Kalksandstein für Winderhitzer

ITEMSRatingAllowable deviation in duplicate examinationRG-95Chemical Ingredients %SiO2≥95-1Al2O3≤1.00.1Fe2O3≤1.30.1Apparent porosity %≤22(24)0.5Apparent density g/cm3≤2.320.01Mpa Cold crushing strength Mpa≥45(35)—10(—7)Remaining quarts% ≤≤1.0——Refractoriness under load (To 6),°C≥165020Creep(0.2Mpax1550°C*50h),%≤0.8——Thermal expansion coefficient(1000°C),%≤1.25—— silica brick for hot-blast stove is made of silicon raw material in which silicon oxide is above 93%, it is used to build the hot-blast furance. Its capability of acid-fast erosion of acid slag is powderful; Its softening point with high temperature and load of the birck is high. The brick also does not shrink in burn repeatedly.