The basic tasks of steel making are decarburization, dephosphorization, desulfurization, deoxidation, removal of harmful gases and non-metallic inclusions, increase of temperature, and adjustment of molten steel composition. Oxygen supply, slagging, agitation, and alloying are the means to accomplish the steel making task.

Dolomite is a slag-regulating agent, which is divided into raw dolomite and light-burned dolomite. 

According to the needs of the technology of slag splashing protection, adding the appropriate amount of dolomite to maintain the MgO content in the slag to saturation or supersaturation, to reduce the erosion of the initial acid slag on the lining, so that the final slag can be made sticky, and the slag splashing after tapping Requirements.