1966 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
Considering the low mFe content of the raw ore and
the coarse particle size of magnetite embedded within it,
the pre concentration, stage grinding and stage magnetic
separation process is employed to recover magnetic iron.
This approach reduces the feed amount for grinding and
the subsequent wet magnetic separation process, thereby
improving the economic viability of iron recovery. Given
the coarse particle size of the apatite minerals, it is more effi-
cient to recover phosphorus directly from the iron process-
ing tailings without additional grinding, thereby reducing
unnecessary energy consumption. Compared to iron and
phosphorus minerals, copper minerals have a finer embed-
ded particle size, and their grade and value are relatively
low. Therefore, copper recovery should give priority to the
Table 4. Particle size characteristics of important minerals in ores
Mineral
Coarse grain Medium grain Fine grain Ultrafine grain
0.3 mm –0.3+0.074 mm v0.074+0.01 mm 0.01 mm
Iron minerals 35.7 45.38 15.09 3.83
Apatite 33.42 50.83 13.73 2.02
Figure 1. Distribution characteristics of major minerals
Considering the low mFe content of the raw ore and
the coarse particle size of magnetite embedded within it,
the pre concentration, stage grinding and stage magnetic
separation process is employed to recover magnetic iron.
This approach reduces the feed amount for grinding and
the subsequent wet magnetic separation process, thereby
improving the economic viability of iron recovery. Given
the coarse particle size of the apatite minerals, it is more effi-
cient to recover phosphorus directly from the iron process-
ing tailings without additional grinding, thereby reducing
unnecessary energy consumption. Compared to iron and
phosphorus minerals, copper minerals have a finer embed-
ded particle size, and their grade and value are relatively
low. Therefore, copper recovery should give priority to the
Table 4. Particle size characteristics of important minerals in ores
Mineral
Coarse grain Medium grain Fine grain Ultrafine grain
0.3 mm –0.3+0.074 mm v0.074+0.01 mm 0.01 mm
Iron minerals 35.7 45.38 15.09 3.83
Apatite 33.42 50.83 13.73 2.02
Figure 1. Distribution characteristics of major minerals