Next Article in Journal
Study on Selective Removal of Impurity Iron from Leached Copper-Bearing Solution Using a Chelating Resin
Next Article in Special Issue
Flotability Improvement of Ilmenite Using Attrition-Scrubbing as a Pretreatment Method
Previous Article in Journal
Nano-Tomography of Porous Geological Materials Using Focused Ion Beam-Scanning Electron Microscopy
Previous Article in Special Issue
The Flotation of Kyanite and Sillimanite with Sodium Oleate as the Collector
Article Menu

Export Article

Open AccessArticle
Minerals 2016, 6(4), 105; doi:10.3390/min6040105

Flotation of Chalcopyrite and Molybdenite in the Presence of Organics in Water

1
Oulu Mining School, University of Oulu, Oulu 90014, Finland
2
Future Industries Institute, University of South Australia, Mawson Lakes Campus, Adelaide, SA 5095, Australia
*
Author to whom correspondence should be addressed.
Academic Editor: Kostas A. Matis
Received: 8 September 2016 / Revised: 5 October 2016 / Accepted: 10 October 2016 / Published: 14 October 2016
(This article belongs to the Special Issue Flotation in Mineral Processing)
View Full-Text   |   Download PDF [1294 KB, uploaded 17 October 2016]   |  

Abstract

One of the water constituents that has not been investigated in great detail for potential detrimental effect on mineral flotation is organic matter. This study investigates the effect of natural organic materials contained in water, such as humic, fulvic and tannic acids, on the flotation of copper and molybdenum sulphides in alkaline conditions and in concentrations similar to those found in natural waters. Results show that copper and molybdenum grades decreased with the addition of humic, tannic and fulvic acid in that order, with a larger depression of molybdenite grade and recovery. Adsorption studies using ultraviolet (UV)-visible spectroscopy and X-ray photoelectron spectrometer (XPS) surface analysis confirmed that these organic materials were adsorbed on the minerals surface. Complimentary analyses of froth characteristics, particle size distribution and fine particles entrainment were also conducted to explain the cause of the negative effect of these organic materials on flotation. The flotation results were explained in terms of the decrease in the hydrophobicity of the mineral surfaces due to the adsorption of hydrophilic groups in these organic materials which then prevent bubble-particle adhesion. The larger detrimental effect of humic acid is due to its higher adsorption on the minerals, high molecular weight and carbon content compared with the other organic acids used. View Full-Text
Keywords: organic matter; sulphide minerals; adsorption; flotation organic matter; sulphide minerals; adsorption; flotation
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Sinche-Gonzalez, M.; Fornasiero, D.; Zanin, M. Flotation of Chalcopyrite and Molybdenite in the Presence of Organics in Water. Minerals 2016, 6, 105.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Minerals EISSN 2075-163X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top