2019
DOI: 10.1016/j.mineng.2018.11.041
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Life cycle assessment of niobium: A mining and production case study in Brazil

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Cited by 31 publications
(16 citation statements)
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“…Although very economically beneficial and crucial for the world's technological and infrastructural needs, Brazilian niobium mining has been raising some concerns regarding its environmental impact. A niobium Life Cycle Assessment has been the focus of a case study conducted in Brazil (Alves & Coutinho, 2019). The authors highlight the small product/waste ratio on Nb mining due to the low average niobium concentration on the ore.…”
Section: Niobium In Brazilmentioning
confidence: 99%
“…Although very economically beneficial and crucial for the world's technological and infrastructural needs, Brazilian niobium mining has been raising some concerns regarding its environmental impact. A niobium Life Cycle Assessment has been the focus of a case study conducted in Brazil (Alves & Coutinho, 2019). The authors highlight the small product/waste ratio on Nb mining due to the low average niobium concentration on the ore.…”
Section: Niobium In Brazilmentioning
confidence: 99%
“…The mixture was permitted to reflux for ∼17 h at a constant temperature of 80 • C, with a slight bubbling during the reaction time. The white precipitate was dried at 120 • C, in an oven at atmospheric pressure for 6 h. The synthesis of NbO 5 •3H 2 O (supplied by CBMM) used in this work is reported by Rangel et al (2019), who explore the sintering of the pyrochloro mineral and subsequent refinement in an electric furnace, where it is defoforized and treated in an alkaline medium for its subsequent calcination. The impregnations of NbO 5 •3H 2 O with Titanium oxalate (IV) (0.5, 1, and 1.5 w%) were made wet using Ti (C 2 O 4 ) 2 (0.01, 0.02 mol, and 0.03 mol, respectively), maintaining magnetic stirring at 300 rpm for 3 h. The paste mixture was subjected to ultrasound for 5 min.…”
Section: Synthesis Of Niobium-titanium-based Photocatalystsmentioning
confidence: 99%
“…Estudo realizado por Alves e Coutinho (2019), sobre a produção de liga FeNb, constatou que nas etapas de separação magnética, flotação e deslamagem do processo de beneficiamento, os rejeitos produzidos contêm radionuclídeos naturais, sobretudo 238 U, 226 Ra, 210 Pb, 232 Th e 228 Ra [10].…”
Section: Introductionunclassified