Mining Wastes
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Optical sorting technology for waste management from the Boukhadra iron ore mine (NE Algeria)
Abstract Mining processes in the iron ore mine of Boukhadra, Tebessa (NE Algeria) generated thousands of tons of mining wastes every year, which represents a real threat to the environment, leading to hazardous effects for the resident population of the region. The aim of this study is the selective sorting of the Boukhadra mining wastes for valorization. Th
REM - International Engineering Journal. Publicado em: 2022
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2. Using static, kinetic and metal mobility procedures to evaluate possibilities of coal waste land disposal at Moatize Mine, Mozambique
Abstract Coal mine waste rocks produced during mining and beneficiation can affect the environment due to land degradation and acid mine drainage generation. However, proper characterization and treatment of mineral processing wastes creates options for safe disposal, enhancing the environmental performance. The aim of this study was to use static and kineti
REM, Int. Eng. J.. Publicado em: 2020-12
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3. Crescimento e teor de cromo em mamoneira cultivada em solo receptor de resíduos de curtume e carboníferos
RESUMO A produção de resíduos tem aumentado em proporção direta com a industrialização dos países. Sendo assim, a disposição adequada desses resíduos é uma questão largamente discutida entre os órgãos ambientais. Por isso, o objetivo deste trabalho foi estudar o efeito residual de adições sucessivas de resíduos de curtume e da mineração d
Eng. Sanit. Ambient.. Publicado em: 20/12/2019
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4. Elemental composition of vegetables cultivated over coal-mining waste
ABSTRACT We assessed elemental composition of the liver in mice subjected to one-time or chronic consumption of the juice of vegetables cultivated in a vegetable garden built over deposits of coal waste. Lactuca sativa L. (lettuce), Beta vulgaris L. (beet), Brassica oleracea L. var. italica (broccoli) and Brassica oleracea L. var. acephala (kale) were collec
An. Acad. Bras. Ciênc.. Publicado em: 23/10/2017
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5. Production of humic substances through coal-solubilizing bacteria
In this paper, the production of humic substances (HS) through the bacterial solubilization of low rank coal (LRC) was evaluated. The evaluation was carried out by 19 bacterial strains isolated in microenvironments with high contents of coal wastes. The biotransformed LRC and the HS produced were quantified in vitro in a liquid growth medium. The humic acids
Braz. J. Microbiol.. Publicado em: 2014-09
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6. Valores de referência para metais potencialmente tóxicos em sedimentos e em moluscos filtradores no Rio Ribeira de Iguape / Reference values to potentially toxic metals in sediments and mussels in the River Ribeira de Iguape
The Ribeira do Iguape River Basin (RIRB) was historically influenced by intense mining activities mainly related to lead (Pb) extraction. For many decades, such exploitation was conducted under rudimentary conditions without control of environmental impacts produced during the stages of ore extraction and beneficiation. Thus, mining wastes and metallurgical
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/06/2012
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7. Desenvolvimento de argamassas contendo resíduos arenosos de mineração e estudo de suas propriedades visando sua utilização / Development of mortars containing mining waste sandy and studies of its properties aiming their use
A exploração de itabirito do minério de ferro para a indústria siderúrgica gera, entre outros, milhares de toneladas diárias de resíduo de arenoso. As características físicas e químicas homogêneas deste material, o faz atraente como matéria-prima para diversas indústrias, incluindo a fabricação de artefatos de cimento. Um aspecto importante pa
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/03/2011
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8. 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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9. Study foliated quartzite waste to be the used in structures pavements. / Estudo do resíduo de quartzito foliado para emprego em estruturas de pavimentos.
The purpose of this study is to present an alternative use for quartzite mining wastes as base or subbase materials of flexible pavements. This proposition may not only reduces environmental impacts of quartzite extraction, but also valorises the quartzite aggregates, mainly for road applications. In Brazil quartzite extraction process produces about 90% of
Publicado em: 2009
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10. Recovery of zinc, cadmium and copper from industrial residues in the zinc extraction metallurgy / Recuperação de zinco, cádmio e cobre de licores sulfúricos provenientes de resíduos industriais da metalurgia extrativa do zinco
Este trabalho apresenta o desenvolvimento de técnicas hidrometalúrgicos para o tratamento de licores gerados a partir de resíduos industriais da metalurgia extrativa do zinco. Um dos licores (ZnCu) contém teores significativos de zinco e cobre (29,6 g/L Zn e 37,4 g/L Cu) e o outro licor (ZnCd) contém elevados teores de zinco e cádmio (141 g/L Zn e 53,4
Publicado em: 2008
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11. Resíduos de mineração e metalurgia: efeitos poluidores em sedimentos e em espécie biomonitora - Rio Ribeira de Iguape - SP / Residues of mining and metallurgy: pollutant effect in sediments and biomonitor organism - River Ribeira de Iguape
For approximately 40 years, Ribeira de Iguape River received mining wastes (enriched in Cu, Cr, Pb, Ag and Zn) and metallurgical slags (enriched in Cu, Zn, Cr, Fe, Pb and As), produced and discharged by Plumbum S/A, a company located in Adrianópolis (Paraná). In order to verify the contribution of these residues in the river contamination and natural purif
Publicado em: 2007
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12. PREDIÇÃO DO POTENCIAL DE DRENAGEM ÁCIDA DE MINAS UTILIZANDO O MÉTODO CINÉTICO DA COLUNA DE LIXIVIAÇÃO / POTENTIAL PREDICTION OF ACID MINE DRAINAGE EMPLOYING LEACHING COLUMN KINETIC METHOD
The acid rock mine drainage (ARD) arising from sulfides oxidation in mining areas is a serious environmental problem that markedly affects the quality of the surrounding water. Choosing the measure for remediation and/or preventing pollution effect depends on a suitable evaluation through a prediction program, it has principally tests of the acid generation
Publicado em: 2007