Extraction of Copper from Copper-Bearing Materials by Sulfation Roasting with SO2-O2 Gas

Xingbang Wan, Junjie Shi*, Pekka Taskinen, Ari Jokilaakso

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

1 Sitaatiot (Scopus)
39 Lataukset (Pure)

Abstrakti

Recycling metals from secondary materials and more complex ores has recently been attracting more attention, creating a need for more precise separation methods of different elements. This study proposed a sulfation-roasting method and designed thermodynamic conditions to selectively facilitate the formation of copper sulfate while separating iron as oxide.The roasting behaviors for chalcopyrite, copper slag, and pure copper compounds were investigated in a 0.5% SO2–0.5% O2–99% Ar atmosphere at 600°C. X-ray fluorescence spectroscopy, x-ray diffractometry, scanning electron microscopy, and energy dispersive x-ray spectrometry were used to characterize the raw materials and roasting products.The proposed methodology was confirmed for a complete separation of Cu from Fe, and, further, the sulfation-roasting mechanism of chalcopyrite was confirmed by thermodynamic calculations and experimental observations. These will provide a theoretical basis for copper recycling from both complex primary and secondary copper-bearing materials.

AlkuperäiskieliEnglanti
Sivut3436-3446
Sivumäärä11
JulkaisuJOM
Vuosikerta72
Numero10
Varhainen verkossa julkaisun päivämäärä11 elokuuta 2020
DOI - pysyväislinkit
TilaJulkaistu - 1 lokakuuta 2020
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

Sormenjälki

Sukella tutkimusaiheisiin 'Extraction of Copper from Copper-Bearing Materials by Sulfation Roasting with SO2-O2 Gas'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

Siteeraa tätä