Change of phase composition and valuable elements in V-Ti pellet during softening-melting and dripping process

Xie Hong’en; Zheng Kui; Huang Chu; Zhu Fengxiang; Liu Juan

doi:10.7513/j.issn.1004-7638.2024.04.015

Volume 45 Issue 4

Aug. 2024

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Xie Hong’en, Zheng Kui, Huang Chu, Zhu Fengxiang, Liu Juan. Change of phase composition and valuable elements in V-Ti pellet during softening-melting and dripping process[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(4): 105-112, 128. doi: 10.7513/j.issn.1004-7638.2024.04.015

Citation:

Xie Hong’en, Zheng Kui, Huang Chu, Zhu Fengxiang, Liu Juan. Change of phase composition and valuable elements in V-Ti pellet during softening-melting and dripping process[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(4): 105-112, 128. doi: 10.7513/j.issn.1004-7638.2024.04.015

Citation:

Xie Hong’en, Zheng Kui, Huang Chu, Zhu Fengxiang, Liu Juan. Change of phase composition and valuable elements in V-Ti pellet during softening-melting and dripping process[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(4): 105-112, 128. doi: 10.7513/j.issn.1004-7638.2024.04.015

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Change of phase composition and valuable elements in V-Ti pellet during softening-melting and dripping process

doi: 10.7513/j.issn.1004-7638.2024.04.015

Xie Hong’en^{1, 2
,},
Zheng Kui^{1, 2},
Huang Chu³,
Zhu Fengxiang^{1, 2},
Liu Juan^{1, 2}

1.
Pangang Group Research Institute Co., Ltd., Panzhihua 617000, Sichuan, China
2.
State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Panzhihua 617000, Sichuan, China
3.
Xichang Steel and Vanadium Co., Ltd., Pangang Group, Xichang 615000, Sichuan, China

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Received Date: 2023-05-30
Publish Date: 2024-08-30

Abstract

Abstract

The change of phase composition and valuable elements in the process of softening-melting and dripping of acidic V-Ti pellet of Pangang were quantitatively studied by simulating the smelting atmosphere in blast furnace. The results show that Ti and V gradually migrated from titanohematite and ilmenite to slag phase during the softening-melting and dripping process of V-Ti pellet. TiO₂ could not only be reduced to Ti into metal iron, but also generate a large amount of titanium carbonitride. In the dripping test, the yield of V in metallic iron was 36.03%, which was much higher than 3.13% of Ti and 17.20% of Si. The absorbing S from coke by slag and metallic iron and the desulfurization reaction between them were carried out simultaneously, and the ratio of S in metallic iron decreased from 72.84% after softening-melting test to 50% after dripping test. Pyroxene and anosovite were more than 80% in the flooding slag of softening-melting test, and more than 70% of V and Ti in this slag were distributed in anosovite. While in residual slag of softening-melting test, pyroxene decreased obviously, olivine and spinel increased obviously, and V and Ti increased obviously in spinel. During the dripping test, TiO₂ was gradually reduced until the sum of TiC and TiN mass fraction exceeded 20%, so the slag was gradually transformed from high titanium-type slag with TiO₂ mass fraction over 30% to low titanium-type slag with TiO₂ mass fraction less than 10%, and anosovie and its V and Ti in the residual slag were significantly reduced, while olivine and its distribution of V and Ti were increased.
- blast furnace,
- V-Ti pellet,
- softening-smelting and dripping,
- phase composition,
- valuable element,
- titanium carbonitride

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References(26)

