High intensity conditioning and the carrier flotation of gold fine particles

Flotation in a novel oscillatory baffled column

“…An added complication to the analysis however is that one cannot discount the possibility of agglomeration of these particles with larger particles in feed during the (Valderrama & Rubio, 1999). Larger particles would be less susceptible to this effect since their surface charge per unit mass is significantly less.…”

Challenges and opportunities in the recovery/rejection of trace elements in copper flotation-a review

“…Notwithstanding this constraint, few physical methods have been used in the industry for cleaning surface contaminants. These are cycloning (Bushell, 1970;Broekman et al, 1987) and high-intensity attritioning (Duchen and Carter, 1986;Valderrama and Rubio, 1998;Allan and Woodcock, 2001). A similar observation was made by Agorhom et al (2012a) where cyclone separation of regrind mill discharge appears to perform surface cleaning of gold particles by exposing previously-obscured silver signals on gold particles after EDX analysis.…”

Removal of Trace Impurity from Limestone Using Flotation Techniques

“…It has been widely reported that carrier flotation is effective to remove fine particles in small amounts 15) with coal, 16) anatase, 17) and gold. 18) In the carrier flotation, a low-grade limestone with 0.15 mass% impurities and of 106-149 mm particle size was used as the carrier, because the low-grade limestone is easily obtained in situ and the carrier/impurity mixture recovered by the flotation can be expected to find usage in cement production.…”