CN114367377A - Magnetic field generating assembly for orderly separating and obtaining particles and separating method thereof - Google Patents
Magnetic field generating assembly for orderly separating and obtaining particles and separating method thereof Download PDFInfo
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- CN114367377A CN114367377A CN202111533556.3A CN202111533556A CN114367377A CN 114367377 A CN114367377 A CN 114367377A CN 202111533556 A CN202111533556 A CN 202111533556A CN 114367377 A CN114367377 A CN 114367377A
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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
- B03C1/025—High gradient magnetic separators
- B03C1/031—Component parts; Auxiliary operations
- B03C1/033—Component parts; Auxiliary operations characterised by the magnetic circuit
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/0656—Investigating concentration of particle suspensions using electric, e.g. electrostatic methods or magnetic methods
Abstract
The invention discloses a magnetic field generating assembly for orderly separating and obtaining particles and a separating method thereof, wherein the magnetic field generating assembly comprises magnetic poles, magnetic steels and magnetic yokes which are matched in sequence from top to bottom, the magnetic poles and the magnetic steels are arranged in pairs, and the two magnetic poles are respectively fixed on the two magnetic steels; a slit is arranged between the two magnetic poles, the end parts of the two magnetic poles at the two sides of the slit are pole heads with different polarities, and an isolation space is reserved between the two magnetic steels; the magnetic pole, the magnetic steel, the magnetic yoke and the slit are matched to form a magnetic loop; the magnetic yoke is an integral ferromagnetic substance, and the magnetic pole is a ferromagnetic substance; the magnetic steel is made of hard magnetic material with high residual magnetic flux density and larger coercive force. The ferromagnetic material generates magnetic flux density far higher than the residual magnetization of the magnetic steel after the magnetization of the ferromagnetic material is saturated, so that the magnetic flux of the whole magnetic loop can be improved, and the maximum magnetic field gradient of a magnetic field working area is larger than 5.0T/cm. The particles are separated from the liquid fluid under the action of the magnetic field, and ordered deposition according to the size is achieved on a special glass substrate.
Description
Technical Field
The invention relates to a thistle tube type iron spectrometer, in particular to a magnetic field generating assembly for orderly separating and obtaining particles and a separating method thereof.
Background
The ferrograph is a basic device for scientific research and engineering technicians to use ferrograph technology to carry out mechanical wear research and engineering application. The working principle is that a magnetic field working area with high gradient is established, and the ordered separation and acquisition of micron-sized or even smaller abrasion products are realized by utilizing the magnetic field acting force of each point in the area. The magnetic field generating components that create this magnetic field, their materials, construction and dimensions, and their profiles, are very delicate core parameters. However, the magnetic field excitation principle of the magnetic field generating assembly, the spatial distribution of the magnetic field, and the mechanism of particle separation and acquisition are still not well understood, and thus the full performance of the ferrography technology is hindered.
As a thistle type iron spectrometer adopting the same principle, the problem of unreasonable design and utilization of the magnetic field also exists. In addition, the operator lacks the understanding of the working principle of the magnetic field, and the expected effect is often not achieved by using the instrument. For example, the effect is good when detecting a mechanical wear oil sample such as gear oil containing a high concentration of iron-containing substances, but the effect is poor when detecting an aircraft engine oil sample. The reason for this is that the wear product components and particle size distributions in different mechanical lubricating oils are greatly different, and the magnetic field in the working area is either insufficient in inherent strength or has defects in structural design, so that the effects of separation and deposition of particles are not ideal.
Therefore, there is a need for an improved and standardized magnetic field generating assembly for orderly separating and capturing particles and a method for separating the same in existing equipment.
Disclosure of Invention
The invention aims to overcome the defects of the traditional thistle type iron spectrometer and provide a magnetic field generation assembly for orderly separating and obtaining particles and a separation method thereof, so that abrasive particles can achieve a good deposition effect on a spectrum plate.
