| 流态化还原铁精粉粘结过程试验研究 |
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| 引用本文： | 邵剑华,郭占成,唐惠庆.流态化还原铁精粉粘结过程试验研究[J].钢铁,2011,46(2):7-11. |
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| 作者姓名： | 邵剑华 郭占成 唐惠庆 |
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| 作者单位： | 北京科技大学生态与循环冶金教育部重点实验室,北京,100083 |
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| 基金项目： | 国家自然科学基金委与上海宝钢集团公司联合基金重点资助项目(50834007) |
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| 摘 要： | 采用热态可视化流化床装置研究了铁精粉流态化还原过程,描述了流化床粘结失流过程的一些宏观表现和颗粒的微观变化.研究发现,失流后不同还原剂引起的料层膨胀程度明显不同,例如用H2作还原剂时料层膨胀40%左右,而用CO时膨胀会达到82%,而且颗粒问的粘结强度也与还原剂的种类有关.同时,适当降低还原温度可以延缓失流的发生也得到了...
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| 关 键 词： | 流化床 铁晶须 粘结失流 还原 铁矿粉 |
Experimental Study on Sticking Process During Reduction of Iron Ore Concentrate Fines in Fluidized Bed |
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| SHAO Jian-hua,GUO Zhan-cheng,TANG Hui-qing.Experimental Study on Sticking Process During Reduction of Iron Ore Concentrate Fines in Fluidized Bed[J].Iron & Steel,2011,46(2):7-11. |
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| Authors: | SHAO Jian-hua GUO Zhan-cheng TANG Hui-qing |
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| Affiliation: | SHAO Jian-hua,GUO Zhan-cheng,TANG Hui-qing(Key Laboratory of Ecological and Recycle Metallurgy,University of Science and Technology Beijing,Beijing 100083,China) |
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| Abstract: | By the use of thermal state visualized fluidized bed,sticking process during reduction of concentrate fines was investigated.The macrography view of fluidized bed and microcosmic changes of particles were described.It is found that different reductants lead to different swelling levels of batch layer.Swelling is about 40% in H2-N2 mixtures,but it rises to 82% in CO-N2 mixtures.In addition,sticking strength between grains relates to the type of reductant.Furthermore,it is proved that the sticking is postpona... |
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| Keywords: | fluidized bed iron whisker sticking reduction fine iron ore |
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