Granulometric Analysis
Mostrando 1-12 de 41 artigos, teses e dissertações.
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1. Magnetic concentration route for recovering pellet feed fines stored in a mining dam
Abstract The greatest and noblest challenge of mining engineering for the present and the future of iron ore treatment could be considered as the pursuit of optimizing the use of mineral resources. The use of mining tailings, in the mineral sector itself, or in another industrial branch, meets the needs of circular economy as it increases the useful service
REM - International Engineering Journal. Publicado em: 2022
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2. Use of dynamic ballast testing equipment for analysis of rail aggregate breakdown
Abstract The granulometric range used has a direct influence on the life of the ballast layer when subjected to the load generated by rail traffic. However, in Brazil, we have only two size ranges to be used. The publications related to the subject matter under study express the need for a continuous grain size strip, different from the ones usually used in
REM, Int. Eng. J.. Publicado em: 2021-06
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3. Characterization of the solid residue generated in the detoxification step of sugarcane bagasse hemicellulosic hydrolysate and behavior in agricultural soils
ABSTRACT Overliming is an effective way of neutralizing and reducing the toxicity of the hydrolysates generated from acidic pretreatment of lignocellulosic biomass for ethanol production and others biotechnological products. Overliming generates a solid residue whose inadequate disposal may represent an environmental problem. This work aimed at the chemical
Bragantia. Publicado em: 2020-03
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4. Influência da incorporação da HAp e β-TCP no cimento ósseo wollastonita/brushita
RESUMO O elevado número de pacientes com problemas de saúde por doenças ósseas ou traumas tem promovido o desenvolvimento de pesquisas em biomateriais de modo a garantir uma melhor qualidade de vida. Dentre os diversos biomateriais, os cimentos ósseos poliméricos (PMMA) ou cerâmicos (fosfatos e silicatos de cálcio) destacam-se para aplicações em ci
Matéria (Rio J.). Publicado em: 16/09/2019
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5. A comparative study of particle size distribution using analysis of variance for sedimentation and laser diffraction methods
Resumo A análise granulométrica é uma ferramenta básica no processo de caracterização de materiais particulados, podendo ser obtida por vários métodos, destacando-se os métodos do densímetro e difração a laser. No entanto, estas técnicas são baseadas em princípios físicos distintos, que geram resultados diferentes, causando dúvidas. O objeti
Cerâmica. Publicado em: 15/08/2019
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6. Characterization of clays from the State of Paraíba, Brazil for aesthetic and medicinal use
Resumo Este trabalho teve como objetivo avaliar a potencialidade das argilas do estado da Paraíba, visando suas aplicações em tratamentos medicinais, terapêuticos e estéticos. As amostras das argilas foram caracterizadas pelas técnicas de difração de raios X, composição química por fluorescência de raios X, termogravimetria, análise térmica dif
Cerâmica. Publicado em: 2019-01
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7. Soil Water Retention Curve as Affected by Sample Height
ABSTRACT: The soil water retention curve is one of the main instruments to assess the soil physical quality and to improve soil management. Traditionally, the equipment most used in the laboratory to determine the retention curve has been Haines funnels and Richards chambers. An important factor to which little attention has been given in the use of these eq
Rev. Bras. Ciênc. Solo. Publicado em: 14/11/2018
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8. Analysis of generation and characterization of construction and demolition waste on construction sites in the city of Recife, Brazil
ABSTRACT In order to planning the Construction and Demolition Waste (CDW) management approach on a construction site, it is necessary to have a prior knowledge of what is being generated (qualitative analysis), the quantity that is being generated (quantitative analysis), and what is the proper final destination assigned to this material. This article propos
Matéria (Rio J.). Publicado em: 18/10/2018
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9. 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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10. Pharmacognostic evaluation, and development and validation of a HPLC-DAD technique for gallocatechin and epigallocatechin in rhizomes from Limonium brasiliense
ABSTRACT Limonium brasiliense (Boiss.) Kuntze, Plumbaginaceae, is a plant from the southern coast of Brazilian that is used for the treatment of premenstrual syndrome, menstrual disorders and genito-urinary infections. The aim of the present study was to determine the quality control parameters for rhizomes collected during different periods by pharmacopoeia
Rev. bras. farmacogn.. Publicado em: 2017-04
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11. ON THE SYNTHESIS OF MOLYBDENUM CARBIDE WITH COBALT ADDITION VIA GAS-SOLID REACTIONS IN A CH4/H2 ATMOSPHERE
Abstract Due to ever more severe environmental regulations regarding SOx, NOx and other pollutants' emissions, there has been an interest in developing new and improved catalysts for hydroprocessing reactions. Mo2C has been reported to display good selectivity and activity for those reactions, especially for HDS. Addition of another metal to the carbide stru
Braz. J. Chem. Eng.. Publicado em: 2016-09
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12. Morphological Interpretation of Reflectance Spectrum (MIRS) using libraries looking towards soil classification
The search for tools to perform soil surveying faster and cheaper has led to the development of technological innovations such as remote sensing (RS) and the so-called spectral libraries in recent years. However, there are no studies which collate all the RS background to demonstrate how to use this technology for soil classification. The present study aims
Sci. agric. (Piracicaba, Braz.). Publicado em: 2014-12