| 不同惰性物对抑制流化还原过程中黏结失流行为的研究 |
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| 引用本文： | 薄荷,郝素菊,张丽颖,蒋武锋,张玉柱,方觉.不同惰性物对抑制流化还原过程中黏结失流行为的研究[J].材料与冶金学报,2017,16(3). |
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| 作者姓名： | 薄荷 郝素菊 张丽颖 蒋武锋 张玉柱 方觉 |
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| 作者单位： | 1. 唐山科技职业技术学院 冶金工程系,河北 唐山,063011;2. 华北理工大学 冶金与能源学院,河北 唐山,063210 |
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| 基金项目： | 国家自然科学基金项目，河北省高等学校科学技术研究项目，河北省自然科学基金资助项目 |
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| 摘 要： | 本文采用可视化流化床进行了石灰石粉、煤粉、干馏煤粉和焦粉作为惰性物对抑制流化还原黏结失流行为的研究.结果表明:配入少量的石灰石粉会降低黏结失流温度,加剧黏结失流现象,因此石灰石粉不宜作为流化还原过程中抑制黏结失流的惰性物;直接使用煤粉作为惰性物会带来难以解决的煤焦油问题,在生产实践中是不可行的;干馏煤对黏结失流具有很好的抑制作用,添加15%粒度为0.11~0.12 mm的干馏煤可将黏结失流温度提高75℃;焦粉对黏结失流具有很好的抑制作用,考虑工业生产的可行性与经济性,适宜的焦粉粒度可以取0.08~0.12 mm.
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| 关 键 词： | 流化床 黏结失流 惰性物 煤粉 焦粉 |
Sticking resistance of iron ore fines doped different inert materials during fluidized bed reduction |
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| Bo He,Hao Suju,Zhang Liying,Jiang Wufeng,Zhang Yuzhu,Fang Jue.Sticking resistance of iron ore fines doped different inert materials during fluidized bed reduction[J].Journal of Materials and Metallurgy,2017,16(3). |
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| Authors: | Bo He Hao Suju Zhang Liying Jiang Wufeng Zhang Yuzhu Fang Jue |
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| Abstract: | The sticking resistances of limestone powder, pulverized coal,carbonized coal powder and coke powder as inert materials were studied by using a visualized fluidized bed. The results showed that the limestone powder is not suitable to be an inert material, because it will decrease the sticking temperature and intensify the sticking phenomenon. It is difficult to solve the problem of coal tar by using the pulverized coal. The carbonized coal has a good inhibitory effect on sticking. Addition of 15% of itwith a particle size of 0. 11 ~ 0. 12 mm can increase the sticking temperature by 75℃. The coke powder also has a good inhibitory effect on sticking. Considered the feasibility and economy of the industrial production, the suitable size of the coke powder is 0. 08~0. 12 mm. |
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| Keywords: | fluidized bed sticking inertmaterial pulverized coal coke powder |
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