V.L. Barone, D. Gazzoli, I.D Lick, I.B. Schalamuk, I.L. Botto
V.L. Barone1, D. Gazzoli2, I.D Lick3, I.B. Schalamuk4 and I.L. Botto1*
1Cequinor (Conicet-La Plata), Facultad de Ciencias Exactas, Universidad Nacional de La Plat (Argentina)
2Dipartimento di Chimica, Universitá La Sapienza, Roma (Italia)
3Cindeca (Conicet-La Plata), Facultad de Ciencias Exactas, Universidad Nacional de La Plata (Argentina)
4Inremi (Cicpba), Facultad de Ciencias Naturales y Museo, Universidad Nacional de La Plata (Argentina)
Volume - 4,
Issue - 12,
Year - 2011
The thermal oxidation of enargite (Cu3AsS4) from Chuquicamata (Chile), has been studied between RT and 800ºC. Enargite samples were heated in air atmosphere and analyzed by means of several physicochemical techniques such as XRPD, SEM-EDS, FTIR, XPS and chemical analysis. A surface digenite formation was observed in a first step. The XPS technique was particularly useful to correlate the copper oxidation with the As-O-Cu interaction, responsible for the continuous and slow As evolution up to temperatures higher than 600ºC. These results must be considered of interest to reduce the negative environmental impact of the technological copper production from valuable Cu-ores where enargite is present.
Cite this article:
V.L. Barone, D. Gazzoli, I.D Lick, I.B. Schalamuk, I.L. Botto. Thermal and Spectroscopic Feature of the Cu3AsS4 Enargite Oxidation Up To 800ºC. Implications in the Arsenic Evolution. Asian J. Research Chem. 4(12): Dec., 2011; Page 1844-1850.