Dithiophosphinate–pyrite interaction: Voltammetry and DRIFT spectroscopy investigations at oxidizing potentials

The depression of pyrite in selective flotation by different reagent systems – A Literature review

“…The dimer of dithiophosphinate (DTPI) 2 was also identified on pyrite surface at oxidizing potentials. The adsorption of DTPI exhibits high performance in acid solution and decreases sharply under neutral and alkaline conditions due to heavy surface oxidation at higher pH (Güler, 2005). Dithiophosphinate is mainly recommended to float lead, copper and precious metals from minerals containing high levels of pyrite.…”

A comparative evaluation of the response of platinum and mineral electrodes in sulfide mineral pulps

“…However, in alkaline conditions, due to the formation of stable ferric species on pyrite electrode (Conway et al, 1980;Chander and Briceno, 1987;Güler, 2005), the potentials of metal and mineral electrodes depart from each other.…”

“…To measure the pulp potential, the noble metal (Pt, Au), mineral and glasscarbon electrodes have been used, but the use of Pt and mineral electrodes are more common (Natarajan and Iwasaki, 1973a,b;Pomianowski and Czarnecki, 1974;Rand and Woods, 1984;Labonté and Finch, 1990;Lázaro et al, 1995;Nicol and Lázaro, 2002). Sulfide ion selective electrodes are commonly used in the sulfidization of base metal oxidized ores (Zhou and Chander, 1989, 2005.…”

Adsorption thermodynamics and kinetics of N , N ′-diisopropoxypropyl- N ″, N ‴-oxydiethylenedicarbonyl bis (thiourea) on chalcopyrite surfaces

“…The adsorption mechanism of a collector to mineral surfaces plays a key role in hydrometallurgy for recovery and concentration of valuable minerals [16][17][18][19][20]. Based on adsorption thermodynamics and kinetics investigated, it may elucidate the selective response of a collector to a given metal mineral, understand their interaction principle, and offer essential information for design of new collectors with better hydrometallurgical performances.…”