CN117861846A - Centrifugal dry type weak magnetic field magnetic separator - Google Patents
Centrifugal dry type weak magnetic field magnetic separator Download PDFInfo
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- CN117861846A CN117861846A CN202410085275.3A CN202410085275A CN117861846A CN 117861846 A CN117861846 A CN 117861846A CN 202410085275 A CN202410085275 A CN 202410085275A CN 117861846 A CN117861846 A CN 117861846A
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- 230000005291 magnetic effect Effects 0.000 title claims abstract description 82
- 239000006148 magnetic separator Substances 0.000 title claims abstract description 48
- 238000000926 separation method Methods 0.000 claims abstract description 49
- 239000012141 concentrate Substances 0.000 claims abstract description 37
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 230000006698 induction Effects 0.000 claims description 27
- 239000000428 dust Substances 0.000 claims description 21
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 8
- 239000011707 mineral Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 28
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 abstract description 27
- 229910052742 iron Inorganic materials 0.000 abstract description 14
- 239000002245 particle Substances 0.000 abstract description 13
- 238000007885 magnetic separation Methods 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 7
- 239000006185 dispersion Substances 0.000 abstract 1
- 238000011084 recovery Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 230000005294 ferromagnetic effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention relates to a centrifugal dry type weak magnetic field magnetic separator, and belongs to the technical field of mine equipment. The centrifugal dry-type weak magnetic field magnetic separator comprises a frame, a feeding device, a concentrate or tailing bucket, a dust-separating cover, a permanent magnet magnetic system, a magnetic system supporting frame, a transmission shaft, a separation cone disc and a speed reducing motor. The magnetic separator can obviously strengthen centrifugal force to loosen and separate magnetic ore particle groups, namely, a separation cone rotates to generate instant continuous tangential friction force action on the ore particle groups in the separation process, so that continuous strong dispersion action is generated on the ore particle groups, the dry magnetic separation effect of fine-grained magnetite ore can be improved, and the lower limit of the granularity of effective separation is obviously reduced. The novel dry magnetic separator has important application prospect in the iron ore mountains in arid and cold areas, and has important significance for improving the efficient development and utilization of iron ore resources in China.
Description
Technical Field
The invention relates to a centrifugal dry type weak magnetic field magnetic separator, and belongs to the technical field of mine equipment.
Background
Iron ore provides a basic raw material for the global iron and steel industry, wherein magnetite is a main mineral seed of iron ore resources, so that effective development and utilization are important. The wet type weak magnetic separation process is generally adopted in the industry to obtain qualified magnetite concentrates, but the wet type magnetic separation process needs a large amount of flowing water to serve as a separation medium, and the method cannot be used in arid and winter severe cold areas, such as northeast, inner mongolia, xinjiang areas and some international countries and regions in China, so that a large amount of ferromagnetic mineral resources such as magnetite and the like in the global water-deficient areas cannot be economically and effectively developed and utilized.
The dry magnetic separation does not consume water, the produced concentrate does not need filtering and dewatering operation and antifreezing measures, and the problems of development and utilization of iron ores in water-deficient and alpine regions can be solved. However, the existing dry magnetic separators used in industry can only process coarse-size magnetite ores, and have little separation effect on fine-size magnetite ores. This is because magnetite particles have a large remanence during magnetic separation, and magnetic agglomerates, fine gangue inclusions, and poor intergrowth ores are easily formed between the ore particles, which may reduce the quality of the iron concentrate. Meanwhile, as the particle size of the ore decreases, electrostatic force and van der Waals force between ores become main acting forces between ores, and fine iron ores are flocculated and agglomerated, which is difficult to separate.
