TY - JOUR
T1 - Roman and modern slag at S. Domingos mine (IPB, Portugal)
T2 - Compositional features and implications for their long-term stability and potential reuse
AU - Mateus, A.
AU - Pinto, A.
AU - Alves, L. C.
AU - Matos, J. X.
AU - Figueiras, J.
AU - Neng, N. R.
PY - 2011/6
Y1 - 2011/6
N2 - S. Domingos ores have been exploited for Cu and S from antiquity to 1966. Slag is composed of Fe-, Ca-, Zn- and Pb-rich silicate glass, fayalite, hedenbergite, Fe-spinel, and blebs of Fe-, Cu-, Zn- (and Pb-)sulphides, minor sulphosalts and Cu-Zn-Pb-iss with evidence for low-T exsolution and reactions. Silicates and oxides often crystallised far from equilibrium out of undercooled melts. Weathering leads to Fe-(hydro)oxide + digenite ± Fe-, Cu- and Pb-sulphate, Ca, Zn and Pb loss from glass and acid drainage. The slag is an excellent aggregate raw material but its chemical instability calls for preliminary processing, which might lead to economic metal recovery.
AB - S. Domingos ores have been exploited for Cu and S from antiquity to 1966. Slag is composed of Fe-, Ca-, Zn- and Pb-rich silicate glass, fayalite, hedenbergite, Fe-spinel, and blebs of Fe-, Cu-, Zn- (and Pb-)sulphides, minor sulphosalts and Cu-Zn-Pb-iss with evidence for low-T exsolution and reactions. Silicates and oxides often crystallised far from equilibrium out of undercooled melts. Weathering leads to Fe-(hydro)oxide + digenite ± Fe-, Cu- and Pb-sulphate, Ca, Zn and Pb loss from glass and acid drainage. The slag is an excellent aggregate raw material but its chemical instability calls for preliminary processing, which might lead to economic metal recovery.
KW - Long-term slag stability
KW - Metal-rich slag
KW - Ore-processing wastes
KW - Slag reuse potential
UR - http://www.scopus.com/inward/record.url?scp=79959854947&partnerID=8YFLogxK
U2 - 10.1504/IJEWM.2011.040971
DO - 10.1504/IJEWM.2011.040971
M3 - Article
AN - SCOPUS:79959854947
SN - 1478-9876
VL - 8
SP - 133
EP - 159
JO - International Journal of Environment and Waste Management
JF - International Journal of Environment and Waste Management
IS - 1-2
ER -