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Title: Manufacturing of glass from tin mining tailings in Bolivia
Author: Arancibia, J. R. H.
Alfonso Abella, María Pura
Garcia Vallès, Maite
Martínez Manent, Salvador
Parcerisa i Duocastella, David
Canet, C.
Romero, F. M.
Keywords: Mines
Mines and mineral resources
Issue Date: 2013
Publisher: Consejo Superior de Investigaciones Científicas (CSIC)
Abstract: Tailings from mining activities in Bolivia represent an environmental problem. In the vicinity of the tin mines of Llallagua, Potosí department, there are large dumps and tailings. We present a study of the use of these wastes as raw materials for the manufacture of glass. This procedure aims to contribute to environmental remediation of mining areas through the vitrification, a process which offers an alternative for stabilization of hazardous waste. In addition, the marketing of the obtained product would provide an additional income to the mining areas. For this study three samples of mining waste, with grain size between sand and silt, were used. The chemical composition of these raw materials, determined by X-ray fluorescence, is granitic, with high contents of heavy metals. On the basis of its composition, glass were made from silica glass by adding CaCO3 and Na 2CO3. The thermal cycle has been determined from TDA. Tg values of glass range from 626° to 709 °C. Leaching tests of the obtained glasses confirm their capacity to retain heavy metals.
Note: Reproducció del document publicat a:
It is part of: Boletin de la Sociedad Española de Ceramica y Vidrio, 2013, vol. 52, num. 3, p. 143-150
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ISSN: 0366-3175
Appears in Collections:Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)

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