含铌铁矿粉气基还原脱硫研究
陈义胜1，2，任树波2，宿洪亮2，陈红妃2，赵凯2
（1.内蒙古科技大学 分析测试中心，内蒙古 包头 014010 2.内蒙古科技大学 材料与冶金学院，内蒙古包头 014010）
关键词：气基还原；含铌铁矿；脱硫率
中图分类号：TF16 文献标识码：A
摘要：本文实验研究了白云鄂博含铌铁矿粉气基选择性还原、熔分富集铌过程中硫的脱除。在本实验条件下含铌铁矿粉中硫通过气化还原和真空熔分过程可以很好脱除，其中在气基选择性还原过程硫以H2S形式气化脱除，最佳脱硫条件是：还原温度950℃、氢气流量60 L/h、还原时间2 h；在真空熔分过程硫以FeS形式进入铁相与富铌渣分离。实验得到硫最佳脱除率可达到99.79%。
Studyon the desulfurization of Bayan Obo Nb-bearing iron ore powder in the gaseousreduction
CHENYi-sheng1，2,REN Shu-bo2, XU Hong-liang2, CHEN Hong-fei2,ZHAO kai2
(1. Analysis and Testing Center, Inner Mongolia University of Science and Technology, Bao tou 014010
2. Materials and Metallurgy School, Inner Mongolia University of Science and Technology, Baotou 014010)
Keywords:gas-based reduction; containing niobium orepowder; desulfurization rate
Abstract：The removal sulfur methods were explored experimentally in the processof hydrogen selective reduction of Bayan obo iron ore fines containing niobium andin process of the vacuum melting iron for the enrichment of niobium slag. Underthe condition of this experiment, thesulfur of iron ore powder was nearly all removed by both processes of the hydrogenreduction and the vacuum melting.In the hydrogenselective reduction process ,thesulfur escaped in the form of H2S gas, with the optimumconditions for desulfurization being as follows:thereduction temperature of 950℃, hydrogen flow rate 60 L/h, reaction time 2h.In the vacuum melting process, the sulfur escapes in the form of FeS from niobium rich slag and goes into the melting iron. The best sulfur removalrate reached 99.97%.