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Study on recovery of iron and sulfur from high-sulfur magnetite ore

Yongqiang Zhao, Wen-tao Zhou

2022eniron recoverysulfur recoverymagnetite oreflotationseparation

Abstract

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In this paper, we investigate methods to produce a saleable magnetite concentrate with a sulfur level below 0.20% and recover sulfur concentrate from high-sulfur magnetite ore. The objective is achieved through flotation and magnetic separation tests. The study establishes optimum flotation conditions, which include a grinding fineness of 90% particles passing 0.074mm, a pH of 6, and the addition of 400 g/t of CuSO4 along with 400 g/t of combined collectors. The results demonstrate that under these conditions, the sulfur grade of the magnetite concentrate is reduced from 3.20% to 0.18%, while the iron grade is enhanced from 57.29% to 71.17%. Additionally, a sulfur concentrate with a sulfur grade of 38.05% and a recovery of 91.32% is produced. X-ray photoelectron spectroscopy (XPS) analysis reveals that CuSO4 aids the formation of hydrophobic Sn2-/S0 and Cu+-xanthate, which significantly improves pyrrhotite floatability. This study highlights the enhanced separation efficiency using a mixture of collectors, resulting in improved sulfur recovery and the adsorption behavior of collectors, along with increased hydrophobicity of the pyrrhotite surface.

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Cite This Work

@article{2fee2408-cda8-4960-b3df-c823ab3ec452,
  title={Study on recovery of iron and sulfur from high-sulfur magnetite ore},
  author={Yongqiang Zhao and Wen-tao Zhou},
  year={2022},
  language={en}
}
TY  - JOUR
TI  - Study on recovery of iron and sulfur from high-sulfur magnetite ore
AU  - Yongqiang Zhao
AU  - Wen-tao Zhou
PY  - 2022
LA  - en
ER  -

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