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| Treatment of Low Grade Vanadium-Bearing Titanomagnetite Concentrates by Direct Reduction |
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Received:April 05, 2017
Revised:April 20, 2017
Accepted:April 21, 2017
Published Online:August 21, 2017
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| DOI：doi：10.3969/j.issn.1007-7545.2017.09.013 |
| KeyWord:low grade vanadium-bearing titanomagnetite concentrates; direct reduction; metallization ratio; separation |
| Author | Institution |
| BAI Yun |
昆明理工大学冶金与能源工程学院 |
| CHEN De-sheng |
中国科学院过程工程研究所 |
| MA Wen-hui |
昆明理工大学冶金与能源工程学院 |
| WANG Li-na |
中国科学院过程工程研究所 |
| ZHAO Hong-xin |
中国科学院过程工程研究所 |
| ZHEN Yu-lan |
中国科学院过程工程研究所 |
| YU Hong-dong |
中国科学院过程工程研究所 |
| QI Tao |
中国科学院过程工程研究所 |
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| Abstract: |
| Low grade vanadium-bearing titanomagnetite concentrates were reduced isothermally with addition of a small amount of Na2CO3 NaCl at 1 000~1 300 ℃ and anthracite as reductant. Iron concentrates and vanadium-bearing titanium slag were obtained by magnetic separation. The effects of C/Fe molar ratio, reduction temperature, and reduction time on metallization degree of iron, content of V/Ti in samples, and phase transformation were investigated. The results show that C/Fe molar ratio and reduction temperature have great impacts on direct reduction process. Metallization degree is 92.8% under the conditions including C/Fe molar ratio of 1.2, reduction temperature of 1 200 ℃, and reduction time of 2 h. Vanadium is enriched in titanium slag after reduction. Efficient separation between Fe and V/Ti is achieved. |
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