Grade 30 Kiln Insulating Fire Bricks

oupled with high insulating efficiency expands the extensive applications of IFB in high-grade refractory powder and materials in good purity.During the process of production ,Website:http://www.jceco-tech.com,organic and multiple filling materials are injected according to the required proportion ,the brick is compressed in vacuum and sintered under high temperature.FeaturesLow thermal conductivityHigh purity and low iron contentGood thermal resistance with direct access to fireSuperior thermal shock resistanceAccurate dimension and easy cuttingTypical ApplicationsCracking FurnaceConversion FurnaceHeating equipmentRefining equipmentReproduction equipmentHot Blast Stove Description Grade 23 Grade 26 Grade 28 Grade 30 Classification Temperature 1300C/2300F 1400C/2600F 1500C/2732F 1550C/2822F Density(kg/m3) 600 800 900 1000 Cold Crushing Strength (MPa) 1.2 1.8 2.5 3.3 Modulus of Rupture(MPa) 1.0 1.7 2.3 3.1 Permanent Linear Change (%)x24hrs ≤0.6 ≤0.6 ≤0.8 ≤0.9 Thermal Expansion  (%)1000C 0.5 0.52 0.52 0.53 Thermal Conductivity (W/m.k) 350C 0.18 0.25 0.33 0.38 400C 0.20 0.29 0.35 0.40 600C 0.24 0.32 0.37 0.42 Chemical Composition(%) Al2O3 42 56 67 73 SiO2 55 41 30 24 Fe2O3 ≤1 ≤0.8 ≤0.7 ≤0.7 K2O+Na2O 1.1 1.7 1.7 1.7