furnace working and thermal insulation lining use

Furnace working and thermal insulation lining use alumina bubble refractory brick 1.Definition: It is the thermal insulation and fire resistant product, which is mainly made of the alumina bubble ball. 2.Highlight: 1).Alumina contents ranging above 98% 2).High strength at common temperature (20°C). 3).Good thermal insulation Feature 4).Low shrinkage on reheating 5).Excellent spalling resistance (Thermal Shocks). 6).Save energy about 40%--50%. 3.Production procedure: batch---mold---dry--sinter. 4.Properties ITEM Properties Al2O3 % ≥98% SiO2 % ≤0.5% Fe2O3 % ≤0.5% Bulk Density 1.3 1.4g/cm3 Apparent Porosity 60% 80% cold crushing strength 10 20 MPa Thermal conductivity 0.7 0.8(w/m•K) Refractoriness under load at 0.2MPa ≥1650°C Permanent Linear Change on reheating ≤0.3 3hours 1600°C 5. Application: 1). As lining components for the high temperature industries furnace (≤1800, such as refractory, electronics, ceramics industries). 2).As Thermal insulation components for the high temperature heating equipments, such as gas making furnace, gasification furnace of petrochemical industry, reacting furnace of off-colour industry, electric induction furnace of metallurgical industry.