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Segregation Charging Behavior of Ultra-Fine Iron Ore Briquette in Sinter Feed Bed: DEM Analysis

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Abstract

The sinter–briquette complex firing process which is an effective technology for utilization of low grade ultra-fine ore is a method for charging sinter feed mixed with briquette made of ultra-fine ore. To uniformly fire briquettes using the excess heat from the lower part of the sinter feed bed, they must be segregated in that region. In this study, the particle properties and interaction coefficients of real samples were measured and used for a numerical analysis. Furthermore, a discrete element method simulation was used to investigate the characteristics of the sinter feed and briquette charging process, namely burden distribution and porosity, by varying the shape and mixing ratio of the briquette. The results showed the while the shape of the briquette did not affect the burden distribution and porosity, the porosity at the lower part of the bed proportionally increased with the briquette mixing ratio. Furthermore, it was observed that to achieve optimized heat distribution of the bed, the proportion of briquette in the charging mixture should be more than 20%.

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Acknowledgements

This research was financially supported by 2019 INHA University research fund.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Inha University, Incheon, 22212, Republic of Korea

    Kang-Min Kim, Jong-Ho Bae & Jeong-Whan Han

  2. Thermo Fluid and Process Research Group, Technical Research Laboratories, POSCO, Pohang, 37589, Republic of Korea

    Jong-In Park

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  1. Kang-Min Kim
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  2. Jong-Ho Bae
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Correspondence to Jeong-Whan Han.

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Kim, KM., Bae, JH., Park, JI. et al. Segregation Charging Behavior of Ultra-Fine Iron Ore Briquette in Sinter Feed Bed: DEM Analysis. Met. Mater. Int. 26, 1218–1225 (2020). https://doi.org/10.1007/s12540-019-00415-y

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