Customized Refractory Material High Temperature Aluminium Insulating Fire Brick High Alumina Refractory Brick Product Description High Alumina Refractory Bricks Introduction High alumina brick is a kind of refractory material, the main component of this kind of refractory brick is AL2O3. If the Al2O3 content is higher than 90%, it is called corundum brick. Due to different resources, national standards are not completely consistent.In China, according to the content of Al2O3 in high alumina bricks, it is usually divided into three grades: Grade I--Al2O3 content>75%; Grade II--Al2O3 content is 60~75%; Grade III--Al2O3 content is 48~60%. The production process of high-alumina bricks and multi-clinker clay bricks is similar. The difference is that the proportion of clinker in the ingredients is higher, which can be as high as 90~95%. The clinker needs to be classified and screened before being broken. Higher, such as I, II and other high alumina bricks are generally 1500~1600 ºC when fired in tunnel kiln. High Alumina Refractory Bricks 1. High refractoriness; 2. High temperature strength; 3. High thermal stability; 4. Neutral refractory; 5. Good resistance to acid and basic slag corrosion; 6. High refractoriness under load; 7. High temperature creep resistance; 8. Low apparent porosity; Use Of High Alumina Refractory Bricks High alumina brick is widely used for Widely used in blast furnaces, Hot Blast Stove,Steel ladle lining, Reheating furnace, Cement kiln, Tunnel kiln,boiler, coke oven, carbon furnace, glass kiln , Steel smelting furnace and various kiln lining and thermotechnical equipment, etc. Item Index International Code Name SK35 SK36 SK37 SK38 SK40 Chinese Code Name LZ-48 LZ-55 LZ-65 LZ-75 LZ-80 Al2O3,% ≥48 ≥55 ≥65 ≥75 ≥80 Fe2O3,% ≤2 ≤2 ≤2 ≤2 ≤2 RefractorinessºC,min 1750 1770 1790 1790 1790 Apparent Porosity,% ≤22 ≤22 ≤23 ≤23 ≤21 Bulk Density,g/cm3 2.25-2.35 2.25-2.35 2.25-2.35 2.25-2.35 2.25-2.35 Cold Crushing Strength Mpa ≥39 ≥44 ≥49 ≥54 ≥65 0.2Mpa Refractoriness Under Load T0.2 ºC,min ≥1420 ≥1470 ≥1500 ≥1520 ≥1530 Detailed Photos Standard sizing: 230 x 114 x 65 mm ,Special size and OEM Service also provide! The size is precise, providing kinds of shapes according to customer's drawing Specification High Alumina Refractory Brick Physical and Chemical Index: Item Properties RS-80 RS-75 RS-65 RS-55 RS-48 Al2O3 (%) 80 ≥75 ≥65 ≥55 ≥48 Refractoriness (°C ) ≥1790 ≥1790 ≥1790 ≥1770 ≥1750 Bulk density (g/cm3) 2.65 2.5 2.45 2.4 2.3 Softening temperature under load (°C ) 1530 ≥1520 ≥1500 ≥1470 ≥1420 Reheating Linear changes Rate (%) 1500°CX2H 0.1 0.1 0.1 0.1 0.1 1450°CX2H -0.4 -0.4 -0.4 -0.4 -0.4 Apparent porosity (%) 22 ≤23 ≤23 ≤22 ≤22 Cold crushing strength (Mpa) 55 ≥50 ≥45 ≥40 ≥35 Application steel furnace, glass furnace, sodium silicate furnace, ceramic shuttle kiln, cement rotary kiln, blast furnace, electric furnace,blast furnace and reverberatory furnace. Production Process Product Application Packaging & Shipping Packaging : Packed by sea-worthy wooden pallet + shrink wrapped + carton For example, Standard size of Fireclay brick : 230x114x65mm Shipping : 384pcs/plt x 18plts in one 20 feet container; Company Profile RS Refractories Co., Ltd. is located in Henan, China. Our company has professional scientific and technical personnel and production team, and we have our own fully automated factories. For more than ten years, we have focused on the development and innovation of refractory mate