What are the benefits of using lightly burned magnesia balls? Light burnt magnesia ball is an alkaline refractory product. CaO can replace CaO in lime, ensure the basicity of steel-making slag and reduce the amount of lime added. CaO can react with SiO 2 in slag, CaO+SiO 2=3CaO.SiO 2, Ca2SiO 4, C3S and C2S are all high melting point substances. If the CaO content in slag is enough, the main component of light burning magnesia ball is MgO. Although adjusting the operation of MgO in slag can reduce the superheat of slag and thicken the slag, using C-O reaction C(FeO)=Fe+CO can reduce the content of FeO and the saturated solubility of MgO in slag, making it easier for MgO in slag to reach or exceed the saturated value. Therefore, the modified slag has both high refractoriness and suitable viscosity, which meets the conditions of slag splashing and furnace protection. Therefore, it can also be properly carburized in lightly burned magnesia spheres.

Function of Magnesium Spheres

There are four main advantages of using light burnt magnesia balls:

1. Slag basicity suitable for slag splashing protection: R (CaO/SiO 2) about 3.5

2. Suitable slag retention (ton steel): 90-100Kg/t

3. Appropriate slag splashing time: 2-4 min

4. Controlling the MgO value of the final slag:

5. The content of MgO in the final slag (recommended value%) should be selected as appropriate light-burned magnesia balls: <MgO>45%. The composition of light-burned magnesia balls should be adjusted according to the situation of converter final slag.