Thermochemical Route for Extraction and Recycling of Critical, Strategic and High Value Elements from By-Products and End-of-Life Materials, Part I: Treatment of a Copper By-Product in Air Atmosphere - Université de Lorraine Accéder directement au contenu
Article Dans Une Revue Materials Année : 2019

Thermochemical Route for Extraction and Recycling of Critical, Strategic and High Value Elements from By-Products and End-of-Life Materials, Part I: Treatment of a Copper By-Product in Air Atmosphere

Ndue Kanari
  • Fonction : Auteur
  • PersonId : 1000077
Eric Allain
  • Fonction : Auteur
  • PersonId : 780814
  • IdRef : 192204300
Seit Shallari
  • Fonction : Auteur
Frédéric Diot
  • Fonction : Auteur
Sebastien Diliberto
Fabrice Patisson
Jacques Yvon
  • Fonction : Auteur

Résumé

Development of our modern society requests a number of critical and strategic elements (platinum group metals, In, Ga, Ge. . .) and high value added elements (Au, Ag, Se, Te, Ni. . .) which are often concentrated in by-products during the extraction of base metals (Cu, Pb, Zn. . .). Further, recycling of end-of-life materials employed in high technology, renewable energy and transport by conventional extractive processes also leads to the concentration of such chemical elements and their compounds in metallurgical by-products and/or co-products. One of these materials, copper anode slime (CAS), derived from a copper electrolytic refining factory, was used for this study. The sample was subjected to isothermal treatment from 225 to 770 • C under air atmosphere and the reaction products were systematically analyzed by scanning electron microscopy through energy dispersive spectroscopy (SEM-EDS) and X-ray diffraction (XRD) to investigate the thermal behavior of the treated sample. The main components of the anode slime (CuAgSe, Cu 2-x Se y S 1-y , Ag 3 AuSe 2) react with oxygen, producing mostly copper and selenium oxides as well as Ag-Au alloys as final products at temperatures higher than 500 • C. Selenium dioxide (SeO 2) is volatilized and recovered in pure state by cooling the gaseous phase, whilst copper(II) oxide, silver, gold and tellurium remain in the treatment residue.
Fichier principal
Vignette du fichier
materials-12-01625.pdf (6.72 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-02167649 , version 1 (28-06-2019)

Identifiants

Citer

Ndue Kanari, Eric Allain, Seit Shallari, Frédéric Diot, Sebastien Diliberto, et al.. Thermochemical Route for Extraction and Recycling of Critical, Strategic and High Value Elements from By-Products and End-of-Life Materials, Part I: Treatment of a Copper By-Product in Air Atmosphere. Materials, 2019, 12 (10), pp.1625. ⟨10.3390/ma12101625⟩. ⟨hal-02167649⟩
72 Consultations
99 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More