Magnesium pellets with different adding methodes of MgO
LI Jin-lian1, GONG Zuo-yan1, WANG Liang1, HAN Zi-wen1, WANG Xiao-qiang2, ZHANG Xiao-fang3
1. Institute of Iron and Steel, Angang Steel Company Limited, Anshan 114009, Liaoning, China; 2. Bayuquan Iron and Steel Subsidiary Company, Angang Steel Co. , Ltd. , Yingkou 115007, Liaoning, China; 3. School of Material and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China
Abstract：In order to obtain high quality magnesium pellets, with adding the new composite binder content of 0.7%, the effects of the MgO adding method (magnesite powder, light burning magnesium powder) on the ball-making process, oxidizing roasting and metallurgical properties of pellet were studied. The results showed that the property of the green ball and the ore grade of the pellet are obviously improved with adding the composite binder. w (TFe+MgO) in pellet is increased by 0.65%. When w(MgO)/w(SiO2) is from 0.14 to 0.24, the drop strength and the reduction of the pellets are improved with the addition of the magnesite powder. The effect of MgO addition on the compressive strength of the pellets is small. The reduction expansion rate of the pellets are reduced, and the low-temperature reduction index of pellets powder and melting dropping performance are improved with the addition of the magnesite powder and the light burning magnesium powder in pellets.
李金莲, 宫作岩, 王亮, 韩子文, 王小强, 张小芳. MgO添加方式对镁质球团矿的影响[J]. 钢铁, 2020, 55(8): 75-80.
LI Jin-lian, GONG Zuo-yan, WANG Liang, HAN Zi-wen, WANG Xiao-qiang, ZHANG Xiao-fang. Magnesium pellets with different adding methodes of MgO[J]. Iron and Steel, 2020, 55(8): 75-80.
[1] 宋招权. MgO对球团矿质量的影响[J]. 烧结球团, 2001, 26(6): 22.(SONG Zhao-quan.Influence of MgO content on the quality of product pellet[J]. Sintering and Pelletizing, 2001, 26(6): 22.) [2] 孙健宁, 刘小杰, 严照照, 等. 不同质量分数MgO对球团质量的影响[J]. 中国冶金, 2020, 30(2): 1. (SUN Jian-ning, LIU Xiao-jie, YAN Zhao-zhao, et al. Effect of different mass fractions of MgO on quality of pellet[J]. China Metallurgy, 2020, 30(2): 1.) [3] 周明顺,唐复平,赵东明,等. 球团配加镁质熔剂及新型皂土试验[J].钢铁, 2018, 53(4): 15. (ZHOU Ming-shun,TANG Fu-ping,ZHAO Dong-ming,et al. Investigation on MgO-flux and a new bentonite in pellets production[J]. Iron and Steel, 2018, 53(4): 15.) [4] 吕志义,陈革,马利,等.不同碱度及含氧化镁球团矿实验研究 [J]. 包钢科技, 2003, 29(40): 1.(LÜ Zhi-yi,CHEN Ge,MA Li,et al. Experimental study on different basicity and different magnesia pellet[J].Science and Technology of BaoTou Steel (Group) Corporation, 2003, 29(40): 1.) [5] 张国成,罗果萍,邬虎林,等. 配加蒙古精矿对球团矿性能的影响[J]. 中国冶金, 2019, 29(11): 24. (ZHANG Guo-cheng,LUO Guo-ping,WU Hu-lin,et al. Effects of adding Mongolian concentrate on pellets properties[J]. China Metallurgy, 2019, 29(11): 24.) [6] 陈铁军, 张一敏, 王昌安,等. 镁橄榄石在铁矿球团中的应用试验研究[J]. 烧结球团, 2005, 30(2): 5.(CHEN Tie-jun,ZHANG Yi-min,WANG Chang-an,et al.Experimental study on application of forsterite iron ore pelletization[J].Sintering and Pelletizing, 2005, 30(2): 5.) [7] 范晓慧, 谢路奔, 甘敏,等. 