2154 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
0.0
0.7
1.4
0.0
0.7
1.4
0.0
0.7
1.4
-20 -15 -10 -5 0 5 10 15 20
-0.2
0.0
0.2
E
F
Zn 3d
Surface Zn before adsorption s
p
d
S 3s
S 3p
Xanthane S before adsorption
S 3s
S 3p
Zn 3d Surface Zn-S(EX) after adsorption
Energy (eV)
COHP
Figure 6. DOS of S atom of ethyl xanthate and clean sphalerite surface Zn atom before and after
adsorption
0.0
0.7
1.4
0.0
0.7
1.4
0.0
0.7
1.4
-20 -15 -10 -5 0 5 10 15 20
-0.3
0.0
0.3
Cu 3d
E
F Surface Cu before adsorption s
p
d
S 3s
S 3p
Xanthane S before adsorption
S 3s S 3p
Cu 3d
Surface Cu-S(EX) after adsorption
Energy (eV)
COHP
Figure 7. DOS of S atom of ethyl xanthate and Cu-activated sphalerite surface Cu atom before
and after adsorption
Density
of
State(electrons/eV)
COHP
Density
of
State(electrons/eV)
COHP