Gold Sterile Ore Acid Generation Evaluation, San Juan Argentina

Vanesa Bazan; Pedro Sarquis; Elena Brandaleze

doi:10.4236/jep.2014.513123

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Journal of Environmental Protection > Vol.5 No.13, October 2014

Gold Sterile Ore Acid Generation Evaluation, San Juan Argentina ()

Vanesa Bazan^1*, Pedro Sarquis², Elena Brandaleze³

¹CONICET, Instituto de Investigaciones Mineras, Universidad Nacional de San Juan, San Juan, Argentina.
²Instituto de Investigaciones Mineras, Universidad Nacional de San Juan, San Juan, Argentina.
³Metallurgical Department and Technology and Materials Develop Center, DEYTEMA, Universidad Tecnológica Nacional, Facultad Regional de San Nicolás, San Nicolás, Argentina.

DOI: 10.4236/jep.2014.513123 PDF HTML XML 3,276 Downloads 3,754 Views

Abstract

One of the problems that mining represents in relation to the natural watercourses is the possible formation of what we call acid mine drainage, which consists in the emission or formation of water effluents of great acidity, usually rich in sulfate and with variable contents in heavy metals. The drainage mentioned is developed from the metal sulfide and sulfate leaching. Researches about the creation of acid drainage suggest that the formation of these depends directly on various factors: primary mineralogy (neutralizer sulfides and minerals), water presence (whether), oxygen diffusion, grain size, microbiological interaction (bacterium), among others. To study these variables and to relate them with geological factors, static (Acid-Base Accounting) and dynamic (Humidity Cell) tests have been developed, among others. The mentioned tests are applied to a case of a gold deposit situated in the Province of San Juan, which is currently very argued because of its mining activity due to its leaching process. In the sterile mineral obtained from the process, kinetics tests were carried out in humidity cells to simulate the natural oxidation of the primary mineral samples. In the obtained leaching, pH values closer to neutrality and a limited solution metal presence were detected, indicating the neutralization ability due to the carbonates ores presence.

Keywords

Acid Drainage, Sulfide Ores, Carbonates Ores

Share and Cite:

Bazan, V. , Sarquis, P. and Brandaleze, E. (2014) Gold Sterile Ore Acid Generation Evaluation, San Juan Argentina. Journal of Environmental Protection, 5, 1294-1304. doi: 10.4236/jep.2014.513123.

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	Lapakko, K. (2002) Metal Mine Rock and Waste Characterization Tools: An Overview. Mining, Minerals and Sustainable Development, No. 67.
[2]	Mendoza, E., Armiento, M., Ayora, C., Soler, A. and Ramos, E. (2006) Potencial lixiviacion de elementos traza en jales de las minas La Asuncion y las Torres. en el Distrito Minero de Guanajato. Mexico. Revista Mexicana de Ciencias Geologicas, 23, No. 1.
[3]	Johnson, D. and Hallber, K. (2005) Acide Mine Drainage Remediation Options: A Review. Science of the Total Environment, 338, 3-14.
[4]	Akcil, A. and Koldas, S. (2006) Acid Mine Drainage (AMD): Causes, Treatment and Case Studies. Journal of Cleaner Production, 14, 1139-1145. http://dx.doi.org/10.1016/j.jclepro.2004.09.006
[5]	Lei, L., Song, C., Xie, X., Li, Y. and Wang, F. (2010) Acid Mine Drainage and Heavy Metal Contamination in Groundwater of Metal Sulfide Mine at Arid Territory (BS Mine, Western Australia). Transactions of Nonferrous Metals Society of China, 20, 1488-1493.
[6]	Costin, D., Baciu, C., Pop, C. and Varga, I. (2011) Field-Based Kinetic Testing of ARD Potential of the Waste Rock from Rosia Montana ore Deposit (Apuseni Mountains. Romania). In: Rude, R.T., Freund, A. and Wolkersdorfer, Ch., Eds., Mine Water—Managing the Challenges, IMWA, Aachen, 677-682.
[7]	Blowes, D.W., Ptacek, C.J. and Jurjovec, J. (2003) Mill Tailings: Hydrogeology and Geochemistry. In: Jambor, J.L. Blowes, D.W. and Ritchie, A.I.M., Eds., Environmental Aspects of Mine Wastes, Mineralogical Association of Canada.
[8]	Frau, F., Cidu, R. and Dadea, C. (2011) AMD Generation from Dissolution of Secondary Metal Sulphates. In: Rude, R.T., Freund, A. and Wolkersdorfer, Ch., Eds., Mine Water—Managing the Challenges, IMWA, Aachen, 301-306.
[9]	Morales, A. (2003) Determinacion y mitigacion del potencial de generacion acido en botaderos de esteriles mina del proyecto Desarrollo Teniente Division El Teniente, CODELCO-Chile. Congreso Geologico Chileno, Concepcion.
[10]	Honig, H., Metzger, C., Pust, C.H. and Schuppe, B. (2011) Dissolution of Various Basic Substances. In: Rude, R.T., Freund, A. and Wolkersdorfer, Ch., Eds., Mine Water—Managing the Challenges, IMWA, Aachen, 349-352.
[11]	Moricz, F., Madai, F. and Walder, I. (2011) Pyrite Oxidation Changes in Sulphidic Mine WASTES from the Itos Sn-Ag Deposit, Bolivia. In: Rude, R.T., Freund, A. and Wolkersdorfer, Ch., Eds., Mine Water—Managing the Challenges, IMWA, Aachen, 683-688.
[12]	Dold, B. (2005) Basic Concepts of Environmental Geochemistry of Sulfide Mine-Waste. In Mineralogia, geoquimica y geomicrobiologia para el manejo ambiental de desechos mineros. XXIV Curso Latinoamericano de Metalogenia, Lima, UNESCO-SEG.