Cyanide and copper recovery from barren solution of the Merrill Crowe process

José R. Parga, Jesús L. Valenzuela, J. A. Diaz

Producción científica: Capítulo del libro/informe/acta de congresoContribución a la conferenciarevisión exhaustiva

Resumen

This paper is a brief overview of the role of inducing the nucleated precipitation of copper and cyanide in a flashtube serpentine reactor, using sodium sulfide as the precipitate and sulfuric acid as pH control. The results showed that pH had a great effect on copper cyanide removal efficiency and the optimum pH was about 3 to 3.5. At this pH value copper cyanide removal efficiency could be achieved above 97 and 99%, when influent copper concentration ions were 650 and 900 ppm respectively. In this process the cyanide associated with the copper, zinc, iron cyanide complexes are released as HCN gas under strong acidic conditions, allowing it to be recycled back to the cyanidation process as free cyanide.

Idioma originalInglés
Título de la publicación alojadaREWAS 2013
Subtítulo de la publicación alojadaEnabling Materials Resource Sustainability - Held During the TMS 2013 Annual Meeting and Exhibition
EditorialMinerals, Metals and Materials Society
Páginas287-294
Número de páginas8
ISBN (versión impresa)9781627489348
DOI
EstadoPublicada - 2013
EventoREWAS 2013: Enabling Materials Resource Sustainability - TMS 2013 Annual Meeting and Exhibition - San Antonio, TX, Estados Unidos
Duración: 3 mar. 20137 mar. 2013

Serie de la publicación

NombreTMS Annual Meeting

Conferencia

ConferenciaREWAS 2013: Enabling Materials Resource Sustainability - TMS 2013 Annual Meeting and Exhibition
País/TerritorioEstados Unidos
CiudadSan Antonio, TX
Período3/03/137/03/13

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