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An environmental challenge in the mineral flotation process is avoiding the use of cyanide to depress undesirable gangue species, such as pyritePyrite. Therefore, this research focuses on determining the influence of different pH values and quantities of the depressant sodium thioglycolateThioglycolate (TG) C2H3NO2S on the performance of collectorless flotationCollectorless flotation of FeS2. The results indicate that TG depresses iron disulfide at all tested pHs (6.3, 7.3 and 10.0) and concentrations used (0.25, 0.5, 1.0, and 1.5 g/L TG) and pulp potentials around +0.104 V. and 0.24 V. However, at a more alkaline pH (10.0), TG consumption to obtain 17.3% w/w cumulative pyritePyrite flotation at 0.25 g/L is considerably lower than that required (1.5 g/L) at slightly acidic pH (6.3) to achieve 15.7% w/w pyritePyrite flotation.

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Analysis of FeS2 Depression by Thioglycolate (C2H3NO2S) During Collectorless Flotation

  • 会议论文

  • 发表日期：

    2026年

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  • Hector Iván Hernández Jímenez,
  • Martín Reyes Pérez,
  • Iván A. Reyes Domínguez,
  • Dayli Yamilet Tolentino Mendoza,
  • Mishelle Miroslava Sánchez Acosta,
  • Mizraim U. Flores Guerrero,
  • Miguel Pérez Labra,
  • Julio Cesar Juárez Tapia,
  • Francisco Raúl Barrientos Hernández

摘要

An environmental challenge in the mineral flotation process is avoiding the use of cyanide to depress undesirable gangue species, such as pyritePyrite. Therefore, this research focuses on determining the influence of different pH values and quantities of the depressant sodium thioglycolateThioglycolate (TG) C2H3NO2S on the performance of collectorless flotationCollectorless flotation of FeS2. The results indicate that TG depresses iron disulfide at all tested pHs (6.3, 7.3 and 10.0) and concentrations used (0.25, 0.5, 1.0, and 1.5 g/L TG) and pulp potentials around +0.104 V. and 0.24 V. However, at a more alkaline pH (10.0), TG consumption to obtain 17.3% w/w cumulative pyritePyrite flotation at 0.25 g/L is considerably lower than that required (1.5 g/L) at slightly acidic pH (6.3) to achieve 15.7% w/w pyritePyrite flotation.