|
| Study on One-Step Coal-Based Direct Reduction and Melting of Vanadium Titanium Magnetite Concentrate |
|
Received:October 26, 2018
Revised:October 31, 2018
Accepted:October 31, 2018
Published Online:January 24, 2019
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2019.02.004 |
| KeyWord:vanadium titano-magnetite; direct reduction; recovery; melting separation |
| Author | Institution |
| wuxi |
中国科学院过程工程研究所 |
| chendesheng |
中国科学院过程工程研究所 |
| wanglina |
中国科学院过程工程研究所 |
| ZHAO Hong-xing |
中国科学院过程工程研究所 |
| ZHEN Yulan |
中国科学院过程工程研究所 |
| YU Hongdong |
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 |
|
| Hits: 2307 |
| Download times: 1950 |
| Abstract: |
| Vanadium titano-magnetite concentrate was studied by one-step coal-based direct reduction-melting process with coal as reductant and sodium hydroxide as additive. Effects of temperature, time and dosage of sodium hydroxide and carbon on reduction-melting, iron recovery and vanadium migration were investigated. The results show that iron recovery is 99.8% and vanadium content in slag is 1.34% under the optimum conditions including temperature of 1 300 ℃, time of 4 h, C/Fe molar ratio of 2.6, and NaOH dosage of 50%. Main components of slag include Na6Al4Si4O17, CaTiO3 and NaAlSiO4. Vanadium mainly exists in Ti bearing slag phase while hardly exist in metallic iron phase. |
| Close |