Disclosure of Invention
In order to solve the problem that the traditional dry magnetic separator cannot effectively separate fine-fraction magnetite, the invention discloses novel dry magnetic separation equipment, namely a centrifugal dry low-intensity magnetic field magnetic separator. The magnetic separator can obviously strengthen the loosening and sorting effect of centrifugal force on the magnetic ore particles, namely, the sorting cone rotates to generate an instantaneous continuous tangential friction force effect on the ore particles in the sorting process, so that a continuous strong dispersing effect can be generated on ore particle groups, the dry magnetic separation effect of fine-particle magnetite is improved, and the lower limit of the particle size of effective sorting is obviously reduced. The novel dry magnetic separator has important application prospect in the iron ore mountains in arid and cold areas, and has important significance for improving the efficient development and utilization of iron ore resources in China. The invention is realized by the following technical scheme.
A centrifugal dry type weak magnetic field magnetic separator comprises a frame 1, a concentrate or tailing bucket 2, a feeding device 3, a dust-proof cover 4, a separation cone disc 5, a reducing motor 7, a transmission shaft 8, a permanent magnet system 10 and a magnetic system supporting frame 11,
the top of the frame 1 is provided with a gear motor 7 and a feeding device 3, the gear motor 7 is connected with a transmission shaft 8, the transmission shaft 8 is connected with a sorting cone disc 5 through a flange plate to drive the sorting cone disc 5 to rotate, the surface of the sorting cone disc 5 is provided with a mineral guiding strip, a permanent magnet system 10 with a magnetic wrap angle of 180-315 DEG is arranged right below the sorting cone disc 5, the permanent magnet system 10 is fixed through a magnet system support frame 11, the magnet system support frame 11 is arranged at the bottom of the frame 1, and a feed hopper outlet of the feeding device 3 is positioned at one side of the upper end of the sorting cone disc 5;
the periphery of the sorting cone disc 5 is provided with a dust separation cover 4, a baffle plate is arranged inside the dust separation cover 4, the dust separation cover is divided into a plurality of sorting chambers, and the rotating non-magnetic minerals are timely intercepted to the tailing bucket so as to improve the sorting precision of the magnetic separator, the bottom of each sorting chamber is provided with a concentrate or tailing bucket 2, and the dust separation cover 4 and the concentrate or tailing bucket 2 are hermetically installed to seal the sorting cone disc 5 inside.
The feeding device comprises three main components, namely a star feeder, a feeding hopper and a feeding hopper, wherein a rotating shaft of the star feeder is connected with a plurality of ore separating bins, so that ore feeding uniformity is ensured. The star feeder conveys ore raw materials to a hopper, and the hopper is conveyed to the upper end of the sorting cone 5 through the hopper.
The concentrate or tailing bucket 2 is formed by combining and sealing a plurality of receiving hoppers, the outer walls of the adjacent receiving hoppers are in contact with each other in pairs, and each receiving hopper is of a polyhedron or cylinder structure.
The dust-proof cover 4 is designed in two halves, and forms a space for sealing the separation cone disc 5 with the concentrate or tailing bucket 2 after being combined and installed.
The dust-proof cover 4 is also provided with a dust-proof cover height plugboard 9 for adjusting the installation height of the dust-proof cover and adjusting the height distance from the top of the dust-proof cover 4 to the conical surface of the sorting conical disc 5. When the height distance from the top of the dust separation cover 4 to the conical surface of the separation cone disc 5 is adjusted by the dust separation cover height plugboard 9, the bottom end of the dust separation cover 4 positioned in the concentrate or tailing bucket 2 is lifted upwards, and the sealing installation of the dust separation cover 4 and the concentrate or tailing bucket 2 is still maintained.
The cone angle of the sorting cone disc 5 is 0-45 degrees, the background magnetic induction intensity on the surface of the sorting cone disc 5 is 0.10-0.50T continuously adjustable, and the rotating speed of the sorting cone disc 5 is 0-200 rpm continuously adjustable.
The sorting cone disc 5 is also provided with a sorting area magnetic induction intensity adjusting device 6 for adjusting the magnetic induction intensity of the working face and adjusting the heights of the sorting cone disc 5 and the permanent magnet system 10 to obtain different magnetic induction intensities. The magnetic induction intensity adjusting device 6 of the sorting area can adjust the height distance by increasing or decreasing the gaskets.
