... raw materials,2. Sinter by high-pressure, high temperature until melting, Product features: 1. High cold crushing strength and bending ... 3. Resist the spalling and erosion. Product application:1. Used for the roof to all kinds of steelmaking furnace ;2. RH ... , VOD, AOD, and other refining installations; 3. Building industry, glass furnace, cement rotary kiln etc. Magnesia chrome brick for Glass kiln