Ornamental Rock
Mostrando 1-12 de 15 artigos, teses e dissertações.
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1. Use of ornamental rock residues for mould flux development
Abstract Ornamental rock production, such as marble and granite plates, have great importance in the southeastern region of Brazil. Its residues are composed of some compounds used in continuous casting as mould fluxes. Therefore, the aim of this article was to study these residues to formulate mould fluxes. First, the raw materials were chemically character
REM, Int. Eng. J.. Publicado em: 2018-07
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2. Characterization of mineral wools obtained from ornamental rock wastes
Abstract The study aimed to characterize the mineral wools obtained from wastes of the cutting step of marble and granite, in order to evaluate the possibility of their use on an industrial scale. Mixtures of marble and/or granite wastes were prepared in order to reach the chemical composition of rock and glass wools. The batches were melted in an electric a
REM, Int. Eng. J.. Publicado em: 2018-07
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3. Characterization of Ornamental Rock Residue and Potassium Liberation Via Organic Acid Application
ABSTRACT Organic acids present in organic matter and, or, exudates by microorganisms and plants can increase the liberation of potassium present in minerals. The objective of this study was to characterize the residue from ornamental rocks and evaluate the release of K from these residues after the application of organic acids. The experiment was conducted u
Rev. Bras. Ciênc. Solo. Publicado em: 26/04/2016
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4. CaracterizaÃÃo tecnolÃgica e radiomÃtrica de um diabÃsio da regiÃo de ApuiarÃs - CE / Technological characterization and radiometric a region of diabase ApuiarÃs - CE
This paper presents the technological and mineralogical characteristics of a diabase, which outcrop in the form of dike is located in the district CanafÃstula in ApuiarÃs - CE. In order to assess their qualities for application as ornamental, were carried out technological tests of fitness levels and physical-mechanical, based on standards from ABNT, as we
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/01/2011
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5. Determination of parameters of the polishing in three types of granitic rocks / Determinação de parâmetros do polimento, em três tipos de rochas graníticas
The ornamental stones polishing in the industry is considered an empirical process. In this process, variables such as time, rotation speed and intensity of the load applied are combined in different operation conditions to obtain the desired brightness. Using the Polishing Rocks Simulator (SPR), this present research aims to obtain information about which c
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/08/2010
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6. Análise e avaliação dos problemas existentes na fachada de arenito do Museu Júlio de Castilhos, Porto Alegre, RS
The Júlio de Castilhos museum of Porto Alegre, formerly used as residence, was built in 1877 by a military engineer Catão Roxo. This building is one of the few examples of urban architecture from the last part of the nineteenth century. Its façade is covered by arenitic and granitic rocks quarried near the city. The covering shows the effects of weatherin
Publicado em: 2010
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7. Caracterização e classificação de resíduo sólido "pó de rocha granítica" gerado na indústria de rochas ornamentais
The ornamental rock industry generates huge amounts of wastes during the process of extraction and sawing of rock blocks. The ornamental rock powder waste is a non-biodegradable material, which represents the increase in environmental problem. The waste was collected from a granitic rock sawing plant located in Santo Antônio de Pádua, Rio de Janeiro. The c
Química Nova. Publicado em: 2008
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8. Estudo geoestrutural do maciÃo de Granito Vermelho Frevo SertÃnia-PE
The purpose of this report is to recommend a new methodology for prospecting ornamental rocks massifs. This is why it is important to supply the technical staff, for the future operations of mining of knowledgement of the petrographic and physical-mechanical features of the rock to be extracted and the regime of tensions to be submitted to define the best sy
Publicado em: 2008
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9. Estado da arte na alterabilidade de placas pÃtreas: estudo de casos na regiÃo litorÃnea do Recife â PE
The importance of ornamental rocks in architecture is historical; either to the internal areas or to the external ones. Thus, in this study, covering alterability and durability regarding with stony plates in located land external faÃades in the sea shore of Recife are discussed. The civil construction industry uses, in workmanship, the most varied types of
Publicado em: 2008
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10. OcorrÃncia de quartzito verde â esmeralda no municÃpio de Lajes/RN e sua viabilidade como rocha ornamental
Esta pesquisa envolve o estudo de um jazimento de fucsita-quartzito situado no MunicÃpio de Lajes-RN. O mapeamento deste litossoma e as determinaÃÃes de suas caracterÃsticas fÃsicas foram realizados com o objetivo de se avaliar a viabilidade de seu aproveitamento econÃmico para fins ornamentais. O mapeamento geolÃgico de detalhe, na escala de 1:2.000,
Publicado em: 2008
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11. PURIFICAÇÃO DE AREIAS PROVENIENTES DE RESÍDUOS DE PEDREIRA DE QUARTZITO POR FLOTAÇÃO
The sands of quartzite, object of this study come from the region of Ouro Preto and Mariana constitute the minings waste of the rock, which is extracted mainly to be used in civil construction like ornamental purposes in the form of plates of floors and coatings. The mining and beneficiation of quartz in the region generates a large quantity of waste which a
Publicado em: 2007
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12. Aspectos relacionados às lavras de granitos ornamentais com fio diamantado no norte do estado do Espírito Santo, Brasil / Aspects related to quarries of ornamental granites with diamond wire in the north of Espirito Santo state, Brazil
The use of the diamond wire in quarries of ornamental granites in Brazil is a relatively recent technique of cut and, for this reason, some problems are decurrent, mainly, of the incorrect use of the equipment, as well as of the lack of experience of operators. The cases here presented report the observations in quarries located in the state of Espirito Sant
Publicado em: 2006