METODOLOGY FOR LATERÍTICS CU-BEARING CLAY MINERALS CHARACTERIZATION

Eliana Satiko Mano; Laurent Caner; Arthur Pinto Chaves

doi:10.15628/holos.2015.3531

Autores

Eliana Satiko Mano Departamento de Engenharia de Minas e de Petróleo da Escola Politécnica da Universidade de São Paulo
Laurent Caner Université de Poitiers
Arthur Pinto Chaves Instituto Tecnológico Vale – ITV- Mineração

DOI:

https://doi.org/10.15628/holos.2015.3531

Palavras-chave:

Clay minerals, Cu-laterite, mineral characterization

Resumo

Lateritic material lies over nearly 75% of the Brazilian surface area; but not more than 30% of this material is exploited. The expressive volume of clay minerals associated to the ores is the main reason of this low figure, especially because clay minerals are very complex, most of the time, impossible to concentrate. Under this circumstance, a proper mineral identification and the knowledge of the clay mineral structure are essential for the best mineral processing route choice.

This study describes an optimized methodology to characterize a Cu-lateritic ore, mainly composed of Cu-bearing clay minerals. Cations saturations and particle sizes separation, combined with X-ray diffraction, mid infrared spectroscopy and scanning electron microscopy allow concluding that this Cu-lateritic ore is mainly composed of smectites, micas and kaolinite; furthermore, the copper is especially associated to mica and secondarily to smectite.

Downloads

Não há dados estatísticos.

Métricas

Carregando Métricas ...

Biografia do Autor

Eliana Satiko Mano, Departamento de Engenharia de Minas e de Petróleo da Escola Politécnica da Universidade de São Paulo

Sou geóloga, com mestrado e doutorado pelo Departamento de Engenharia de Minas e de Petróleo da Escola Politécnica da USP. Pós-doutorado pela Université de Poitiers em argilomineraais.

Laurent Caner, Université de Poitiers

CNRS IC2MP-HydrASA UMR 7285

Referências

Bailey, S.W. Nomenclature for regular interstratifications. American Mineralogist. 67, 394-398. 1982.

Brindley, G. W. and Brown, G. Crystal structures of clay minerals and their X-ray identification. Mineralogical Society - Monograph, n. 5, 495 p. 1980.

Christidis G. E., Eberl D.D. Determination of layer-charge characteristics of smectites. Clays and Clay Minerals. 51 (6); 644-655. 2003.

Decarreau, A., Colin, F., Herbillon, A., Manceau, A., Nahon, D., Paquet, H., Trauth-Badaud, D. and Trescases, J. J. Domain segregation in Ni-Fe-Mg-smectites. Clays and Clay Minerals. 35, 1, 1-10. 1987.

Grauby O., Petit S., Decarreau A. and Baronnet A. The nontronite-saponite series : An experimental approach. European Journal of Mineralogy; 6; 99-112. 1994.

Ildefonse, P., Manceau, A., Prost, D. and Toledo-Groke, M.C. Hydroxy-Cu-vermiculite formed by the weathering of Fe-biotites at Salobo, Carajas, Brazil. Clays and Clay Minerals. 34, 3, 338-345. 1986.

Langer, E. Ferronickel production at Morro do Nickel, Minas Gerais, Brazil. In: International Laterite Symposium. [Proceedings]; 1979, New Orleans, Louisiana; ed. by D.J.I. Evans; R.S. Shoemaker and H. Veltman. New York. p. 397-411. 1979.

Madejová, J., Balan, E. and Petit, S. Application of vibrational spectrocopy to the characterization of phyllosilicates and other industrial minerals. In: Christidis, G. E. (Ed.). Advances in the characterization of industrial minerals. Middlesex: European Mineralogical Union/Mineralogical Society of Great Britain and Ireland (EMU Notes in Mineralogy). 9, 6, 171-226. 2011.

Mano E.S., Caner L., Petit S., Chaves A.P. and Mexias A.S. Mineralogical characterization of Ni-bearing smectites from Niquelândia, Brazil. Clays and Clay Minerals. 62 (4); 324-335. 2014.

Mano E.S. Influência dos argilominerais dos minérios de níquel lateríticos na recuperação deste metal. São Paulo, 2013. Tese de Doutorado-Escola Politécnica da Universidade de São Paulo, São Paulo. 2013.

Moore D.M. and Reynolds R.C.Jr. X-ray diffraction and the identification and analysis of clay minerals. 2nd. ed. Oxford: University Press. 1989.

Mosser, C., Mestdagh, M., Decarreau, A. and Herbillon, A. J. Spectroscopic (ESR, EXAFS) evidence of Cu for (Al-Mg) substitution in octahedral sheets of smectites. Clay Minerals. 25, 271-282. 1990.

Petit, S., Caillaud, J., Righi D., Madejová, J., Elsass, F. and Köster, H.M. Characterization and crystal chemistry of an Fe-rich montmorillonite from Ölberg, Germany. Clay Minerals, 37, 283-297. 2002.

Petit, S., Righi, D., Madejova, J. and Decarreau, A. Layer charge estimation of smectites using infrared spectroscopy. Clay Minerals. 33,579-591. 1998.

Petit S., Prot T., Decarreau A., Mosser C. and Toledo-Groke M.C. Crystallochemical study of a population of particles in smectites from a lateritic weathering profile. Clays and Clay Minerals. 40 (4); 436-445. 1992.

Richter, D. Uma rota de recuperação de metal a partir de escória secundária da produção de ferroníquel. São Paulo, 2009. Dissertação Mestrado-Escola Politécnica da Universidade de São Paulo, São Paulo. 2009.

Toledo-Groke, M.C.; Melfi, A.J and Parisot, J.C. Comportamento do cobre durante o intemperismo das rochas xistosas cupríferas do Salobo 3?, Serra dos Carajás. Geochimica Brasiliensis, 1 (2), 187-200 p. 1987.

Toledo-Groke, M. C.,: Prost, D., Ildefonse, P., Melfi, A. J., Delvigne, J. and Parisot, J. C. Alteração dos minerais na zona supérgena da formação cuprífera do Salobo 3a (Serra dos Carajás) - localização do cobre nos produtos secundários. Revista Brasileira de Geociências. 15, 4, 293-299. 1985.

Walker. G.F. On the differentiation of vermiculites and smectites in clays. Clay Mineralogy Bulletin, 3, 154-163. 1957.

Wilson, M. Clay mineralogy: spectroscopic and chemical determinative methods. Chapman and Hall: London. 1994.