Conveyor Belt
Mostrando 1-12 de 19 artigos, teses e dissertações.
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1. Corrigendum
Abstract Reconciliation plays a key role in controlling and analysing mine operations. It consists in comparing model estimates with actual results produced by the plant, being used as an indicator, a monitoring tool. Discrepancies between these values are common in the mining industry and they highlight problems during processing steps. However, these discr
Braz. J. Psychiatry. Publicado em: 2020-12
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2. Reconciliation of sampling data and heterogeneity analysis of a bauxite mine in Poços de Caldas/MG, in Brazil
Abstract Reconciliation plays a key role in controlling and analysing mine operations. It consists in comparing model estimates with actual results produced by the plant, being used as an indicator, a monitoring tool. Discrepancies between these values are common in the mining industry and they highlight problems during processing steps. However, these discr
REM, Int. Eng. J.. Publicado em: 2020-12
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3. Exposição ocupacional ao mercúrio em cooperativas de triagem de materiais recicláveis da região metropolitana de São Paulo, SP, Brasil
Resumo A exposição ocupacional ao mercúrio (Hg) foi avaliada em 4 cooperativas de materiais recicláveis por meio de amostragens de ar em 9 áreas (monte de triagem, balança, prensa, sala de resíduos de equipamentos eletroeletrônicos-REEE, refeitório, escritório, empilhadeira, esteira e pátio externo). Das 83 amostras, apenas 14,5% apresentaram conc
Ciênc. saúde coletiva. Publicado em: 02/05/2019
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4. Valorization of mining waste from Ouenza iron ore mine (eastern Algeria)
Abstract The present article is devoted to the development of a hematite-poor ore mine in Ouenza, which does not meet the steelmaker's requirements. Significant volumes are stored at the pithead of the mine, and the reserves are estimated at over 100 million tones. This enormous quantity of mining waste occupies an important space and poses a real threat to
REM, Int. Eng. J.. Publicado em: 2017-03
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5. Feasibility project for implementation of conveyor belts in an iron ore mine. Study case: Fabrica Mine in Minas Gerais State, Brazil
Abstract This article objectifies the implementation of a conveyor belt in an iron ore mine. The mine operational costs of the company Vale S.A. have a tendency to increase in coming years. This increase is related to the rising price of labor, fuel, tires, maintenance costs and large transport distances. Meanwhile, environmental impacts also need to be redu
Rem: Rev. Esc. Minas. Publicado em: 2016-03
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6. Waste disposal using a spreader and conveyor belt method
Abstract In the search for opportunities to decrease operational costs in iron ore mining, waste disposal by conveyor belt has been considered as an alternative. In this work, this form of waste dump is investigated by means of the construction of a test pile and the assessment of geotechnical characteristics such as shear strength and in situ densities. Res
Rem: Rev. Esc. Minas. Publicado em: 2015-12
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7. Synthesis and characterisation of polymeric nanofibers poly (vinyl alcohol) and poly (vinyl alcohol)/silica using indigenous electrospinning set up
Indigenous design and fabrication horizontal of electrospinning set up was developed to facilitate with double drum conveyor belt system to make ease in harvesting nanofibers rapidly. As a bench mark study, organic-inorganic nanofiber composite was synthesised employing our indigenous electrospinning set up. The aqueous solution of poly (vinyl alcohol) and p
Mat. Res.. Publicado em: 02/04/2013
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8. Desidratação parcial de tomate cereja em secador de bandejas vibradas com reciclo
In this essay, it has been analyzed the partial dehydration of oval cherry tomato Lycopersicum sp. Mill, by using a vibrated tray dryer with recycle until the tomatoes reached 15% of its initial water content what represents 70,19% of humidity in wet basis or 2,35 kg of water/kg of dry mass in dry basis. The dryer used consists basically of a vertical dryer
Publicado em: 2011
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9. Polietismo e expectativa de vida em operárias de Atta laevigata / Polyethism and lifespan in Atta laevigata workers
Age polyethism is the change in activities carried out by members of a colony during its life. Older individuals have lower future value to the colony, so it would be better for the colony if they could perform more dangerous tasks outside the nest and not return to its interior. Thus, the risk of bringing pathogens into the colony is reduced, protecting int
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/02/2010
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10. Viabilização técnica e econômica da lavra contínua de minério de ferro com o uso de sistema de britagem móvel in pit auto propelido
The conventional mining methods employed in most iron ore mines around the world are based in truck haulage. Starting in 1977, Samarco S/A has successfully introduced an innovative mining method in its iron ore mine located in Mariana, MG, Brazil. Samarcos mining method, known as belt conveyor-based mining, has replaced haul trucks for belt conveyors on the
Publicado em: 2010
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11. Metodologia de simulação por elementos finitos de polias para transportadores de correia de grandes capacidades utilizando o programa ANSYS Workbench / Methodology for simulation by finite element analysis of pulleys for belt conveyor with large capacity using the program ansys workbench
O trabalho apresenta uma metodologia de simulação por elementos finitos para dimensionamento e verificação estrutural de polias para transportadores de correia de grandes capacidades utilizando o programa ANSYS Workbench. A metodologia pode ser aplicada a qualquer tipo de polia que possua características funcionais semelhantes as da aplicação estudada
Publicado em: 2010
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12. Volume and heat transports in the world oceans from an ocean general circulation model
O monitoramento dos transportes de volume e calor nos oceanos é de fundamental importância para o estudo do sistema climático, sua variabilidade e possíveis mudanças. A aplicação de Modelos de Circulação Global dos Oceanos em estudos climáticos necessita que os dados dinâmicos e termodinâmicos gerados pelos mesmos se encontrem em equilíbrio. Ess
Revista Brasileira de Geofísica. Publicado em: 2009-06