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Radiometric Temperature Measurement of Copper Concentrates in Flash Smelting Conditions Simulated at Laboratory Scale Coupled With a Macroscopic Chemical Reaction Model and Automated Mineralogical Characterization

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Abstract

The study of flash combustion of copper concentrates has been traditionally approached from the phenomenological perspective by describing the physicochemical transformation at the particle level. Few works have focused on analyzing and modeling the behavior of flames produced by a cloud of particles under equivalent flash smelting furnace conditions. The present work aims to demonstrate the ability of non-invasive optoelectronic instrumentation to determine the temperature of the flame formed in a copper concentrate burner in flash smelting conditions at laboratory scale with a Drop Tube furnace. The temperatures measured with the optoelectronic system (Radiometric Temperature) were compared with the temperature obtained by the mass and heat transfer balance through global reactions of a set industrial copper concentrates (Measured Temperature). According to the mineral-chemical characterization of flash smelting products at a laboratory scale made with an automated mineralogy equipment, the radiometric temperatures are highly correlated with those calculated through the macroscopic chemical reaction model.

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Acknowledgments

We thank the Metallurgical Engineering Department of the University of Concepcion for giving access to their facilities, allowing us to conduct the experiments reported in this work.

Author Contributions

Conceptualization, W.D, G.R, and C.T; methodology, W.D, G.R, and C.T; software, C.T; validation, W.D and G.R; formal analysis, W.D, G.R, and C.T; investigation, W.D and G.R; resources, R.P and E.B; data curation, G.R; writing—original draft preparation, W.D and G.R..; writing—review and editing, C.T, R.L, E.B, and R.P; visualization, W.D; supervision, C.T, E.B, and R.P; project administration, R.P; funding acquisition, E.B and R.P. All authors have read and agreed to the published version of the manuscript.

Funding

This research was funded by the CONICYT, Anillo Minería ACM170008, and by FONDEF IT under Grant Number 16M10029.

Conflict of interest

The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript; nor in the decision to publish the results.

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Authors and Affiliations

  1. Metallurgical Department, Chemical Metallurgy Pilot Plant, Universidad de Concepción, Concepción, Chile

    Walter Díaz, Gonzalo Reyes, Ruimin Li, Eduardo Balladares & Roberto Parra

  2. Electrical, Electronic and Telecommunication Engineering Department, Technological University of Chile, INACAP, Autopista Concepción – Talcahuano 7421, Talcahuano, Chile

    Carlos Toro

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  1. Walter Díaz
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  2. Gonzalo Reyes
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  4. Ruimin Li
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  6. Roberto Parra
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Correspondence to Gonzalo Reyes or Eduardo Balladares.

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Díaz, W., Reyes, G., Toro, C. et al. Radiometric Temperature Measurement of Copper Concentrates in Flash Smelting Conditions Simulated at Laboratory Scale Coupled With a Macroscopic Chemical Reaction Model and Automated Mineralogical Characterization. Metall Mater Trans B 53, 3967–3978 (2022). https://doi.org/10.1007/s11663-022-02657-5

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  • DOI: https://doi.org/10.1007/s11663-022-02657-5

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