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Minerals & Metallurgical Processing

, Volume 34, Issue 2, pp 76–83 | Cite as

Production of chalcocite by selective chlorination of chalcopyrite using cuprous chloride

  • J. KangEmail author
  • J. Y. Lee
Special Review Article

Abstract

A selective chlorination process using cuprous chloride (CuCl) was investigated for producing high-grade chalcocite (Cu2S) from chalcopyrite (CuFeS2) feed. The chalcopyrite feed was reacted with CuCl in the presence or absence of sulfur (S) at temperatures between 900 and 1,100 K for five hours under an argon gas atmosphere. The experimental results indicate that iron (Fe) was selectively removed from the chalcopyrite feed as ferrous chloride (FeCl2) at 1,100 K and the mass percentage of Fe thus decreased from 31.5 percent in the feed to less than 0.05 percent in the residue, under certain conditions. As a result, high-grade Cu2S was obtained from chalcopyrite in a single step. This new selective chlorination of chalcopyrite using CuCl as a chlorinating agent is therefore feasible for producing high-grade Cu2S.

Key words

Chalcopyrite Cuprous chloride Chalcocite Selective chlorination Iron removal 

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Copyright information

© The Society for Mining, Metallurgy & Exploration 2017

Authors and Affiliations

  1. 1.Strategic Minerals Utilization Research DepartmentKorea Institute of Geoscience and Mineral ResourcesDaejeonKorea
  2. 2.Department of Resources RecyclingUniversity of Science and TechnologyDaejeonKorea

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