CN111151376A - Composite magnetic system for flat-ring high-gradient magnetic separator - Google Patents
Composite magnetic system for flat-ring high-gradient magnetic separator Download PDFInfo
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- CN111151376A CN111151376A CN202010080274.1A CN202010080274A CN111151376A CN 111151376 A CN111151376 A CN 111151376A CN 202010080274 A CN202010080274 A CN 202010080274A CN 111151376 A CN111151376 A CN 111151376A
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- magnetic
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- permanent magnetic
- magnetic poles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/025—High gradient magnetic separators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/025—High gradient magnetic separators
- B03C1/031—Component parts; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/025—High gradient magnetic separators
- B03C1/031—Component parts; Auxiliary operations
- B03C1/033—Component parts; Auxiliary operations characterised by the magnetic circuit
- B03C1/0335—Component parts; Auxiliary operations characterised by the magnetic circuit using coils
Abstract
The invention relates to the technical field of flat ring high-gradient magnetic separation equipment, in particular to a composite magnetic system for a flat ring high-gradient magnetic separator. Comprises a plurality of permanent magnetic poles and electromagnetic magnetic poles which are distributed in the circumferential direction; the number of the permanent magnetic poles and the number of the electromagnetic magnetic poles are even, the permanent magnetic poles and the electromagnetic magnetic poles are in the same circumferential positions and are opposite one to one, the polarities of the permanent magnetic poles and the electromagnetic magnetic poles which are opposite one to one are the same, the polarities of two adjacent permanent magnetic poles are opposite, and the polarities of two adjacent electromagnetic magnetic poles are opposite; the permanent magnetic pole is externally provided with a cylinder body which can rotate around the axis of the permanent magnetic pole, and the magnetism gathering medium is fixed in the circumferential direction of the cylinder body and rotates along with the cylinder body. The invention combines the permanent magnetic system and the electromagnetic magnetic system, not only fully utilizes the advantages of low energy consumption of the permanent magnetic system, large unit processing capacity of the flat-ring high-gradient magnetic separator and the like, but also overcomes the defects of low background magnetic induction intensity, difficult adjustment and the like generated by the permanent magnetic system, and can effectively reduce the problem of high energy consumption of the high-gradient magnetic separation technology.
Description
Technical Field
The invention relates to the technical field of flat ring high-gradient magnetic separation equipment, in particular to a composite magnetic system for a flat ring high-gradient magnetic separator.
Background
The High Gradient Magnetic Separation (HGMS) technology is one of the main methods for sorting micro-fine and weak magnetic materials. With the needs of production development and the progress of science and technology, various high-gradient magnetic separation devices are researched and developed at home and abroad, and mainly comprise a flat-ring type high-gradient magnetic separator and a vertical-ring type high-gradient magnetic separator.
The flat ring type high gradient magnetic separator has the advantages of simple structure and large unit ring body area processing capacity, setae are mostly adopted as magnetism gathering media in the early stage, and the magnetic media are easily blocked due to the fact that the ore feeding direction is consistent with the ore discharging direction, so that the application of the flat ring type high gradient magnetic separator is limited to a certain extent. The vertical ring high gradient magnetic separator has the advantages of vertical rotation of the rotating ring, back flushing of concentrate, and the matching of a pulse mechanism, and has the advantages of large enrichment ratio, high separation efficiency, difficult blockage of magnetic media and the like. As the rotary ring structure is only about 30 percent used for sorting weakly magnetic minerals, the problems of low rotary ring utilization rate, small processing capacity per unit ring body area and the like exist. The excitation modes of the high-gradient magnetic separator are all electromagnetic fields, and the problems of high excitation power and high energy consumption exist.
Along with the gradual improvement of the performance of the magnetic material, CN201644210U discloses a permanent-magnet high-gradient magnetic separator, the background magnetic induction intensity can reach 0.75T, and the energy consumption of the high-gradient magnetic separator is reduced; however, there are problems that the background magnetic induction is not adjustable, the magnetic induction intensity is low, the effective operating depth of the magnetic field is shallow, the processing capability is low, and the like.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the composite magnetic system for the flat-ring high-gradient magnetic separator, which increases the processing capacity of the unit ring body area of the high-gradient magnetic separator, reduces the energy consumption of the high-gradient magnetic separator and can meet the requirement of the background magnetic induction intensity for separating weakly magnetic minerals by the high-gradient magnetic separator.
