| 吴喜,陈德胜,王丽娜,赵宏欣,甄玉兰,于宏东,齐涛.钒钛磁铁精矿一步煤基直接还原—熔分的研究[J].有色金属（冶炼部分）,2019(2):15-20. |
| 钒钛磁铁精矿一步煤基直接还原—熔分的研究 |
| Study on One-Step Coal-Based Direct Reduction and Melting of Vanadium Titanium Magnetite Concentrate |
| 投稿时间：2018-10-26 修订日期：2018-10-31 |
| DOI：doi：10.3969/j.issn.1007-7545.2019.02.004 |
| 中文关键词: 钒钛磁铁矿 直接还原 回收率 熔分 |
| 英文关键词:vanadium titano-magnetite direct reduction recovery melting separation |
| 基金项目:国家自然科学基金资助项目（51774260，21506233，21606241，51804289）；中国科学院战略金属资源清洁利用创新交叉团队项目资助；中国科学院前沿科学重点研究项目（QYZDJ-SSW-JSC021） |
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| 中文摘要: |
| 以煤为还原剂、氢氧化钠为添加剂，采用一步煤基直接还原—熔分工艺对国内某钒钛磁铁精矿进行研究。考察温度、时间、氢氧化钠添加量和配碳量对还原—熔分效果、铁回收率和钒迁移的影响。结果表明，在温度1 300 ℃、时间4 h、摩尔比C/Fe=2.6，氢氧化钠添加量50%的最优条件下，铁回收率为99.8%，渣中钒含量为1.34%。渣主要由Na6Al4Si4O17、CaTiO3、NaAlSiO4等组成，钒主要赋存在含钛渣相中，金属铁相中几乎钒的存在。 |
| 英文摘要: |
| 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. |
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