Hydrophobicity of chalcopyrite with dithiophosphate and dithiophosphinate in electrochemically controlled condition

Voltammetric and drift spectroscopy investigation in dithiophosphinate–chalcopyrite system

“…Güler [24] attributed this to higher and faster surface coverage at lower pH values. In addition, this behavior was also related to the surface composition of chalcopyrite in different buffer solutions such that increase in the activity of metal oxyhydroxides at higher pH values reduced the collector adsorption on mineral surface [27][28][29].…”

“…Before spectroscopic analysis, the finely ground chalcopyrite sample was polarized at 400 mV with 1.0 × 10 −1 M DTPI for 15 min. The polarization potential was applied as 400 mV in reference to the observed potentials in both floatability [24] and hydrophobicity [29] investigations performed by chalcopyrite from the same source. A-E region IR bands could almost be distinguished on the spectra, indicating the adsorption of collector species on the mineral surface.…”

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

“…The presence of broad IR peaks at 598 and 510 cm −1 suggested that (DTPI) 2 and/or DTPI • formed on pyrite surfaces at pH 9.2 and pH 11, but major surface compounds are Fe oxyhydroxides. There is always a competition between the adsorption of hydrophobic collector species and hydrophilic metal oxyhydroxides, and stability of these hydrophilic species increases at higher Eh and pH [21,22]. Fig.…”

Refrakter Olmayan Sülfürlü Altin–gümüş Cevheri̇ni̇n Flotasyon Davranişinin İncelenmesi̇

“…Aynı yapıda olan dithiofosfinlerin ve dithiofosfatların bazı özellikleri farklıdır. Aerophine 3418 A'nın metal kompleksleri daha kararlıdır ve yüzdürebilme kapasitesi Aero 208'den yüksektir [12,18,19]. Aero 208, bazı sülfürlü cevherlerden selektif olarak altın kazanımında etkilidir [9,20].…”