Technological characterization of metapyroxenite of the Córrego dos Boiadeiros Formation, Nova Lima (MG), Brazil.
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Date
2021
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Abstract
Rocks and industrial minerals are raw materials employed
in the production of a wide variety of products, used by
modern society. The same mineral or industrial rock can
have several applications, depending on their physical,
mineralogical and chemical characteristics. The present
study had as its objective, the technological
characterization of a metapyroxenite sample, belonging
to the Córrego dos Boiadeiros body in the Quadrilátero
Ferrífero, MG (Brazil) in order to verify its possible
industrial applications. For this research study, X-ray
fluorescence chemical analyzes were performed, which
determined the following oxides: 0.06% TiO2, 8.2% Fe2O3,
24.1% MgO, 2.1% Al2O3, 48.7% SiO2 and 1.8% CaO. In the
mineralogical characterization by X-ray diffraction, optical microscopy, SEM / EDS and thermogravimetry,
the following minerals were identified: antigorite,
chlorite, chromite, ilmenite, magnetite, rutile, talc and
tremolite. For the preliminary concentration tests, the
material used (-147μm) presented 32% of the particles in
the fraction -37μm with d50 in 74μm. The 3575 Gauss
magnetic field and the particle size fraction -74μm
generated a mass recovery of 96.4% and a whiteness of
61.9% for the non-magnetic product. Although no talc
enriched products were generated by preliminary
magnetic separation tests, the non-magnetic products
presented specifications for the following applications:
paper (wallpaper and packing), insecticide and fertilizers.
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Keywords
Talc, Whiteness, Talco, Alvura
Citation
FERREIRA, B. T. et al. Technological characterization of metapyroxenite of the Córrego dos Boiadeiros Formation, Nova Lima (MG), Brazil. HOLOS, v. 6, artigo e9732, 2021. Disponível em: <https://www2.ifrn.edu.br/ojs/index.php/HOLOS/article/view/9732>. Acesso em: 29 abr. 2022.