QN-JM-30 Patentfeuerfeste Schamottestein

QN-JM-30 Refractory fire brick 1.Thermal conductivity w/m .k (400°c) 0.41. 2.Lower content in impurities. 3.Safty application temperature:1650 Deg. Centigrate. 4.Bulk density:1.05 g/cm3 5.Crushing strength Min :2.7Mpa. 6.Cross-bending strength(modulus of rapture) Min :2.0Mpa Index QN-JM-30 Safety application temperature　　 °C 1650 Bulk density g/cm3 1.05 Crushing strength Mpa ≥ 2.7 Reheat linear change % ≤ 1600×24h -0.6 Reversible thermal expansion 1090 °C % ≤ 0.8 Thermal Conductivity w/m.k 400 0.41 600 0.43 800 0.45 1000 0.48 Al2O3 % ≥ 68 Fe2O3 % ≤ 0.5 SiO2 29