CN114602649B - Magnetic separation and method based on wind-gravity-magnetic composite force field - Google Patents
Magnetic separation and method based on wind-gravity-magnetic composite force field Download PDFInfo
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- CN114602649B CN114602649B CN202210254450.8A CN202210254450A CN114602649B CN 114602649 B CN114602649 B CN 114602649B CN 202210254450 A CN202210254450 A CN 202210254450A CN 114602649 B CN114602649 B CN 114602649B
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- 238000007885 magnetic separation Methods 0.000 title claims abstract description 33
- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 80
- 230000009471 action Effects 0.000 claims abstract description 10
- 238000007664 blowing Methods 0.000 claims abstract description 6
- 239000006249 magnetic particle Substances 0.000 claims description 42
- 238000007599 discharging Methods 0.000 claims description 32
- 239000002245 particle Substances 0.000 claims description 29
- 239000000428 dust Substances 0.000 claims description 27
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 11
- 239000011707 mineral Substances 0.000 claims description 11
- 230000005484 gravity Effects 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000005389 magnetism Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 abstract description 11
- 239000006148 magnetic separator Substances 0.000 abstract description 6
- 238000011084 recovery Methods 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 230000002950 deficient Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
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- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
- B03C1/26—Magnetic separation acting directly on the substance being separated with free falling material
-
- 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
- B03C1/30—Combinations with other devices, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
- B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
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- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses a magnetic separation and a method based on a wind-gravity magnetic composite force field, wherein the magnetic separation based on the wind-gravity magnetic composite force field comprises a shell, an electromagnetic component and an air flow component, the shell is provided with a cavity, a feed inlet and a discharge outlet, the feed inlet is arranged at the top of the shell, the discharge outlet is arranged at the bottom of the shell, the feed inlet and the discharge outlet are communicated with the cavity, the electromagnetic component and the air flow component are arranged on the shell, the electromagnetic component can generate a magnetic field to generate attractive force adjacent to the electromagnetic component on materials, and the air flow component can generate air flow to generate blowing force opposite to the attractive force on the materials so that the materials are layered under the action of the magnetic field and the air flow. The magnetic separation based on the wind-gravity-magnetic composite force field solves the problem that the conjoined bodies in the wind-force magnetic separator are easy to lose, improves the separation efficiency, simultaneously improves the metal recovery rate, has a simple structure, does not need water resources, is particularly suitable for dry separation of fine-grained materials in water-deficient areas, and has larger popularization and application.
Description
Technical Field
The invention relates to the technical field of mineral processing equipment, in particular to a magnetic separation method based on a wind-gravity-magnetic composite force field.
Background
The dry magnetic separation can throw gangue minerals off under the dry condition, so that the pre-enrichment of the magnetic minerals is realized, and the subsequent grinding amount and wet tailings amount are reduced.
In the related art, the material dispersibility and fluidity in the dry magnetic separation process are poor, so that the separation efficiency is low.
Disclosure of Invention
The present invention has been made based on the findings and knowledge of the inventors regarding the following facts and problems:
in the related art, dry magnetic separation is commonly used as a preselecting procedure of magnetic minerals (mainly iron ores), but most of current wind-force dry magnetic separators are in a drum-type structure (a small amount of wind-force dry magnetic separators are flat plates), so that material accumulation and magnetic agglomeration effects are easy to generate, and in addition, air flow arrangement is unreasonable, and separation efficiency is limited. In addition, the iron ore in China generally has the characteristics of fine embedded granularity and more continuous organisms, and the wind-driven magnetic separator using airflow is easy to cause the problems of continuous organism loss, low recovery rate and the like in the separation process, namely the separation efficiency and the recovery rate are difficult to balance.
The present invention aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the invention provides the magnetic separation based on the wind-gravity-magnetic composite force field, which has the advantages of simple structure and high separation efficiency.
The embodiment of the invention provides a magnetic mineral separation method with simple scheme and low cost.
