含铌铁矿粉氢气选择性还原实验研究
陈义胜1，田甜2
（内蒙古科技大学，材料与冶金工程学院，包头014010）
摘要：本实验在自制的底供气扩散床管式电阻炉内，研究了不同还原时间(30min- 180min)和温度(800℃-1050℃）下,H2选择性还原含铌铁矿粉中铁氧化物的规律。得到950℃为最佳还原温度，还原2h还原度达到90.98%，金属化率为86.47%，还原3h还原度达到94.07%，金属化率为91.11%，而低于这一温度或高于这一温度时，还原度和金属化率在同样还原时间下都有所降低。
关键字：含铌铁矿粉；H2选择性还原；还原度和金属化率
中图分类号：TF554 文献标识码：A
Experimental study on hydrogen selective-reduction of Nb-bearing iron ore powder
CHEN Yi-sheng, TIANTian
(Materials and Metallurgy School, Inner Mongolia University of Science and Technology, , Baotou 014010)
Abstract: The rule of hydrogen selective-reduction of Nb-bearing iron ore powder was studied through experiments in the homemade diffusion bed tubular resistance furnace with gas blown from the bottom under the different reduction time (30min-180min) and temperature (800℃-1050℃). The result shows 950℃as the best reduction temperature，at which the reduction degree can reach 90.98% and the metal rate can reach 86.47% after being reduced for 2h; the reduction degree can reach 94.07%, and the metal rate can reach 91.11% after being reduced for 3h. While below or above this temperature, both the reduction degree and metal rate were decreased under the same reduction time.
Key words:Nb-bearing iron ore powder ,H2selective reduction , the reduction degree and the metal rate