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Pyrite surface oxidation plays an important role in several mineral processing and hydrometallurgical systems. The initial oxidation takes place very quickly and affects the surface characteristics of pyrite greatly. Contact angles under different atmospheres were measured to quantify the oxidation kinetics of pyrites from various sources. The contact angle of water droplet on pyrite in air was found...
The effects of the surface and solution chemistry of the Fe(II) and Fe(III) ions on the flotation of both ore- and coal-pyrite with xanthate have been systematically investigated based on flotation results, zeta potential measurements and thermodynamic calculations. It was found that the presence of ferrous and ferric ions in solution significantly depresses ore-pyrite flotation in the pH range of...
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