WANG Xian-zhen1,2, WANG Wei1,2, LI He-ping3, ZHANG Qi3, YANG Dai-wei1,2, LIN Guo1,2
1. State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China; 2. Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, Hubei, China; 3. Ironmaking Plant, Shanghai Meishan Iron and Steel Co., Ltd., Nanjing 210039, Jiangsu, China
Abstract：The distribution and morphology of ZnO have an important effect on the mineral phase, structure, and metallurgical properties of sinter. Therefore, quasi-equilibrium phase sinter experiments were performed under 1 300 ℃, pure N2 conditions using analytical reagents with different ratios of ZnO under laboratory conditions to study effect of different ZnO content on phase and structure of sinter. The result showed that the main mineral phases in sinter with ZnO are magnetite, silico-ferrite of calcium and aluminum (SFCA), silicate, and zinc ferrite. ZnO combined with Fe2O3 to form zinc ferrite,which was solid-dissolved with magnetite in the sinter. With the increase of ZnO, the content of zinc ferrite in the sinter mineral phase increased. The morphology of the SFCA phase changed gradually from block to strip and acicular or even finer network structure, and its distribution changed from scattered to concentrated when the mass percent of ZnO increased from 0 to 4% in sinter. The addition of ZnO to the sinter promoted the formation of its liquid phase, which had an impact on pore structure and porosity. The micropores decreased and the number of large pores increased with the increase of ZnO content, the shape of large pores was regular.As the mass percent of ZnO increased from 0 to 1.6%, the total porosity of the sinter was not changed obviously, and its total porosity showed a gradual increase when the ZnO content continued to increase.
王宪珍, 王炜, 李和平, 张琦, 杨代伟, 林国. ZnO对烧结矿矿相和结构的影响[J]. 钢铁, 2021, 56(7): 31-37.
WANG Xian-zhen, WANG Wei, LI He-ping, ZHANG Qi, YANG Dai-wei, LIN Guo. Effect of ZnO on phase and structure of sinter[J]. Iron and Steel, 2021, 56(7): 31-37.
[1] LI Xin-yu,SU Bu-xin,XIA Lei-ge, et al. Effect of nickel on formation mechanisms of silico-ferrite of calcium and aluminum (SFCA)[J]. Journal of Iron and Steel Research, International, 2015, 22(6): 478. [2] YANG Dai-wei, WANG Wei, XU Run-sheng, et al.Effect of SiO2 on the mechanical property and reduction of calcium ferrite[J]. Metals, 2018, 9 (2): 152. [3] 林勇. 高炉粉尘再资源化应用基础研究[J]. 冶金与材料, 2017(6): 21.(LIN Yong. Basic research on the application of blast furnace dust re-resource[J]. Metallurgy and Materials, 2017(6): 21.) [4] 谢明辉, 张伟, 李建军, 等. 鞍钢高炉锌负荷源头分析与控制[J].鞍钢技术,2019(1): 61.(XIE Ming-hui, ZHANG Wei, LI Jian-jun, et al. Analysis on origins of zinc burden in BF and control of the burden by ansteel[J]. Angang Technology,2019(1): 61.) [5] 曾丹林, 刘胜兰, 张崎, 等. 从高炉粉尘中回收锌的工艺现状[J].中国有色冶金,2014, 43(6): 57.(ZENG Dan-lin, LIU Sheng-lan, ZHANG Qi, et al. Process status of recovery of zinc from blast furnace dust[J]. China Nonferrous Metallurgy,2014, 43(6): 57.) [6] 朱斌, 周进东, 赵龚池, 等. 高炉内锌的赋存形式及对烧结矿性能的影响[J].