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Article

Proposal for an Environmentally Sustainable Beneficiation Route for the Amphibolitic Itabirite from the Quadrilátero Ferrífero-Brazil

1
Mine Planning at Brucutu Mine—Vale, São Gonçalo do Rio Abaixo, Rio de Janeiro CEP 35.935-000 Brazil
2
Mining Engineering Department, School of Mines, Federal University of Ouro Preto, Ouro Preto 35400-000, Brazil
*
Author to whom correspondence should be addressed.
Minerals 2020, 10(10), 897; https://doi.org/10.3390/min10100897
Received: 27 July 2020 / Revised: 29 September 2020 / Accepted: 4 October 2020 / Published: 10 October 2020
The high world demand for iron ores opposed to the rapid exhaustion of high-grade deposits from the main producing regions around the world has motivated the search and/or improvement of beneficiation routes, which enable the economic use of iron formations previously considered marginal ores, which have the potential to considerably increase mineable reserves due to their large volume. In this study, a sample of amphibolitic itabirite from the eastern region of the Quadrilátero Ferrífero, Minas Gerais, Brazil was characterized, aiming at its use in the industrial pelletizing circuit. The main physical characteristics of this ore are moisture = 10% and specific weight = 3710 kg/m3. The ore has a high grade of loss on ignition—LOI (6.7%) and P (0.14%). Through X-ray diffractometry (XRD), optical microscopy and scanning electron microscope—SEM, the ore was found to consist of 64.5% goethite (amphibolitic, alveolar, massive and earthy); 6.8% hematite (martitic, granular and lamellar) and 0.9% magnetite. The main gangue mineral is quartz (25.5%). Based on the results of concentration tests (magnetic and flotation) performed with the studied sample, the magnetic concentration route of deslimed sample followed by the addition of slimes in magnetic concentrate can be incorporated into the pelletizing process. View Full-Text
Keywords: amphibolitic itabirite; goethite; iron ore; magnetic concentration; flotation amphibolitic itabirite; goethite; iron ore; magnetic concentration; flotation
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MDPI and ACS Style

Gonçalves, G.M.C.; Lima, R.M.F. Proposal for an Environmentally Sustainable Beneficiation Route for the Amphibolitic Itabirite from the Quadrilátero Ferrífero-Brazil. Minerals 2020, 10, 897. https://doi.org/10.3390/min10100897

AMA Style

Gonçalves GMC, Lima RMF. Proposal for an Environmentally Sustainable Beneficiation Route for the Amphibolitic Itabirite from the Quadrilátero Ferrífero-Brazil. Minerals. 2020; 10(10):897. https://doi.org/10.3390/min10100897

Chicago/Turabian Style

Gonçalves, Gizele M.C., and Rosa M.F. Lima. 2020. "Proposal for an Environmentally Sustainable Beneficiation Route for the Amphibolitic Itabirite from the Quadrilátero Ferrífero-Brazil" Minerals 10, no. 10: 897. https://doi.org/10.3390/min10100897

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