562 XXXI International Mineral Processing Congress 2024 Proceedings/Washington, DC/Sep 29–Oct 3
CONCLUSIONS
This full-scale cDMS-1000 separator has a high separation
selectivity for fine magnetite powders. For the feed parti-
cle size below 0.10 mm, the cDMS separator significantly
improved the magnetite iron grade from 28.57% in feed to
43.07% in concentrate, at a magnetite recovery reaching as
high as 98.38% and, the magnetite iron grade in tailings
was significantly reduced to 1.33%. In addition, the feed
particle size and separation cone speed have their significant
impacts on the cDMS performance. The increase in the
separation cone speed increases the concentrate grade but
reduces magnetite recovery and, the grade and recovery of
magnetite in concentrate firstly increase and then decrease
with increase in feed particle size.
The cDMS separator can effectively separate fine mag-
netite, providing a promising approach for the utilization
of iron resources in arid and water-deficient areas, and in
dry processing operations.
ACKNOWLEDGMENTS
We sincerely acknowledge the fundings to this research
work from the National Natural Science Foundations
of China (Grant Nos. 52264029, 52104255) and the
Yunnan Fundamental Research Projects (Grant No.
202201AU070139)
Figure 5. Mineral maps of particles section for cDMS feed (a), concentrate (b) and tailings (c) (Mt =
magnetite Py =Pyrite Ga =Gangue)
Table 4. Iron phase analysis for cDMS concentrate
Iron Phase
Fe in
Magnetite
Fe in
Siderite
Fe in
Hematite
Fe in
Silicate
Fe in
Sulfide Total Fe
Content (wt%) 43.07 0.022 0.861 1.44 0.086 45.48
Distribution (%)94.70 0.05 1.89 3.17 0.19 100.00
Phase iron recovery (%)98.38 57.43 41.32 27.64 23.38 88.35
CONCLUSIONS
This full-scale cDMS-1000 separator has a high separation
selectivity for fine magnetite powders. For the feed parti-
cle size below 0.10 mm, the cDMS separator significantly
improved the magnetite iron grade from 28.57% in feed to
43.07% in concentrate, at a magnetite recovery reaching as
high as 98.38% and, the magnetite iron grade in tailings
was significantly reduced to 1.33%. In addition, the feed
particle size and separation cone speed have their significant
impacts on the cDMS performance. The increase in the
separation cone speed increases the concentrate grade but
reduces magnetite recovery and, the grade and recovery of
magnetite in concentrate firstly increase and then decrease
with increase in feed particle size.
The cDMS separator can effectively separate fine mag-
netite, providing a promising approach for the utilization
of iron resources in arid and water-deficient areas, and in
dry processing operations.
ACKNOWLEDGMENTS
We sincerely acknowledge the fundings to this research
work from the National Natural Science Foundations
of China (Grant Nos. 52264029, 52104255) and the
Yunnan Fundamental Research Projects (Grant No.
202201AU070139)
Figure 5. Mineral maps of particles section for cDMS feed (a), concentrate (b) and tailings (c) (Mt =
magnetite Py =Pyrite Ga =Gangue)
Table 4. Iron phase analysis for cDMS concentrate
Iron Phase
Fe in
Magnetite
Fe in
Siderite
Fe in
Hematite
Fe in
Silicate
Fe in
Sulfide Total Fe
Content (wt%) 43.07 0.022 0.861 1.44 0.086 45.48
Distribution (%)94.70 0.05 1.89 3.17 0.19 100.00
Phase iron recovery (%)98.38 57.43 41.32 27.64 23.38 88.35