The permanent magnet system 10 comprises a magnet yoke and magnetic poles, wherein the magnet yoke main body is a polygonal pyramid, the cone angle of the magnet yoke main body is the same as that of the sorting cone disc 5, magnetic pole magnetic force lines are perpendicular to the surface of the sorting cone disc 5, the magnetic poles are alternately arranged along the circumferential direction, the circumferential magnetic induction intensity is unchanged, and the radial magnetic induction intensity is increased.
The working principle of the centrifugal dry type weak magnetic field magnetic separator is as follows:
first, the sorting cone height adjusting device 6 is adjusted to the surface magnetic induction intensity required for the sorting cone 5. Then, the gear motor 7 is started, and the transmission shaft 8 drives the separation cone disc 5 to rotate in the space in the dust separation cover 4 to establish a composite force field with the cooperation of the magnetic field, the centrifugal force field and the gravity field. Then, the feeder is started, ore powder is conveyed to the ore hopper, and falls from the outlet of the hopper to the surface of the sorting cone 5. Under the action of centrifugal force, non-magnetic ore particles in the ore powder are thrown out by a sorting cone disc and fall into a tailing bucket 2, so that a non-magnetic tailing product is obtained; the magnetic field capturing force of the magnetic ore particles can overcome the action of centrifugal force, and the magnetic ore particles are thrown out and fall into the ore concentrate hopper 2 after being brought to a non-magnetic field region by the rotary sorting cone disc 5, so that a magnetic ore concentrate product is obtained.
The beneficial effects of the invention are as follows:
(1) The centrifugal dry type weak magnetic field magnetic separator provided by the invention realizes the efficient cooperation of a magnetic field, a centrifugal field and a gravity field, has high separation precision on ferromagnetic ores under a drying condition, and can be used for separating fine materials in a highly selective manner.
(2) The centrifugal dry type weak magnetic field magnetic separator has the advantages of high processing capacity, small sortable lower limit granularity, continuously adjustable key technical parameters such as magnetic induction intensity, centrifugal force field intensity and the like, and can be applied to developing strong magnetic mineral resources such as magnetite and the like in arid and water shortage and severe cold areas of China.
Drawings
FIG. 1 is a schematic diagram of a centrifugal dry low-intensity magnetic separator of the present invention in front view;
FIG. 2 is a schematic cross-sectional view of a centrifugal dry low-intensity magnetic separator of the present invention;
FIG. 3 is a diagram of a centrifugal dry type low-intensity magnetic separator with model cDMS-1000 according to the invention.
In the figure: the device comprises a 1-frame, a 2-concentrate or tailing hopper, a 3-ore feeding device, a 4-dust-separating cover, a 5-sorting cone disc, a 6-sorting area magnetic induction intensity adjusting device, a 7-speed reducing motor, an 8-transmission shaft, a 9-dust-separating cover height adjusting plugboard, a 10-permanent magnet magnetic system and a 11-magnetic system supporting frame.
Detailed Description
The invention will be further described with reference to the drawings and detailed description.
Example 1
As shown in fig. 1 to 2, the centrifugal dry type low-intensity magnetic separator comprises a frame 1, a concentrate or tailing hopper 2, a feeding device 3, a dust-separating cover 4, a separation cone disc 5, a speed reducing motor 7, a transmission shaft 8, a permanent magnet system 10 and a magnetic system supporting frame 11.
The top of the frame 1 is provided with a gear motor 7 and a feeding device 3, the gear motor 7 is connected with a transmission shaft 8, the transmission shaft 8 is connected with a sorting cone disc 5 through a flange plate to drive the sorting cone disc 5 to rotate, the surface of the sorting cone disc 5 is provided with a mineral guiding strip, a permanent magnet system 10 with a magnetic wrap angle of 180-315 DEG is arranged right below the sorting cone disc 5, the permanent magnet system 10 is fixed through a magnet system support frame 11, the magnet system support frame 11 is arranged at the bottom of the frame 1, and a feed hopper outlet of the feeding device 3 is positioned at one side of the upper end of the sorting cone disc 5;
the periphery of the sorting cone disc 5 is provided with a dust separation cover 4, a baffle plate is arranged inside the dust separation cover 4, the dust separation cover is divided into a plurality of sorting chambers, and the rotating non-magnetic minerals are timely intercepted to the tailing bucket so as to improve the sorting precision of the magnetic separator, the bottom of each sorting chamber is provided with a concentrate or tailing bucket 2, and the dust separation cover 4 and the concentrate or tailing bucket 2 are hermetically installed to seal the sorting cone disc 5 inside.
