TY - JOUR
T1 - Behavior of gallium and germanium associated with zinc sulfide concentrate in oxygen pressure leaching
AU - Liu, Fupeng
AU - Liu, Zhihong
AU - Li, Yuhu
AU - Wilson, Benjamin P.
AU - Lundstrom, Mari
PY - 2017
Y1 - 2017
N2 - The Fankou zinc concentrate (Guangdong province, China) was mineralogically characterized and results showed that the main germanium-bearing minerals in the sample comprised of zinc sulfide and galena, whereas gallium-bearing minerals were pyrite, sphalerite and silicate. Oxygen pressure leaching of zinc sulfide concentrate was carried out in order to investigate the effect of pressure, leaching time, sulfuric acid and copper concentrations on the leaching behavior of gallium and germanium. Under optimum conditions, leaching of Zn, Fe, Ge and Ga reached 98.21, 90.45, 97.45 and 96.65%, respectively. In the leach residues, it was determined that some new precipitates, such as PbSO4, CaSO4 and SiO2, were formed, which co-precipitated a certain amount of Ga and Ge from the leach solution. The results clearly indicated that Ga and Ge were much more difficult to leach than Zn, and provided answers to why the leaching efficiency of Ga is 10% lower when compared to Ge.
AB - The Fankou zinc concentrate (Guangdong province, China) was mineralogically characterized and results showed that the main germanium-bearing minerals in the sample comprised of zinc sulfide and galena, whereas gallium-bearing minerals were pyrite, sphalerite and silicate. Oxygen pressure leaching of zinc sulfide concentrate was carried out in order to investigate the effect of pressure, leaching time, sulfuric acid and copper concentrations on the leaching behavior of gallium and germanium. Under optimum conditions, leaching of Zn, Fe, Ge and Ga reached 98.21, 90.45, 97.45 and 96.65%, respectively. In the leach residues, it was determined that some new precipitates, such as PbSO4, CaSO4 and SiO2, were formed, which co-precipitated a certain amount of Ga and Ge from the leach solution. The results clearly indicated that Ga and Ge were much more difficult to leach than Zn, and provided answers to why the leaching efficiency of Ga is 10% lower when compared to Ge.
KW - Gallium
KW - Germanium
KW - Oxygen pressure leaching
KW - Pyrite
KW - Zinc sulfide concentrate
UR - http://www.scopus.com/inward/record.url?scp=85019748670&partnerID=8YFLogxK
U2 - 10.5277/ppmp170229
DO - 10.5277/ppmp170229
M3 - Article
AN - SCOPUS:85019748670
VL - 53
SP - 1047
EP - 1060
JO - Physicochemical Problems of Mineral Processing
JF - Physicochemical Problems of Mineral Processing
SN - 1643-1049
IS - 2
ER -