Separation of chalcopyrite and pyrite from a copper tailing by ammonium humate

Cuicui Lü; Yongliang Wang; Peng Qian; Ya Liu; Guoyan Fu; Jian Ding; Shufeng Ye; Yuanfa Chen

doi:10.1016/j.cjche.2018.02.014

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Separation of chalcopyrite and pyrite from a copper tailing by ammonium humate

Separation Science and Engineering | Updated：2026-01-06

- Separation of chalcopyrite and pyrite from a copper tailing by ammonium humate
- Chinese Journal of Chemical Engineering Vol. 26, Issue 9, Pages: 1814-1821(2018)
- Affiliations：
  
  2 University of Chinese Academy of Sciences,Beijing,China,100049
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2018.02.014
  CLC：
- Published：2018
- Accepted：
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Cuicui Lü, Yongliang Wang, Peng Qian, Ya Liu, Guoyan Fu, Jian Ding, Shufeng Ye, Yuanfa Chen. Separation of chalcopyrite and pyrite from a copper tailing by ammonium humate[J]. Chin.J.Chem.Eng., 2018, 26(9): 1814-1821.
DOI：

Cuicui Lü, Yongliang Wang, Peng Qian, Ya Liu, Guoyan Fu, Jian Ding, Shufeng Ye, Yuanfa Chen. Separation of chalcopyrite and pyrite from a copper tailing by ammonium humate[J]. Chin.J.Chem.Eng., 2018, 26(9): 1814-1821. DOI： 10.1016/j.cjche.2018.02.014.

摘要

Abstract

Copper tailings constitute a large proportion of mine wastes. Some of the copper tailings can be recycled to recover valuable minerals. In this paper

a copper tailing was studied through the chemical analysis method

X-ray diffraction and scanning electron microscope-energy dispersive spectrum. It turned out that chalcopyrite (Cu) and pyrite (S) were the main recoverable minerals in the tailing. In order to separate chalcopyrite from pyrite in low pulp pH

ammonium humate (AH) was singled out as the effective regulator. The depression mechanism of AH on the flotation of pyrite was proved by FTIR spectrum and XPS spectrum

demonstrating that there was a chemical adsorption between AH and pyrite. By Response Surface Methodology (RSM)

the interaction between AH

pulp pH and iso-butyl ethionine (Z200) was discussed. It was illustrated that the optimal dosage of AH was 1678 g·t

-1

involving both the recovery of Cu and S. The point prediction by RSM and the closed-circuit flotation displayed that the qualified Cu concentrate and S concentrate could be obtained from the copper tailing. The study indicated that AH was a promising pyrite depressor in the low pulp pH from copper tailings.

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