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Open AccessArticle

Copper Oxide Spectral Emission Detection in Chalcopyrite and Copper Concentrate Combustion

1
Metallurgical Engineering Department, University of Concepción, Concepción CCP4070386, Chile
2
Dirección de Investigación, Technological University of Chile INACAP, Avenida El Condor 720, Ciudad Empresarial, Huechuraba, Santiago RM858000, Chile
3
Electrical Engineering Department, University of Concepción, Concepción CCP4070386, Chile
*
Author to whom correspondence should be addressed.
Processes 2021, 9(2), 188; https://doi.org/10.3390/pr9020188
Received: 21 December 2020 / Revised: 14 January 2021 / Accepted: 16 January 2021 / Published: 20 January 2021
(This article belongs to the Special Issue Advanced Process Monitoring for Industry 4.0)
In this research, the spectral detection of copper oxide is reported from different combustion tests of chalcopyrite particles and copper concentrates. Combustion experiments were performed in a bench reactor. In all the tests, the radiation emitted from the sulfide particle reactions was captured in the VIS–NIR range. The obtained spectral data were processed by using the airPLS (adaptive iteratively reweighted penalized least squares) algorithm to remove their baseline, and principal component analysis (PCA) and the multivariate curve resolution method alternate least squares (MCR-ALS) methods were applied to identify the emission lines or spectral bands of copper oxides. The extracted spectral pattern is directly correlated with the emission profile reported in the literature, evidencing the potential of using spectral analysis techniques on copper sulfide combustion spectra. View Full-Text
Keywords: combustion; optical sensors; spectroscopy measurements; signal detection; digital processing; principal component analysis; multivariate data analysis; curve resolution combustion; optical sensors; spectroscopy measurements; signal detection; digital processing; principal component analysis; multivariate data analysis; curve resolution
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MDPI and ACS Style

Reyes, G.; Diaz, W.; Toro, C.; Balladares, E.; Torres, S.; Parra, R.; Vásquez, A. Copper Oxide Spectral Emission Detection in Chalcopyrite and Copper Concentrate Combustion. Processes 2021, 9, 188. https://doi.org/10.3390/pr9020188

AMA Style

Reyes G, Diaz W, Toro C, Balladares E, Torres S, Parra R, Vásquez A. Copper Oxide Spectral Emission Detection in Chalcopyrite and Copper Concentrate Combustion. Processes. 2021; 9(2):188. https://doi.org/10.3390/pr9020188

Chicago/Turabian Style

Reyes, Gonzalo; Diaz, Walter; Toro, Carlos; Balladares, Eduardo; Torres, Sergio; Parra, Roberto; Vásquez, Alejandro. 2021. "Copper Oxide Spectral Emission Detection in Chalcopyrite and Copper Concentrate Combustion" Processes 9, no. 2: 188. https://doi.org/10.3390/pr9020188

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