The feeding device comprises three main components of a star feeder, a feeding hopper and a feeding hopper, and a plurality of ore separating bins are connected to a rotating shaft of the star feeder, so that ore feeding uniformity is guaranteed. The star feeder delivers ore raw material to a hopper, which delivers the ore raw material to the upper end of the sorting cone 5.
Wherein concentrate or tailing bucket 2 is a plurality of hopper combinations and seals, and every adjacent hopper outer wall pair contact installation, every hopper that connects is the polyhedron structure.
Wherein the dust-separating cover 4 is designed in two halves, and forms a space for sealing the separation cone disc 5 with the concentrate or tailing bucket 2 after being combined and installed.
The dust-proof cover 4 is also provided with a dust-proof cover height plugboard 9 for adjusting the height distance from the top of the dust-proof cover 4 to the conical surface of the sorting cone 5. When the height distance from the top of the dust separation cover 4 to the conical surface of the separation cone disc 5 is adjusted by the dust separation cover height plugboard 9, the bottom end of the dust separation cover 4 positioned in the concentrate or tailing bucket 2 is lifted up, but the sealing installation of the dust separation cover 4 and the concentrate or tailing bucket 2 is still maintained.
Wherein the cone angle of the sorting cone 5 is 0-45 degrees, the background magnetic induction intensity of the surface of the sorting cone 5 is 0.10-0.50T continuously adjustable, and the rotating speed of the sorting cone 5 is 0-200 rpm continuously adjustable.
The sorting cone 5 is also provided with a sorting area magnetic induction intensity adjusting device 6, and the heights of the sorting cone 5 and the permanent magnet system 10 are adjusted to obtain different magnetic induction intensities. The magnetic induction intensity adjusting device 6 of the sorting area can adjust the height distance by increasing or decreasing the gaskets.
The permanent magnet system 10 comprises a magnet yoke and magnetic poles, wherein the magnet yoke main body is a polygonal pyramid, the cone angle of the magnet yoke main body is the same as that of the sorting cone disc 5, magnetic pole magnetic force lines are perpendicular to the surface of the sorting cone disc 5, the magnetic poles are alternately arranged along the circumferential direction, the circumferential magnetic induction intensity is unchanged, and the radial magnetic induction intensity is increased.
The centrifugal dry type low-intensity magnetic separator of the embodiment is named as cDMS-1000 centrifugal dry type low-intensity magnetic separator, and an actual diagram is shown in fig. 3.
And (3) carrying out magnetic separation roughing on a certain magnetite ore by adopting a cDMS-1000 centrifugal dry type weak magnetic field magnetic separator, wherein the granularity of the magnetite ore is 85.24 percent with the granularity of-5.0 mm, the TFe grade is 34.12 percent, the MFe grade is 30.11 percent, the magnetic induction intensity of the background is 0.18T at the rotating speed of a feeder of 12r/min, the magnetic induction intensity of the surface of the separation disc 1 gradually increases from 0.05T to 0.18T along the radial direction, and the rotating speed is 50r/min, and the separation index is shown in table 1.
