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Study on Resource Utilization of Sintering Semi-Dry Desulphurization Ash

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Materials Processing Fundamentals 2024 (TMS 2024)

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

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Abstract

The desulfurization ash contains high content of CaSO3, which makes it difficult for its resource utilization. In the present study, the physical–chemical performance of the sintering flue gas desulfurization ash from a typical steel corporation was analyzed. On this basis, the H2O2 oxidation modification, MnSO4 catalytic modification and air oxidation test with different process conditions of it were studied, and the best process conditions of desulfurization ash modification were analyzed. Considering the test results and the industrial practice, the optimal process conditions were thought as: hydrogen peroxide was oxidant, pH value was 5.5, the molar ratio of H2O2 and CaSO3 was 1:1, the slurry solid content was 10%, and the reaction time was 1.5 h, and under these conditions, the CaSO3 conversion rate reached 98%. However, MnSO4 was not suggested to be added for oxidation of sintering semi-dry desulphurization ash.

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Acknowledgements

This work was financially supported by the Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education).

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Authors and Affiliations

  1. School of Metallurgy and Materials Engineering, Jiangsu University of Science and Technology, Zhangjiagang 215600, Jiangsu, China

    Zhang Yang & Jiao Lina

Authors
  1. Zhang Yang
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  2. Jiao Lina
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Corresponding author

Correspondence to Jiao Lina .

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Editors and Affiliations

  1. Oculatus Consulting, Marietta, GA, USA

    Samuel Wagstaff

  2. Gopher Resource, Tampa, FL, USA

    Alexandra Anderson

  3. Oak Ridge National Laboratory, Oak Ridge, TN, USA

    Adrian S. Sabau

  4. Argonne National Laboratory, Lamont, IL, USA

    Chukwunwike Iloeje

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Yang, Z., Lina, J. (2024). Study on Resource Utilization of Sintering Semi-Dry Desulphurization Ash. In: Wagstaff, S., Anderson, A., Sabau, A.S., Iloeje, C. (eds) Materials Processing Fundamentals 2024. TMS 2024. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-50184-5_28

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