Optimising regrinding chemistry

by Xiangfei Ye

Institution: University of South Australia
Degree: PhD
Year: 2010
Keywords: Flotation reagents; Surface chemistry; Sulfide minerals
Record ID: 1037366
Full text PDF: http://itupl-ura1.ml.unisa.edu.au:80/R/?func=dbin-jump-full&object_id=unisa46168


The chemistry during regrinding is critical to flotation. It has significant effects on mineral surface properties and can lead to different mineral floatabilities. This research seeks to quantify contributing factors to changes in mineral flotation behavior with grinding and regrinding. The influence of the particle breakage mechanism on mineral floatability is also investigated. In this research, sulphide mineral surface species and hydrophobicity were analyzed by a range of techniques, including X-ray photoelectron spectroscopy (XPS), surface area measurement (BET), ethylene diamine-tetra acid (EDTA) extraction and contact angle measurements.