TABLE 1cDMS-1000 centrifugal dry type weak magnetic field magnetic separator for separating 5.0mm coarse grain magnetite ore
From table 1, it can be seen that once roughing is performed through a cDMS-1000 centrifugal dry type weak magnetic field magnetic separator, the TFe recovery rate of the combined concentrate reaches 86.41%, and the TFe grade is improved from 34.12% of the ore feeding to 44.23%, which exceeds 10 percentage points; the recovery rate of the combined concentrate MFe is up to 94.06%, and the MFe grade is increased from 30.11 to 42.49% of the ore feeding grade to more than 12% of the ore feeding grade. The tailing yield is as high as 33.34%, the TFe grade is only 13.91%, the MFe grade is reduced to 5.36%, and the MFe recovery rate is only 5.94%. As can be seen, the magnetic separator can discard gangue with the yield of about 1/3 for coarse-grain magnetite ore with the granularity of-5.0 mm to obtain high-grade magnetite coarse concentrate, and the iron recovery rate loss is little.
The same certain magnetite ore is roughed by adopting a dry drum type magnetic separator with the model of RTG-0405 in the prior art, the drum speed is 50r/min, the magnetic induction intensity is 0.18T, the MFe recovery rate of the concentrate is 96.28%, the MFe grade is improved from 30.11% of the ore feeding to 36.40% of the concentrate, and the tailing yield is 20.36%. The magnetic separator can raise the MFe grade from 30.11 to 42.49%, and the dry magnetic separation in the prior art can only raise the MFe grade from 30.11% to 36.40% of concentrate, so that the separating effect of the conventional dry drum magnetic separator on magnetite with the size of-5.0 mm is obviously lower than that of the centrifugal dry magnetic separator disclosed by the invention.
Crushing and grinding certain coarse-grain magnetite ore until the granularity of-0.10 mm accounts for 80.21%, and the iron grade is 33.12%. Adopting a cDMS-1000 centrifugal dry type weak magnetic field magnetic separator, and performing primary roughing under the conditions that the background magnetic induction intensity is 0.20T, the magnetic induction intensity of the surface of the separation disc 1 is gradually increased to 0.20T along the radial direction, the rotation speed of the separation cone disc is 60r/min, and the rotation speed of the feeder is 12r/min, wherein the separation indexes are shown in table 2.
TABLE 2cDMS-1000 centrifugal dry low-intensity magnetic separator for separating fine-grained magnetite ore of 0.10mm
From Table 2, it can be seen that TFe recovery rate of the combined concentrate reaches 88.98% after once separation by a cDMS-1000 centrifugal dry type weak magnetic field magnetic separator, and TFe grade is improved from 33.12% of ore feeding to 44.45%, and exceeds 11 percentage points; the recovery rate of the combined concentrate MFe is up to 97.18%, and the MFe grade is improved to 43.03% from 29.27 of the ore feeding, which is close to 14 percentage points. The tailing yield is up to 33.90%, the TFe grade is only 10.77%, the MFe grade is reduced to 1.50%, and the MFe recovery rate is only 2.82%. As can be seen, the magnetic separator can discard gangue with the yield exceeding 1/3 for fine-grained magnetite ore with the granularity of-0.10 mm to obtain high-grade magnetite rough concentrate, and the loss of the recovery rate of iron is little.
Crushing and grinding coarse-grain magnetite until the granularity of the coarse-grain magnetite ore is-0.10 mm and is 80.21%, roughing the iron grade 33.65% by adopting a dry drum type magnetic separator with the model of RTG-0405 in the prior art, wherein the background magnetic induction intensity is 0.20T, the drum rotating speed is 50r/min, and the recovery rate of the concentrate MFe is 98.63%, the MFe grade is only increased to 35.44% from 33.65% of the feeding ore, and the tailing yield is only 6.35%. From the fact that the cDMS-1000 centrifugal dry type weak magnetic field magnetic separator can improve the MFe grade from 29.27 of ore feeding to 43.03%, but the dry type magnetic separation in the prior art can only improve the MFe grade from 33.65 of ore feeding to 35.44% of concentrate, the existing dry type drum type magnetic separator basically loses the selective separation capability on magnetite with the size of-0.10 mm, and the centrifugal dry type magnetic separator disclosed by the invention still has the excellent selective separation capability on magnetite with the size of-0.10 mm.
