By mixing light-burned magnesia powder, magnesite particle and water in different proportions, the cylindrical specimens were formed by hydraulic forming. The effects of different proportions and forming pressures on the physicochemical properties of the specimens were discussed through experimental analysis. The content of M g O and ignition reduction in the specimens could be adjusted by using different proportions of light-burned magnesia powder and magnesite particle to meet the requirements of slagging process and furnace protection for converters in different steel plants.

Light-burned magnesia ball is mainly used in converter steelmaking with magnesium slagging process. The use of light-burned magnesia ball with magnesium slagging can provide sufficient active MgO to slag, inhibit the dissolution and diffusion of MgO to slag in lining, reduce lining erosion, protect lining and increase furnace life.

In recent years, the National Experimental Research on light-burnt magnesia spheres is gradually deepening. Now the following steps are mainly taken to test and study light-burnt magnesia spheres.