The magnetic separation based on the wind-gravity-magnetic composite force field comprises the following steps: the shell is provided with a cavity, a feed inlet and a discharge outlet, the feed inlet is arranged at the top of the shell, the discharge outlet is arranged at the bottom of the shell, and the feed inlet and the discharge outlet are communicated with the cavity; the electromagnetic assembly and the airflow assembly are both arranged on the shell, the electromagnetic assembly can generate a magnetic field to generate attractive force adjacent to the electromagnetic assembly on materials, and the airflow assembly can generate airflow to generate blowing force opposite to the attractive force on the materials so that the materials are layered under the action of the magnetic field and the airflow.
According to the embodiment of the invention, the magnetic separation based on the wind-gravity-magnetic composite force field is provided with the electromagnetic component and the airflow component, and the attractive force and the wind force are perpendicular to the gravity, so that the materials are always kept in a loose state, the phenomenon of stacking and blocking of the materials is avoided, the attractive force of particles in the materials is different, the magnetic particles, the intergrowth particles and the nonmagnetic particles in the materials are layered in the shell, and the separation efficiency is improved and the metal recovery rate is improved.
In some embodiments, the electromagnetic assembly and the air flow assembly are both positioned on the same side of the feeding hole and the discharging hole, and the air flow assembly can blow air in the shell so that the materials are subjected to wind force away from the electromagnetic assembly, or the electromagnetic assembly and the air flow assembly are oppositely arranged at intervals in the shell, the feeding hole and the discharging hole are both positioned between the electromagnetic assembly and the air flow assembly, and the air flow assembly is used for exhausting air in the shell so that the materials are subjected to wind force away from the electromagnetic assembly.
In some embodiments, the magnetic separation based on the wind-gravity-magnetic composite force field further comprises a first plate, the first plate is a porous medium plate, the first plate is arranged in the cavity to divide the cavity into a first cavity and a second cavity, the first cavity and the second cavity are sequentially arranged along the airflow direction, the feeding port is positioned at the top of the first cavity, the discharging port is positioned at the bottom of the first cavity, the feeding port and the discharging port are communicated with the first cavity, and the electromagnetic assembly and the airflow assembly are arranged in the second cavity.
In some embodiments, the magnetic separation based on the wind-gravity-magnetic composite force field further comprises a second plate arranged in the discharge port and movable relative to the air flow direction at the discharge port so as to adjust the size of the flow area of the discharge port.
In some embodiments, the second board includes a first sub-board and a second sub-board connected in sequence, the first sub-board extending from top to bottom and being inclined toward a direction away from the second sub-board, and the second sub-board extending from top to bottom and being inclined toward a direction away from the first sub-board.
In some embodiments, the feeding port is disposed adjacent to the electromagnetic assembly, the second plates are plural, the plural second plates are disposed at intervals along the air flow direction so as to divide the feeding port into a first feeding port, a second feeding port and a third feeding port, the first feeding port, the second feeding port and the third feeding port are disposed in sequence along a direction away from the electromagnetic assembly, and the first feeding port and the feeding port are disposed opposite to each other along the vertical direction at intervals.
In some embodiments, the magnetic separation based on the wind-gravity-magnetic composite force field further comprises a first dust removing opening and a second dust removing opening, wherein the first dust removing opening is formed in the top of the shell, the second dust removing opening is formed in the outer peripheral surface of the shell, the second dust removing opening is arranged opposite to the airflow assembly at intervals, and the first dust removing opening and the second dust removing opening are communicated with the cavity.
In some embodiments, the cross-sectional areas of the inlet and outlet decrease gradually from top to bottom.
In some embodiments, the electromagnetic assembly includes a plurality of electromagnetic units, the plurality of electromagnetic units are arranged at intervals along the up-down direction, and the magnetism of one end of each adjacent two electromagnetic units facing the airflow assembly is different.
The magnetic separation method of the magnetic minerals comprises the following steps: s1: putting a material into a magnetic field, wherein the material freely falls in a gravitational field and is subjected to attractive force of the magnetic field; s2: blowing or sucking the material by using an air flow, wherein the material is subjected to wind force in the direction of the attractive force in the air flow, so that the material is layered in the air flow, the magnetic field and the gravitational field.
In some embodiments, the magnetic particles in the material are subjected to a force of wind equal to the force of attraction to the magnetic particles, the intergrowth particles in the material are subjected to a force of wind greater than the force of attraction to the intergrowth particles, and the non-magnetic particles in the material are subjected to only the force of wind of the gas flow, thereby distinguishing the magnetic particles, the intergrowth particles, and the non-magnetic particles.
