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Pyrometric temperature and size measurements of chalcopyrite particles during flash oxidation in a laminar flow reactor

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Abstract

A fast two-color pyrometer has been constructed and applied to simultaneous temperature and size measurements of individual chalcopyrite particles (CuFeS2) during flash oxidation in a laminar flow reactor. The influence of different oxygen concentrations (0, 10, 20, 50, and 75 vol pct), gas temperatures (1073 and 1273 K), particle size fractions (53 to 74 μm and 74 to 150 μm), and reaction times (up to 0.17 seconds) on chalcopyrite particle temperature and size distributions was studied. The particle reaction rates were characterized by the sulfur mass in the solid reaction product. Particle temperatures ranged from the ambient gas temperature up to 2700 K. A strong correlation between the oxygen concentration and the median particle temperature was observed.

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Author notes

  1. Risto Oikari (Research Administrator), Timo Joutsenoja (Research Specialist) & Petteri Mikkola (Research Scientist)

    Present address: the Optics Laboratory, Institute of Physics, Tampere University of Technology, FI-3310, Tampere, Finland

Authors and Affiliations

  1. the Optics Laboratory, Institute of Physics, Tampere University of Technology, FI-3310, Tampere, Finland

    Toni Laurila (Research Scientist) & Rolf Hernberg (Professor)

  2. Kajaani Technology Center, FI-87400, Kajaani, Finland

    Risto Oikari (Research Administrator)

  3. UPM-Kymmene, New Ventures, FI-33101, Tampere, Finland

    Timo Joutsenoja (Research Specialist)

  4. Technical Research Center, Finnish Defence Forces, FI-34111, Lakiala, Finland

    Petteri Mikkola (Research Scientist)

  5. the Outokumpu Research Center, FI-28101, Pori, Finland

    Tiina Ranki-Kilpinen (Research Scientist) & Pekka Taskinen (Research Manager)

Authors
  1. Toni Laurila
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  2. Rolf Hernberg
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  3. Risto Oikari
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  4. Timo Joutsenoja
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  7. Pekka Taskinen
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Laurila, T., Hernberg, R., Oikari, R. et al. Pyrometric temperature and size measurements of chalcopyrite particles during flash oxidation in a laminar flow reactor. Metall Mater Trans B 36, 201–208 (2005). https://doi.org/10.1007/s11663-005-0021-4

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  • DOI: https://doi.org/10.1007/s11663-005-0021-4

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