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
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