| 赵峰,蒋训雄,汪胜东,李达,蒋伟,刘巍.多金属结核金属化还原过程热力学及动力学[J].有色金属工程,2019,9(8):. |
| 多金属结核金属化还原过程热力学及动力学 |
| Thermodynamics and Kinetics of Metallic Reduction of Polymetallic Nodules |
| 投稿时间：2018-10-12 修订日期：2018-10-23 |
| DOI： |
| 中文关键词: 多金属结核 金属化还原 热力学 动力学 |
| 英文关键词:polymetallic nodules metallic reduction Thermodynamics kinetics |
| 基金项目:国家自然科学基金资助项目(51704024) |
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| 摘要点击次数: 40 |
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| 中文摘要: |
| 对多金属结核金属化还原过程进行热力学和动力学分析。结果表明,MnO2还原起始温度最低,优先还原；NiO、CoO、CuO、FeO四种氧化物的还原比MnO容易,其中最难还原的FeO,其开始还原温度约712℃(985K),而碳还原MnO的理论开始反应温度约为1420℃(1693.15K),为选择性还原提供了充足的温度范围。反应体系的反应速率受扩散过程控制,固相反应动力学方程符合金斯特林格方程。 |
| 英文摘要: |
| Thermodynamics and kinetics of Metallic Reduction of Polymetallic Nodules were analyzed. The results indicate that MnO2 is preferential reduced with a low initial reduction temperature, NiO、CoO、CuO、FeO are easier reduced than MnO, The initial reduction temperature of FeO is about 712℃(985K), FeO whose initial reduction temperature is about 712℃(985K)is the most difficult to reduce in NiO、CoO、CuO、FeO, The initial reduction temperature of MnO is about 1420℃(1693.15K)using coal as the reductant, An adequate temperature range is provided for selective reduction. The reaction rate of the reaction system is controlled by diffusion process, The solid - phase reaction kinetics equation conforms to kingstinger equation. |
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