Experimental Study on Preparation of Oxidized Barun Iron Ore Pellets with Boron-Bearing Iron Concentrate Addition

doi:10.12068/j.issn.1005-3026.2015.01.012

Abstract

Abstract: Under laboratory conditions， experiments on the effect of boron-bearing iron concentrate on the preparation process and metallurgical properties of oxidized Barun iron ore pellets were carried out. The results show that， when the additional addition of boron-bearing iron concentrate is 5.0%， the oxidized iron ore pellets with 40% Barun iron ore content can meet the requirements of blast furnace smelting. Boron-bearing iron concentrate can increase the crushing strength of pellets and decrease the reduction swelling rate. With increasing the additional addition of boron-bearing iron concentrate from 0 to 7.5%， the crushing strength is raised from 2630 N to 3709N， the reduction swelling rate is decreased from 25.69% to 15.53%. When the additional addition of boron-bearing iron concentrate is 7.5%， the pellets roasting temperature can be decreased from 1200℃ to 1150℃， and the quality of the oxidized Barun iron ore pellets can still meet the requirements of blast furnace smelting.

Key words: iron ore concentrate with high alkalis load, Barun iron ore, boron-bearing iron concentrate, pellets, metallurgical properties

CLC Number:

TF046.6

FU Xiao-jiao， CHU Man-sheng. Experimental Study on Preparation of Oxidized Barun Iron Ore Pellets with Boron-Bearing Iron Concentrate Addition[J]. Journal of Northeastern University Natural Science, 2015, 36(1): 52-56.

References

[1]苏胜旺，唐绍义，赵德贵.白云鄂博西矿氧化矿选矿新工艺［J］.矿冶工程，2010，30(4):36-39.(Su Sheng-wang，Tang Shao-yi，Zhao De-gui.Novel techniques for mineral processing of oxide ore in Baiyunebo west mine［J］.Mining and Metallurgical Engineering，2010，30(4):36-39.)
[2]Frazer F W，Westenberger H，Boss K H，et al.Relationship between basicity and swelling on reduction of iron-ore pellets ［J］.International Journal of Mineral Processing，1975，2(4):353-365.
[3]张凯，杨兆祥.B₂O₃-MgO-SiO₂-CaO-Fe₃O₄系固结块的抗压强度和还原性［J］.东北大学学报:自然科学版，1997，18(6):589-592.(Zhang Kai，Yang Zhao-xiang.Compressive strength and reducibility of B₂O₃-MgO-SiO₂-CaO-Fe₃O₄ agglomerate［J］.Journal of Northeastern University:Natural Science，1997，18(6):589-592.)
[4]Volzone C，Cavalieri A L.Influence of smectites on magnetite pellet strengths［J］.Journal of Materials Science Letters，1996，15(17):1532-1535.
[5]Sharma T，Gupta R C，Prakash B.Effect of gangue content on swelling of behavior of iron ore pellets［J］.Minerals Engineering，1990，3(5):509-516.
[6]Osman S，Ali I A.The bonding/strengthening mechanism of colemanite added organic binders in iron ore pelletization［J］.International Journal of Mineral Processing，2012，110/111:90-100.
[7]Dwarapudi S，Ghosh T K，Shankar A，et al.Effect of pellet basicity and MgO content on the quality and microstructure of hematite pellets［J］.International Journal of Mineral Processing，2011，99(4):43-53.
[8]陈世强，储满生，柳政根，等.氧化球团使用硼镁复合添加剂的实验研究［C］ // 第七届中国钢铁年会论文集.北京:中国金属学会，2009:407-412.(Chen Shi-qiang，Chu Man-sheng，Liu Zheng-gen，et al.Experimental study on application of boron and magnesium additives to oxidized pellet［C］ // 2009 CSM Annual Meeting Proceedings.Beijing:Chinese Society of Metals，2009:407-412.)
[9]Sharma T，Gupta R C，Prakash B.Effect of the reduction rate on the swelling behaviour of iron ore pellets ［J］.ISIJ International，1992，32(7):812-818.
[10]Yu W，Zhu D Q，Chun T J，et al.Enhancing the pellization of Brazilian hematite by adding boron bearing additives［C］//The 2nd International Symposium on High-Temperature Metallurgical Processing.San Diego:American Iron and Steel Institute，2011:199-210.

