Reveals how S improves pyrite flotation recovery by altering metal ion states, indicating potential benefits for sulfide ore processing.
S mitigated the depressive effect on pyrite flotation by reducing Fe(III) to Fe(II) and precipitating Fe(II) as FeS, which restored the hydrophobicity of pyrite and elevated the flotation recovery to 72.73%. This work clarifies the intrinsic role of Fe(III)-xanthate complexes in pyrite flotation depression and provides reference for other sulfide ore flotation.
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Zhao et al. (2026) studied this question.
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