Abstract
The difference on particle density causes mass and size segregation in the blast furnace throat, causing poor permeability in radial and circumferential direction. Understanding the effect of density difference on particle spatial-temporal distribution helps stabilize smooth operation and improve energy efficiency of blast furnace iron-making process. Based on discrete element method simulation, the influence of density difference on particle segregation behaviors is quantitatively characterized by the proposed method when the binary-sized particles are charged from parallel-type hopper of blast furnace. The results show that increasing the 4 mm particle density aggravates the mass segregation in circumferential and radial direction, and the maximum standard deviation of each ring reaches as great as 0.415. For size segregation, the difference on average mass fraction of small particle between center and edge ring decreases from 0.373 to 0.301. When increasing the 6 mm particle density, the similar particle segregation behaviors could be obtained.
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Acknowledgements
The authors appreciate for the valuable suggestions and comments proposed by the editor. The authors are also grateful to the project supported by the Fundamental Research Funds for the Central Universities (CDJZR13130031), and the financial supports from National Natural Science Foundation of China (51304257, 91634106, 51374263) are also acknowledged.
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Xu, Y. et al. (2018). Effect of Density Difference on Particle Segregation Behaviors at Bell-Less Top Blast Furnace with Parallel-Type Hopper. In: Hwang, JY., et al. 9th International Symposium on High-Temperature Metallurgical Processing. TMS 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-72138-5_39
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DOI: https://doi.org/10.1007/978-3-319-72138-5_39
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