高镁球团焙烧特性及其固结强化机理[J]. 中南大学学报:自然科学版, 2013, 44(2): 449.(FAN Xiao-hui,XIE Lu-ben,GAN Min,et al. Roasting characteristics of magnesium pellets and mechanism of strengthening concretion[J].Journal of Central South University:Nature Science, 2013, 44(2):449.) [8] 高强健, 魏国, 姜鑫,等. 轻烧菱镁石对生球爆裂温度的影响[J]. 东北大学学报:自然科学版, 2013, 34(4): 542.(GAO Qiang-jian,WEI Guo,JIANG Xin,et al. [J].Journal of Northeastern University:Natural Science,2013, 34(4): 542.) [9] 刘庆华. 球团矿加镁的试验研究[J]. 矿业工程, 2014, 12(1): 31.(LIU Qing-hua. Study on adding MgO in the pellet[J].Mining Engineering, 2014, 12(1): 31.) [10] 青格勒, 吴铿, 刘洪松,等. 焙烧温度对低硅含镁球团矿还原膨胀率的影响及机理[J]. 中国有色金属学报, 2015, 25(10): 2901.(QING Ge-le,WU Keng, LIU Hong-song, et al. Effect and mechanism of calcination temperature on reduction swelling rate of low silica magnesium pellets[J].The Chinese Journal of Nonferrous Metals, 2015, 25(10): 2901.) [11] 刘杰,赵东明,李建军,等. 鞍钢高炉低镁渣冶炼技术研究与应用[J].钢铁 , 2018, 53(3): 22.( LIU Jie,ZHAO Dong-ming,LI Jian-jun,et al. Research and application of blast furnace's low w(MgO) slag in Ansteel[J]. Iron and Steel, 2018, 53(3): 22.) [12] 青格勒, 吴铿, 屈俊杰,等. 不同含镁添加剂对球团矿工艺参数及质量的影响[J]. 钢铁, 2013, 48(7): 17.(QING Ge-le,WU Keng, OU Jun-jie, et al. Effect of different magnesium additives on process parameters and pellet quality[J]. Iron and Steel,2013, 48(7): 17.) [13] 周国凡, 杨福. 添加MgO对球团矿成球性能及强度的影响 [J]. 钢铁研究, 2009, 37(2):10.(ZHOU Guo-fan,YANG Fu.Effects of adding MgO on pelletizing ability and strength of pellet[J]. Research on Iron and Steel, 2009, 37(2):10.) [14] 侯恩俭, 王斌, 马文,等. 鞍钢球团矿添加镁质复合粘结剂的研究 [J]. 鞍钢技术, 2009, 37(2): 10.(HOU En-jian,WANG Bin, MA Wen, et al.Study on pellet with adding magnesite composite binder in Ansteel[J]. Angang Technology, 2009, 37(2):10.) [15] 李金莲, 刘万山, 任伟,等. 配加高铁赤泥降低球团矿膨润土用量的研究[J]. 烧结球团, 2012, 37(3): 31. (LI Jin-lian,LIU Wan-shan,REN Wei, et al.Experiment study on decreasing bentonite consumption of pellets by adding high iron red mud[J]. Sintering and Pelletizing, 2012, 37(3): 31.) [16] 李慧敏. 含硼复合添加剂强化巴西赤铁矿球团制备及机理研究[D]. 长沙: 中南工业大学, 2009.(LI Hui-min. Study on the Process and Mechanism of Improving the Pelletizationof Brazilian Hematite by Boron Bearing Compound Additives [D].Changsha:Central South University, 2009.) [17] 李艳茹, 李金莲, 任伟. 高效镁质添加剂用于铁矿球团的试验研究 [J]. 钢铁, 2010, 5(10): 23.(LI Yan-ru,LI Jin-lian, REN-Wei,et al.Experimental study on the iron ore pellet using high-efficient additive containing MgO[J]. Iron and Steel, 2010, 5(10): 23.) [18] 任伟, 杨熙鹏, 孙俊波,等. 富镁膨润土用于铁矿球团的试验研究[C]//全国炼铁生产技术会暨炼铁学术年会.郑州:[出版者不详],2014: 436.(REN-Wei,YANG Xi-peng,SUN Jun-bo,et al.An experimental study of mgoriched bentonite for iron ore pellet[C]//National Annual Meeting Ironmaking Technolgy Association. Zhengzhou:[s.n.],2014: 436.) [19] 廖飞. 镁质复合粘结剂用于球团矿研究[D]. 鞍山: 辽宁科技大学, 2015.(LIAO Fei. Magnesia Composite Binders for Pellet Research[D].Anshan:University of Science and Technology Liaoning, 2015.)
2020, Vol. 55 
