3632 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
Table 8. Mineral composition of pre-concentration products
Mineral Chemical Formula
Proportion (%)
Concentrate Tailings
Quartz SiO2 31.9 58.2
Magnetite Fe
3 O
4 37.9 16.3
Hematite Fe
2 O
3 13.9 2.7
Ferrosilite Fe2Si2O6 8.2 10.2
Dolomite CaMg(CO3)2 2.6 3.3
Diopside CaMgSi
2 O
6 3.3 4.2
Calcite CaCO
3 1.4 3.0
Hornblende Ca2Fe5Si7AlO22(OH)2 0.3 1.3
Talc Mg3Si4O10(OH)2 0.4 0.7
Figure 8. Mineral’s recovery
Table 9. Liberation results
Mineral
Proportion (%)
Concentrate Tailings
Liberated Middlings Locked Liberated Middlings Locked
Quartz 78.0 20.2 1.8 59.4 38.5 2.2
Iron oxide 85.0 10.4 4.6 19.8 33.4 46.7
Ferrosilite 40.2 51.5 8.2 22.9 60.7 16.4
Dolomite 74.9 14.6 10.6 49.8 36.6 13.6
Diopside 44.5 39.1 16.4 18.6 64.5 16.9
Table 8. Mineral composition of pre-concentration products
Mineral Chemical Formula
Proportion (%)
Concentrate Tailings
Quartz SiO2 31.9 58.2
Magnetite Fe
3 O
4 37.9 16.3
Hematite Fe
2 O
3 13.9 2.7
Ferrosilite Fe2Si2O6 8.2 10.2
Dolomite CaMg(CO3)2 2.6 3.3
Diopside CaMgSi
2 O
6 3.3 4.2
Calcite CaCO
3 1.4 3.0
Hornblende Ca2Fe5Si7AlO22(OH)2 0.3 1.3
Talc Mg3Si4O10(OH)2 0.4 0.7
Figure 8. Mineral’s recovery
Table 9. Liberation results
Mineral
Proportion (%)
Concentrate Tailings
Liberated Middlings Locked Liberated Middlings Locked
Quartz 78.0 20.2 1.8 59.4 38.5 2.2
Iron oxide 85.0 10.4 4.6 19.8 33.4 46.7
Ferrosilite 40.2 51.5 8.2 22.9 60.7 16.4
Dolomite 74.9 14.6 10.6 49.8 36.6 13.6
Diopside 44.5 39.1 16.4 18.6 64.5 16.9