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Examples of sulfur recovery from lead and zinc tailings (Guangdong, Guangdong, Guangdong)
And Northern Region west Guangdong lead zinc flotation tailings using multiple spiral chute reselection recovery of pyrite tailings. The mineral composition of the lead-zinc flotation tailings in Yuebei and Yuexi, the single mineral analysis of pyrite , the multiple analysis of lead and zinc tailings, and the screening analysis are shown in Tables 1 to 4.
Table 1 Mineral composition
Yuebei lead-zinc tailings
Yuexi lead-zinc tailings
And a small amount of pyrite galena, sphalerite; gangue in sericite, quartz, calcite, chlorite most, dolomite and the like.
Pyrite, a small amount of lead-zinc minerals and red and limonite; gangue minerals are quartz, feldspar , kaolinite, sericite, dolomite, calcite.
Table 2 Analysis of single minerals of sulfur-iron and sulfur in northern Guangdong (%)
ingredient
S
Fe
Pb
Zn
Cu
total
Quality score
52.73
43.35
0.49
0.071
0.005
96.85
Table 3 Multiple analysis of lead and zinc tailings in Yuebei (%)
ingredient
S
As
SiO 2
Al 2 O 3
CaO
Ag(g/t)
Quality score
30.5
0.21
16.33
2.80
7.21
64.0
Table 4 Screening analysis results (%)
Size/mm
North Guangdong
Western Guangdong
Yield
grade
Distribution rate
Yield
grade
Distribution rate
+0.2
7.06
14.85
3.73
-
-
-
-0.20+0.10
27.00
23.22
22.31
7.16
2.32
0.71
-0.10+0.076
12.25
33.54
14.62
30.18
14.37
18.68
-0.076+0.043
18.87
35.92
24.12
24.55
31.85
33.68
-0.043+0.030
6.08
38.85
8.41
17.65
32.85
24.96
-0.030
28.74
26.21
26.81
20.46
24.93
21.97
total
100.00
31.46
100.00
100.00
23.22
100.00
In the test, the lead-zinc tailings were sorted by a spiral chute (see Figure 1 for the process) to obtain a pyrite concentrate with a grade of 39.75% to 44.08% and a recovery rate of 58% to 74%.
Figure 1 Test process of Yuebei lead-zinc tailings