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<p>This work presents and compares individual flotation kinetics of galena (PbS), cerussite (PbCO<sub>3</sub>), anglesite (PbSO<sub>4</sub>), and pyrite (FeS<sub>2</sub>), using benzohydroxamic acid (BHA) and octanohydroxamic acid (OHA) as alternative collectors to xanthate. This knowledge allowed to make predictions about the direct flotation behavior of a mixture of galena (8%), cerussite (3%), anglesite (4%), pyrite (15%), and quartz (70%), to find the Recovery vs. Time and Grade vs. Recovery curves, which gave a preliminary insight into the simultaneous flotation of the three lead minerals and two of the gangue minerals that commonly accompany them. Calculations performed on the mineral mixture showed that the highest lead recovery (89%) was obtained when using OHA at pH 8. However, the lead concentrate grade was only 37%. On the other hand, lead recovery of around 78% was obtained when using BHA as collector at pH 8, the concentrate grade improved to 61% under this condition.</p> Graphical abstract <p></p>

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Analysis of kinetic parameters to evaluate the simultaneous and direct flotation of galena, cerussite and anglesite using hydroxamic acids as alternative collectors to xanthate

  • 期刊论文

  • 发表日期：

    2025年12月24日

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  • Simon Bello-Teodoro,
  • Martha Araceli Elizondo-Álvarez,
  • Isis Merneith Esparza-Escobedo,
  • Sandra Daniela Ojeda-Villegas,
  • Mario Alberto Corona-Arroyo,
  • Elvia Angélica Sánchez-Ramírez,
  • Paula Cristina Santos-Munguía

摘要

This work presents and compares individual flotation kinetics of galena (PbS), cerussite (PbCO3), anglesite (PbSO4), and pyrite (FeS2), using benzohydroxamic acid (BHA) and octanohydroxamic acid (OHA) as alternative collectors to xanthate. This knowledge allowed to make predictions about the direct flotation behavior of a mixture of galena (8%), cerussite (3%), anglesite (4%), pyrite (15%), and quartz (70%), to find the Recovery vs. Time and Grade vs. Recovery curves, which gave a preliminary insight into the simultaneous flotation of the three lead minerals and two of the gangue minerals that commonly accompany them. Calculations performed on the mineral mixture showed that the highest lead recovery (89%) was obtained when using OHA at pH 8. However, the lead concentrate grade was only 37%. On the other hand, lead recovery of around 78% was obtained when using BHA as collector at pH 8, the concentrate grade improved to 61% under this condition.

Graphical abstract