In order to achieve the purpose, the invention adopts the following technical scheme:
a composite magnetic system for a flat-ring high-gradient magnetic separator comprises a plurality of permanent magnetic poles and electromagnetic magnetic poles which are distributed in the circumferential direction; the number of the permanent magnetic poles and the number of the electromagnetic magnetic poles are even, the permanent magnetic poles and the electromagnetic magnetic poles are in the same circumferential positions and are opposite one to one, the polarities of the permanent magnetic poles and the electromagnetic magnetic poles which are opposite one to one are the same, the polarities of two adjacent permanent magnetic poles are opposite, and the polarities of two adjacent electromagnetic magnetic poles are opposite; the permanent magnetic pole is externally provided with a cylinder body which can rotate around the axis of the permanent magnetic pole, and the magnetism gathering medium is fixed in the circumferential direction of the cylinder body and rotates along with the cylinder body.
The length of the permanent magnetic pole in the circumferential direction is 340-680 mm, the radial width is 108-104 mm, and the axial height is 130-260 mm.
The permanent magnetic pole is made of ferrite or neodymium iron boron permanent magnetic material.
The remanence Br of the ferrite is more than or equal to 380mT, the coercive force Hc is more than or equal to 270kA/m, and the maximum magnetic energy product (BH) max is more than or equal to 27kJ/m3(ii) a The Br of the Nd-Fe-B permanent magnet material is more than or equal to 1.25T, the coercive force Hc is more than or equal to 925kA/m, and the maximum magnetic energy product (BH) max is more than or equal to 318.5kJ/m3。
The permanent magnetic poles are fixedly connected to the bottom plate along the circumferential direction, the bottom plate is fixedly connected to the shaft sleeve through the rib plate, and the shaft sleeve is fixed to a main shaft of the high-gradient magnetic separator; the plurality of permanent magnetic poles, the bottom plate, the rib plate and the shaft sleeve form a permanent magnetic pole group.
The bottom plate is made of an electrical pure iron material.
The electromagnetic magnetic pole is composed of an iron core and a power-on spiral coil, the power-on spiral coil is U-shaped, and the size of the iron core is the same as that of the permanent magnetic pole.
The iron core is made of an electrical pure iron material; the conducting wire of the electrified spiral coil is red copper with a rectangular hole in the inner diameter, and the number of turns of the spiral coil of a single magnetic pole is 104-156 turns.
The magnetic fluxes generated by the permanent magnetic poles and the electromagnetic magnetic poles with the same polarity are mutually extruded, and a magnetizing magnetic field with higher magnetic induction intensity is generated in a magnetic gathering medium of the high-gradient magnetic separator; the magnetic force lines generated by the permanent magnetic pole groups in the direction opposite to the electromagnetic magnetic pole heads are converged to the adjacent permanent magnetic pole groups with opposite polarities along the magnetic conduction bottom plate in the circular cylinder, and the magnetic force lines in the direction opposite to the electromagnetic magnetic pole heads are converged to the other pole head of the U-shaped electrified spiral coil along the iron core, so that closed circulation of the magnetic force lines is formed.
Compared with the prior art, the invention has the beneficial effects that:
the magnetic fluxes generated by the permanent magnetic pole and the electromagnetic pole with the same polarity are mutually extruded, and a magnetizing magnetic field with higher magnetic induction intensity is generated in a magnetism-gathering medium of the high-gradient magnetic separator; the magnetic force lines generated by the permanent magnetic pole groups in the direction opposite to the electromagnetic magnetic pole heads are converged to the adjacent permanent magnetic pole groups with opposite polarities along the magnetic conduction bottom plate in the circular cylinder, and the magnetic force lines in the direction opposite to the electromagnetic magnetic pole heads are converged to the other pole head of the U-shaped electrified spiral coil along the iron core, so that closed circulation of the magnetic force lines is formed.
