Isothermal reduction kinetics and mineral phase of chromium-bearing vanadium-titanium sinter reduced with CO gas at 873-1273 K

Song-tao Yang; Mi Zhou; Tao Jiang; Xiang-xin Xue

doi:10.1007/s12613-018-1557-z

Volume 25 Issue 2

Feb. 2018

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文章导航 > 矿物冶金与材料学报（英文版） > 2018 > 25(2) : 145-152. > DOI: 10.1007/s12613-018-1557-z

Cite this article as:

Song-tao Yang, Mi Zhou, Tao Jiang, and Xiang-xin Xue, Isothermal reduction kinetics and mineral phase of chromium-bearing vanadium-titanium sinter reduced with CO gas at 873-1273 K, Int. J. Miner. Metall. Mater., 25(2018), No. 2, pp.145-152. https://dx.doi.org/10.1007/s12613-018-1557-z

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研究论文

Isothermal reduction kinetics and mineral phase of chromium-bearing vanadium-titanium sinter reduced with CO gas at 873-1273 K

Song-tao Yang^1,2,3),
Mi Zhou^1,3),
Tao Jiang^1,3),
Xiang-xin Xue^1,3), ,

School of Metallurgy, Northeastern University, Shenyang 110819, China
School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, China
Key Laboratory of Liaoning Province for Recycling Science of Metallurgical Resources, Shenyang 110819, China

基金项目:

This work was financially supported by the National Natural Science Foundation of China (Nos. 51604065 and 51674084), the Fundamental Funds for the Central Universities (Nos. 150203003 and 150202001), the Natural Science Foundation of Liaoning Province (20170540316), the China Postdoctoral Science Foundation (2017M611246), and the NEU Postdoctoral Science Foundation (No. 20160304).

通信作者:
Xiang-xin Xue E-mail: xuexx@mail.neu.edu.cn

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中文摘要

Reduction of chromium-bearing vanadium-titanium sinter (CVTS) was studied under simulated conditions of a blast furnace, and thermodynamics and kinetics were theoretically analyzed. Reduction kinetics of CVTS at different temperatures was evaluated using a shrinking unreacted core model. The microstructure, mineral phase, and variation of the sinter during reduction were observed by X-ray diffraction, scanning electron microscopy, and metallographic microscopy. Results indicate that porosity of CVTS increased with temperature. Meanwhile, the reduction degree of the sinter improved with the reduction rate. Reduction of the sinter was controlled by a chemical reaction at the initial stage and inner diffusion at the final stage. Activation energies measured 29.22-99.69 kJ/mol. Phase transformations in CVTS reduction are as follows:Fe₂O₃→Fe₃O₄→FeO→Fe; Fe₂TiO₅→Fe₂TiO₄→FeTiO₃; FeO·V₂O₃→V₂O₃; FeO·Cr₂O₃→Cr₂O₃.

关键词:

sinter ;
kinetics ;
reduction ;
mineral phase

Research Article

Isothermal reduction kinetics and mineral phase of chromium-bearing vanadium-titanium sinter reduced with CO gas at 873-1273 K

Song-tao Yang^1,2,3),
Mi Zhou^1,3),
Tao Jiang^1,3),
Xiang-xin Xue^1,3), ,

Author Affilications

School of Metallurgy, Northeastern University, Shenyang 110819, China
School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, China
Key Laboratory of Liaoning Province for Recycling Science of Metallurgical Resources, Shenyang 110819, China

Funds:
This work was financially supported by the National Natural Science Foundation of China (Nos. 51604065 and 51674084), the Fundamental Funds for the Central Universities (Nos. 150203003 and 150202001), the Natural Science Foundation of Liaoning Province (20170540316), the China Postdoctoral Science Foundation (2017M611246), and the NEU Postdoctoral Science Foundation (No. 20160304).
Received: 06 April 2017; Revised: 19 August 2017; Accepted: 27 September 2017;

Abstract:

Keywords:

sinter ;
kinetics ;
reduction ;
mineral phase

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参考文献(23)

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施引文献

Citing articles(14)

