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The surface analytical techniques of X-ray Photoelectron Spectroscopy (XPS) and Time of Flight Secondary Ion Mass Spectroscopy (ToF-SIMS) have provided information on the type and concentration of… (More)
The effect of iron, substituted in the mineral lattice, on the froth flotation of sphalerite has been investigated at alkaline pH. It has been found that a critical copper sulphate concentration… (More)
Three methods of improving zinc concentrate grade in the flotation of two massive sulphide ores were investigated. These methods involve the use of oxygen gas conditioning, copper specific collectors… (More)
Abstract Galactomannans such as guar gum and locust bean gum are naturally occurring polysaccharides which have been widely used in various industries. One of the issues when dealing with these… (More)
Abstract Low molecular weight polyacrylamide (PAM) polymers were used to separate copper-activated sphalerite from pyrite in the presence of isobutyl xanthate (IBX). The effects of carboxyl,… (More)
Several methods were tested to selectively depress the flotation of pyrite in a chalcopyritepyrite mineral mixture in mildly alkaline pH conditions. They included the use of hydroxide ions (pH),… (More)