Journal ArticleDOI
A review of the structure, and fundamental mechanisms and kinetics of the leaching of chalcopyrite.
TLDR
There is general agreement in the literature that chalcopyrite leaching is significantly affected by solution redox potential with an optimum E(h) range suggesting the participation of leach steps that involve both oxidation and reduction.About:
This article is published in Advances in Colloid and Interface Science.The article was published on 2013-09-01. It has received 338 citations till now. The article focuses on the topics: Chalcopyrite & Leaching (metallurgy).read more
Citations
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Journal ArticleDOI
Kinetics of oxidative degradation/mineralization pathways of the antibiotic tetracycline by the novel heterogeneous electro-Fenton process with solid catalyst chalcopyrite
Natija Barhoumi,Natija Barhoumi,Hugo Olvera-Vargas,Nihal Oturan,David Huguenot,Abdellatif Gadri,Salah Ammar,Enric Brillas,Mehmet A. Oturan +8 more
TL;DR: In this article, the degradation of solutions of the antibiotic tetracycline (TC) has been studied by a novel electrochemical advanced oxidation process, consisting in electro-Fenton (EF) process using chalcopyrite as heterogeneous catalyst.
Journal ArticleDOI
Chalcopyrite hydrometallurgy at atmospheric pressure: 1. Review of acidic sulfate, sulfate–chloride and sulfate–nitrate process options
TL;DR: In this paper, the authors present a review of current knowledge in respect of sulfate-sulfuric acid systems and highlight potentially rewarding areas for future research, including the potential to exploit alternative oxidants to ferric ion.
Journal ArticleDOI
Current scenario of chalcopyrite bioleaching: a review on the recent advances to its heap-leach technology.
TL;DR: Advances in the designing of heap bioleaching plant along with microbial and environmental factors of importance have been reviewed with conclusions into the future prospects of chalcopyriteBioleaching.
Journal ArticleDOI
A Review of the Occurrence and Promising Recovery Methods of Rare Earth Elements from Coal and Coal By-Products
TL;DR: In this article, a review of the abundance, mode of occurrence, and recovery methods of rare earth elements in coal and coal by-products is provided along with issues associated with their use with coal resources.
Journal ArticleDOI
Heap Leaching Technology—Current State, Innovations, and Future Directions: A Review
TL;DR: Heap leaching is a well-established extractive metallurgical technology enabling the economical processing of various kinds of low-grade ores, which could not otherwise be exploited as mentioned in this paper.
References
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Journal ArticleDOI
X-ray photoelectron spectroscopic study of copper minerals
TL;DR: The valence states of Cu and S atoms have been studied by XPS for 25 samples of copper minerals as mentioned in this paper, and the Cu atoms are found to be monovalent in the following sulfides: CuS, CuCo 2 S 4, Cu 3 (Ge, Fe) (S, As) 4, CuFeS 2, CuFe 2 S 3, Cu 2 FeSnS 4, etc.
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An electrochemical investigation of the natural flotability of chalcopyrite
J.R. Gardner,Ronald Woods +1 more
TL;DR: In this article, a modified Hallimond tube cell was used for chalcopyrite flotation, in which the potential at the mineral-solution interface was controlled potentiostatically.
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The structure of amorphous copper sulfide precipitates: An X-ray absorption study
Richard A. D. Pattrick,J. F. W. Mosselmans,John M. Charnock,K.E.R. England,George R. Helz,C D Garner,David J. Vaughan +6 more
TL;DR: X-ray absorption and X-ray photoelectron spectroscopy (XPS) analysis of copper sulfide precipitated from aqueous solution at ambient temperatures reveals the existence of a metastable primitive structure that ages to a structure with the characteristics of amorphous covellite as discussed by the authors.
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The role of iron-hydroxy precipitates in the passivation of chalcopyrite during bioleaching
TL;DR: In this article, the authors investigated the bioleaching of chalcopyrite in an acidic sulphate nutrient medium using Sulfobacillus thermosulfidooxidans, a moderately thermophilic iron-and sulphur oxidising bacterium.
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The crystal structure refinement of chalcopyrite, CuFeS2
S. R. Hall,J. M. Stewart +1 more
TL;DR: The crystal structure of chalcopyrite, CuFeS2, has been refined to an R value of 0.031 using multiple sets of 4-circle diffractometer data and full-matrix least-squares procedures.