PDF

Chalcopyrite Leaching in a Dimethyl Sulfoxide Solution Containing Copper Chloride

Kota Takatori, Hidekazu Kato

2021enchalcopyriteleachingcopperDMSOgold

Abstract

Language:

Chalcopyrite (CuFeS2) is recognized as the most refractory copper mineral when processed in conventional sulfate media leaching systems. This study investigates the efficacy of using a dimethyl sulfoxide (DMSO) solution combined with copper chloride (CuCl2) for the leaching of chalcopyrite. Leaching experiments were conducted on a copper concentrate predominantly composed of chalcopyrite under ambient pressure, with temperatures ranging from 313 to 413 K. The resulting leaching fractions of copper (Cu), iron (Fe), sulfur (S), gold (Au), and arsenic (As) were examined. Findings indicate that 90% of copper was extracted within 2 hours, and 94% within 4 hours at 373 K, demonstrating competitive efficiency compared to traditional processes. The DMSO solution with CuCl2 selectively dissolved the valuable metals Cu and Au from chalcopyrite, while leaving economically less valuable minerals, such as pyrite (FeS2) and As, in the residue. Additionally, it was observed that chalcopyrite oxidation proceeds in direct proportion to the stoichiometric ratio of Cu in the concentrate to the initial cupric ions in the DMSO solution, which is further enhanced by the presence of oxygen at temperatures below 373 K.

Download

Cite This Work

@article{fe673c43-5d90-4b17-9861-82f52e30f721,
  title={Chalcopyrite Leaching in a Dimethyl Sulfoxide Solution Containing Copper Chloride},
  author={Kota Takatori and Hidekazu Kato},
  year={2021},
  language={en}
}
TY  - JOUR
TI  - Chalcopyrite Leaching in a Dimethyl Sulfoxide Solution Containing Copper Chloride
AU  - Kota Takatori
AU  - Hidekazu Kato
PY  - 2021
LA  - en
ER  -

Similar Items

Towards industrial implementation of glycine-based leach and adsorption technologies for gold-copper ores

J. J. Eksteen, E. A. Oraby

The technology to selectively leach gold, silver and base metals from ores, concentrates, and wastes, using an alkaline glycine solution, has initiat

2017enPDF

Study on the influence of various factors in the hydrometallurgical processing of waste printed circuit boards for copper and gold recovery

Ionela Birloaga, Ida De Michelis, Francesco Ferella, Mihai Buzatu, Francesco Vegliò

This study investigates the hydrometallurgical recovery of copper and gold from waste printed circuit boards (WPCBs) using a sequential oxidative leac

2013enPDF

Treatment of manufacturing scrap TV boar

The leachability tests for manufacturing scrap TV boards (STVB) have indicated the release of metals beyond the limit levels with potential problems f

2026enPDF

Effect of Roasting Temperature for Copper Leaching of Sulfide Concentrate by Combined Methods

Introduction Concerns over air pollution and the environmental problem of acid rain have made governments all over the world tighten their regulations

2023enPDF

Optimization of sulfuric acid leaching of roasted chalcopyrite concentrate with Box–Wilson experimental design

İbrahim Sönmez, Kemal Şahbudak

Chalcopyrite (CuFeS2) is commonly used ore in the production of copper, but leaching of this ore is very slow and inefficient due to “passivation” dur

2020enPDF

Comparative study for leaching processes of uranium, copper and cadmium from gibbsite ore material of Talet Seleim, Southwestern, Sinai, Egypt

Walaa A. Kassab

In this paper, leaching characteristics are presented, and a cost-effective process for extracting uranium, copper, and cadmium from Talet Seleim’s Gi

2022enPDF