1968 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
This study developed a high efficiency, low temperature
resistant apatite collector, JY, with strong collection capac-
ity. The comparative test was conducted with oleic acid and
JY, wherein oleic acid is recognized as a better anionic col-
lector than oxidized paraffin soap. The test was performed
on iron processing tailings (P2O5 content: 2.49%) with the
dosage of sodium carbonate at 3000g/t and the dosage of
sodium silicate was 500g/t. The test results are presented in
Figure 4. The test results indicate that, at the same dosage,
the P2O5 grade and P2O5 recovery of the rougher concen-
trate obtained using the new collector JY are higher than
those obtained using oleic acid. Therefore, the selectivity
and collective power of the new collector JY are superior to
those of the traditional collector oleic acid.
During the process mineralogy inspection of the iron
tailings, it was observed that some micron sized magne-
tite particles are dispersed and embedded in the silicate
gangue (Figure 5). Given that these gangue minerals exhibit
medium magnetism, further technical research on pre con-
centration by medium magnetic separation is necessary.
The relationship between the discarding rate and
the P2O5 loss rate of the magnetic tailings under various
magnetic field strengths was investigated, as depicted in
Figure 6.
The test results indicate that, under a magnetic field
strength of 0.4T, 57.89% of the magnetic tailings can be
discarded. The P2O5 content in the magnetic tailings is
0.60%, resulting in a P2O5 loss rate of 14%.The process
mineralogy of the products produced by wet pre concentra-
tion tests revealed that the gangue minerals in the magnetic
tailings were coated with micron sized magnetite(Figure 7a).
Table 5. The results of iron recovery test
Product Yield, %
Grade, %Recovery, %
TFe P2O5 TFe P2O5
Iron Concentrate 9.55 65.13 0.1 44.94 0.46
Waste Rock 10.58 8.86 1.5 6.77 7.61
Tailings 79.87 8.37 2.40 48.29 91.94
Raw ore 100.00 13.84 2.09 100.00 100.00
Table 6. Results of technological process comparison test
Technological
Process Product Yield, %Grade of P
2 O
5 ,%Recovery of P
2 O
5 ,%
Flotation Rougher concentrate 9.44 18.81 75.10
Tailings 90.56 0.65 24.90
Feed (Fe tailings) 100.00 2.36 100.00
Magnetic
separation
-flotation
Rougher concentrate 9.32 19.54 76.68
Tailings 32.79 0.63 8.70
Magnetic tailings 57.89 0.60 14.62
Feed (Fe tailings) 100.00 2.38 100.00
Feed ore (-3mm)
Dry pre concentration
Grinding
Wet magnetic separation
Fe concentrate
Re-grinding
Wet magnetic separation
Wet magnetic separation
Tailings
Waste rock 40% of particles
passing through 74 m
70% of particles
passing through 74 m
238.8KA/m
159.2KA/m
127.3KA/m
318.4KA/m
Figure 3. Flowchart of iron recovery test
This study developed a high efficiency, low temperature
resistant apatite collector, JY, with strong collection capac-
ity. The comparative test was conducted with oleic acid and
JY, wherein oleic acid is recognized as a better anionic col-
lector than oxidized paraffin soap. The test was performed
on iron processing tailings (P2O5 content: 2.49%) with the
dosage of sodium carbonate at 3000g/t and the dosage of
sodium silicate was 500g/t. The test results are presented in
Figure 4. The test results indicate that, at the same dosage,
the P2O5 grade and P2O5 recovery of the rougher concen-
trate obtained using the new collector JY are higher than
those obtained using oleic acid. Therefore, the selectivity
and collective power of the new collector JY are superior to
those of the traditional collector oleic acid.
During the process mineralogy inspection of the iron
tailings, it was observed that some micron sized magne-
tite particles are dispersed and embedded in the silicate
gangue (Figure 5). Given that these gangue minerals exhibit
medium magnetism, further technical research on pre con-
centration by medium magnetic separation is necessary.
The relationship between the discarding rate and
the P2O5 loss rate of the magnetic tailings under various
magnetic field strengths was investigated, as depicted in
Figure 6.
The test results indicate that, under a magnetic field
strength of 0.4T, 57.89% of the magnetic tailings can be
discarded. The P2O5 content in the magnetic tailings is
0.60%, resulting in a P2O5 loss rate of 14%.The process
mineralogy of the products produced by wet pre concentra-
tion tests revealed that the gangue minerals in the magnetic
tailings were coated with micron sized magnetite(Figure 7a).
Table 5. The results of iron recovery test
Product Yield, %
Grade, %Recovery, %
TFe P2O5 TFe P2O5
Iron Concentrate 9.55 65.13 0.1 44.94 0.46
Waste Rock 10.58 8.86 1.5 6.77 7.61
Tailings 79.87 8.37 2.40 48.29 91.94
Raw ore 100.00 13.84 2.09 100.00 100.00
Table 6. Results of technological process comparison test
Technological
Process Product Yield, %Grade of P
2 O
5 ,%Recovery of P
2 O
5 ,%
Flotation Rougher concentrate 9.44 18.81 75.10
Tailings 90.56 0.65 24.90
Feed (Fe tailings) 100.00 2.36 100.00
Magnetic
separation
-flotation
Rougher concentrate 9.32 19.54 76.68
Tailings 32.79 0.63 8.70
Magnetic tailings 57.89 0.60 14.62
Feed (Fe tailings) 100.00 2.38 100.00
Feed ore (-3mm)
Dry pre concentration
Grinding
Wet magnetic separation
Fe concentrate
Re-grinding
Wet magnetic separation
Wet magnetic separation
Tailings
Waste rock 40% of particles
passing through 74 m
70% of particles
passing through 74 m
238.8KA/m
159.2KA/m
127.3KA/m
318.4KA/m
Figure 3. Flowchart of iron recovery test