钢铁, 2020, 55(8):136. (ZHU Bin, ZHOU Jin-dong, ZHAO Gong-chi, et al. Occurrence form of zinc in blast furnace and its influence on sinter performance[J]. Iron and Steel, 2020, 55(8):136.) [7] 张芳, 张世忠, 罗果萍, 等. 锌在包钢高炉中行为机制[J]. 钢铁, 2011, 46(8):7. (ZHANG Fang, ZHANG Shi-zhong, LUO Guo-ping, et al. Behaviors of zinc in blast furnace of Baotou iron and steel (group) Co[J]. Iron and Steel,2011, 46(8):7.) [8] 周飞, 彭其春, 陈本强, 等. 高炉内锌平衡与结瘤的分析[J].中国冶金,2010,20(2):15. (ZHOU Fei, PENG Qi-chun, CHEN Ben-qiang, et al. Analysis for zinc balance and scaffolding in blast furnace[J]. China Metallurgy, 2010,20(2):15.) [9] 王彩虹, 蒋心泰. 酒钢除尘灰性质分析及利用技术[J]. 中国冶金, 2019, 29(3):57. (WANG Cai-hong, JIANG Xin-tai. Property analysis and utilization technology of dust ash in Jiu steel[J]. China Metallurgy,2019, 29(3):57.) [10] 赵丽树, 吕庆. 高炉块状带炉料吸附锌的特点[J]. 钢铁, 2013, 48(2): 14.(ZHAO Li-shu, LÜ Qing. Adsorption characteristic of zinc in lump zone of BF[J]. Iron and Steel, 2013, 48(2): 14.) [11] 卢郑汀, 董瑞章, 仇友金,等. 昆钢2 500 m3高炉有害元素分析与控制[J]. 炼铁,2015, 34 (5): 37.(LU Zheng-ting, DONG Rui-zhang, QIU You-jin, et al. Analysis and control of harmful elements of 2 500 m3 BF in KunSteel[J]. Ironmaking, 2015, 34 (5): 37.) [12] ZHANG Fang, LI Rong, AN Sheng-li, et al. Thermodynamic behavior of zinc in blast furnace[J]. Metalurgia International,2013, 18(8): 14. [13] 王雪松, 付元坤, 李肇毅,等. 高炉锌平衡及含锌尘泥的回收利用[J].钢铁,2004,39(12): 67.(WANG Xue-song, FU Yuan-kun, LI Zhao-yi, et al. Calculating zinc balance and reutilizing dust slime with zinc in blast furnace[J]. Iron and Steel, 2004, 39(12): 67.) [14] 庞真丽,颜芳,王沧. 唐钢烧结碱金属和锌平衡的研究[J]. 南方金属,2012(2): 25.(PANG Zhen-li, YAN Fang, WANG Cang. An investigation of the alkali-zinc balance in the sintered ores at TangSteel[J]. Southern Metals, 2012(2): 25.) [15] 左静宇. 烧结矿中ZnO及碱金属含量的平衡分析及控制[J]. 河北冶金. 2013(5): 14. (ZUO Jing-yu. Balance analysis of contents of ZnO and base metal in sinter and its control[J]. Hebei Metallurgy,2013(5): 14.) [16] LÜ Wei, GAN Min, FAN Xiao-hui, et al. Recycling utilization of zinc-bearing metallurgical dust by reductive sintering: Reaction behavior of zinc oxide[J]. Recycling Methods for Industrial Metals and Minerals, 2019, 71(9): 3173. [17] 尹国亮. 含锌磁铁矿烧结性能及脱锌的研究[D]. 重庆:重庆大学, 2010.(YIN Guo-liang. Sintering Properties and Dezincification of Zinc-Containing Magnetite[D]. Chongqing:Chongqing University, 2010.) [18] REN Shan, ZHANG Jian-liang. Effect of TiO2on equilibrium phase sinter at oxygen partial pressure of 5×10-3atm[J]. Ironmaking and Steelmaking,2014, 41(2): 132. [19] REN Shan, ZHANG Jian-liang. Effect of B2O3on phase compositions of high Ti bearing titanomagnetite sinter[J]. Ironmaking and Steelmaking,2014, 41(7): 500. [20] LI Liao-sha, LIU Ji-bin, WU Xing-rong, et al. Influence of Al2O3 on equilibrium sinter phase in N2 atmosphere[J]. ISIJ International,2010, 50(2): 327. [21] WANG Wei, YANG Dai-wei, OUYANG Ze-lin, et al. Effect of SiO2 on the formation of acicular calcium ferrite in sinter[J]. Metallurgical and Materials Transactions B, 2019, (50): 678. [22] 黄希祜. 钢铁冶金原理[M]. 北京: 冶金工业出版社,2016.(HUANG Xi-hu. Principles of Iron and Steel Metallurgy[M]. Beijing: Metallurgical Industry Press, 2016.)
2021, Vol. 56 
