company news about Different firebricks have different colors and density

Look at the color is dark and red for magnesia chrome brick, high alumina clay brick is yellow, magnesia brick is red and yellow, silica brick is beige, lightweight carbon and silicon carbide products are black, fused corundum and mullite materials are generally white or grey. Look at the density, high alumina brick density is generally in the 2.3-2.7, clay brick 2.2-2.4., silica brick 1.8-2.0., Magnesia brick and magnesia-chrome brick 2.9-3.1, electric melting brick generally higher density in 3.1 above , neat cross-section, remaining light brick is not said, weigh will know.