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SECTION C: ENGINEERING

Vol. 2 No. 2 (2010)

Development of activated carbons magnetic for the recovery of gold in cyanide solutions

DOI
https://doi.org/10.18272/aci.v2i2.34
Submitted
July 2, 2015
Published
2010-06-01

Abstract

Activated Carbons owe its adsorptive properties to their highly developed porous structu­re. As a result, activated carbons have extensive specific surface areas. Currently, granular activated carbons produced from coconut shells are widely used for gold recovery from alkaline cyanide solutions. Magnetic activated carbons (MACs) for gold recovery, synthesized from sources different that the traditional ones, have been developed at the University of Utah, mixing a carbon source with a magnetic precursor, and putting the mixture under controlled conditions of temperature and gaseous phase composition. This document con­tains fundamental aspects and preliminary experimental results during the development of magnetic activated carbons.

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References

  1. Miller, J.D., Muñoz, G.A., y Duyvesteyn, S. 2004. "Design and synthesis of powdered magnetic activated carbons for aurodicyanide anion adsorption from alkaline cyanide leaching solutions, Anion Separations: Fundamentals and Applications". B.A. Moyer, and R.J. Singh, eds., Kluwer Academic/Plenium Publishers. New York, NY. 277-292.
  2. Silverberg, P. 1999. "Activated carbon, for the "˜hole"™ cleanup job". Chemical Engineering. 33-37.
  3. Freedonia Group. 1998. "Activated Carbon to 2002", Estudio 1065.
  4. Roskill Consulting Group. 1998. "The Economics of Activated Carbon."
  5. Jankowska, J., Swiatkoski, A., y Choma, J. 1991. "Active carbon." Ellis Horwood, Inglaterra.
  6. Wigmans T. 1989. "Industrial aspects of production and use of activated carbons." Carbon. 27, 13-22.
  7. Swiatowki,. J. 1999. "Industrial carbon absorbents, in: Adsorption and its Application in Industry and Environment Protection." Studies in Surface Science and Catalysis. 120A, 69-94.
  8. Muñoz, G.A. 2006. "Magnetic Activated Carbon for Gold Adsorption form Alkaline Cyanide Solution." Ph.D. Dissertation, The University of Utah, Salt Lake City, Utah, USA, 370
  9. Bansal, R.C., Donnet, J.B., y Stoeckli, F. 1988. "Active Carbon." Marcel Dekker, Inc., New York.
  10. Rodríguez-Reinoso F. 1991. "Controlled gasification of carbon and pore structure development" en: Fundamental Issues of Carbon Gasification Reactivity. Lahaye J., and Ehrburger P., eds., Kluwer Academic Publishers, The Netherlands, 533-571.
  11. Faulkner, W. 2000. "PACCO International." Comunicación personal.
  12. Marsden, J., y House, I. 1992. "The chemistry of gold extraction." Ellis Horwood, Cornwall.
  13. US Geological Survey. 2000. "Mineral Commodity Summaries." Febrero.
  14. American Norit Company. 1989. Inc Norit®, RO 3515 Bulletin, 8.
  15. Miller, J.D., Muñoz G.A, y Duyvesteyn S. 2001. "Magnetic activated carbon particles for adsorption of solutes from solution." Patente Provisional U2975.1P.
  16. Duyvesteyn, S., Muñoz, G.A., y Miller, J.D. 2002. "Magnetic activated carbon U an old product with a new future, Hydrometallurgy." TMS Annual Meeting. Seattle, Washington.
  17. Muñoz, G.A., Duyvesteyn, S., y Miller J.D. 2002. "Gold recovery from cyanide leaching solutions by powdered magnetic activated carbons." Proceedings of the 26th International Precious Metals Conference, IPMI. Miami, Florida.
  18. Muñoz, G.A., Duyvesteyn, S., y Miller, J.D. 2003. "Características estructurales y efecto de la distribución de porosidad en la adsorción de oro en carbones activados magnéticos." Memorias del Seminario Internacional de Metalurgia, Minería y Medio Ambiente. Quito. 71-82.