Schamottestein

Fireclay bricks use Chamotte that the fire clay is calcinated as the main material. These bricks consist of fire clay and binder.The main applications are the low temperature parts such as blast furnaces and hot blast furnaces, waste incinerators and glass melting furnaces. Due to the scale-up of a variety of industrial furnaces and severity of operating conditions, super dense fireclay bricks that made of more refined chamotte being calcinated at high temperature are applied more than before. BrandItem Fireclay BrickN-1N-2aN-3aN-4Al2O3 % ≥42≥40≥40Refractoriness °C ≥1750≥1730≥1710≥1690Refractoriness under Load °C ≥1400≥1350≥1320≥1300Reheat linear change % 1500°C×2h 1400°C×2h +0.1 -0.4+0.1 -0.51350°C×3h +0.2 -0.5+0.2 -0.5Apparent porosity % ≤22≤24≤24≤24Cold crushing strength Mpa ≥29.4≥24.5≥19.6≥19.6