Publicação: Glass-ceramic material from the SiO 2-Al 2O 3-CaO system using sugar-cane bagasse ash (SCBA)
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Data
2011-08-31
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Resumo
Brazil is the world's largest producer of alcohol and sugar from sugarcane. Currently, sugarcane bagasse is burned in boilers to produce steam and electrical energy, producing a huge volume of ash. The major component of the ash is SiO 2, and among the minor components there are some mineralizing agents or fluxing. Published works have shown the potential of transforming silicate-based residues into glass-ceramic products of great utility. This work reports the research results of SCBA use to produce glass-ceramics with wollastonite, rankinite and gehlenite as the major phases. These silicates have important applications as building industry materials, principally wollastonite, due to their special properties: high resistance to weathering, zero water absorption, and hardness among others. The glasses (frits) were prepared mixing ash, calcium carbonate and sodium or potassium carbonates as flux agents, in different concentrations. X-ray fluorescence was used to determine the chemical composition of the glasses and their crystallization was assessed by using thermal analysis (DTA/DSC/TGA) and X-ray diffraction. The crystallization kinetics was evaluated using the Kissinger method, giving activation energies ranging from 200 to 600 kJ/mol. © 2011 Ceramic Society of Japan.
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Building industry, Chemical compositions, Electrical energy, Gehlenite, Glass-ceramic materials, High resistance, Kissinger methods, Mineralizing agents, Minor components, Potassium carbonates, Research results, Special properties, Sugar-cane bagasse, X ray fluorescence, Activation energy, Bagasse, Boilers, Calcium carbonate, Ceramic plants, Ceramic products, Construction industry, Crystallization kinetics, Engineering research, Glass ceramics, Potassium, Secondary batteries, Silicate minerals, Silicon compounds, Sodium, Sugar cane, Thermoanalysis, Water absorption, X ray diffraction, X ray diffraction analysis, Sugars
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Inglês
Como citar
IOP Conference Series: Materials Science and Engineering, v. 18, n. SYMPOSIUM 8, 2011.
