Используется объемную плотность ГМ-23

GM series lightweight heat-insulating refractory brick uesd fire bricks Description GM series lightweight heat-insulating refractorybricks are made from good quality and superpure raw materials, with strictly classified fillings according to their grades. These fillings can form a uniform pore structure after burnt during the process of manufacture.Each grade of products has unique design to meet different thermal, physical and chomical demands. Features ·Low thermal conductivity GM series lightweight heat-insulatingrefractory bricks have an excellent feature of heat insulation. ·Low heat capacity GM series lightweight heat-insulating refractorybricks store very little heat because of their characters of lightweight and low thermal conductivity, which causes good energy saving especially in batch operation. ·Low content of impurities GM series lightweight heat-insulating bricks have high refractorieness with low content of iron and alkali-metal. High content of alumina enables them to maintain nice performances in reducing atmosphere. ·High hot compressive strength ·Accurate size Accurate sizes of the bricks and thin brickwork joints expedite bricklaying and guarantee brickworks high intensity and good stability. ·The refractorybricks can be processed into special shapes to avoid the joints and the number ofrefractory bricks. Application: The refrcatory linings of hot surfaces or backing heat-insulating layers of other refractory materials. The refractory linings or heat-insulating materials of the industrial furnaces in the petroleum or chemical industries, such as, ethylene pyrolysis furnaces, tubular furnaces, reforming furnaces of synthetic ammonia, gas generators and high-temperature shuttle kilns, etc. Main Physical and Chemical Properties GM-26 PROPERTIES BRAND TType Bulk Density g3 Reheat Linear Change 1400×12h % Cold Compressive Strength Mpa Cold Modulus of Rupture Mpa Thermal Conductivity 350wm·k Al2 O3 % SIO2 % Fe2 O3 % GM-26 A 0.7 -0.9 2.0 1.2 0.21 54 42.5 0.8 GM-26 B 0.8 -0.7 2.5 1.4 0.25 55 41.5 0.8 GM-26 C 0.9 -0.5 2.8 1.6 0.30 56 40.5 0.9 GM-26 D 1.0 -0.5 3.2 1.8 0.32 56 40.5 0.9 Main Physical and Chemical Properties GM-28 PROPERTIES BRAND Type Bulk Density g3 Reheat Linear Change 1500×12h % Cold Compressive Strength Mpa Cold Modulus of Rupture Mpa Thermal Conductivity 350wm·k Al2 O3 % SIO2 % Fe2 O3 % GM-28 A 0.8 -1.0 2.5 1.4 0.28 64 33 0.7 GM-28 B 0.9 -0.8 2.8 1.6 0.32 65 32 0.6 GM-28 C 1.0 -0.7 3.5 1.8 0.34 66 31 0.6 Main Physical and Chemical Properties GM-23 PROPERTIES BRAND Type Bulk Density g3 Reheat Linear Change 1300×12h % Cold Compressive Strength Mpa Cold Modulus of Rupture Mpa Thermal Conductivity 350wm·k Al2 O3 % SIO2 % Fe2 O3 % GM-23 A 0.5 -1 1.2 0.9 0.16 42 54 0.8 GM-23 B 0.55 -0.6 1.3 1.0 0.17 42 54 0.8 GM-23 C 0.6 -0.5 1.6 1.1 0.19 44 52 0.8 GM-23 D 0.8 -0.4 2.2 1.3 0.24 45 51 0.9 GM-23 E 1.0 -0.2 2.8 1.7 0.31 45 51 0.9 The above data is the company's measured, on average, the actual production can be adjusted according to user needs.