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Article Navigation >  International Journal of Minerals, Metallurgy and Materials  > 2020 > Accepted Manuscript

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Research Article

Experimental study on flow zone distribution and mixing time in a Peirce-Smith copper converter

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  • Received: 29 June 2020; Revised: 17 September 2020; Accepted: 18 September 2020; Available online: 19 September 2020
  • Peirce-Smith copper converting involved complex multiphase flow and mixing. In this work, the flow zone distribution and the mixing time in a copper PSC were investigated in a 1:5 scaled cold model. Flow field distribution including dead, splashing and strong-loop zones were measured and a dimensionless equation was developed to correlate the effects of stirring and mixing energy with an error less than 5%. Four positions in the bath including injection, splashing, strong-loop and dead zones were selected to add the hollow salt powders tracer and measure the mixing time. The injection of the quartz flux through the tuyeres or into the backflow point of the splashing wave through a chute is recommended, instead of adding it through a crane hopper from the top of the furnace, to improve the slag-making reaction.
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Experimental study on flow zone distribution and mixing time in a Peirce-Smith copper converter

  • Corresponding author:

    Hong Yong Sohn    E-mail: h.y.sohn@utah.edu

  • 1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China
  • 2. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
  • 3. Department of Materials Science and Engineering, The University of Utah, Salt Lake City, Utah 84112, USA
    Received: 29 June 2020
    Revised: 17 September 2020
    Accepted: 18 September 2020
    Available online: 19 September 2020

Abstract: Peirce-Smith copper converting involved complex multiphase flow and mixing. In this work, the flow zone distribution and the mixing time in a copper PSC were investigated in a 1:5 scaled cold model. Flow field distribution including dead, splashing and strong-loop zones were measured and a dimensionless equation was developed to correlate the effects of stirring and mixing energy with an error less than 5%. Four positions in the bath including injection, splashing, strong-loop and dead zones were selected to add the hollow salt powders tracer and measure the mixing time. The injection of the quartz flux through the tuyeres or into the backflow point of the splashing wave through a chute is recommended, instead of adding it through a crane hopper from the top of the furnace, to improve the slag-making reaction.

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