References

[1]	Yang Gangqing, Yang Wenkang, Li Xiaosong, et al. Comparative study of microstructure changes in vanadium titanium sinter and ordinary sinter during reduction process[J]. Iron Steel Vanadium Titanium, 2018,39(2):102-109. (杨广庆, 杨文康, 李小松, 等. 钒钛烧结矿与普通烧结矿还原过程中微观结构变化对比研究[J]. 钢铁钒钛, 2018,39(2):102-109. Yang Gangqin, Yang Wenkang, Li Xiaosong, et al. Comparative study of microstructure changes in vanadium titanium sinter and ordinary sinter during Reduction Process[J]. Iron Steel Vanadium Titanium, 2018, 39(2): 102-109
[2]	Gan Qin, He Qun, Wen Yongcai. Study on influence of MgO on mineral composition and metallurgical properties of V-bearing titaniferous magnetite sinter[J]. Iron and Steel, 2008,43(8):7-11. (甘勤, 何群, 文永才. MgO对钒钛烧结矿矿物组成及冶金性能影响的研究[J]. 钢铁, 2008,43(8):7-11. Gan Qin, He Qun, Wen Yongcai. Study on influence of MgO on mineral composition and metallurgical properties of V-bearing titaniferous magnetite sinter[J]. Iron and Steel, 2008, 43(8): 7-11
[3]	Bai Dongdong, Han Xiuli, Li Changcun, et al. Influence of mineral structure of vanadium-titanium sinter on its metallurgical properties[J]. Iron Steel Vanadium Titanium, 2018,39(5):111-115. (白冬冬, 韩秀丽, 李昌存, 等. 钒钛烧结矿矿相结构对其冶金性能的影响[J]. 钢铁钒钛, 2018,39(5):111-115. Bai Dongdong, Han Xiuli, Li Changcun, et al. Influence of mineral structure of vanadium-titanium sinter on its metallurgical properties[J]. Iron Steel Vanadium Titanium, 2018, 39(5): 111-115
[4]	王强. 钒钛磁铁精矿烧结物性及其强化技术的研究[D]. 长沙: 中南大学, 2012. Wang Qiang. Research on sintering characteristics of vavadium-tianium magnetite concentrate and strengthening technologies[D]. Changsha: Central South University, 2012.
[5]	Zhang Jianliang, Yang Guangqing, Guo Hongwei, et al. Microstructure change of V-Ti magnetite concentrate pellets during reduction[J]. Journal of University of Science and Technology Beijing, 2013,35(1):42-48. (张建良, 杨广庆, 国宏伟, 等. 含钒钛铁矿球团还原过程中微观结构变化[J]. 北京科技大学学报, 2013,35(1):42-48. Zhang Jianliang, Yang Guangqin, Guo Hongwei, et al. Microstructure change of V-Ti magnetite concentrate pellets during reduction[J]. Journal of University of Science and technology Beijing, 2013, 35(1): 42-48
[6]	Zhan Xing. Anatomical study on smelting vanadium-bearing titanomagnetite in small blast furnace[J]. Iron Steel Vanadium Titanium, 1984,5(2):3-15. (詹星. 小高炉冶炼钒钛磁铁矿解剖研究[J]. 钢铁钒钛, 1984,5(2):3-15. Zhan Xin. Anatomical study on smelting vanadium-bearing titanomagnetite in small blast furnace[J]. Iron Steel Vanadium Titanium, 1984, 5(2): 3-15
[7]	Song Guocai, Yuan Tianyu, Chen Xiaowu. Study on phase composition of the cohesive dripping zone in BF during smelting V-bearing titaniferrous maganetite sinter[J]. Iron Steel Vanadium Titanium, 1996,17(2):25-27. (宋国才, 苑天宇, 陈小武. 高炉冶炼钒钛烧结矿软熔滴落带物相组成研究[J]. 钢铁钒钛, 1996,17(2):25-27. Song Guocai, Yuan Tianyu, Chen Xiaowu. Study on phase composition of the cohesive dripping zone in BF during smelting V-bearing titaniferrous maganetite sinter[J]. Iron Steel Vanadium Titanium, 1996, 17(2): 25-27
[8]	Diao Risheng. Difference in behaviors of V-Ti bearing and common iron ores within blast furnace[J]. Iron and Steel, 1996,31(2):12-16, 38. (刁日陞. 钒钛矿与普通矿在高炉各带行为差异的研究[J]. 钢铁, 1996,31(2):12-16, 38. Diao Risheng. Difference in behaviors of V-Ti bearing and common iron ores within blast furnace[J]. Iron and Steel, 1996, 31(2): 12-16, 38
[9]	Bao Yicheng, Jia Xueqing, Song Guocai. Simulation study on reduction process of softening-melting and dripping zone in blast furnace smelting for vanadium-titanium sinter[J]. Iron Steel Vanadium Titanium, 1993,14(2):1-11. (包毅成, 贾学庆, 宋国才. 钒钛烧结矿高炉冶炼软熔滴落带还原过程模拟研究[J]. 钢铁钒钛, 1993,14(2):1-11. Bao Yicheng. Jia Xueqin, Song Guocai. Simulation study on reduction process of softening-melting and dripping zone in blast furnace smelting for vanadium-titanium sinter[J]. Iron Steel Vanadium Titanium, 1993, 14(2): 1−11
[10]	程功金. 块状带高铬型钒钛磁铁矿还原动力学及有价组元迁移行为的研究[D]. 沈阳: 东北大学, 2013. Cheng Gongjin. Study on kinetics of high chromia vanadium-titanium magnetite reduction and migration behavior of valuable elements in lumpy zone[D]. Shenyang: Northeatern University, 2013.
[11]	刘建兴. 软熔滴落带高铬型钒钛磁铁矿有价组元迁移机理[D]. 沈阳: 东北大学, 2013. Liu Jianxing. The migration mechanism of valuable components for high chromia vanadium-titanium magnetite in cohesive zone[D]. Shenyang: Northeatern University, 2013.
