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萤石对环境的污染日益受到重视,为了减少在精炼过程中CaF2的使用量,达到精炼渣低氟、无氟化的目的,开展了相关研究。综述了铝酸钙基精炼渣的性能以及B2O3,Li2O,BaO等替代物对精炼渣熔化温度、黏度以及脱硫能力、耐火材料侵蚀的影响。已有研究表明,使用铝酸钙基精炼渣能够有效降低CaF2的使用量,并具有良好的熔化性、发泡性以及脱硫性能;B2O3,Li2O,BaO等替代物都能够降低精炼渣的熔化温度和黏度,Li2O和BaO的加入增加了渣中O2-的活度,有利于提高精炼渣的脱硫能力。此外,精炼渣黏度的降低也促进了渣金界面反应的发生以及钢液中夹杂物的吸收。
Fluorite environmental pollution increasingly attention, in order to reduce the amount of CaF2 used in the refining process, to achieve low fluoride refining slag, non-fluoride-related research carried out. The properties of calcium aluminate-based refining slag and the effects of such alternatives as B2O3, Li2O and BaO on melting temperature, viscosity, desulfurization capacity and refractories erosion of refining slag were reviewed. Studies have shown that the use of calcium aluminate-based refining slag can effectively reduce the amount of CaF2, and has good melting, foaming and desulfurization performance; B2O3, Li2O, BaO and other alternatives can reduce the refining slag melting temperature And viscosity, Li2O and BaO added to increase the activity of O2 - slag, help to improve the desulfurization capacity of refined slag. In addition, the reduction of refining slag viscosity also promoted the occurrence of slag-gold interfacial reaction and the absorption of inclusions in molten steel.