AZS bricks, also known as electrofused AZS refractories, are named after their three primary oxide components in order of concentration – Alumina (Al2O3), Zirconia (ZrO2), and Silica (SiO2). The abbreviations A, Z, and S are taken from the first letters.
The manufacturing process of fused AZS blocks mixes selected zircqisand and industrial alumina powder at a ratio of 1:1, plus a smalamount of Na2O(added in the form of sodium carbonate), B20.added in the form of borax)flux, and mix Uniform, melted at1800~1900 ℃ and then cast into shape, can produce 33% zr02fused cast blocks. On this basis, using partially desiliconized zirconsand as raw material, fused-cast blocks containing 236% to 41%ZrO can be produced, Using industrial alumina powder and selectedzircon sand as raw materials, refractory products with a ZrOZcontent of 33% to 45% are made. Fused AZS Blocks are mainly usedin qlass industrial tank kilns, and Fused AZS Blocks are mainly useaas refractory materials for high-temperature and erosion-resistantkilns such as qlass industrial tank kilns, slides in the steel industryand kilns in the soda alkali industry.
The numbers denote the percentages of Zirconia and Alumina. For example: * AZS-33 refers to 33% ZrO2 electrofused refractory * AZS-36 denotes 36% ZrO2 electrofused brick * AZS-41 indicates 41% ZrO2 electrofused lining material Higher Zirconia and Alumina contents impart improved corrosion resistance and thermal shock protection. But they also increase cost. The optimal AZS grade depends on the glass type, furnace design, and operating conditions. Proper brick selection maximizes service life and cost efficiency.
Fused Cast AZS33 Brick is widely used for glass furnace for superstructure tuckstones, working pool side wall, paving tiles, feeder channels, tank bottom, C-shaped spout brick and doghouse crown,etc.
Fused Cast AZS36 Brick is mainly used for sidewall, doghouses,throat, Dam blocks, electric block corners.
Fused Cast AZS41 Brick is mainly used for sidewalls, doghouses,throat,bottom bubble brick, barrier brick, electric block corners.
AZS refractories are categorized by zirconia content into 33#, 36#, and 41# grades. Key raw materials for quality electrofused AZS bricks include: * High purity alumina (Al2O3 > 98.5%) * Zircon sand (ZrO2 > 65.6%) * Desiliconized zircon (ZrO2 > 85%) * Soda ash (Na2CO3 ≥ 99%) * Boron sand (B2O3 ≥ 37%) * Rare earth oxides (Y2O3 ≥ 45%) Equal parts alumina and zircon sand produce ~33% ZrO2 AZS-33. Higher zirconia AZS-36 and AZS-41 require desiliconized zircon addition. This also improves AZS-33 properties. Alumina is derived by refining bauxite ores to remove silicates, iron, titanium and other oxides, achieving very high purity levels above 98% Al2O3. Desiliconized zircon is produced by smelting zircon concentrates with carbon in an electric arc furnace to reduce silica.Zircon, also called zirconium silicate, contains 67.1% ZrO2 and 32.9% SiO2. Its high 2550°C melting point, low expansion, and chemical resistance to liquids and acids make it ideal for AZS bricks.
Henan Hongtai Kiln Refractory Co., Ltd. is established in 2002, located in Xinmi City, 40kilometers southwest of Zhengzhou City in Henan Province, close to Jingguang, Longhai railway lines, with road transport facilities. Rich resources of Refractory materials, adequate and qualified fuel in this area, provide unique conditions for refractory production, shipping and refractory industry development. Main products include different kinds of refractory brick:Fire Clay Brick, High Alumina Brick, Light Weight Insulating Brick,Corundum Brick,Mullite Brick,AZS Bricks, Refractory Balls ,Refractory concrete,refractory castable,Acid resistant brick etc.They are widely used in Iron and steel, Nonferrous metals, Building materials(Cement,Glass,Ceramic), Petrochemical, Energy & Incineration etc industries. Our products have been exported to India,Turkey,Vietnam,Malaysia and Kazakhstan etc.“Science-Technology Innovation, Cooperation for Win-Win”
1.Our packaging is as per customer’s request 2.Normal goods delivered by sea transport 3.Sample shipping by express 4.We will shipping and delivery goods timely, quality and quantity guaranteed, and also in accordance with the contract and customer's requirement completely.
1.What's your payment terms? Various payment will be supported 2.What's your delivery time? Usually within 15-30 days after receive the deposit. 3.How about the packing? 25 kg/bag,outer woven bags with inner plastic lining. 4.What documents you provide? Usually, we provide Commercial Invoice, Packing List, Bill of lading, COA , TDS. etc.If your markets have any special requirements, let us know. 5.How about the validity of the products? According to the products you ordered. 6.What is loading port? Usually isTianjin, Shanghai or Qingdao.