The invention combines the permanent magnetic system and the electromagnetic magnetic system, and compared with the traditional single electromagnetic magnetic system or the permanent magnetic system, the invention not only fully utilizes the advantages of low energy consumption of the permanent magnetic system, large unit processing capacity of the flat-ring high-gradient magnetic separator and the like, but also overcomes the defects of low background magnetic induction intensity, difficult adjustment and the like generated by the permanent magnetic system, and can effectively reduce the problem of high energy consumption of the high-gradient magnetic separation technology.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic diagram of the permanent magnet system of the present invention;
FIG. 3 is a schematic diagram of an electromagnetic system of the present invention;
fig. 4 is a schematic diagram of the present invention.
In the figure: 1-permanent magnetic pole 2-bottom plate 3-support rib plate 4-shaft sleeve 5-cylinder 6-magnetic medium 7-spiral coil 8-iron core 9-circumferential length 10-radial width 11-axial height
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
as shown in fig. 1-3, a composite magnetic system for a flat-ring high-gradient magnetic separator comprises 2, 4 or 6 permanent magnetic poles 1 and electromagnetic magnetic poles which are uniformly distributed in the circumferential direction. The permanent magnetic poles 1 are circumferentially identical to the electromagnetic magnetic poles and are opposite to the electromagnetic magnetic poles one by one, the permanent magnetic poles 1 opposite to one are identical to the electromagnetic magnetic poles in polarity, the two adjacent permanent magnetic poles 1 are opposite in polarity, and the two adjacent electromagnetic magnetic poles are opposite in polarity.
As shown in FIG. 2, the permanent magnetic pole 1 has a circumferential length of 340-680 mm, a radial width of 108-104 mm, and an axial heightThe thickness is 130 to 260 mm. The permanent magnetic pole 1 is made of ferrite or neodymium iron boron permanent magnetic material. The remanence Br of the ferrite is more than or equal to 380mT, the coercive force Hc is more than or equal to 270kA/m, and the maximum magnetic energy product (BH) max is more than or equal to 27kJ/m3(ii) a The Br of the Nd-Fe-B permanent magnet material is more than or equal to 1.25T, the coercive force Hc is more than or equal to 925kA/m, and the maximum magnetic energy product (BH) max is more than or equal to 318.5kJ/m3。
2. 4 or 6 permanent magnetic poles 1 are fixedly connected to the outer wall of a bottom plate 2 along the circumferential direction, the bottom plate 2 is made of an electrical pure iron material, the bottom plate 2 is fixedly connected to a shaft sleeve 4 through a rib plate 3, and the shaft sleeve 4 is fixed on a main shaft of a high-gradient magnetic separator; 2. 4 or 6 permanent magnetic poles 1, a bottom plate 2, a rib plate 3 and a shaft sleeve 4 form a permanent magnetic pole group.
As shown in fig. 3, the electromagnetic pole is composed of an iron core 8 and an energized spiral coil 7, the energized spiral coil 7 is U-shaped, and the size of the iron core 8 is the same as that of the permanent magnet pole 1. The iron core 8 is made of an electrical pure iron material. The conducting wire of the electrified spiral coil 7 is red copper with a rectangular hole in the inner diameter, and the number of turns of the spiral coil of a single magnetic pole is 104-156 turns. The cooling mode of the spiral coil 7 is oil cooling or air cooling.
As shown in figure 1 of the drawings, in which,
the outside of the permanent magnetic pole group is provided with a circular cylinder 5 which can rotate around the axis of the permanent magnetic pole group, and a magnetism gathering medium 6 of the high-gradient magnetic separator is fixed in the circumferential direction of the cylinder 5 through stainless steel bolts and can rotate along with the cylinder 5. And 2 groups of permanent magnet pole groups are arranged along the axis direction.
As shown in FIG. 4, an extrusion magnetic field is generated between the permanent magnet pole group and the electromagnetic magnetic pole head, and the background magnetic induction can reach 1.0-1.5T. Taking the extrusion pole as N pole for example, the generated magnetic lines of force are gathered in the magnetism gathering medium 6 of the high gradient magnetic separator to generate higher magnetic induction intensity, thereby playing the role of sorting weakly magnetic minerals. The magnetic force lines of the S pole of the permanent magnetic pole group back to the direction of the electromagnetic magnetic pole head are converged to the adjacent magnetic pole group with opposite polarities along the magnetic conduction bottom plate in the cylinder, and the magnetic force lines of the electromagnetic magnetic pole head with opposite directions are converged to the other pole head of the U-shaped electrified spiral coil along the iron core, so that closed loop circulation of the magnetic force lines is formed.