[1]	ZHANG Xiao-hu， ZHANG Sheng， ZHAO Liang， DONG Hui. Numerical Analysis of Gas-Solid Heat Transfer Characteristics in Shaft Furnace for Calcination of Sintered Magnesia [J]. Journal of Northeastern University(Natural Science), 2022, 43(1): 40-47.
[2]	WANG Chang-jun， YU Yang， LI Bao-kuan， LIU Xue-lin. Simulation of Drying and Oxidation Process of Pellets Layers in Steel Belt Sintering [J]. Journal of Northeastern University(Natural Science), 2021, 42(9): 1282-1289.
[3]	ZHANG Sheng， ZHANG Xiao-hu， ZHAO Liang， DONG Hui. Experiment of Resistance Characteristics for Magnesite Pellets Packed Bed Based on Ergun Equation [J]. Journal of Northeastern University(Natural Science), 2021, 42(3): 347-352.
[4]	FU Da-xue， ZHANG Ting-an， DOU Zhi-he， GUAN Lu-kui. Heat Transfer in a Retort for Mg-Extraction by Pre-prepared Pellet Silicothermic Process [J]. Journal of Northeastern University Natural Science, 2018, 39(5): 643-648.
[5]	FU Da-xue， GUAN Lu-kui， DOU Zhi-he， ZHANG Ting-an. Study on Heat Transfer of Pre-prepared Pellets for Mg-Extraction by Silicothermic Process [J]. Journal of Northeastern University Natural Science, 2017, 38(9): 1274-1279.
[6]	WEN Ming， ZHANG Ting-an， DOU Zhi-he. Experimental Study on Pelletizing Process of Prepared Pellets for Silicothermic Magnesium Production [J]. Journal of Northeastern University Natural Science, 2016, 37(7): 960-963.
[7]	CHU Man-sheng， ZHAO Jia-qi， FU Xiao-jiao， LIU Zheng-gen. New Efficient Process Utilizing Ludwigite on Gas-based Shaft Furnace Direct Reduction and Electric Furnace Smelting Separation [J]. Journal of Northeastern University Natural Science, 2016, 37(6): 805-809.
[8]	ZHENG Chang-le， SHAO Qiu-jun， ZHANG Jian-liang， WANG Guang-wei. Influence of Oxygen Enrichment Rate on Reduction Behavior of Titanomagnetite Pellets [J]. Journal of Northeastern University Natural Science, 2016, 37(2): 198-203.
[9]	JIANG Xin， WANG Lin， LIU Ming-xu， SHEN Feng-man. Effects of Reducing Time on Metallization Degree of Carbothermic Reduction of Tall Pellets Bed [J]. Journal of Northeastern University Natural Science, 2016, 37(12): 1720-1725.
[10]	CHU Man-sheng， FENG Cong， TANG Jue， LIU Zheng-gen. Study on Blast Furnace Slag System of Vanadium-Titanium Magnetite Under Neutral Atmosphere [J]. Journal of Northeastern University:Natural Science, 2015, 36(9): 1283-1287.
[11]	FU Xiao-jiao， ZHAO Jia-qi， CHEN Shuang-yin， CHU Man-sheng. Application of Boron-bearing Iron Concentrate to Optimizing Sintering Quality of High Chromium Vanadium-Titanium Magnetite Ore [J]. Journal of Northeastern University Natural Science, 2015, 36(8): 1115-1119.
[12]	GAO Peng， YU Jian-wen， HAN Yue-xin， ZHOU Man-geng. Mineralogical Study of Boron-Bearing Iron Concentrate Ore [J]. Journal of Northeastern University Natural Science, 2015, 36(4): 581-584.
[13]	SUN Yu， DONG Yue， ZHENG Hai-yan， SHEN Feng-man. Experimental Study on Direction Reduction of Vanadium-Bearing Titanomagnetite [J]. Journal of Northeastern University Natural Science, 2015, 36(1): 63-67.
[14]	TANG Jue， ZHANG Yong， CHU Mansheng， XUE Xiangxin. Preparation of Oxidized Pellets with High Chromium VanadiumTitanium Magnetite [J]. Journal of Northeastern University, 2013, 34(4): 545-549.
[15]	ZHANG Yuzhu， SHI Yan， HU Changqing， HAN Tao. Research on Pore Structure Characteristics of Carbonation Pellets with Ferrous Dust [J]. Journal of Northeastern University, 2013, 34(3): 388-391.