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The Enhancement of Oxidization/Cyanidation Leaching and Dissolution of Copper and Lead from the Precipitate for the Recovery of Silver/ Gold by Electrocoagulation Process

Author

Listed:
  • José Refugio Parga Torres
  • Esteban Sánchez Valdés
  • Jesús Ventura Valdés
  • Nelson Oshogwue Etafo1

    (Departament of Metallurgy and Materials Science, Tecnologico Nacional de Mexico – IT Saltillo. Blvd V.Carranza 2400, Col. Tecnológico, Saltillo, Coahuila, C.P.25280, México)

  • Francisco Cepeda Rodríguez

    (Autonomous University of Coahuila, Faculty of Engineering, Fundadores Km. 13. Las Glorias Ciudad Universitaria, 25350 Arteaga, Coahuila, Mexico)

  • Gregorio González Zamarripa

    (Superior Technology Institute of Monclova, Carr. 57 Km. 4.5 Technology Unit, Monclova, Coah., C.P. 25701, México)

Abstract

Mexico is currently the world’s leading silver producer. The preferred method for silver and gold recovery has long been the zinc cementation Merrill-Crowe process. However, after the precious metals are precipitated with zinc dust in the filter press, the resulting cake often requires dry oxidation and acid or basic leaching dissolution to control the accumulation of zinc, copper, lead, cadmium and iron impurities in the final precipitate product, that resulting in lower quality.

Suggested Citation

  • José Refugio Parga Torres & Esteban Sánchez Valdés & Jesús Ventura Valdés & Nelson Oshogwue Etafo1 & Francisco Cepeda Rodríguez & Gregorio González Zamarripa, 2025. "The Enhancement of Oxidization/Cyanidation Leaching and Dissolution of Copper and Lead from the Precipitate for the Recovery of Silver/ Gold by Electrocoagulation Process," Biomedical Journal of Scientific & Technical Research, Biomedical Research Network+, LLC, vol. 64(2), pages 56229-56241, December.
    • Handle: RePEc:abf:journl:v:64:y:2025:i:2:p:56229-56241
    DOI: 10.26717/BJSTR.2025.64.010001
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    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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