454
M. Kaya et al.
Table 2
Optimum metal dissolution results obtained with inorganic acids at 1/10 S/L ratio
HCl
Zn (%)
Pb (%)
Fe (%)
0.50 M
40 °C
60 °C
80 °C
40 °C
60 °C
80 °C
40 °C
60 °C
80 °C
30 min
78
82
90
10
10
10
0
0
0
1.0 M
40 °C
60 °C
80 °C
40 °C
60 °C
80 °C
40 °C
60 °C
80 °C
30 min
86
90
92
8
10
10
2
5
10
H
2 SO
4
Zn (%)
Pb (%)
Fe (%)
0.5 M
40 °C
60 °C
80 °C
40 °C
60 °C
80 °C
40 °C
60 °C
80 °C
120 min
91
84
90
0
0
0
5
7
9
1.0 M
40 °C
60 °C
80 °C
40 °C
60 °C
80 °C
40 °C
60 °C
80 °C
60 min
92
95
97
0
0
0
12
15
26
HNO
3
Zn (%)
Pb (%)
Fe (%)
0.25 M
40 °C
60 °C
80 °C
40 °C
60 °C
80 °C
40 °C
60 °C
80 °C
30 min
70
55
42
23
22
22
0
0
0