Mullite Insulation Brick

发布时间:2020-07-01 10:47浏览次数:
Brand Name:JM23-0.8或JM23-1.0或JM26-0.8或JM26-1.0或JM27-1.0或JM28-1.0或JM28-0.8
Description:
                  High alumina lightweight insulating refractory brick is a kind of insulation material with organic matter as lignition loss substance in order to increase the porosity of refractory,which has such advantages as high porosity,low bulk density,good insulation effect,high strength,low thermal conductivity and long lifetime. For various industrial kilns &furnace,it is an essential insulating refractory for energy saving.
 Physical and Chemical Index:                  
项目Item 指标Index
JM28-1.0 JM28-0.8 JM26-0.8 JM26-1.0 JM27-1.0 JM23-0.8 JM23-1.0
物理指标Physical properties
体积密度Bulk density(g/cm3 ≤1.0 ≤0.8 ≤0.8 ≤1.0 ≤1.0 ≤0.8 ≤1.0
常温耐压强度Cold crushing strength(MPa) ≥4.5 ≥4.0 ≥3.0 ≥3.5 ≥4.0 ≥3.0 ≥3.5
导热系数Thermal conductivity(W/m•k) ≤0.40 ≤0.35 ≤0.35 ≤0.40 ≤0.40 ≤0.35 ≤0.40
导热系数Thermal conductivity(W/m•k) ≤0.40 ≤0.35 ≤0.35 ≤0.40 ≤0.40 ≤0.35 ≤0.40
对应温度下重烧线变化率Permanent linear change on reheating at corresponding temperature×24h(%) 1510℃,≤0.3 1510℃,≤0.3 1400℃,≤0.3 1400℃,≤0.3 1450℃,≤0.3 1300℃,≤0.3 1300℃,≤0.3
长期使用温度Long time working temperature(℃) 1490 1490 1380 1380 1430 1280 1280
化学成分Chemical composition (%)
Al2O3 ≥64 ≥64 ≥52 ≥52 ≥59 ≥48 ≥48
Fe2O3 ≤0.8 ≤0.8 ≤0.9 ≤0.9 ≤0.8 ≤1.2 ≤1.2
CaO+MgO ≤0.6 ≤0.6 ≤0.8 ≤0.8 ≤0.6 ≤0.8 ≤0.8
Na2O+K2O ≤0.8 ≤0.8 ≤1.2 ≤1.2 ≤0.8 ≤1.2 ≤1.2

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