Zobrazeno 1 - 10 of 18 pro vyhledávání: '"Angela Nair Avelar"'
2
Adsorption of sulfosuccinate collector on apatite and carbonates in a phosphate ore, in the presence of carbon dioxide
Autor: Paulo Roberto Gomes Brandão, Angela Nair Avelar, Reiner Neumann
Publikováno v: Brazilian Journal of Chemical Engineering. 38:573-583
A phosphate ore from the Catalao mine (Brazil) poses a challenge for apatite flotation from its carbonate gangue minerals. In recent developments, selectivity has been enhanced by using CO2 instead of air. The adsorption of the sulfosuccinate collect
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7c3d361716e6d40354e1f3c47917c1c0
https://doi.org/10.1007/s43153-021-00108-3
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3
Selective Extraction of Rare Earth Elements from Monazite Ores with High Iron Content
Autor: Ruberlan Gomes Silva, Virginia S.T. Ciminelli, Leandro Augusto Viana Teixeira, D. Majuste, Angela Nair Avelar
Publikováno v: Mining, Metallurgy & Exploration. 36:235-244
Rare earth elements are essential for modern life products and green technologies. Recent supply constraints have boosted the development of rare earth projects after the price peak of 2011. The feasibility of a project depends on the definition of a
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::82546a48ff79a6b3109c380557a6c880
https://doi.org/10.1007/s42461-018-0035-5
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7
Caracterização dos minerais do grupo da apatita e carbonatos no minério sílico-carbonatado de Catalão, GO, e sua relevância no processo de flotação
Autor: Angela Nair Avelar
Publikováno v: Repositório Institucional da UFMG
Universidade Federal de Minas Gerais (UFMG)
instacron:UFMG
Amostra do minério sílico-carbonatado (SIC) de Catalão, Goiás, foi analisada e submetida às rotas de processamento mineral projetadas para os minérios dos depósitos de Catalão (Catalão I) e Araxá (Barreiro). Apesar de ambos estarem localiza
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc82527c451b5a5afae83d6aff4779d0
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9
Role of iron oxy-hydroxides on settling behaviour of red mud
Autor: Angela Nair Avelar, G. M. da Costa, Teresa Ribeiro, Efigênia Ferreira e Ferreira
Publikováno v: Canadian Metallurgical Quarterly. 53:478-485
Nine bauxite samples from Brazil and one from Ghana were submitted to alkaline digestion at 145°C. All initial samples and their red muds were chemically analysed and characterised by X-ray diffraction and Mossbauer spectroscopy at 298 and 77 K. The
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0433cd70feaa8be781ca56216e6abbe1
https://doi.org/10.1179/1879139514y.0000000137
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10
Refinement of the isomorphic substitutions in goethite and hematite by the Rietveld method, and relevance to bauxite characterisation and processing
Autor: Geraldo Magela da Costa, Angela Nair Avelar, Reiner Neumann
Publikováno v: Repositório Institucional da UFOP
Universidade Federal de Ouro Preto (UFOP)
instacron:UFOP
Although bauxites usually have a quite simple mineralogy – gibbsite (+boehmite), quartz, kaolinite, hematite, goethite, anatase (+rutile) and minor or less common phases, fine particle size, low crystallinity and variable compositions of the iron m
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::17baefbef23dc02ba6fbcb87d33e4cc6
https://doi.org/10.1016/j.mineng.2013.09.020
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