典型文献
Numerical simulation of flash reduction in a drop tube reactor with variable temperatures
文献摘要：
A computational fluid dynamics (CFD) model was developed to accurately predict the flash reduction process, which is considered an efficient alternative ironmaking process. Laboratory-scale experiments were conducted in drop tube reactors to verify the accuracy of the CFD model. The reduction degree of ore particles was selected as a critical indicator of model prediction, and the simulated and experimental results were in good agreement. The influencing factors, including the particle size (20–110 μm), peak temperature (1250–1550°C), and reductive atmosphere (H2/CO), were also investigated. The height variation lines indicated that small particles (50 μm) had a longer residence time (3.6 s) than large particles. CO provided a longer residence time (～1.29 s) than H2 (～1.09 s). However, both the experimental and analytic-al results showed that the reduction degree of particles in CO was significantly lower than that in H2 atmosphere. The optimum experimental particle size and peak temperature for the preparation of high-quality reduced iron were found to be 50 μm and 1350°C in H2 atmosphere, and 40 μm and 1550°C in CO atmosphere, respectively.
文献关键词：
中图分类号：
作者姓名：
Yiru Yang;Qipeng Bao;Lei Guo;Zhe Wang;Zhancheng Guo
作者机构：
State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing,Beijing 100083,China
文献出处：
引用格式：
[1]Yiru Yang;Qipeng Bao;Lei Guo;Zhe Wang;Zhancheng Guo-.Numerical simulation of flash reduction in a drop tube reactor with variable temperatures)[J].矿物冶金与材料学报,2022(02):228-238
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B类：
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AB值：
0.541762
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