Caracterização de Vidros Sódico-cálcicos Produzidos a Partir de Resíduos Sólidos
B.G.O. Maia, M.T. Souza, S. Arcaro, T.M.N. de Oliveira, T.B. Wermuth, A.P. Novaes de Oliveira, J.B. Rodrigues Neto
Resumo
Neste trabalho foram utilizadas cascas de ovos e conchas de ostras (como fontes de óxido de cálcio) e cinzas de casca de arroz (como fonte de sílica), para a produção de vidros sódico-cálcicos, tipicamente empregados para a produção de embalagens. Diferentes proporções destes resíduos e demais matérias-primas complementares foram preparadas e fundidas, em cadinho de platina, a 1550 °C por 2 h para a produção de amostras de vidros, que, em uma etapa posterior, foram caracterizadas quanto as suas propriedades físicas, químicas e térmicas. Foram obtidos vidros transparentes incolores e de coloração âmbar com propriedades similares àquelas de vidros comerciais de mesma natureza química.
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Referências
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