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AbstractAbstract
[en] The production of silicon carbide (SiC) in an industrial scale still by carbothermal reduction of silica. This study aims to identify, in a comparative way, among the common reducers like petroleum coke, carbon black, charcoal and graphite the carbothermal reduction of silica from the peat. It is shown, that the peat, also occurs in nature together with high purity silica sand deposits, where the proximity of raw materials and their quality are key elements that determine the type, purity and cost of production of SiC. Tests were running from samples produced in the electric resistance furnace with controlled atmosphere at temperatures of 1550 degree C, 1600 degree C and 1650 degree C, both the precursors and products of reaction of carbothermal reduction were characterized by applying techniques of X-ray diffraction, scanning electron microscopy (SEM) and Energy-Dispersive X-ray analysis Spectroscopy (EDS). The results showed the formation of SiC for all common reducers, as well as for peat, but it was not possible to realize clearly the difference between them, being necessary, specific tests. (author)
Original Title
Obtencao do carboneto de silicio pela reducao carbotermica da silica
Primary Subject
Source
2009; 63 p; Diss. (M.Sc.)
Record Type
Miscellaneous
Literature Type
Thesis/Dissertation; Numerical Data
Report Number
Country of publication
ADSORBENTS, ATMOSPHERES, CARBIDES, CARBON, CARBON COMPOUNDS, COHERENT SCATTERING, DATA, DIAGRAMS, DIFFRACTION, ELECTRON MICROSCOPY, ELEMENTS, ENERGY SOURCES, FOSSIL FUELS, FUELS, INFORMATION, MATTER, MICROSCOPY, MINERALS, NONMETALS, NUMERICAL DATA, ORGANIC MATTER, OXIDE MINERALS, SCATTERING, SILICON COMPOUNDS, SOLID FUELS, SPECTROSCOPY
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