Experimental Study on the Effects of Iron Ore Powder Pre-reduction Conditions on Final Reduction in a Fluidized Bed
CHEN Hong-sheng ZHENG Zhong ZHANG Yu-tao ZOU Sheng-wei
College of Materials Science and Engineering, Chongqing University College of Materials Science and Engineering, Chongqing University College of Materials Science and Engineering, Chongqing University College of Materials Science and Engineering, Chongqing University
Abstract：Behavior of pre-reduction and final reduction of iron ore powder was investigated in a quartz fluidized bed reactor, and the effects of temperature and residence time of pre-reduction on the final reduction process were analyzed. Surface morphological properties of pre-reduction and final reduction products were observed and the effects of pre-reduction conditions on the final reduction were analyzed. The results indicate that temperature significantly influences the reduction rate and product structure. Pre-reduction degree increases with pre-reduction temperature, while there is some fluctuation in final reduction degree. Under the optimal pre-reduction temperature of 973 K, the final reduction degree is up to 80.4%. In addition, decrease of pre-reduction time is partly in favor of increase of the final reduction degree, but not for pre-reduction under certain conditions.
陈红生 郑忠 张宇涛 邹胜伟. 流化床中铁矿粉预还原条件对终还原影响的实验研究[J]. , 2013, 13(6): 980-985.
CHEN Hong-sheng ZHENG Zhong ZHANG Yu-tao ZOU Sheng-wei. Experimental Study on the Effects of Iron Ore Powder Pre-reduction Conditions on Final Reduction in a Fluidized Bed. , 2013, 13(6): 980-985.
2013, Vol. 13 
