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Open AccessArticle

Assessing the Combined Effect of Water Temperature and Complex Water Matrices on Xanthate Adsorption Using Multiple Linear Regression

1
Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FIN-00076 Aalto, Finland
2
Centre for Minerals Research, Chemical Engineering Department, University of Cape Town, Rondebosch, Cape Town 7701, South Africa
3
VTT Technical Research Centre of Finland Ltd., FI-02044 Espoo, Finland
4
Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences, Skogsmarksgränd, SE-90183 Umeå, Sweden
*
Author to whom correspondence should be addressed.
Minerals 2020, 10(9), 733; https://doi.org/10.3390/min10090733
Received: 10 July 2020 / Revised: 4 August 2020 / Accepted: 14 August 2020 / Published: 19 August 2020
(This article belongs to the Section Mineral Processing and Extractive Metallurgy)
The combined effect of dissolved ions and water temperature on the adsorption of a xanthate collector on chalcopyrite and pentlandite was investigated using multiple linear regression. Cationic species improved the adsorption of the collector on sulphide minerals through xanthate adsorption activation. Thiosulphate ions generally had a negative effect on collector adsorption, and the interaction of thiosulphate ions and cations effectively reduced collector adsorption on the sulphide minerals. With regards to temperature variation caused by seasonal variation, this study suggests that temperature can influence the adsorption of collectors in the flotation process and this should be approached on a case by case basis as it seems to differ with the type of mineral under investigation. These fundamental results prompt a discussion on how complex water matrices can affect interactions of reagents and sulphide minerals at the solid–liquid interface and the possible effect on flotation performance. View Full-Text
Keywords: pentlandite; chalcopyrite; adsorption; multiple linear regression; temperature; passivation pentlandite; chalcopyrite; adsorption; multiple linear regression; temperature; passivation
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MDPI and ACS Style

Mhonde, N.; Schreithofer, N.; Corin, K.; Mäkelä, M. Assessing the Combined Effect of Water Temperature and Complex Water Matrices on Xanthate Adsorption Using Multiple Linear Regression. Minerals 2020, 10, 733. https://doi.org/10.3390/min10090733

AMA Style

Mhonde N, Schreithofer N, Corin K, Mäkelä M. Assessing the Combined Effect of Water Temperature and Complex Water Matrices on Xanthate Adsorption Using Multiple Linear Regression. Minerals. 2020; 10(9):733. https://doi.org/10.3390/min10090733

Chicago/Turabian Style

Mhonde, Ngoni; Schreithofer, Nora; Corin, Kirsten; Mäkelä, Mikko. 2020. "Assessing the Combined Effect of Water Temperature and Complex Water Matrices on Xanthate Adsorption Using Multiple Linear Regression" Minerals 10, no. 9: 733. https://doi.org/10.3390/min10090733

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