| 低贫难选铁矿深度还原中助熔剂的研究现状及进展 |
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| 引用本文： | 聂轶苗,刘淑贤,张晋霞,牛福生,白丽梅. 低贫难选铁矿深度还原中助熔剂的研究现状及进展[J]. 中国矿业, 2015, 24(9) |
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| 作者姓名： | 聂轶苗 刘淑贤 张晋霞 牛福生 白丽梅 |
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| 作者单位： | 河北联合大学 矿业工程学院,河北联合大学 矿业工程学院,河北联合大学 矿业工程学院,河北联合大学 矿业工程学院,河北联合大学 矿业工程学院 |
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| 基金项目： | “低贫难选氧化铁矿低温深度还原助熔机理研究(项目编号：E2013209309)” |
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| 摘 要： | 针对低贫难选铁矿深度还原中助熔剂的研究,从助熔剂的种类及用量对深度还原的影响、机理研究等方面入手,论述了国内深度还原助熔剂的研究现状及进展,同时对助熔剂在深度还原中的动力学和热力学研究进行了阐述。研究认为,常用助熔剂有钙基和钠基助熔剂,在低贫难选铁矿深度还原中加入这两种助熔剂都会提高Fe2O3还原为Fe3O4的反应速率,同时减少或避免了2FeO·SiO2等比FeO更难还原的氧化物的生成,因此可以降低系统还原温度,且利于铁粒粒径的增大,但是这两种助熔剂的助熔效果不大相同,这与反应温度和被还原铁矿性质有关。
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| 关 键 词： | 低贫难选铁矿 深度还原 助熔剂 研究现状与进展 |
| 收稿时间： | 2014-04-28 |
| 修稿时间： | 2014-06-11 |
The Research Current Situation and Progress of Fluxing Agent in Reducing Deep Reduction of low grade unwieldy iron ore |
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| Nie Yimiao,Liu Shuxian,Zhang Jinxi,Niu Fusheng and Bai Limei. The Research Current Situation and Progress of Fluxing Agent in Reducing Deep Reduction of low grade unwieldy iron ore[J]. CHINA MINING MAGAZINE, 2015, 24(9) |
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| Authors: | Nie Yimiao Liu Shuxian Zhang Jinxi Niu Fusheng Bai Limei |
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| Affiliation: | College of Mining Engineering,Hebei United University,Tangshan,063009,College of Mining Engineering,Hebei United University,Tangshan,063009,College of Mining Engineering,Hebei United University,Tangshan,063009,College of Mining Engineering,Hebei United University,Tangshan,063009,College of Mining Engineering,Hebei United University,Tangshan,063009 |
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| Abstract: | Fluxing agent,which was added into the reducing deep reduction of low grade unwieldy iron ore, could reduce the system reduction temperature, reduce or avoid the generation of ferric silicate and benefit the increase of iron grain size. The current situation and progress of fluxing agent, kinetics and thermodynamics of fluxing agent in the reduction system were stated in this paper based on the research of the influence of fluxing agent kinds, dosage on the deep reduction. |
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| Keywords: | low-grade unwieldy iron ore deep reduction fluxing agent research current situation |
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