高含磷稀土硅化物合金的熔渣脱磷  

Dephosphorization of RE-Silicide Alloy in Presence of Slag

作　　者：赵群[1] 涂赣峰[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004

出　　处：《稀土》2001年第5期16-18,共3页Chinese Rare Earths

基　　金：辽宁省人事厅博士后基金资助项目

摘　　要：为了降低稀土硅化物合金中有害杂质磷的含量 ,尝试了采用 Ca O- Ca F2 为基础渣系对合金进行脱磷实验。结果表明 :最佳脱磷时间为 15分钟 ;Ca O∶ Ca F2 为 5∶ 1既能保证脱磷效果 ,又有较好的流动性 ;渣比与脱磷率成正比 ;少量 Ba CO3、Fe2 O3能明显改善渣的脱磷能力。根据本研究结果进行的综合实验取得了较好的脱磷效果 ,脱磷率达 76 .7%In the present work,RE-silicide alloy containing P impurity was refined in CaO-CaF 2 combined fuse to remove P from the alloy. The results show that 15 minute is long enough for dephosphorization;CaO∶CaF 2 ratio of the fuse should be kept around 5∶1 to ensure the effective dephosphorization and good fluidity;A little BaCO 3 and Fe 2O 3 can obviously enhance the dephosphorus capability of the fuse.At last,the dephosphorus rate is up to 76.7% as a result of general experiment based on the above works.

关 键 词：稀土硅化物合金 熔渣 脱磷 冶炼 稀土精矿 

分 类 号：TF845[冶金工程—有色金属冶金]