包头铁水固氧提铌的工艺

Process of Extracting Niobium with Solid Oxidizer from Pig Iron

摘要: 提出了用固态氧化剂(轧钢铁皮或高品位铁精矿)从包头铁水提铌的工艺,简称铁水固氧提铌工艺。实验得到了固氧提铌最佳工艺参数:铁水温度为1350℃;W(氧化剂重量/生铁重量)为5%~10%。探讨了非标准状态下,固氧提铌过程铁水中的Nb、Si、Mn、C和P的热力学行为,分析了氧化剂加入量对铁水温度的影响。

Abstract: The process of extracting niobium with solid oxidizer(Fe₃O₄) from hot iron (called SOENb for short) produced in Baotou China was advanced. The optinum process parameters were below:The temperature of hot iron is 1 350℃; W(oxidizer burden weight/hot iron weight) is 5%-10%. The thermodynamical action of Si, Mn, C, P, Nb in hot iron under the actual conditions was discussed and the effect of oxidizer burden on the iron temperature was analysed.