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2.	Ying Li, Jie Ren, Han Wei, et al. Reduction Kinetics of Cold‐Bonded Briquette Prepared from Return Fines of Sinter with Carbon Monoxide and Coke. steel research international, 2023, 94(8) 必应学术
3.	Yue Shi, Zhengqi Guo, Deqing Zhu, et al. Isothermal reduction kinetics and microstructure evolution of various vanadium titanomagnetite pellets in direct reduction. Journal of Alloys and Compounds, 2023, 953: 170126. 必应学术
4.	Ying Li, Yonggang Zang, Yuandong Xiong, et al. Effect of Briquetting Pressure on the Properties, Reduction Behavior, and Reduction Kinetics of Cold-Bonded Briquette Prepared From Return Fines of Sinter. Metallurgical and Materials Transactions B, 2023, 54(1): 355. 必应学术
5.	Wenbo Zhou, Tingle Li, Dong Lan, et al. Influence of TiO2, Al2O3, and Basicity on Viscosity and Structure of High Titanium-Bearing Blast Furnace Slag. Materials, 2023, 16(7): 2575. 必应学术
6.	Jiahao Xi, Xiangdong Xing, Zhaoying Zheng, et al. Effect of Feature Selection on the Prediction Model of FeO Content in Sinter. JOM, 2023, 75(12): 5930. 必应学术
7.	Gongjin Cheng, Xuefei Zhang, Zixian Gao, et al. Isothermal reduction behavior and kinetics of Russian high-chromium vanadium-titanium magnetite pellets under gas atmospheres of CO–CO2–N2 and CO–N2 at 873 K–1173 K. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2022, 44(2): 5490. 必应学术
8.	Jiahao Li, Jingwei Men, Songtao Yang, et al. Influence of Fuel Level on Properties, Productivity, and Mineralogy of Russian Vanadiferous Titanomagnetite Sinter. Materials, 2021, 14(21): 6258. 必应学术
9.	Guo Chen, Yeqing Ling, Qiannan Li, et al. Investigation on microwave carbothermal reduction behavior of low-grade pyrolusite. Journal of Materials Research and Technology, 2020, 9(4): 7862. 必应学术
10.	Xiao-hui Li, Jue Kou, Ti-chang Sun, et al. Formation of calcium titanate in the carbothermic reduction of vanadium titanomagnetite concentrate by adding CaCO3. International Journal of Minerals, Metallurgy and Materials, 2020, 27(6): 745. 必应学术
11.	Wen Yu, Xiaojin Wen, Jiangan Chen, et al. Effect of Sodium Borate on the Preparation of TiN from Titanomagnetite Concentrates by Carbothermic Reduction–Magnetic Separation and Acid Leaching Process. Minerals, 2019, 9(11): 675. 必应学术
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Yue Shi, Zhengqi Guo, Deqing Zhu, et al. Isothermal reduction kinetics and microstructure evolution of various vanadium titanomagnetite pellets in direct reduction. Journal of Alloys and Compounds, 2023, 953: 170126. 必应学术
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Guo Chen, Yeqing Ling, Qiannan Li, et al. Investigation on microwave carbothermal reduction behavior of low-grade pyrolusite. Journal of Materials Research and Technology, 2020, 9(4): 7862. 必应学术
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Wei-dong Tang, Song-tao Yang, Li-heng Zhang, et al. Effects of basicity and temperature on mineralogy and reduction behaviors of high-chromium vanadium-titanium magnetite sinters. Journal of Central South University, 2019, 26(1): 132. 必应学术
Chengyi Ding, Xuewei Lv, Yun Chen, et al. Reaction sequence and formation kinetics of perovskite by calcium ferrite–titania reaction. Journal of Alloys and Compounds, 2019, 789: 537. 必应学术
Wei Dong Tang, Song Tao Yang, Xiang Xin Xue. Effect of V<sub>2</sub>O<sub>5</sub> Addition on Oxidation Induration and Swelling Behavior of Chromium-Bearing Vanadium Titanomagnetite Pellets with Simulated Coke Oven Gas Injection into Blast Furnace. ISIJ International, 2019, 59(6): 988. 必应学术

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