Silica-soda-lime glass production from solid wastes generated by São Tomé stones processing and its characterization

Reference	Presenter	Authors (Institution)	Abstract
13-026	Julia Santos Pereira	Pereira, J.S.(CENTRO FEDERAL DE EDUCAÇÃO TECNOLÓGICA DE MINAS GERAIS); Abreu, W.M.(Secretaria Municipal de Meio Ambiente de Belo Horizonte); Cardoso, A.V.(Universidade do Estado de Minas Gerais);	São Tomé stones are a type of quartzite found in the southeast of Brazil (Minas Gerais state) that exhibits low thermal conductivity, high hardness, low water absorption index and also is slip resistant. For these reasons, this stone is widely used in construction, and in order to supply this demand, its extraction is increasing together with the amount of stone fragments left as waste. Therefore, great quantity of solid waste is generated and accumulated, conducing to expressive environmental impacts, such as native vegetation removal. After all given, it is necessary to develop solutions to minimize these impacts. In this sense, this work aims to characterize and evaluate the silica-soda-lime glass produced by the solid wastes generated during São Tomé stones processing. The material used for glass production was the sludge obtained by cutting São Tomé stones to produce tiles and it was collected at a company located in Belo Horizonte - MG. The material formed was characterized by X-Ray Diffraction (XRD), Differential Thermal Analysis (DTA), Termogravimetric Analysis (TGA) and Optical Transmittance. The produced glass displayed a light green color and low bubble formation, providing good perspectives about its mechanical properties. The preliminary analysis of the glass samples indicates the potential use of this solid waste as raw material for glass artifacts.
<< Back