| 单颗粒褐铁矿气基磁化焙烧过程的还原模型 |
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| 引用本文： | 代涛,李保卫,武文斐. 单颗粒褐铁矿气基磁化焙烧过程的还原模型[J]. 金属矿山, 2014, 43(2): 79-82 |
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| 作者姓名： | 代涛 李保卫 武文斐 |
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| 作者单位： | 1.内蒙古科技大学能源与环境学院，内蒙古 包头 014010；2.白云鄂博矿多金属资源综合利用重 点实验室，内蒙古 包头 014010 |
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| 基金项目： | 内蒙古科技厅创新团队项目（编号：83101004）。 |
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| 摘 要： | 针对褐铁矿磁化焙烧过程中，单颗粒氧化铁还原机理认识难的复杂问题，建立了基于多孔介质模 型的一维非稳态还原模型。通过数值计算，开展了不同温度、CO浓度及不同初始孔隙率影响下的 褐铁矿还原度的研究。研究表明，随机孔模型能很好地应用于还原模型,多孔介质孔道内气体传 输特性对反应有一定的影响,粒径为100 μm的颗粒在800 ℃下完全还原仅需18 s左右。
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| 关 键 词： | 单颗粒褐铁矿 随机孔模型 还原模型 数值模拟 |
Reduction Model for Gas Magnetization Roasting Process of Single Limonite Particles |
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| Dai Tao,Li Baowei,Wu Wenfei. Reduction Model for Gas Magnetization Roasting Process of Single Limonite Particles[J]. Metal Mine, 2014, 43(2): 79-82 |
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| Authors: | Dai Tao Li Baowei Wu Wenfei |
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| Affiliation: | 1.School of Energy and Environment,Inner Mongolia University of Science and Technology, Baotou 014010,China；2.Key laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources，Baotou 014010,China |
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| Abstract: | One-dimensional unstable reduction model based on porous medium model was developed aiming at the complex problems in acquaintance of single ferric oxide particle during magnetization roasting of limonite.By numerical calculation，the conversion degree of limonite was studied at different temperature，various CO concentration and different initial porosity.The research results showed that random pore model can be applied to reduction model well，and transmission characteristics of gas within the porous media channels have some degree of impacts on reaction.It takes only about 18 s for particles of 100 μm in diameter to complete reduction course at 800 ℃. |
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| Keywords: | Single limonite particle Random pore model Reduction model Numerical simulation |
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