Compared with the two results, the dry type centrifugal weak magnetic field magnetic separation device can be used for efficiently separating coarse-grain magnetite ores and fine-grain magnetite ores, and has high separation accuracy, so that the device has high applicability.
While the present invention has been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (8)
1. A centrifugal dry-type weak magnetic field magnetic separator is characterized in that: comprises a frame (1), a concentrate or tailing hopper (2), a feeding device (3), a dust-proof cover (4), a sorting cone disc (5), a gear motor (7), a transmission shaft (8), a permanent magnet magnetic system (10) and a magnetic system supporting frame (11),
a speed reducing motor (7) and a feeding device (3) are arranged at the top of the frame (1), the speed reducing motor (7) is connected with a transmission shaft (8), the transmission shaft (8) is connected with a sorting cone disc (5) through a flange disc to drive the sorting cone disc (5) to rotate, a mineral guiding strip is arranged on the surface of the sorting cone disc (5), a permanent magnet system (10) with a magnetic wrap angle of 180-315 DEG is arranged right below the sorting cone disc (5), the permanent magnet system (10) is fixed through a magnet system supporting frame (11), the magnet system supporting frame (11) is arranged at the bottom of the frame (1), and a feed hopper outlet of the feeding device (3) is positioned at one side of the upper end of the sorting cone disc (5);
the periphery of the separation cone disc (5) is provided with a dust separation cover (4), a baffle plate is arranged inside the dust separation cover (4), the dust separation cover is divided into a plurality of separation chambers, the bottom of each separation chamber is provided with a concentrate or tailing bucket (2), the dust separation cover (4) and the concentrate or tailing bucket (2) are in sealing installation, and the separation cone disc (5) is sealed inside.
2. The centrifugal dry low-intensity magnetic separator according to claim 1 wherein: the feeding device comprises three main components of a star feeder, a hopper and a feed hopper.
3. The centrifugal dry low-intensity magnetic separator according to claim 1 wherein: the concentrate or tailing bucket (2) is formed by combining and sealing a plurality of receiving hoppers, the outer walls of the adjacent receiving hoppers are in contact with each other in pairs, and each receiving hopper is of a polyhedron or cylinder structure.
4. The centrifugal dry low-intensity magnetic separator according to claim 1 wherein: the dust-proof cover (4) is designed in two halves, and forms a space for sealing the separation cone disc (5) with the concentrate or tailing bucket (2) after being combined and installed.
5. The centrifugal dry low-intensity magnetic separator according to claim 1 wherein: the dust-proof cover (4) is also provided with a dust-proof cover height plugboard (9) for adjusting the installation height.
6. The centrifugal dry low-intensity magnetic separator according to claim 1 wherein: the cone angle of the sorting cone disc (5) is 0-45 degrees, the background magnetic induction intensity on the surface of the sorting cone disc (5) is 0.10-0.50T continuously adjustable, and the rotating speed of the sorting cone disc (5) is 0-200 r/min continuously adjustable.
7. The centrifugal dry low-intensity magnetic separator according to claim 6 wherein: the sorting cone disc (5) is also provided with a sorting area magnetic induction intensity adjusting device (6) for adjusting the magnetic induction intensity of the working face.
8. The centrifugal dry low-intensity magnetic separator according to claim 6 wherein: the permanent magnet system (10) comprises a magnet yoke and magnetic poles, wherein the magnet yoke main body is a polygonal pyramid, the cone angle of the magnet yoke main body is the same as that of the sorting cone disc (5), magnetic pole magnetic force lines are perpendicular to the surface of the sorting cone disc (5), the magnetic poles are alternately arranged along the circumferential direction, the circumferential magnetic induction intensity is unchanged, and the radial magnetic induction intensity is increased.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410085275.3A CN117861846A (en) | 2024-01-21 | 2024-01-21 | Centrifugal dry type weak magnetic field magnetic separator |
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| CN202410085275.3A CN117861846A (en) | 2024-01-21 | 2024-01-21 | Centrifugal dry type weak magnetic field magnetic separator |
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