Geringe Kriechneigung hohe Tonerde feuerfesten Kugeln

High alumina low creep refractory balls 1.Definition: Refractory ball is made of bauxite chamotteas mainly raw material, through scientifically confecting, molding, and high-temperature calcinating etc profess. 2.Highlight: 1). High mechanical strength, and long working line2). Fine chemical stability, and not chemically react with the material3). Fine high temperature resistant performance, and the highest temperature of the refractory ball can be reach to 1400 centigrade. 3.Properties: Brand Item: HXRB-004 Property Al2O3 %≥ 65%MgO %≥ Fe2O3 % ≤ 1.5% Refractoriness °C ≥ 1790 Bulk density g/cm3 ≥ 2.6 Apparent porosity % ≤ 22 cold crushing strengthMPa≥ 15 Refractoriness under load at 0.2MPa °C ≥ 1500 Linear Change rate at 1500°C×2H on reheating % 0.1-0.4 Creep rate (1450°C×50h 0.2MPa) below1.0 4. Application: Widely used in the hot-blast stove and Heating transformation equipments in the steel making industry.