Pressure cyanide leaching for precious metals recovery

José R. Parga, Jesús L. Valenzuela, Francisco Cepeda T.

Research output: Contribution to journalArticlepeer-review


A novel method demonstrates that the oxidation and dissolution of gold and silver in alkaline cyanide solution can be conducted simultaneously in the same autoclave in less than 90 minutes with a recovery that exceeds 96%. Because mild operating conditions of 80°C and 0.6 MPa oxygen pressure are used in this process, low cost materials of construction can be utilized for the autoclave.
Original languageSpanish (Mexico)
Pages (from-to)43-47
Number of pages5
Issue number10
StatePublished - Oct 2007

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