Feature： a.Slagging fast，good liquidity, high purification rate, desulfuration rate up to 40-85%. b.Easy to use,stable working performance,economical and effective. c.Greatly shorten the smelting time, not only get the purpose of the desulfurization,also lower the casting cost. Using Method: Pre-added to ladle,must above the molten steel impact place. Add along with the molten flow,with better effect. Pre-added a part below the ladle,another pare add along with flow.