Mineralogical characterization applied to iron ore tailings from the desliming stage with emphasis on quantitative electron microscopy-QEM.
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2021
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The search for alternatives that minimize the generation of tailings and enable their reuse, leads
to characterization studies with the objective of a better understanding of the physical, chemical and
mineralogical properties of iron ore tailings. The increase in demand for high-quality ore overlapping
ore extraction with increasingly lower iron concentration levels, is part of the challenge of mineral
exploitation. In view of the aforementioned needs, a more detailed characterization of the tailings
contributes to the improvement of the mineral processing stage and the reuse of the generated tailings.
To this end, an analysis of the characteristics of the tailings was carried out through physical, chemical
and mineralogical characterization, with emphasis on quantitative electron microscopy - QEM. The
tests revealed that the predominant phases are hematite and quartz and, to a lesser extent, goethite,
gibbsite and kaolinite. As for the degree of release, hematite/magnetite has 88.13% of its particles totally
free, 0.53% associated with quartz and 6.77% associated with goethite. The chemical composition is
32.29% Fe, 47.92% SiO2, 2.76% Al2O3, and 2.14% PPI. In this scenario, mineralogical characterization,
as a main component of geometallurgy, makes it possible to propose alternatives that improve the ore
beneficiation process and the reuse of tailings.
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SOUZA, A. H. de et al. Mineralogical characterization applied to iron ore tailings from the desliming stage with emphasis on quantitative electron microscopy-QEM. Materials Research, v. 24, n. 3, artigo e20190677, 2021. Disponível em: <https://www.scielo.br/j/mr/a/6CxGqFjkfKLMq9d9sH5fpSc/?lang=en>. Acesso em: 06 jul. 2023.