Effect of V<sub>2</sub>O<sub>5</sub> on Consolidation, Reduction, and Softening-Melting Behavior of High-Cr Vanadium Titanomagnetite
Vanadium titanomagnetite is an important mineral resource. It is a raw material for ironmaking, vanadium extraction, strategic metal titanium production, and titanium dioxide production. In this study, high chromium vanadium titanomagnetite (High-Cr VTM) and ordinary iron ore were used as raw materi...
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| Format: | Article |
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MDPI AG
2023-06-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/13/7/1171 |
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| author | Jianxing Liu Zhenxing Xing Xuyang Wang Gongjin Cheng Xiangxin Xue |
| author_facet | Jianxing Liu Zhenxing Xing Xuyang Wang Gongjin Cheng Xiangxin Xue |
| author_sort | Jianxing Liu |
| collection | DOAJ |
| description | Vanadium titanomagnetite is an important mineral resource. It is a raw material for ironmaking, vanadium extraction, strategic metal titanium production, and titanium dioxide production. In this study, high chromium vanadium titanomagnetite (High-Cr VTM) and ordinary iron ore were used as raw materials for pelletizing. The effect of V<sub>2</sub>O<sub>5</sub> on the preparation and properties of High-Cr VTM pellets was studied. The influence of V<sub>2</sub>O<sub>5</sub> on the properties of the green pellets, the compressive strength of oxidized pellets, the reduction swelling index and reduction degree, softening-melting behavior, and the migration law of Fe, Ti, and Cr in the reduction process were studied by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show that with the increase in V<sub>2</sub>O<sub>5</sub> content, the properties of the green pellets basically showed a trend of first decreasing and then increasing but all met the basic requirements of pelletizing. When the added amount of V<sub>2</sub>O<sub>5</sub> in the pellet was 6%, the compressive strength of the oxidized pellet was the lowest at only 2565 N/pellet but it still met the quality requirements for pellets in blast furnace production. As the dosage of V<sub>2</sub>O<sub>5</sub> increased, the reduction swelling index and reduction degree of the pellets showed a trend of first increasing and then decreasing. The addition of V<sub>2</sub>O<sub>5</sub> can increase the softening initial temperature, softening final temperature, melting start temperature, and dripping temperature of the High-Cr VTM pellets, narrowing the softening interval, and expanding the melting dripping interval. The experimental results provided a data reference for revealing the influence of V<sub>2</sub>O<sub>5</sub> on High-Cr VTM pellets during the blast furnace smelting process. |
| first_indexed | 2024-03-11T00:49:53Z |
| format | Article |
| id | doaj.art-757ce30eefeb4d6b8f3517af14f7b912 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-11T00:49:53Z |
| publishDate | 2023-06-01 |
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| record_format | Article |
| series | Metals |
| spelling | doaj.art-757ce30eefeb4d6b8f3517af14f7b9122023-11-18T20:28:52ZengMDPI AGMetals2075-47012023-06-01137117110.3390/met13071171Effect of V<sub>2</sub>O<sub>5</sub> on Consolidation, Reduction, and Softening-Melting Behavior of High-Cr Vanadium TitanomagnetiteJianxing Liu0Zhenxing Xing1Xuyang Wang2Gongjin Cheng3Xiangxin Xue4School of Metallurgy, Northeastern University, Shenyang 110819, ChinaSchool of Metallurgy, Northeastern University, Shenyang 110819, ChinaSchool of Metallurgy, Northeastern University, Shenyang 110819, ChinaSchool of Metallurgy, Northeastern University, Shenyang 110819, ChinaSchool of Metallurgy, Northeastern University, Shenyang 110819, ChinaVanadium titanomagnetite is an important mineral resource. It is a raw material for ironmaking, vanadium extraction, strategic metal titanium production, and titanium dioxide production. In this study, high chromium vanadium titanomagnetite (High-Cr VTM) and ordinary iron ore were used as raw materials for pelletizing. The effect of V<sub>2</sub>O<sub>5</sub> on the preparation and properties of High-Cr VTM pellets was studied. The influence of V<sub>2</sub>O<sub>5</sub> on the properties of the green pellets, the compressive strength of oxidized pellets, the reduction swelling index and reduction degree, softening-melting behavior, and the migration law of Fe, Ti, and Cr in the reduction process were studied by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show that with the increase in V<sub>2</sub>O<sub>5</sub> content, the properties of the green pellets basically showed a trend of first decreasing and then increasing but all met the basic requirements of pelletizing. When the added amount of V<sub>2</sub>O<sub>5</sub> in the pellet was 6%, the compressive strength of the oxidized pellet was the lowest at only 2565 N/pellet but it still met the quality requirements for pellets in blast furnace production. As the dosage of V<sub>2</sub>O<sub>5</sub> increased, the reduction swelling index and reduction degree of the pellets showed a trend of first increasing and then decreasing. The addition of V<sub>2</sub>O<sub>5</sub> can increase the softening initial temperature, softening final temperature, melting start temperature, and dripping temperature of the High-Cr VTM pellets, narrowing the softening interval, and expanding the melting dripping interval. The experimental results provided a data reference for revealing the influence of V<sub>2</sub>O<sub>5</sub> on High-Cr VTM pellets during the blast furnace smelting process.https://www.mdpi.com/2075-4701/13/7/1171high-Cr VTMV<sub>2</sub>O<sub>5</sub>pelletreductionsoftening-melting |
| spellingShingle | Jianxing Liu Zhenxing Xing Xuyang Wang Gongjin Cheng Xiangxin Xue Effect of V<sub>2</sub>O<sub>5</sub> on Consolidation, Reduction, and Softening-Melting Behavior of High-Cr Vanadium Titanomagnetite Metals high-Cr VTM V<sub>2</sub>O<sub>5</sub> pellet reduction softening-melting |
| title | Effect of V<sub>2</sub>O<sub>5</sub> on Consolidation, Reduction, and Softening-Melting Behavior of High-Cr Vanadium Titanomagnetite |
| title_full | Effect of V<sub>2</sub>O<sub>5</sub> on Consolidation, Reduction, and Softening-Melting Behavior of High-Cr Vanadium Titanomagnetite |
| title_fullStr | Effect of V<sub>2</sub>O<sub>5</sub> on Consolidation, Reduction, and Softening-Melting Behavior of High-Cr Vanadium Titanomagnetite |
| title_full_unstemmed | Effect of V<sub>2</sub>O<sub>5</sub> on Consolidation, Reduction, and Softening-Melting Behavior of High-Cr Vanadium Titanomagnetite |
| title_short | Effect of V<sub>2</sub>O<sub>5</sub> on Consolidation, Reduction, and Softening-Melting Behavior of High-Cr Vanadium Titanomagnetite |
| title_sort | effect of v sub 2 sub o sub 5 sub on consolidation reduction and softening melting behavior of high cr vanadium titanomagnetite |
| topic | high-Cr VTM V<sub>2</sub>O<sub>5</sub> pellet reduction softening-melting |
| url | https://www.mdpi.com/2075-4701/13/7/1171 |
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