 and LZ-48.
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Clay brick is a refractory product with AL2O3 content of 30%~48% produced from refractory clay. Clay bricks are widely used in many thermal equipment such as blast furnaces, hot blast furnaces, steel drum linings and steel pouring systems. Its production accounts for more than half of the total production of refractory materials. Clay bricks are divided into varieties such as ordinary clay bricks, multi-clinker clay bricks, whole raw clay bricks, and high-siliceous clay bricks.
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Fused cast zirconia corundum bricks
Fused and cast zirconia corundum products for glass kilns are divided into three grades according to their zirconia content: the nominal content of zirconia of AZS-33 products is 33%; The nominal content of zirconia in AZS-36 products is 36%; The nominal content of zirconia in AZS-41 products is 41%.
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Corundum bricks are aluminum-silicon refractory products with corundum as the main crystalline phase, and corundum bricks are divided into three types: fused corundum bricks, fused corundum re-sintered bricks, and sintered corundum bricks.
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Clay insulating refractory bricks
Clay insulating brick is a heat-insulating refractory product made of refractory clay as the main raw material with an Al2O3 content of 30%~48%. The Chinese standard (GB3994-1983) divides clay insulating bricks into NG-1.5, NG-1.3a, NG-1.3b, NG-1.0, NG-0.9, NG-0.8, NG-0.7, NG-0.6, NG-0.5 and NG-0.4 according to the bulk density.
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Low creep refractory balls are spherical refractories with relatively low creep rate in high temperature environments.
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Low creep high alumina brick is a refractory material with excellent performance, its main component is alumina (Al₂O₃), and the alumina content is high, generally 55% and above, and the specific content will vary according to different grades and production requirements. In addition, it also contains a small amount of other oxides such as silicon dioxide (SiO₂), iron oxide (Fe₂O₃) and other impurities, the content of impurities will affect the performance of bricks.
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Fused brick AZS33-Y is a high-grade refractory material. "AZS" is an abbreviation for "Alumina - Zirconia - Silica" (Alumina - Zirconia - Silicon Dioxide). The "33" usually represents a zirconia (ZrO₂) content of about 33%. This type of brick is mainly composed of corundum (α - Al₂O₃), oblique zircon (ZrO₂) and glass phase (SiO₂). The corundum phase provides high hardness and good wear resistance, the zirconia phase improves the thermal shock resistance of the material, and the glass phase helps bond other phases together at high temperatures.
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Fused brick AZS37-Y is a specific type of fused zirconia corundum brick (AZS fused brick), glass kiln is the main application field of fused brick AZS37-Y, which can be used to build key parts such as pool wall, ballast roof, breast wall and other key parts of the masonry glass furnace, and can withstand the high temperature erosion and erosion of molten glass.
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