In order to realize the technical effects, the technical scheme of the invention is as follows: a magnetic field generating assembly for orderly separating and obtaining particles and a separating method thereof comprise magnetic poles, magnetic steels and magnetic yokes which are sequentially matched from top to bottom, wherein the magnetic poles and the magnetic steels are arranged in pairs, and the two magnetic poles are respectively fixed on the two magnetic steels; a slit is arranged between the two magnetic poles, the end parts of the two magnetic poles at the two sides of the slit are pole heads with different polarities, an isolation space is reserved between the two magnetic steels, and the isolation space is communicated with the slit; the magnetic pole, the magnetic steel, the magnetic yoke and the slit are matched to form a magnetic loop. Through the design, a magnetic field acting force can be applied to the spectral slice, and abrasive particles in the oil sample are deposited on the spectral slice under the action of the magnetic field.
The preferable technical scheme is that a spectral plate for separating and depositing particles is arranged above the slit, the spectral plate and the slit are obliquely arranged, and the bottom side of the inclined angle of the spectral plate is superposed with the extending direction of the slit. Through the design, the liquid inlet end and the liquid outlet end of the spectrum sheet have height difference, so that the solvent is uniformly separated and deposited under the action of a gradient magnetic field when flowing from the liquid inlet end to the liquid outlet end.
The preferable technical scheme is that the inclination angle of the spectrum plate is set between 1 degree and 6 degrees. Such a design is a further limitation of the above-described solution.
The preferable technical scheme is that the thickness of the spectrum plate is set between 0.1mm and 0.5 mm. Such a design is a further limitation of the above-described solution.
The preferable technical scheme is that the magnetic yoke is an integral ferromagnetic substance, and the magnetic pole is a ferromagnetic substance.
The preferable technical scheme is that the magnetic steel is made of hard magnetic material with high residual magnetic flux density and large coercive force. Through the design, the ferromagnetic material generates magnetic flux density far higher than the residual magnetization intensity of the magnetic steel after the ferromagnetic material is magnetized and saturated, so that the magnetic flux of the whole magnetic loop can be improved, and the maximum magnetic field gradient of a magnetic field working area is larger than 5.0T/cm.
The preferable technical scheme is that the hard magnetic material is N52H neodymium iron boron material. As an equivalent alternative, the hard magnetic material may also be: alnico hard magnetic material or ferrite hard magnetic material.
The preferred technical scheme is that the two pole heads are provided with wedge-shaped inner chamfers at opposite positions of the slits, and the distance between the two pole heads is gradually enlarged from top to bottom. Through the design, magnetic lines of force are highly converged at the pole head, and a uniform magnetic field with extremely high magnetic flux density is arranged in the slit; the space above the upper surface of the magnetic pole is filled with the diffused magnetic field, and a working area with strong magnetic field and high gradient is formed in a short distance above the slit.
The preferred technical scheme is that the angle of the wedge-shaped inner chamfer is alpha, and the alpha is set between 45 degrees and 75 degrees. Such a design is a further limitation of the above-described aspect, and a is preferably set to 50 °, 60 °, and 70 °. Such a design may achieve an optimal high magnetic field and high gradient effect.
The optimized technical scheme is that the distance between the top end of the wedge-shaped inner chamfer and the top surface of the magnetic pole is r, and the distance between the slits is g; r is set between 0.8mm and 2.4mm, and g is set between 1.0mm and 2.0 mm. The ratio of r to g is 0.8-1.2. Such a design is a further limitation of the above-described scheme.
The preferable technical proposal is that the ratio of r to g is 0.9, 1.0 and 1.1. Such a design is a further limitation of the above-described solution.
The preferred technical scheme does, still includes the magnet steel dog, the magnet steel dog clamp is located two between the magnet steel. Through such design, can prevent that the magnet steel from attracting together under the effect of magnetic force.
The magnetic steel stop block further comprises a protruding block which is arranged in a protruding mode, and the protruding block is clamped between the two magnetic poles. Through such a design, the magnetic poles can be prevented from being attracted together under the action of magnetic force.
The preferred technical scheme does, the protective housing is enclosed to the side surface of magnetic pole, magnet steel and yoke. Through such design, can play certain guard action to yoke, magnet steel and magnetic pole.
