2396 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
0
20
40
60
80
100
0 100 200 300 400 500
Time (s)
Mg (Baseline)
Mg (Air +CO2)
Mg (Air +STPP)
Mg (CO2 only)
Figure 8. Cumulative magnesium recovery vs flotation time for baseline case (air
flotation with no depressant), Air +CO
2 (air flotation with CO
2 as a depressant), Air +
STPP (air flotation with STPP as the depressant), CO
2 only (CO
2 gas for both flotation
and as a depressant)
0
4
8
12
16
20
0 100 200 300 400 500
Time (s)
Ni (Baseline)
Ni (Air +CO2)
Ni (Air +STPP)
Ni (CO2 only)
Figure 9. Cumulative nickel grade vs flotation time for baseline case (air flotation with
no depressant), Air +CO
2 (air flotation with CO
2 as a depressant), Air +STPP (air
flotation with STPP as the depressant), CO
2 only (CO
2 gas for both flotation and as a
depressant)
Recovery
(%)
Grade
(%)