Re-election of non-ferrous metal tailings

Shaanxi Qinling Molybdenum Mine recovers lead , sulfur and iron from tailings
See the table for the results of chemical analysis of selected molybdenum tailings in Qinling Molybdenum Mine, Shaanxi Province.

Tailings chemical multiple analysis results
H——001
element
S
Pb
TTe
Au
As
Cu
Mo
Magnetite iron
Poor tailings
content(%)
4.53
0.50
7.39
0.15
0.001
0.01
0.031
2.23
H——002
element
S
Pb
TTe
Au
As
Cu
Mo
Magnetite iron
Poor tailings
content(%)
8.84
0.52
13.13
0.18
0.001
0.01
0.037
4.03

Note: Gold in the table is gram / ton
The comprehensive recovery sample of tailings is H001 (poor ore sample). As shown in Table 1, the elements available for recovery in H-001 are lead: 0.50%, sulfur: 4.53%, and iron: 7.39%. Lead and sulfur can be floated well, and it is more suitable to use flotation. Flotation tailings are iron.
The recycling process is: lead, sulfur mixed, two fine, lead and sulfur separation, two sweeps, sweeping tailings magnetic separation, closed circuit test. The process is shown in the figure.

Experimental results: lead concentrate grade 54.50%, lead recovery rate 68.0%, sulfur concentrate grade 48.94%, sulfur recovery rate 76.91%, iron concentrate grade 68.55%, iron recovery rate 25.54%. Three qualified products are available using this process. The annual profit can be about 4 million yuan.

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