Drawings
FIG. 1 is a schematic diagram of the magnetic separation of a wind-gravity-magnetic composite force field according to an embodiment of the invention.
Fig. 2 is a schematic diagram of the material stress of the wind-gravity-magnetic composite force field according to an embodiment of the invention.
Reference numerals:
magnetic separation of wind-gravity magnetic composite force field 100;
a housing 1; a chamber 11; a discharge port 12; a first discharge port 121; a second outlet 122; a third discharge port 123; a feed inlet 13; a first chamber 14; a second chamber 15; a first dust removal port 16; a second dust removal port 17;
an electromagnetic assembly 2; an electromagnetic unit 21;
an air flow assembly 3;
a first plate 4; a second plate 5; a first sub-board 51; and a second sub-board 52.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The magnetic separation based on the wind gravity magnetic composite force field in the embodiment of the invention is described below with reference to the accompanying drawings.
As shown in fig. 1-2, the magnetic separation based on the wind gravity magnetic composite force field in the embodiment of the invention comprises a shell 1, an electromagnetic assembly 2 and an airflow assembly 3.
The shell 1 is provided with a cavity 11, a feed inlet 13 and a discharge outlet 12, wherein the feed inlet 13 is arranged at the top of the shell 1, the discharge outlet 12 is arranged at the bottom of the shell 1, and the feed inlet 13 and the discharge outlet 12 are communicated with the cavity 11. Specifically, as shown in fig. 1, a feed inlet 13 is formed in the top of the casing 1 and is communicated with the cavity 11, a discharge outlet 12 is formed in the bottom of the casing 1 and is communicated with the cavity 11, the upper portion and the lower portion of the cavity 11 are sealed, and materials (including magnetic particles, continuous biological particles and non-magnetic particles) can enter the cavity 11 from the top of the casing 1, fall under the action of gravity and flow out from the discharge outlet 12.
The electromagnetic assembly 2 and the air flow assembly 3 are both arranged on the shell 1, the electromagnetic assembly 2 can generate a magnetic field to generate attractive force adjacent to the electromagnetic assembly 2 on materials, and the air flow assembly 3 can generate air flow to generate blowing force opposite to the attractive force on the materials, so that the materials are layered under the action of the magnetic field and the air flow.
Specifically, as shown in fig. 1-2, the electromagnetic assembly 2 and the air flow assembly 3 are both arranged on the periphery of the shell 1, the electromagnetic assembly 2 can generate a magnetic field, so that the attractive force of the magnetic field received by the material in the magnetic field is sequentially magnetic particles, particle-linked biological particles and non-magnetic particles from large to small, wherein the attractive force received by the non-magnetic particles is zero, the air flow assembly 3 can generate air flow, so that the magnetic particles, the linked biological particles and the non-magnetic particles in the material receive forces opposite to the attractive force under the action of the air flow, and the magnetic particles, the linked biological particles and the non-magnetic particles in the material are equal to each other under the action of the air flow, and therefore the wind force received by the magnetic particles in the material is equal to the attractive force received by the magnetic particles, the wind force received by the linked biological particles in the material is greater than the attractive force received by the linked biological particles, and the non-magnetic particles in the material are only subjected to the wind force of the air flow, so as to distinguish the magnetic particles, the linked biological particles and the non-magnetic particles.
According to the magnetic separation 100 based on the wind-gravity-magnetic composite force field, the electromagnetic assembly 2 and the airflow assembly 3 are arranged, so that materials naturally fall along with gravity from top to bottom, the materials always keep a loose state, the phenomenon of material accumulation blocking in a cylindrical magnetic separator and a plate magnetic separator in the related art is avoided, the attraction force and the wind direction are opposite, the directions are perpendicular to each other, and the separation effect of each force field is exerted to the greatest extent. In addition, through the coupling of gravity, appeal and wind-force, the classifying effect has to the material of different density, make the material have different drop point positions, simultaneously because appeal and wind-force compete each other, magnetic material granule receives the attraction, its drop point position is nearer to electromagnetic assembly 2, the drop point position of non-magnetic material granule is farther from electromagnetic assembly 2, the intergrowth then falls in intermediate position, thereby can set up concentrate area respectively according to actual ore dressing demand, well mineral area and tailing area, can send the concentrate product into next carefully chosen process, the middling product is through further grinding recleaning processing in order to guarantee the metal recovery, the tailing product is direct to be abandoned or recycle.
