锂云母在铁水预处理中对CaO-FeO-CaF_2渣系脱磷的影响  

Effect of Lepidolite on Dephosphorization of CaO-FeO-CaF_2 Slags in the Hot Metal Pretreatment

作　　者：李进[1] 王一成[2] 王明林[2] 仇圣桃[2] 

机构地区：[1]昆明理工大学冶金与能源工程学院,云南昆明650093 [2]钢铁研究总院连铸技术国家工程研究中心,北京100081

出　　处：《钢铁钒钛》2011年第1期67-70,共4页Iron Steel Vanadium Titanium

摘　　要：在实验室1 340～1 360℃条件下,进行了CaO-FeO-CaF2渣系中添加锂云母的铁水预处理脱磷试验。研究了锂云母添加量对渣系熔点和脱磷效果的影响,以及(CaO+锂云母)/FeO对脱磷的影响。研究结果表明:CaO-FeO-CaF2渣系随锂云母含量的增加,渣系熔点逐渐降低;在1 340～1 360℃,将铁水中的硅含量控制在0.01%左右,wCaO/wFeO=1.29,添加10%锂云母可以将铁水中的磷含量降低到0.005%;在2%萤石、10%锂云母条件下,w(CaO+锂云母)/wFeO在1.83～1.86范围内脱磷率最高可以达到95%。At 1 340 ～ 1 360 ℃ under laboratory conditions,the research on the dephosphorization of the CaO-FeO-CaF 2 slags additive lepidolite in hot metal pretreatment has been completed.Influences of lepidolite additive quantity on the slag melting point and dephosphorization effects have been researched.The results show that with lepidolite content increasing,the melting point of CaO-FeO-CaF 2 slags decreases;at 1 340 ～ 1 360 ℃,the silicon content is controlled at 0.01% in the molten iron,and when w CaO / w FeO =1.29,adding 10% lepidolite to the hot metal,the phosphorus content can be down to 0.005%;In the conditions of 2% fluorite and 10% lepidolite,when w（CaO＋lepidolite） / w FeO in the range of 1.83～1.86,the dephosphorization rate of molten iron can be maintained at 95%.

关 键 词：铁水预处理 脱磷 锂云母 CaO-FeO-CaF2渣系 

分 类 号：TF704.4[冶金工程—钢铁冶金]