Eco-friendly alternative to cyanide
A highly selective depressant for pyrite in chalcopyrite-pyrite separation, effective at neutral and alkaline pH with environmental benefits.
Sun, Da · Li, Maolin · Zhang, Ming · Cui, Rui · Ye, Linfeng · Wang, Daowei · Yao, Wei
ACS Omega 2023
Selectively depresses pyrite at neutral or alkaline pH
Strong adsorption on pyrite but minor adsorption on chalcopyrite
More FeOOH and Fe2(SO4)3 generated on pyrite surface enhance tannic acid chemical adsorption
After tannic acid adsorption, xanthate still adsorbs significantly on chalcopyrite but not on pyrite