Treatment of copper converter slag with deep eutectic solvent as green chemical
Yükleniyor...
Tarih
2021
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Industrial copper slag is among the most important wastes to be evaluated in terms of containing valuable metals and the amount of waste approaching 30 million tons per year. Therefore, in this study, it was aimed to propose a feasible route for copper and zinc recovery from copper converter slag (CCS) by using choline chloride (ChCl) based deep eutectic solvent which is applied on this type of slag for the first time. During the leaching experiments with the pure ChCl-2urea mixture, temperature (25–95 °C), leaching duration (2–72 h), and pulp density (1/10–1/40 g/mL) were selected as the parameters to be investigated for Cu and Zn extraction. After the experimental results, the optimized conditions for the ChCl-2urea leaching process, which gave 89.9% Cu and 65.3% Zn extraction was found at 48 h, 95 °C, 1/20 g/mL pulp density with 600 rpm stirring speed. It is noted that the iron dissolution ratio is very low (max. 4.7%) under the selected conditions. At the end of the iron cementation stage, the total recovery efficiency as a pure metallic copper was 63%. The calculated activation energy for the dissolution of the copper and zinc from CCS is 8.86 kJ mol−1 and 14.48 kJ mol−1, respectively.
Açıklama
WOS:000685554100007
Anahtar Kelimeler
Slag, Leaching, Metal Recovery, Deep Eutectic Solvents, Kinetic, Hydrometallurgy
Kaynak
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
132
Sayı
Künye
Topçu, M. A., Rüşen, A., Küçük, Ö. (2021). Treatment of copper converter slag with deep eutectic solvent as green chemical. Waste Management, 132, 64-73.
