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refractory material HML series Isulating Fire BricksHMQ series Insulating Fire Brick is manufactured according to the ASTM standard by our company. This kind of product is evenly distributed with small porosity; it could reach high refractoriness under load as well as ensure the apparent porosity. Which possess low thermal capacity, low heat conductivity, low impurities,high strength, etc.HMQ series insulating fire brick is suitable to the environment where the temperature varies between 1260 and 1650°C and divided into 4 grades.It could be applied to the refractory lining of the industrial furnace or the insulation lining of the refractory material. Such as annealing furnace,melting furnace,charcoals heating furnace,heating furnace,pyrolisis furnace,tunnel kiln,roller kiln , etc. It also could be used in reducing atmosphere furnace.Brand nameHMQ-23HMQ-26HMQ-28HMQ-30Classification tem.°C1260143015401650Bulk densityg/cm30.480.790.891.02Cold crushing strengthMPa11.52.02.5Modulus of ruptureMPa0.91.01.51.8Permanent linear contract%1230°C×24h1400°C×24h1510°C×24h1620°C×24h-0.1-0.2-0.4-0.7Thermal conductivity400°CW/m•K0.130.250.300.37600°C0.150.270.320.39800°C0.170.300.340.421000°C0.190.330.360.451200°C——0.350.380.48Chemical compositionAl2O3%43.2656.3465.8070.40Fe2O31.100.800.730.62 HML series Isulating Fire Bricks is evenly distributed with little porosity, and could reach high strength under high temperature and low Thermal conductivity at the same time ensuring the apparent porosity. Which possess low thermal capacity, low heat conductivity, high strength, etc, it can reduce heat absorption and energy consumption as well as shorten the working period.HML series insulating fire brick is suitable to the environment where the temperature varies between 1300 and 1550°C and divided into 4 grades.Mainly used for the furnaces and kilns of the insulating part and the lining far from the erosion of the megathermal meiting materials.Brand nameHML-1300HML-1400HML-1500HML-1550Classification tem. °C1300140015001550Bulk density g/cm30.540.680.740.83Cold crushing strength MPa1.21.52.13.1Permanent linear change %1300×8h1400×8h1500×8h1550×8h0.210.380.460.4Thermal conductivity 350±10°C W/m•K0.180.200.250.28Chemical composition%Al2O343.855.162.467.3Fe2O31.140.810.730.62