Study on Separation Technology of Lead and Silver from Bulk Concentrate

Abstract:

A laboratory-scale method for treating bulk concentrate for reclaiming lead and silver was developed utilizing new hydrometallurgical technology as an alternative to the traditional pyrometallurgical processing. The condition experiments of every chief segment in the whole flowsheet have been systematically investigated, and then the whole hydrometallurgical processing flowsheet was determined. The main contents are followed as: Bulk concentrate was treated using pressure leaching in autoclave, the optimal leaching conditions were determined. The elemental sulphur was deprived from the pressure leaching residue using flotation-distillation. Carbonate conversion -silicofluoric acid leaching on flotation gangue containing lead sulfate using hydrometallurgy was carried. And Leaching silver using thiourea from the residue was carried after extracting lead. Through the whole hydrometallurgy flowsheet, the reclaiming of lead and silver was actualized.

• Periodical: Advanced Materials Research (Volumes 396-398)
• Pages: 13-17
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.396-398.13
• Online since: November 2011
• Authors: Xiao Hua Yu, Yong Gang Li, Da Jin Yang, Zhe Shi, Ji Kun Wang, Gang Xie
• Keywords: Bulk Concentrate, Carbonate Conversion -Silicofluoric Acid Leaching, Flotation-Distillation, Leaching Silver Using Thiourea, Pressure Leaching

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