2013
DOI: 10.5935/0100-929x.20130007
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Caracterização tecnológica para aproveitamento de matéria-prima sienítica com nefelina

Abstract: Rochas sieníticas com nefelina que ocorrem em Lavrinhas (SP), a 234 km a nordeste da cidade de São Paulo, podem constituir-se numa potencial fonte mineral para fabricação de materiais cerâmicos. Com base na mineralogia e textura dessa matériaprima, buscou-se determinar os melhores métodos de beneficiamento mineral desse corpo sienítico como fundente. Também foram realizadas análises químicas e ensaios de fusibilidade para avaliar a cor de fusão do material antes e após a separação magnética, assim como seu pot… Show more

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“…The scarcity of some raw materials such as sand, as well as an attempt of diminishing the impact of urbanization on the environment, has led to several researches on the incorporation of disposals in concrete, such as tire rubber, coal ashes and casting sand [6][7][8]. Syenite is an igneous rock with high levels of sodic and potassic feldspars, which may contain 80% to 95% of feldspars and feldspathoids in its totality [9]. The syenite from 'Maciço da Pedra Branca', in Minas Gerais State, Brazil, has been used as ornamental rocks due to its brown color resulting from the mineralogical composition.…”
Section: Introductionmentioning
confidence: 99%
“…The scarcity of some raw materials such as sand, as well as an attempt of diminishing the impact of urbanization on the environment, has led to several researches on the incorporation of disposals in concrete, such as tire rubber, coal ashes and casting sand [6][7][8]. Syenite is an igneous rock with high levels of sodic and potassic feldspars, which may contain 80% to 95% of feldspars and feldspathoids in its totality [9]. The syenite from 'Maciço da Pedra Branca', in Minas Gerais State, Brazil, has been used as ornamental rocks due to its brown color resulting from the mineralogical composition.…”
Section: Introductionmentioning
confidence: 99%