Desulfurization accelerant composition, molten iron desulfurization method and application thereof

The invention relates to the technical field of steel making, in particular to a desulfurization accelerant composition, a molten iron desulfurization method and application thereof. The desulfurization accelerant composition comprises a desulfurization accelerant and a desulfurization assistant; wherein the desulfurization accelerant contains aluminum and aluminum oxide, and the desulfurization assistant comprises carbonate and/or calcium aluminate. The desulfurization accelerant composition and the desulfurization method do not use fluorite, the fluorine content in waste water and waste residues can satisfy the environmental reference value, and the good desulfurization effect is achieved. 本发明涉及炼钢技术领域，具体涉及种脱硫促进剂组合物、铁水的脱硫方法及其应用。本发明的脱硫促进剂组合物包括脱硫促进剂和脱硫助剂；其中，所述脱硫促进剂含有铝和氧化铝，所述脱硫助剂包括碳酸盐和/或铝酸钙。本发明的脱硫促进剂组合物和脱硫方法不使用萤石，能够使得废水废渣中氟含量满足环境基准值，并且具有良好的脱硫效果。