In some embodiments, the electromagnetic assembly 2 and the airflow assembly 3 are positioned on the same side of the feed inlet 13 and the discharge outlet 12, and the airflow assembly 3 can blow air in the shell 1 so that the materials are subjected to wind force away from the electromagnetic assembly 2. Specifically, as shown in fig. 1, the electromagnetic component 2 and the air flow component 3 are both arranged on the left side of the shell 1, the electromagnetic component 2 is positioned on the right side of the air flow component 3, the air flow component 3 can be a blower, and air in the air flow component 3 passes through the electromagnetic component 2 to blow the shell 1 through a gap inside the electromagnetic component 2, so that materials are subjected to attractive force and wind force at the same time, and the working efficiency of the electromagnetic component 2 and the air flow component 3 is ensured.
In some embodiments, the electromagnetic assembly 2 and the airflow assembly 3 are arranged in the shell 1 in an opposite mode at intervals, the feed inlet 13 and the discharge outlet 12 are both positioned between the electromagnetic assembly 2 and the airflow assembly 3, and the airflow assembly 3 pumps air in the shell 1 so that materials are subjected to wind force away from the electromagnetic assembly 2. Specifically, the electromagnetic assembly 2 and the airflow assembly 3 are arranged at intervals along the inner and outer directions, the feeding inlet 13 and the discharging outlet 12 are both positioned between the electromagnetic assembly 2 and the airflow assembly 3, the airflow assembly 3 can be an exhaust fan (not shown in the figure), the airflow assembly 3 and the electromagnetic assembly 2 are arranged at intervals along the inner and outer directions, and the airflow assembly 3 is used for exhausting air outwards, so that materials are subjected to wind force in the shell 1 in the attractive force direction generated by the electromagnetic assembly 2, and the materials are layered under the action of the electromagnetic assembly 2, the airflow assembly 3 and the gravity field.
In some embodiments, the magnetic separation 100 based on the wind-gravity-magnetic composite force field further comprises a first plate 4, the first plate 4 is a porous medium plate, the first plate 4 is arranged in the cavity 11 to divide the cavity 11 into a first cavity 14 and a second cavity 15, the first cavity 14 and the second cavity 15 are sequentially arranged along the airflow direction, the feeding hole 13 is positioned at the top of the first cavity 14, the discharging hole 12 is positioned at the bottom of the first cavity 14, the feeding hole 13 and the discharging hole 12 are both communicated with the first cavity 14, and the electromagnetic assembly 2 and the airflow assembly 3 are both arranged in the second cavity 15.
Specifically, as shown in fig. 1, the first plate 4 is a porous medium plate, the first plate 4 is arranged in the cavity 11 to divide the cavity 11 into a first cavity 14 and a second cavity 15 along the left-right direction, the second cavity 15 is positioned at the left side of the first cavity 14, the second cavity 15 is a mounting cavity, the electromagnetic component 2 and the airflow component 3 can be mounted in the first cavity 14, the first plate 4 is used for separating materials from the electromagnetic component 2, so that the materials are prevented from entering the electromagnetic component 2 and are difficult to clean, the materials enter the electromagnetic component 2 and also affect magnetic field performance and even damage the electromagnetic component 2, the airflow generated by the airflow component 3 sequentially passes through gaps inside the electromagnetic component 2 and pores of the porous medium plate to enter the first cavity 14, so that the airflow distribution in the first cavity 14 is more uniform, the first cavity 14 is a sorting cavity, the feed port 13 is positioned at the top of the first cavity 14, the discharge port 12 is positioned at the bottom of the first cavity 14, and the materials can flow out of the discharge port 12 after being layered under the action of gravity, attraction force and wind.
It will be appreciated that the flow rate and velocity of the gas produced by the gas flow module 3 may be adjustable and that the gas flow may pass through the electromagnetic module 2 and the porous media plate into the separation zone.
