Kinetics about Refining Ultra Low Sulphur Steel by Using Slag Systems with BaO

Under the condition of realizingS ≤ 5×10^-6 in molten steel, the reaction mechanism of refining de-sulphurization for the steel with the lowest surphur content was investigated by high temperature chemical dynamic experiment in 1 kg Si-Mo bar pipe-furnace. The reaction progression, rate constant, bottle neck in reaction, and affecting factors were determined.