Assessing the combined effect of water temperature and complex water matrices on xanthate adsorption using multiple linear regression

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Journal Title

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Volume Title

A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Date

2020-09

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Mcode

Degree programme

Language

en

Pages

18
1-18

Series

Minerals, Volume 10, issue 9

Abstract

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.

Description

| openaire: EC/H2020/730480/EU//ITERAMS

Keywords

Adsorption, Chalcopyrite, Multiple linear regression, Passivation, Pentlandite, Temperature

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Citation

Mhonde, N, Schreithofer, N, Corin, K & Mäkelä, M 2020, ' Assessing the combined effect of water temperature and complex water matrices on xanthate adsorption using multiple linear regression ', Minerals, vol. 10, no. 9, 733, pp. 1-18 . https://doi.org/10.3390/min10090733