2026-04-14T04:09:07Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1612202025-12-05T14:31:08Zcom_2072_1057col_2072_478917col_2072_478923

00925njm 22002777a 4500 dc Arancibia, J. R. H. author Alfonso Abella, María Pura author Garcia Vallès, Maite author Martínez Manent, Salvador author Parcerisa i Duocastella, David author Canet, C. author Romero, F. M. author 2020-05-19T08:31:29Z 2020-05-19T08:31:29Z 2013 2020-05-19T08:31:29Z 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. Mines Vidre Bolívia Mines and mineral resources Glass Bolivia Manufacturing of glass from tin mining tailings in Bolivia