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Simulation and analysis of O_(2)-cao jet behavior with different shrouding fuel mediums in electric arc furnace steelmaking

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Journal of Iron and Steel Research International 2020年第11期27卷 1259-1269页

作者： Bing-long Zhang Guang-sheng Wei Run-zao Liu Rong Zhu Rong-fang Su School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials Beijing 100083China Beijing Rongcheng Jingye Technology Co. Ltd.Beijing 100083China

The O_(2)-cao jet with shrouding combustion flame demonstrates some advantages in quick melting and effective slag foaming by delivering lime powder deeply into the molten *** the discrete particle model and the eddy dissipation concept model with the detailed chemical kinetic mechanisms(GRI-Mech 3.0),computational fluid dynamics models of the O_(2)-cao jet with different shrouding fuel mediums injection were ***,the results of the numerical simulation were validated by the measured data of cold test for O_(2)-cao ***,the interaction between the particles and the gas jet of the O_(2)-cao jet and the effect of shrouding fuel medium species on the fluid flow characteristics of the O_(2)-cao jet were *** show that the cao particles can be effectively heated by the shrouding high-temperature combustion flame and compared with the O_(2)-cao jet without shrouding gas,the potential core length was increased about 2.5,3.3 and 4.3 times by the shrouding flame generated from CO,CH_(4) and C_(3)H_(8).And with shrouding CH_(4) and C_(3)H_(8) injection,the cao particles can be clustered together in a long distance,which would be helpful to improve the utilization efficiency of cao particles.

关键词： O_(2)-cao jet Shrouding fuel medium Electric arc furnace steelmaking Numerical simulation Cold test cao particle

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