Arsenic management in the metallurgical industry: The Chilean experience

Armando Valenzuela, Eduardo Balladares, Domingo Cordero, Mario Sánchez

Resultado de la investigación: Contribución a los tipos de informe/libroContribución a la conferenciarevisión exhaustiva

3 Citas (Scopus)

Resumen

Arsenic has been a common impurity in copper sulfide concentrates treated pyrometallurgically in Chile, which inevitably during the smelting-converting process reports in the final copper product affecting its properties, but also affecting environment as a very toxic occupational hazard. The enforcement of air quality standards, which regulate pollutants such as sulfur dioxide, particulate matter, and arsenic, has resulted in the implementation of pollution abatement plans and emission reduction schedules mainly by state-owned copper concentrate smelters. Investments associated with these plans incorporated gas-handling systems in order to capture polluting emissions. Electrostatic precipitators recover dusts containing mainly Cu and As which are leached to recover copper, while arsenic is disposed currently in the form of ferric arsenate. Gases containing high sulfur dioxide content are treated in plants to produce sulfuric acid, which is used in various classical and new hydrometallurgical processes. Additionally, smelters have effluents treatment plants for arsenic disposal either as ferric arsenate or calcium arsenate/arsenite. This paper reviews the environmental situation of the Chilean metallurgical industry, and the present trends for arsenic management are particularly emphasized since Chile is the world's largest copper producer.

Idioma originalInglés
Título de la publicación alojadaSohn International Symposium
Subtítulo de la publicación alojadaAdvanced Processing of Metals and Materials - Proceedings of the International Symposium
Páginas407-422
Número de páginas16
EstadoPublicada - 2006
Publicado de forma externa
Evento2006 TMS Fall Extraction and Processing Division: Sohn International Symposium - San Diego, CA, Estados Unidos
Duración: 27 ago 200631 ago 2006

Serie de la publicación

Nombre2006 TMS Fall Extraction and Processing Division: Sohn International Symposium
Volumen9

Conferencia

Conferencia2006 TMS Fall Extraction and Processing Division: Sohn International Symposium
País/TerritorioEstados Unidos
CiudadSan Diego, CA
Período27/08/0631/08/06

Áreas temáticas de ASJC Scopus

  • Ingeniería (todo)

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