Experimental Study on Hydrogen Selective-Reduction of Niobium Containing Iron Ore Powder

Abstract:

An experimental study on hydrogen selective-reduction of niobium containing iron ore powder is discussed in this paper. It was used for this study that a homemade diffusion bed tubular resistance furnace which gas was blown from the bottom. Experimental results are reported on that when reduction times reach 2h the best reduction temperature is 950°C and that the reduction degree which is niobium containing iron ore powder can reach 90.98% and the metallization rate which is niobium containing iron ore powder can reach 86.47%. And in the best reduction condition adding LiCL catalyst, it is found that adding LiCl catalyst can promote the reduction degree and the metallization rate improved significantly. Adding LiCL catalyst's proportion is changed from 0.43% to 2.14%, the experiment results show that when adding 0.71% LiCl catalyst the catalytic effect is better and the reduction degree can reach 95.82% and the metallization rate can reach 93.73%.

• Periodical: Advanced Materials Research (Volumes 941-944)
• Pages: 157-164
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.941-944.157
• Online since: June 2014
• Authors: Yi Sheng Chen, Tian Tian
• Keywords: Hydrogen Selective Reduction, LiCl Catalyst, Metallization Rate, Niobium Containing Ore Powder, Reduction Degree

References

[1] Xiulan Yu, Lu Jia. New Progress in Comprehensive Utilization of Tailings in Bao Steels Concentrator[J]. Multipurpose Utilization of Mineral Resources. 2007, 6: (3)32-34.

[2] Xia Ping, Xueya Li. Comprehensive Utilization of Tailing Resources[J]. Express Information of Mining Industry. 2006, 5: (5)10-12.

[3] Jiayuan Zhang, Fang Jue. Experiment Research on Smelting of Baotou Niobium ore[J]. Hunan Metallurgy. 2004, 2: (32)7-14.

[4] Zhu Jun, Chunhong Ma, Xiaofei Guo, Hongmin Zhu. Synthesis of Ultra-fine Niobium and Tantalum Powders by Hydrogen Reduction[J]. Chinese Journal of Rare Metals. 2007, 31(1): 53-56.

[5] Xiaojian Zuo, Jingsong Wang. Reduction Behaviors of Pellets under High Reduction Potential[J]. Iron Steel Vanadium Titanium. 2013, 34(2): 47-53.

[6] Chen Hong, Qiyong Han, Shoukun Wei, et al. A New Method on The Extraction of Nb From Nb- Bearing Iron Ore for Making Fe- Nb[J]. Iron and Steel. 1999, 34(3): 13-19.

DOI: 10.1002/srin.200200191

[7] Hezi Yinggu, Zhenfu Gushan. Use Gas Reduction of Nb in The Furnace Slag[J]. Science & Technology of Baotou Steel(Group) Corporation. 1989, (3): 75-82.

[8] R.E.A. Eatwell-Hall, V.N. Sharifi, J. Swithenbank. Hydrogen Production From Molten Metal Gasification[J]. International Journal of Hydrogen Energy, 2010, 35: 13168- 13178.

DOI: 10.1016/j.ijhydene.2010.09.003

[9] Fang Jue. Non-blast Furnace Ironmaking Process and Theory[M]. Metallurgical Industry Press, 2007: 22-26.

[10] Huang Xigu. Iron and Steel Metallurgy [M]. Metallurgical Industry Press, 2007: 284-287.

[11] Xingmin Guo, Hongfu Tang, Shenbi Zhang. Study on The Catalysis Mechanism of Li2CO3 For Reduction of Iron Ore Pellet With Carbon[J]. Acta Metallurgica Sinica, 2000, 36(6): 638-641.

[12] Xingmin Guo, Shengbi Zhang, Nianxin fu, et al. Effects of Cata1yst and Additive Containing Li, Na, or Ca on Reduction of lron Oxide/Carbon Composite Pellets[J]. J Univ Sci and Tech Beijing, 2001, 8(3): 181-185.

[13] Zhang Yi, Xingmin Guo, Hongfu Tang, et al. Effect of Catalysts and Additive Coniaining Li on the Reduetion of Hematite by Carbon Monoxide[J]. Journal of University of Science and Technology Beijing, 2002, 24(2): 194-196.