Scrap
Mostrando 1-12 de 71 artigos, teses e dissertações.
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1. Análise do desempenho de adensamento da massa refratária de sílica usada em fornos de indução
Resumo As indústrias de fundição de ferro fundido usam em seu processo grande quantidade de sucata zincada, o que tem contribuído para a redução da campanha do revestimento refratário de fornos de indução a cadinho já que o vapor de zinco formado no aquecimento migra para o centro do refratário, condensando em regiões externas do forno, próximo
Cerâmica. Publicado em: 14/11/2019
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2. Properties of concrete manufactured with use of ceramic sanitary ware waste as aggregate
RESUMO Na fabricação do concreto, cimento (o Portland é o mais usado), água e agregados (classificados em finos e grossos), são usados. Com a utilização de inúmeras matérias-primas, a geração de resíduos é inevitável, seja na construção civil ou em outros setores, como as indústrias produtoras de materiais cerâmicos. Entre os tipos de resí
Matéria (Rio J.). Publicado em: 10/06/2019
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3. First evaluation of semidirect recycling methods for the reclamation of cemented carbides based on a literature survey
ABSTRACT At the moment the industrially applied techniques for cemented carbide reclamation feature several deficiencies. Depending on the process route, obstacles consist in high energy and chemical consumption (indirect recycling methods) or a deterioration of the recycled product in comparison with the primary material (direct recycling approach). Therefo
Matéria (Rio J.). Publicado em: 19/07/2018
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4. Microstructural, thermochemistry and mechanical evaluation of self-reducing pellets using electric arc furnace (EAF) dust containing zinc for Waelz process
ABSTRACT The increment of recycling of steel using electric arc furnace and the tendency to coat of steel products with zinc, in order to prevent corrosion, has increased the proportion of galvanized scrap used worldwide in the recent years. Approximately 10 to 20 Kg/t of cast steel is generated in casting arcs. These collected dusts electric arc furnace (EA
Matéria (Rio J.). Publicado em: 19/07/2018
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5. SEM study of a lead-iron slag flotation process
Abstract Companies producing lead-acid batteries are required by law to recycle their battery scrap. The recycling can be performed by a pyrometallurgical process resulting in slags containing mainly lead and iron. A study was carried out with the aim of recovering the lead contained in this slag. This work has economic and environmental implications. Slag c
REM, Int. Eng. J.. Publicado em: 2018-07
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6. Reuse of waste paper and rice hulls as filler in polymeric matrix composites
ABSTRACT Concerns for the environment are recurrent in our society, and research on low impact materials such as those produced from waste is an alternative. This work is based on the reuse of scrap paper and rice hulls aiming to increase the life cycle of these waste products and to find better destination. Composites with a volumetric filler content (dispe
Matéria (Rio J.). Publicado em: 20/07/2017
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7. Spark Plasma Sintering of a Hard Metal Powder Obtained from Hard Metal Scrap
Spark plasma sintering is used to consolidate a WC-Co powder produced from milled discharged hard metal cutting inserts. The powder was mixed to 10%wt Co powder and spark plasma sintered (SPS) under 80Mpa pressure, at 1200ºC with heating rate of 160ºC/min. A reference alloy was prepared with a commercial WC powder and 10%wt. Co under the same conditions. T
Mat. Res.. Publicado em: 13/03/2017
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8. Characterization of Metallurgical Coke Produced with Coal Mixtures and Waste Tires
The use of scrap tires in the coal blends is an alternative to reduction of coke production costs as well as mitigates the impact caused by tire accumulation in the environment. Tests were carried out on a pilot scale, with coal blends and waste tire in 4 levels and 3 particle sizes, in order to assess the impact on the produced coke quality, especially on t
Mat. Res.. Publicado em: 03/05/2016
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9. Evaluation of the milling efficiency increase of AISI 52100 steel using niobium carbide addition through high energy ball milling
The AISI 52100 is a tool-type steel and is more often used in industry for the production of bearings. After the end of its life cycle, it is discarded or remelted, but both processes are considered expensive. Thus, the possibility of reusing this material through the powder metallurgy (PM) route is considered advantageous, since it transforms a waste into a
Rem: Rev. Esc. Minas. Publicado em: 2015-09
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10. Development and characterization of post-consumer rubber tire powder, high density polyethylene and ethylene-octene-1copolymer ternary mixtures
Scrap tires are considered a type of waste that litters landfills and the environment in general. Due to its chemically cross-linked structure, this material cannot be recycled by conventional processes because it does not melt. This work examined the production of polymeric composites using high density polyethylene (HDPE) filled with rubber tire powder (RT
Polímeros. Publicado em: 2014-12
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11. Cash for your trash: scrap recycling in America
Horiz. antropol.. Publicado em: 2014-06
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12. Geometric effects of sustainable auxetic structures integrating the particle swarm optimization and finite element method
The development of new materials based on industrial wastes has been the focus of much research for a sustainable world. The growing demand for tyres has been every year exacerbating environmental problems due to indiscriminate disposal in the nature, making a potentially harmful waste to public health. The incorporation of rubber particles from scrap tyres
Mat. Res.. Publicado em: 11/03/2014