Example (b):
magnetism generated on the surface of the cylinder by permanent magnet polesFor example, the induction intensity is 0.75T, Y30BH ferrite and N42 NdFeB permanent magnet materials are selected, the magnetic conductive material is DT4 electrical pure iron, and the size of the magnetic block is 65mm multiplied by 85mm multiplied by 18 mm. The radial width of the permanent magnetic pole is 90mm, and the permanent magnetic pole is composed of a layer of ferrite and four layers of neodymium iron boron; three groups of magnetic blocks are axially arranged on the permanent magnetic pole, and the axial height is 195 mm; six groups of magnetic blocks are arranged in the circumferential direction of the permanent magnetic pole, and the length in the circumferential direction is 510 mm. Taking the background magnetic induction intensity generated by the electromagnetic system as 1.0T as an example, the spiral conductor is a red copper conductor with a rectangular hole inside diameter, the cross-sectional dimension is 26mm multiplied by 22mm multiplied by 5mm, and the minimum current density is 4A/mm2The number of turns is 104, 8 turns in radial direction and 13 turns in axial direction. The composite magnetic system formed by the scheme can generate the background magnetic induction intensity of 0.75-1.5T in the separation area of the flat-ring high-gradient magnetic separator, and completely meets the requirement of separating weak magnetic minerals.
The magnetic fluxes generated by the permanent magnetic pole 1 and the electromagnetic magnetic pole with the same polarity are mutually extruded, and a magnetizing magnetic field with higher magnetic induction intensity is generated in a magnetic concentration medium 6 of the high-gradient magnetic separator; the magnetic force lines generated by the permanent magnetic pole groups in the direction opposite to the electromagnetic magnetic pole heads are converged to the adjacent permanent magnetic pole groups with opposite polarities along the magnetic conduction bottom plate in the circular cylinder, and the magnetic force lines in the direction opposite to the electromagnetic magnetic pole heads are converged to the other pole head of the U-shaped electrified spiral coil along the iron core, so that closed circulation of the magnetic force lines is formed.
The invention combines the permanent magnetic system and the electromagnetic magnetic system, and compared with the traditional single electromagnetic magnetic system or the permanent magnetic system, the invention not only fully utilizes the advantages of low energy consumption of the permanent magnetic system, large unit processing capacity of the flat-ring high-gradient magnetic separator and the like, but also overcomes the defects of low background magnetic induction intensity, difficult adjustment and the like generated by the permanent magnetic system, and can effectively reduce the problem of high energy consumption of the high-gradient magnetic separation technology.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. The utility model provides a compound magnetic system for flat ring high gradient magnet separator which characterized in that: comprises a plurality of permanent magnetic poles and electromagnetic magnetic poles which are distributed in the circumferential direction; the number of the permanent magnetic poles and the number of the electromagnetic magnetic poles are even, the permanent magnetic poles and the electromagnetic magnetic poles are in the same circumferential positions and are opposite one to one, the polarities of the permanent magnetic poles and the electromagnetic magnetic poles which are opposite one to one are the same, the polarities of two adjacent permanent magnetic poles are opposite, and the polarities of two adjacent electromagnetic magnetic poles are opposite; the permanent magnetic pole is externally provided with a cylinder body which can rotate around the axis of the permanent magnetic pole, and the magnetism gathering medium is fixed in the circumferential direction of the cylinder body and rotates along with the cylinder body.
2. The composite magnetic system for the flat-ring high-gradient magnetic separator as claimed in claim 1, wherein the permanent magnetic poles have a circumferential length of 340-680 mm, a radial width of 108-104 mm, and an axial height of 130-260 mm.
3. The composite magnetic system for the flat-ring high-gradient magnetic separator as claimed in claim 1, wherein the permanent magnetic poles are made of ferrite or neodymium-iron-boron permanent magnetic material.
