Uranium Mine
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Application of the fundamental parameter method to the assessment of major and trace elements in soil and sediments from Osamu Utsumi uranium mine by WDXRF
Abstract Wavelength dispersive X-ray fluorescence spectrometry (WDXRF) is a suitable technique for the characterization of contaminated mining sites, providing a quick and reliable screening for areas of significant contamination. This study established and validated a non-destructive methodology for quantitative simultaneous determination of major and minor
REM, Int. Eng. J.. Publicado em: 16/09/2019
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2. Estimativa simultânea de parâmetros hidráulicos e de transporte em estéreis de mineração de urânio / Simultaneous estimation of hydraulic and transport parameters inwaste rock from uranium mining
The present work aims to simultaneously estimate the hydraulic and transport parameters related to the material of one of the waste rock piles (Waste Rock Pile 4) from the Poços de Caldas uranium mining and milling facility. Before performing the estimation, it was necessary to study the chemical species that are dissolved from this material by the climate
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/06/2010
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3. Recuperação de urânio de rejeito de mina por meio de lixiviação alcalina / Recovery of uranium from mine wastes by alkaline leaching
Appropriate management of wastes is one of the most important environmental problems, particularly concerning the tailings of mining activities. Interim storage of the tailings at incorrect places pending treatment demands an urgent solution. The Osamu Utsumi Mine located in the city of Caldas, Minas Gerais, has faced such problem. The waste of the mine cons
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/04/2010
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4. Estudo da remoção de manganês de efluentes de mineração utilizando cal, calcário e dióxido de manganês / Study of manganese removal from mining effluent using lime, limestone and manganese dioxide
Manganese is a common component of acid mine drainage (AMD). Due to its high solubility over a wide pH range, it is notoriously difficult to remove it from contaminated waters. The AMD that occurs in Mineral Industrial Complex of Poços de Caldas (CIPC) which belongs to the Nuclear Industries of Brazil (INB), is due to the great amount of su
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/06/2009
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5. Inclusões fluidas nos minerais associados a mineralização uranífera da jazida do Engenho (anomalia 09), Província Uranífea de Lagoa Real, Bahia / Fluid Inclusions in minerals associated to uranium mineralization in Engenho Deposit (anomaly 09) Lagoa Real Uranium Province Bahia
The Engenho deposit (anomaly 09) is south-eastern from Cachoeira Mine (anomaly 13), in the northern part of the Province. The uranium mineralization is associated to albitites (over 70% of albite/oligoclase). Epidosites with uranium may also occur. The albitite main minerals are pyroxene, garnet, albite/oligoclase feldspar, amphibole and biotite. Pyroxene, g
Publicado em: 2009
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6. Caracterização limnológica e avaliação de efeitos ambientais causados por efluente de mina de urânio sobre populações microbianas planctônicas da represa das Antas, Caldas (M.G.). / Limnological characterization and evaluation of environmental effects caused by uranium mine effluents on planktonic microbial communitties in the Antas reservoir, Caldas (M.G.).
A bacia hidrográfica do Ribeirão das Antas inicia-se na represa das Antas, construída em 1982. A represa das Antas recebe os efluentes tratados da UTM (Unidade de Tratamento de Minério), procedentes de drenagens ácidas geradas em pilhas de rejeitos de urânio. Foi realizada a caracterização limnologica deste corpo aquático visando a determinar o impa
Publicado em: 2008
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7. Datação química U-Th-Pb de minerais dos albitidos uraniferos da região de Lagoa Real (BA) por microssonda eletrônica
Different works in literature have used U-Th-Pb electron microprobe analyses for the chemical dating of U-Th-Pb system closing episodes in minerals. These episodes could have either metamorphic, thermal, and weathering nature or could be related to natural fission processes. Different thorium and uranium-bearing minerals which contain radiogenic lead have be
Publicado em: 2008
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8. Distribuição de radionuclídeos em um afloramento de sedimentos permianos da formação Iratí na Bacia do Paraná
The objective of this work is to study natural radionuclides in sedimentary rocks. The concentration of them reflects the origin of the sediments, the deposicional environment as well as some mineralogical characteristics of the rock matrix, and also more recent events as weathering and erosion. Using gama ray high resolution spectrometry, the profile of act
Publicado em: 2008
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9. ANÁLISE DE MÚLTIPLAS VARIÁVEIS NO FECHAMENTO DE MINA ESTUDO DE CASO DA PILHA DE ESTÉRIL BF-4, MINA OSAMU UTSUMI, INB CALDAS, MINAS GERAIS.
The Osamu Utsumi belongs to Indústrias Nucleares do Brasil (INB), located in Caldas/MG, operated from 1982 to 1995, when the complete suspension of mining activities a processing of the uranium ore took place. Since then, the mine has an active maintaining system, which focus is the treatment of the acid drainage from the pit, waste dumps (locally called bo
Publicado em: 2007
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10. Análise morfológica e molecular de cianobactérias isoladas de efluentes de uma mina de urânio desativada com ênfase em Aphanothece e sua capacidade de biossorção do 226Ra / Morphological and molecular analysis of cyanobacteria isolated from a deactivated uranium mine effuents with emphasis in Aphanothece and its 226Ra biosorption capacity
Cyanobacteria are oxygenic photosynthetic microorganisms with wide metabolic and structural plasticity, which have biotechnological potential for exploration in metals biosorption and organic pollutants biodegradation. Due to its strong interactions with cations and a reliable supply of cheap biomass, cyanobacteria may be a promising biosorbent candidate for
Publicado em: 2006
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11. Manganese removal and uranium recovery from acid mine drainage / Remoção de manganês e recuperação de urânio presentes em águas ácidas de mina
A drenagem ácida de mina no Complexo Mínero Industrial de Poços de Caldas - CIPC, das Indústrias Nucleares do Brasil, INB, tem origem nas grandes quantidades de rejeitos constituídos de minério sulfetado de baixo teor de U (<200ppm) e o estéril dispostos em grandes áreas circunvizinhas da região mineradora. Essas áreas tornaram uma fonte de drenage
Publicado em: 2006
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12. ESTABILIDADE E DEFORMAÇÃO DE TALUDES DE SOLO SOB CARREGAMENTO SÍSMICO / STABILITY AND DEFORMATION OF SOIL SLOPES UNDER SEISMIC LOAD
The seismic stability of slopes has been a topic of considerable interest in geotechnical engineering for the past 40 years. During that period, the state of practice has moved from simples techniques to more complicated numerical procedures. The simplest approach is the pseudo-static analysis in which the earthquake load is simulated by an equivalent static
Publicado em: 2006