铁水脱磷预处理目前主要有在鱼雷车、铁水罐中喷粉脱磷和在氧气转炉中对铁水进行脱磷处理两种方式。采用鱼雷车或铁水罐内喷粉脱磷方法,须先对铁水进行脱硅处理,将w[Si]脱除至0.10%~0.15%,然后再对铁水进行脱磷处理。脱磷剂主要采用Fe2O3-CaO-CaF2系,炉渣碱 Hot metal dephosphorization pretreatment At present, there are mainly two ways of dephosphating in a torpedo car and a hot metal ladle, and dephosphorization of molten iron in an oxygen converter. Using the method of powder dephosphorization in a torpedo car or hot metal tank, the hot metal needs to be desilluminated firstly to remove the w [Si] from 0.10% to 0.15%, and then the molten iron is dephosphorized. Dephosphorization agent mainly uses Fe2O3-CaO-CaF2 series, slag alkali