In some embodiments, the porous dielectric plate has a pore size of 1 μm to 50 μm and an aperture ratio of 10% -50%, and is specifically set according to the properties of the size of the material to be sorted, and is mainly used for preventing excessive fine material from entering the magnetic system, because in the field of ore sorting, the ore in a pre-selected stage is not subjected to fine grinding, and the particle size is relatively coarse, but there are small amounts of fine particles (less than 75 μm), so that the first plate 4 with different pore size specifications and aperture ratios is set for adapting to sorting of materials with different particle size compositions.
In some embodiments, the magnetic separation 100 based on the wind-gravity-magnetic composite force field further comprises a second plate 5, the second plate 5 being provided within the discharge port 12 and being movable at the discharge port 12 with respect to the direction of the air flow in order to adjust the size of the flow area of the discharge port 12. Specifically, as shown in fig. 1, the second plate 5 is disposed in the discharge port 12, so that the discharge port 12 is partitioned into a plurality of discharge ports 12 by the second plate 5, so that different particles in the material flow out from different discharge ports 12, and the second plate 5 is movable in the left-right direction in the discharge ports 12, so that the flow area of two adjacent discharge ports 12 is adjusted by adjusting the position of the second plate 5.
In some embodiments, the second board 5 includes a first sub-board 51 and a second sub-board 52 connected in sequence, the first sub-board 51 extending from top to bottom and being inclined toward a direction away from the second sub-board 52, and the second sub-board 52 extending from top to bottom and being inclined toward a direction away from the first sub-board 51. Specifically, as shown in fig. 1, the first sub-board 51 is disposed on the left side of the second sub-board 52, the first sub-board 51 extends from top to bottom and is inclined from right to left, and the second sub-board 52 extends from top to bottom and is inclined from left to right, so that the arrangement of the second board 5 is more reasonable, and in addition, the size of the discharge port 12 can be realized by adjusting the angles of the first sub-board 51 and the second sub-board 52, or changing the second board 5 with different angles.
It should be understood that the adjusting manner of the second plate 5 is not limited herein, for example, the second adjusting plate 5 may be fixed at the discharge hole 12 of the housing 1 by a screw, when the adjustment is needed, the screw may be loosened, and the screw may be fixed at the discharge hole 12 when the second plate 5 is adjusted to a proper position, or a clamping groove is provided in the front-rear direction of the discharge hole 12, and the front-rear ends of the second plate 5 may be clamped in the clamping groove, and the size of the discharge hole 12 is adjusted by moving the position of the second plate 5.
In some embodiments, the feeding hole 13 is disposed adjacent to the electromagnetic component 2, the second plates 5 are plural, the plural second plates 5 are disposed at intervals along the airflow direction to divide the discharging hole 12 into a first discharging hole 121, a second discharging hole 122 and a third discharging hole 123, the first discharging hole 121, the second discharging hole 122 and the third discharging hole 123 are sequentially disposed along a direction away from the electromagnetic component 2, and the first discharging hole 121 and the feeding hole 13 are disposed opposite to each other along the vertical direction at intervals.
Specifically, as shown in fig. 1-2, the feeding port 13 is located at the left side of the casing 1, so as to ensure that the magnetic field captures the magnetic particles and the continuous particles in the material, the two second plates 5 are sequentially arranged at intervals along the left-right direction, so that the discharging port 12 is sequentially separated into a first discharging port 121, a second discharging port 122 and a third discharging port 123 along the left-right direction, the first discharging port 121 is formed by arranging the magnetic particle discharging port 12 and the feeding port 13 at intervals along the up-down direction, the attractive force suffered by the magnetic particles is equal to the wind force, the magnetic particles flow out of the first discharging port 121 along the up-down direction, the wind force suffered by the continuous particles is greater than the attractive force, the continuous particles flow out of the second discharging port 122, the non-magnetic particles only suffer from the wind force, and the non-magnetic particles flow out of the third discharging port 123 in the casing 1 at the farthest, so that the magnetic particles, the continuous particles and the non-magnetic particles flow out of the first discharging port 121, the second discharging port 122 and the third discharging port 123 sequentially pass through the first discharging port 122 and the third discharging port 123.