4. The composite magnetic system for the flat-ring high-gradient magnetic separator as claimed in claim 3, wherein the remanence Br of the ferrite is more than or equal to 380mT, the coercive force Hc is more than or equal to 270kA/m, and the maximum energy product (BH) max is more than or equal to 27kJ/m3(ii) a The Br of the Nd-Fe-B permanent magnet material is more than or equal to 1.25T, the coercive force Hc is more than or equal to 925kA/m, and the maximum magnetic energy product (BH) max is more than or equal to 318.5kJ/m3。
5. The composite magnetic system for the flat-ring high-gradient magnetic separator according to claim 1, wherein the plurality of permanent magnetic poles are fixedly connected to a bottom plate along a circumferential direction, the bottom plate is fixedly connected to a shaft sleeve through a rib plate, and the shaft sleeve is fixed to a main shaft of the high-gradient magnetic separator; the plurality of permanent magnetic poles, the bottom plate, the rib plate and the shaft sleeve form a permanent magnetic pole group.
6. The composite magnetic system for the flat-ring high-gradient magnetic separator as claimed in claim 5, wherein the bottom plate is made of an electrical pure iron material.
7. The composite magnetic system for the flat-ring high-gradient magnetic separator as claimed in claim 1, wherein the electromagnetic magnetic pole is composed of an iron core and an energized spiral coil, the energized spiral coil is U-shaped, and the size of the iron core is the same as that of the permanent magnetic pole.
8. The composite magnetic system for the flat-ring high-gradient magnetic separator as claimed in claim 7, wherein the iron core is made of an electrical pure iron material; the conducting wire of the electrified spiral coil is red copper with a rectangular hole in the inner diameter, and the number of turns of the spiral coil of a single magnetic pole is 104-156 turns.
9. The composite magnetic system for the flat-ring high-gradient magnetic separator as claimed in claim 1, wherein the magnetic fluxes generated by the permanent magnetic poles and the electromagnetic magnetic poles with the same polarity are mutually extruded to generate a magnetizing magnetic field with higher magnetic induction intensity in a magnetism-gathering medium of the high-gradient magnetic separator; the magnetic force lines generated by the permanent magnetic pole groups in the direction opposite to the electromagnetic magnetic pole heads are converged to the adjacent permanent magnetic pole groups with opposite polarities along the magnetic conduction bottom plate in the circular cylinder, and the magnetic force lines in the direction opposite to the electromagnetic magnetic pole heads are converged to the other pole head of the U-shaped electrified spiral coil along the iron core, so that closed circulation of the magnetic force lines is formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010080274.1A CN111151376A (en) | 2020-02-05 | 2020-02-05 | Composite magnetic system for flat-ring high-gradient magnetic separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010080274.1A CN111151376A (en) | 2020-02-05 | 2020-02-05 | Composite magnetic system for flat-ring high-gradient magnetic separator |
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| Publication Number | Publication Date |
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| CN111151376A true CN111151376A (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010080274.1A Pending CN111151376A (en) | 2020-02-05 | 2020-02-05 | Composite magnetic system for flat-ring high-gradient magnetic separator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477396A (en) * | 2021-07-27 | 2021-10-08 | 广州粤有研矿物资源科技有限公司 | Vertical ring high gradient magnetic separator |
| US11565273B1 (en) * | 2021-11-17 | 2023-01-31 | Cláudio Henrique Teixeira Ribeiro | Magnetic pole with removable head for use in magnetic separator |
-
2020
- 2020-02-05 CN CN202010080274.1A patent/CN111151376A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113477396A (en) * | 2021-07-27 | 2021-10-08 | 广州粤有研矿物资源科技有限公司 | Vertical ring high gradient magnetic separator |
| CN113477396B (en) * | 2021-07-27 | 2023-09-26 | 广州粤有研矿物资源科技有限公司 | Vertical ring high gradient magnetic separator |
| US11565273B1 (en) * | 2021-11-17 | 2023-01-31 | Cláudio Henrique Teixeira Ribeiro | Magnetic pole with removable head for use in magnetic separator |
| WO2023089482A1 (en) * | 2021-11-17 | 2023-05-25 | Ribeiro Claudio Henrique Teixeira | Magnetic pole with removable head for use in magnetic separator |
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