【摘要】 在高频感应炉上以 Ar 为载气,向脱氧良好的 Mn13钢液喷吹 CaC₂-CaF₂粉料进行还原脱磷,可将钢液中含磷量迅速降低。脱磷率最高可达74.7%。喷入钢液中 CaC₂的分解受温度和钢中碳活度的控制。喷吹温度对脱磷率有极其重要的影响。开喷温度在1490℃左右并尽量减少喷吹过程中的温降,则可获得最好的脱磷效果。粉料中 CaF₂配比对脱磷效果关系不大。用工业萤石也可得到良好的脱磷效果。更多还原

【Abstract】 Experiments on the dephosphorizatlon of well-deoxidized manganese steel（Mn13）containing high phosphorous by injection of CaC₂-CaF₂ powder using argon as a carrier gas through a submergedlance were made under reducing atmosphere in high-frequency induction furnace.The experimentalresults showed that the content of phosphorous in the steel can be lowered quickly and considerably andthe degree of dephosphorization can be as high as 74.7%.The decomposition of CaC₂ in the steel isaffected by the initial carbon activity and injection temperature.The most important factor affectingthe results of dephosphorization is the injection temperature.If the starting temperature of injectionis 1490℃ and the temperature drop is controlled as slow as possible,the best dephosphorizationresults can be achieved.The content of CaF₂ in the powder only has a little effect on the resultsof dephosphorization and the good results can be also obtained by using industrial fluorite.更多还原