[12]	Wang Hongtao, Zhao Wei, Chu Mansheng, et al. Effect and function mechanism of sinter basicity on softening-melting behaviors of mixed burden made from chromium-bearing vanadium-titanium magnetite[J]. Journal of Central South University, 2017,24:39.
[13]	Liu Songli, Bai Chenguang, Hu Tu, et al. Quick and direct reduction process of vanadium and titanium ore concentrate with carbon-containing pellets at high temperature[J]. Journal of Chongqing University, 2011,34(1):60-65. (刘松利, 白晨光, 胡途, 等. 钒钛铁精矿内配碳球团高温快速直接还原历程[J]. 重庆大学学报, 2011,34(1):60-65. Liu Songli, Bai Chenguang, Hu Tu, et al. Quick and direct reduction process of vanadium and titanium ore concentrate with carbon-containing pellets at high temperature[J]. Journal of Chongqing University, 34(1): 60-65.
[14]	Chen Shuangyin, Tang Yu, Chu Mansheng, et al. Reduction process of vanadium titano-magnetite with coal powder[J]. The Chinese Journal of Process Engineering, 2013,13(2):236-240. (陈双印, 唐钰, 储满生, 等. 钒钛磁铁矿的煤粉还原过程[J]. 过程工程学报, 2013,13(2):236-240. Chen Shuangyin, Tang Jue, Chu Mansheng, et al. Reduction process of vanadium titano-magnetite with coal powder[J]. The Chinese Journal of Process Engineering, 2013, 13(2): 236-240
[15]	Xie Hongen, Hu Peng, Zheng Kui, et al. Study on phase and chemical composition of V-Ti sinter during softening, melting and dripping process[J]. Iron Steel Vanadium Titanium, 2022,43(2):107-117. (谢洪恩, 胡鹏, 郑魁, 等. 钒钛烧结矿软熔滴落过程中的物相组成及化学成分变化规律研究[J]. 钢铁钒钛, 2022,43(2):107-117. Xie Hongen, Hu Peng, Zheng Kui, et al. Study on phase and chemical composition of V-Ti sinter during softening, melting and dripping process[J]. Iron Steel Vanadium Titanium, 2022, 43(2): 107-117
[16]	Wang Dongsheng. Experimental study of Fe removal from TiC-containing slag[J]. Iron Steel Vanadium Titanium, 2020,41(4):87-91. (王东生. 含TiC炉渣除铁试验研究[J]. 钢铁钒钛, 2020,41(4):87-91. Wang Dongsheng. Experimental study of Fe removal from TiC-containing slag[J]. Iron Steel Vanadium Titanium, 2020, 41(4): 87-91
[17]	Wang Cui, Jiao Kexin, Zhang Jianliang, et al. Characterization of Ti(C, N) superstructure derived from hot metal[J]. ISIJ International, 2021,61(1):138.
[18]	Jiang Tinfang, Zhao Lang, Luo Xiangyu, et al. Study on separation of titanium and slag during carbonization of titanium-bearing blast furnace slag[J]. Iron Steel Vanadium Titanium, 2021,42(6):51-58. (简廷芳, 赵朗, 罗翔宇, 等. 含钛高炉渣碳化过程钛-渣分离研究[J]. 钢铁钒钛, 2021,42(6):51-58. Jiang Tinfang, Zhao Lang, Luo Xianyu, et al. Study on separation of titanium and slag during carbonization of titanium-bearing blast furnace slag[J]. Iron Steel Vanadium Titanium, 2021, 42(6): 51-58
[19]	Tian Ye, Chen Shujun, Sun Yanqin, et al. Settlement process of iron in titania bearing blast furnace slag[J]. Iron Steel Vanadium Titanium, 2016,37(3):91-97. (田野, 陈树军, 孙艳芹, 等. 含钛高炉渣中铁沉降行为研究[J]. 钢铁钒钛, 2016,37(3):91-97. Tian Ye, Chen Shujun, Sun Yanqin, et al. Settlement process of iron in titania bearing blast furnace slag[J]. Iron Steel Vanadium Titanium, 2016, 37(3): 91-97
[20]	马世伟. 高钛型高炉渣泡沫化机理的研究[D]. 重庆: 重庆大学, 2013. Ma Shiwei. Research on the mechanism of foaming for the blast furnace slag bearing high titania[D]. Chongqing: Chongqing University, 2013.
[21]	黄希祜. 钢铁冶金原理[M]. 北京: 冶金工业出版社, 2013. Huang Xihu. Principles of iron and steel metallurgy[M]. Beijing: Metallurgical Industry Press, 2013.
[22]	王筱留. 钢铁冶金学(炼铁部分)[M]. 北京: 冶金工业出版社, 2018. Wang Xiaoliu. Iron and steel metallurgy (ironmaking)[M]. Beijing: Metallurgical Industry Press, 2018.
[23]	Donald R Askeland, Pradeep P Phulé. 材料科学与工程基础(影印本)[M]. 北京: 清华大学出版社, 2015. Donald R Askeland, Pradeep P Phulé. Essentials of materials science and engineering[M]. Beijing: Tsinghua University Press, 2015.
[24]	杜鹤桂. 高炉冶炼钒钛磁铁矿原理[M]. 北京: 科学出版社, 1996. Du Hegui. Principle of smelting vanadium-bearing titanomagnetite in blast furnace[M]. Beijing: Science Press, 1996.
[25]	Hu Qingqing, Ma Donglai, Zhou Kai, et al. Phase transformation and slag evolution of vanadium-titanium magnetite pellets during softening-melting process[J]. Powder Technology, 2022,(396):710-717.
[26]	Tang Wendong, Yang Songtao, Xue Xiangxin. Effect of titanium on the smelting process of chromium-bearing vanadium titanomagnetite pellets[J]. JOM, 2021,73(5):1362-1370.