In some embodiments, the magnetic separation 100 based on the wind-gravity-magnetic composite force field further comprises a first dust removing opening 16 and a second dust removing opening 17, wherein the first dust removing opening 16 is arranged at the top of the shell 1, the second dust removing opening 17 is arranged on the outer peripheral surface of the shell 1, and the first dust removing opening 16 and the second dust removing opening 17 are both communicated with the cavity 11. Specifically, as shown in fig. 1, the first discharging port 121 is disposed at the top of the casing 1 and is located at the right side of the feeding port 13, so that when the material contains extremely fine powder gangue, the fine particles may move upward and rightward under the condition of high air flow speed, and therefore, the dust removing port is disposed at the top, so that the extremely fine powder gangue in the material can be discharged from the chamber 11 through the first dust removing port 16, the second dust removing port 17 is disposed on the outer peripheral surface of the casing 1, and the second dust removing port 17 and the air flow assembly 3 are disposed opposite to each other along the inner and outer direction, and the second dust removing port 17 is a main outlet of the air flow, so that the air flow movement direction is ensured from left to right, and the operation of the air flow assembly 3 is ensured.
In some embodiments, the cross-sectional areas of the inlet 13 and outlet 12 decrease gradually from top to bottom. From this, make things convenient for the material to get into cavity 11 from the inlet, flow out cavity 11 from discharge gate 12 for feed inlet 13 and discharge gate 12 set up more rationally.
It will be appreciated that the flow rate and the flow velocity of the air flow generated by the air component are adjustable, the structure of the electromagnetic component 2 is adjustable, so that the magnetic field strength generated by the electromagnetic component 2 is different, the first plate 4 is replaceable, and the sizes of the discharge port 12 and the feed port 13 are adjustable, thereby meeting the sorting requirements of materials with different properties.
In some embodiments, the electromagnetic assembly 2 includes a plurality of electromagnetic units 21, and the plurality of electromagnetic units 21 are disposed at intervals in the up-down direction, and the magnetism of the adjacent two electromagnetic units 21 toward one end of the airflow assembly 3 is different. Specifically, as shown in fig. 1, the electromagnetic units 21 are sequentially arranged at intervals along the up-down direction, and the magnetic poles on the right sides of two adjacent electromagnetic units 21 are different, in other words, the left sides of the electromagnetic units 21 are sequentially and alternately arranged along N, S, so that the electromagnetic units 21 generate a uniform magnetic field in the chamber 11, and the arrangement of the electromagnetic units 21 is more reasonable.
It is understood that the left side of the arrangement mode of the electromagnetic unit 21 may be all N or S-level, and the electromagnetic unit 21 may be a permanent magnet or an electromagnet, when the electromagnetic unit 21 is a permanent magnet, the magnetic field strength generated by the electromagnetic unit 21 ranges from 0.05T to 0.5T, and when the electromagnetic unit 21 adopts an electromagnet, the electromagnetic unit 21 may further increase the magnetic field strength of the sorting section to 0.5T to 1.5T.
The embodiment of the invention provides a magnetic separation method of magnetic minerals, which comprises the following steps:
s1: the material is put into the magnetic field, falls freely in the gravitational field and is attracted by the magnetic field.
S2: the material is blown or sucked by the air flow, and the material is subjected to wind force in the direction of attractive force in the air flow so as to be layered in the air flow, the magnetic field and the gravitational field.
According to the magnetic separation method of the magnetic minerals, provided by the embodiment of the invention, the magnetic particles, the intergrowth particles and the non-magnetic particles in the materials can be distinguished by arranging the step S1 and the step S2.
In some embodiments, the magnetic particles in the material are subjected to a force of wind equal to the force of attraction of the magnetic particles, the intergrowth particles in the material are subjected to a force of wind greater than the force of attraction of the intergrowth particles, and the non-magnetic particles in the material are subjected to a force of wind of only the air flow, thereby distinguishing the magnetic particles, the intergrowth particles, and the non-magnetic particles. Therefore, the magnetic particles, the connective biological particles and the non-magnetic particles in the material are layered under the actions of a magnetic field, a gravitational field and an air flow.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the invention.
