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您的检索式：作者名="Qipeng Bao"
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| 1 | Numerical simulation of flash reduction in a drop tube reactor with variable temperatures显示文摘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(20–110μm),peak temperature(1250–1550°C),and reductive atmosphere(H_(2)/CO),were also investigated.The height variation lines indicated that small particles(50μm)had a longer residence time(3.6 s)than large particles.CO provided a longer residence time(~1.29 s)than H_(2)(~1.09 s).However,both the experimental and analytical 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 50μm and 1350°C in H2 atmosphere,and40μm and 1550°C in CO atmosphere,respectively. | Yiru Yang Qipeng Bao Lei Guo Zhe Wang Zhancheng Guo | 2022 | International Journal of Minerals,Metallurgy and Materials2022，29，2： | 1 |
| 2 | New process for treating boron-bearing iron ore by flash reduction coupled with magnetic separation显示文摘Boron is an important industrial raw material often sourced from minerals containing different compounds that cocrystallize,which makes it difficult to separate the mineral phases through conventional beneficiation.This study proposed a new treatment called flash reduction-melting separation(FRMS)for boron-bearing iron concentrates.In this method,the concentrates were first flash-reduced at the temperature under which the particles melt,and the slag and the reduced iron phases disengaged at the particle scale.Good reduc-tion and melting effects were achieved above 1550℃.The B_(2)O_(3) content in the separated slag was over 18wt%,and the B content in the iron was less than 0.03wt%.The proposed FRMS method was tested to investigate the effects of factors such as ore particle size and tem-perature on the reduction and melting steps with and without pre-reducing the raw concentrate.The mineral phase transformation and morphology evolution in the ore particles during FRMS were also comprehensively analyzed. | Qipeng Bao Lei Guo Hong Yong Sohn Haibin Zuo Feng Liu Yongliang Gao Zhancheng Guo | 2024 | International Journal of Minerals,Metallurgy and Materials2024，31，3： | 0 |
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