TY - JOUR
T1 - Raman spectroscopy characterization of some Cu, Fe and Zn sulfides and their relevant surface chemical species for flotation
AU - Vázquez-Sánchez, E. Emmanuel
AU - Robledo-Cabrera, Aurora
AU - Tong, Xiong
AU - López-Valdivieso, Alejandro
N1 - Publisher Copyright:
© Wroclaw University of Science and Technology.
PY - 2020
Y1 - 2020
N2 - Raman spectroscopy as a high-resolution characterization technique was used to analyze various pure metal sulfides immersed in water, namely pyrite (FeS2), chalcopyrite (CuFeS2), sphalerite (ZnS), marmatite (Zn1-XFeXS) and galena (PbS). The Raman characterization was undertaken in situ with the minerals immersed in water. Characteristic Raman spectrum that shows the vibrational modes of the atomic bonds in the mineral crystal structure is reported. This spectroscopic technique revealed that marmatite particles are composed of micro-size, perhaps nano-size, zones with different Fe and Zn content. With the intensity of the Fe-S and Zn-S Raman signals, the iron content of the zones was quantified. The copper ion up-take by marmatite particles was studied through this technique. It was found that the up-take of copper ions on the marmatite zones depended on their Fe content. Copper ion up-take occurred more preferentially on the zones of low Fe content than on those of high Fe content. The adsorption of the collector propyl xanthate on pyrite and chalcopyrite was also assessed by Raman spectroscopy. The Raman spectrum revealed that dixanthogen formed on the surface of these sulfides.
AB - Raman spectroscopy as a high-resolution characterization technique was used to analyze various pure metal sulfides immersed in water, namely pyrite (FeS2), chalcopyrite (CuFeS2), sphalerite (ZnS), marmatite (Zn1-XFeXS) and galena (PbS). The Raman characterization was undertaken in situ with the minerals immersed in water. Characteristic Raman spectrum that shows the vibrational modes of the atomic bonds in the mineral crystal structure is reported. This spectroscopic technique revealed that marmatite particles are composed of micro-size, perhaps nano-size, zones with different Fe and Zn content. With the intensity of the Fe-S and Zn-S Raman signals, the iron content of the zones was quantified. The copper ion up-take by marmatite particles was studied through this technique. It was found that the up-take of copper ions on the marmatite zones depended on their Fe content. Copper ion up-take occurred more preferentially on the zones of low Fe content than on those of high Fe content. The adsorption of the collector propyl xanthate on pyrite and chalcopyrite was also assessed by Raman spectroscopy. The Raman spectrum revealed that dixanthogen formed on the surface of these sulfides.
KW - Activation
KW - Chalcopyrite
KW - Copper
KW - Galena
KW - Marmatite
KW - Pyrite
KW - Raman spectroscopy
KW - Sphalerite
UR - http://www.scopus.com/inward/record.url?scp=85085136152&partnerID=8YFLogxK
U2 - 10.37190/PPMP/119763
DO - 10.37190/PPMP/119763
M3 - Artículo
AN - SCOPUS:85085136152
SN - 1643-1049
VL - 56
SP - 483?492
JO - Physicochemical Problems of Mineral Processing
JF - Physicochemical Problems of Mineral Processing
IS - 3
M1 - 9763
ER -