Claims (6)
1. Magnetic separation device based on wind gravity magnetic composite force field, which is characterized by comprising:
the shell is provided with a cavity, a feed inlet and a discharge outlet, the feed inlet is arranged at the top of the shell, the discharge outlet is arranged at the bottom of the shell, and the feed inlet and the discharge outlet are communicated with the cavity;
the electromagnetic assembly and the air flow assembly are arranged on the shell, the electromagnetic assembly can generate a magnetic field to generate attractive force adjacent to the electromagnetic assembly on materials, and the air flow assembly can generate air flow to generate blowing force opposite to the attractive force on the materials so that the materials are layered under the action of the magnetic field and the air flow;
the electromagnetic assembly comprises a cavity, a first plate, a second plate, an electromagnetic assembly, a first air flow assembly and a second air flow assembly, wherein the first plate is a porous medium plate and is arranged in the cavity to divide the cavity into a first cavity and a second cavity;
the second plate is arranged in the discharge hole and can move relative to the air flow direction at the discharge hole so as to adjust the flow area of the discharge hole;
the feed inlet is disposed adjacent to the electromagnetic assembly,
the second plates are arranged at intervals along the airflow direction to divide the discharge hole into a first discharge hole, a second discharge hole and a third discharge hole, the first discharge hole, the second discharge hole and the third discharge hole are sequentially arranged along the direction away from the electromagnetic assembly, and the first discharge hole and the feed hole are oppositely arranged along the upper and lower direction at intervals;
the electromagnetic component and the air flow component are both positioned on the same side of the feeding hole and the discharging hole, the air flow component can blow air in the shell, so that the materials are subjected to wind power away from the electromagnetic component,
or the electromagnetic assembly and the air flow assembly are oppositely arranged in the shell at intervals, the feeding port and the discharging port are both positioned between the electromagnetic assembly and the air flow assembly, and the air flow assembly is used for exhausting air in the shell, so that the materials are subjected to wind power far away from the electromagnetic assembly;
the electromagnetic assembly comprises a plurality of electromagnetic units, the electromagnetic units are arranged at intervals along the up-down direction, and the magnetism of one end of each adjacent two electromagnetic units, which faces the airflow assembly, is different.
2. The magnetic separation device based on the wind-gravity-magnetic composite force field according to claim 1, wherein the second plate comprises a first sub-plate and a second sub-plate which are sequentially connected, the first sub-plate extends from top to bottom and is inclined towards a direction far away from the second sub-plate, and the second sub-plate extends from top to bottom and is inclined towards a direction far away from the first sub-plate.
3. The magnetic separation device based on the wind-gravity-magnetic composite force field according to claim 1, further comprising a first dust removal port and a second dust removal port, wherein the first dust removal port is arranged at the top of the shell, the second dust removal port is arranged on the outer peripheral surface of the shell, the second dust removal port is arranged opposite to the airflow assembly at intervals, and the first dust removal port and the second dust removal port are both communicated with the cavity.
4. The magnetic separation device based on the wind-gravity-magnetic composite force field according to claim 1, wherein the cross sectional areas of the feed inlet and the discharge outlet gradually decrease from top to bottom.
5. A method for magnetic separation of magnetic minerals using a magnetic separation device of a wind-gravity-magnetic composite force field according to any one of claims 1 to 4, comprising:
s1: putting a material into a magnetic field, wherein the material freely falls in a gravitational field and is subjected to attractive force of the magnetic field;
s2: blowing or sucking the material by using an air flow, wherein the material is subjected to wind force in the direction of the attractive force in the air flow, so that the material is layered in the air flow, the magnetic field and the gravitational field.
6. The method of magnetic separation of magnetic minerals according to claim 5, wherein the magnetic particles in said material are subjected to a force of wind equal to the force of attraction to said magnetic particles, the intergrowth particles in said material are subjected to a force of wind greater than the force of attraction to said intergrowth particles, and the non-magnetic particles in said material are subjected to only the force of wind of said air stream, thereby distinguishing said magnetic particles, said intergrowth particles and said non-magnetic particles.
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| CN115837355A (en) * | 2022-11-22 | 2023-03-24 | 广州融捷能源科技有限公司 | Electrode material demagnetizing device and electrode material demagnetizing method |
| CN116251673A (en) * | 2023-03-31 | 2023-06-13 | 蜂巢能源科技股份有限公司 | Separation method and separation equipment for magnetic substances in silicon-based anode material |
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