skip to main content
Language:
Search Limited to: Search Limited to: Resource type Show Results with: Show Results with: Search type Index

The Electrochemical Response of Chalcopyrite and Galena to Degrading Water Quality

Minerals (Basel), 2022-11, Vol.12 (11), p.1476 [Peer Reviewed Journal]

2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 2075-163X ;EISSN: 2075-163X ;DOI: 10.3390/min12111476

Full text available

Citations Cited by
  • Title:
    The Electrochemical Response of Chalcopyrite and Galena to Degrading Water Quality
  • Author: Ndamase, Nolihle ; Tadie, Margreth ; Corin, Kirsten Claire
  • Subjects: Adsorption ; Calcium ions ; Chalcopyrite ; Circuits ; Collectors ; Contaminants ; Copper ; Degradation ; Effluents ; electrochemical adsorption ; Electrochemistry ; Electrodes ; Flotation ; flotation water quality ; Hydrogen bonds ; Hydrophobicity ; Ions ; Laboratories ; Lead ; Magnesium ; Materials recovery ; Microflotation ; mineral rest potential ; Minerals ; Mining ; Oxidation ; Pollutant removal ; Process water ; Pulp ; Recipes ; Salt ; Water chemistry ; Water quality ; Water reuse ; xanthate collectors
  • Is Part Of: Minerals (Basel), 2022-11, Vol.12 (11), p.1476
  • Description: Water is used as a liquid medium as well as a means of transportation during mining operations. Flotation, in particular, is a water intensive process where water makes up about 80–85% of the pulp phase. Process water contains organic and inorganic species which accumulate as they are recycled. To avoid the treatment costs of removing these contaminants, many mining operations allow the quality of their water to degrade over time. When this water is introduced into flotation circuits, the pulp chemistry is altered. Ionic species that accumulate in recycled process water have been shown by previous studies to be especially deleterious to flotation performance. Such ions include Ca2+, Cu2+, Mg2+, Pb2+, SO42− and S2O32−, amongst others. The flotation sub-process of collector adsorption which is responsible for inducing hydrophobicity on valuable mineral surfaces may be influenced by water chemistry. Accumulating ionic species have been shown to hinder collector adsorption which may reduce recovery of valuable minerals to the concentrate. Consequently, degrading water quality may threaten the economic viability of mining operations that make use of closed water circuits. Electrochemical techniques such as mineral rest potentials can be used to monitor the impact of changing water quality on collector–mineral interactions. Microflotation was used to determine whether mineral floatability was affected by changing water quality. This study therefore aimed to investigate whether electrochemical techniques such as rest potential measurements can be used to predict flotation performance under changing water quality. No definable relationship was found between the rest potential differences and the microflotation initial recoveries, however, rest potential measurements did identify the negative impact that thiosulphate ions may have on flotation processes.
  • Publisher: Basel: MDPI AG
  • Language: English
  • Identifier: ISSN: 2075-163X
    EISSN: 2075-163X
    DOI: 10.3390/min12111476
  • Source: Alma/SFX Local Collection
    ROAD: Directory of Open Access Scholarly Resources
    ProQuest Central
    DOAJ Directory of Open Access Journals
Back to results list
INSPIRE LIBRARY - TON DUC THANG UNIVERSITY (84-028) 37 755 057 Feedback
19 Nguyen Huu Tho St. Dist.7, HCM thuvien@tdtu.edu.vn

Copyright © 2017 INSPIRE LIBRARY - TON DUC THANG UNIVERSITY

Searching Remote Databases, Please Wait