Reductive Leaching Process and Mechanisms of Cadmium from Cadmium-Bearing Zinc Ferrite using Sulfur Dioxide

• Autorzy: Zhang Chun , Deng Yumei

Identyfikatory

DOI

10.24425/amm.2024.150916

• Języki publikacji: EN

Abstrakty

EN

Cadmium-bearing zinc ferrite (CBZF) is an unavoidable product in zinc smelting industry during the roasting stage for high cadmium-containing zinc concentrate. In this work, the influences of temperature, initial sulfuric acid concentration and partial pressure of sulfur dioxide on cadmium leaching were investigated. The results showed that an increase of temperature, sulfuric acid concentration and partial pressure of sulfur dioxide significantly enhanced the cadmium leaching efficiency. The maximum leaching efficiency of cadmium reached 99.2% at the temperature of 85°C, the initial sulfuric acid concentration of 80 g/L and the partial pressure of sulfur dioxide of 200 kPa. H⁺ played a key role during the reductive decomposition process of CBZF. The probable reaction mechanisms and the diagrammatic sketch were presented.

Słowa kluczowe

EN

cadmium-bearing zinc ferrite; reductive leaching; mechanisms

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2024
• Tom: Vol. 69, iss. 3
• Strony: 965--971
• Opis fizyczny: Bibliogr. 27 poz., fot., rys., tab., wzory

Twórcy

autor

Zhang Chun

• Hunan City University, School of Municipal and Mapping Engineering, 413000, Yiyang Hunan, China

• https://orcid.org/0000-0001-8602-5951

autor

Deng Yumei

• Hunan City University, School of Municipal and Mapping Engineering, 413000, Yiyang Hunan, China

• https://orcid.org/0009-0004-7481-8179

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Uwagi

This work was financially supported by the Natural Science Foundation of Hunan Province (2021JJ30081) and the Science and technology program of education department of Hunan province (20C0343).