The preferable technical scheme is that a music sheet clamp for clamping and fixing a music sheet is fixedly arranged on the upper surface of the magnetic pole; and a nylon lining plate is fixedly arranged on the lower surface of the magnetic yoke. Through the design, the position of the music sheet can be fixed by the music sheet clamp; the nylon lining board has certain shock absorption, oil resistance, weak acid resistance and alkali resistance, and can be used as a base of the magnet yoke.
A separation method for orderly separating and obtaining microparticles, comprising the steps of:
the first step is as follows: distributing the particles in a solvent or collecting liquid fluid with the particles to form detection liquid;
the second step is that: and controlling the detection liquid to flow from the high position to the low position of the spectrum plate, wherein the particles are separated out in sequence according to the size of the particles under the action of a magnetic field in the liquid flow and are deposited on the spectrum plate.
Preferably, the separation method requires the use of a magnetic field generating assembly for ordered separation and capture of the particles.
The preferable technical proposal is that the particles comprise various mechanical abrasion products, including any one of scrap iron, copper scraps, aluminum scraps, oxides, polymers and pollutants; any combination of any two or any plurality.
The preferable technical scheme is that the solvent comprises an oily solvent or a hydrosolvent, and comprises any one of diesel engine oil, gear oil and hydraulic oil; any combination of any two or any plurality.
The preferable technical scheme is that the flow rate of the detection liquid is controlled to be 10-30 ml/h.
The invention has the advantages and beneficial effects that: the magnetic field generating assembly for orderly separating and obtaining particles and the separating method thereof have reasonable design, and the ferromagnetic material generates the residual magnetic flux density far higher than the magnetic steel after the ferromagnetic material is magnetized and saturated, so that the magnetic flux of the whole magnetic loop can be improved; the magnetic lines of force are highly converged at the pole head, a uniform strong magnetic field with extremely high magnetic flux density is formed in the slit, the space above the upper surface of the magnetic pole is filled with a divergent magnetic field, the magnetic flux density is suddenly weakened, a strong magnetic field and high-gradient working area is formed in a short distance above the slit, the maximum magnetic field gradient is larger than 5.0T/cm, and the abrasive particles in the oil sample are well and orderly separated according to the size of the abrasive particles and deposited on the spectral slice under the action of the magnetic field.
Drawings
FIG. 1 is a magnetic flux density diagram of an embodiment of a magnetic field generating assembly for orderly separation and capture of particles and a method for separation thereof according to the present invention;
FIG. 2 is a schematic view of a magnetic pole magnet steel yoke structure of an embodiment of the magnetic field generating assembly for orderly separating and obtaining particles and a separating method thereof according to the present invention;
FIG. 3 is a schematic diagram of the magnetic flux density in a magnetic field of a spectral slice of an embodiment of the magnetic field generating assembly and method for sequentially separating and capturing particles of the present invention;
FIG. 4 is a schematic diagram of a magnetic yoke structure of a magnetic pole of a spectral slice of an embodiment of a magnetic field generating assembly for orderly separating and obtaining particles and a separating method thereof according to the invention;
FIG. 5 is a schematic view of a magnetic field assembly according to an embodiment of the present invention for orderly separating and capturing particles and a method for separating the same;
FIG. 6 is an exploded view of a magnetic field assembly according to an embodiment of the present invention for orderly separating and capturing particles and a method for separating the same;
FIG. 7 is an exploded view (from another perspective) of a magnetic field assembly according to an embodiment of the magnetic field assembly and method for orderly separating and capturing particles of the present invention;
FIG. 8 is a front view of a magnetic field assembly for orderly separating and capturing particles and a method for separating particles according to an embodiment of the present invention;
FIG. 9 is a cross-sectional view along A-A of FIG. 8 of an embodiment of a magnetic field generating assembly and method for orderly separating and capturing particles according to the present invention;
FIG. 10 is a schematic view of the inclination angle β of the spectral plate of the present invention;
FIG. 11 is a schematic diagram of an analytical iron spectrometer;
FIG. 12 is a schematic diagram of the distribution of abrasive particles on a spectral plate in an embodiment of the magnetic field generating assembly for orderly separation and capture of particles and the method for separation thereof according to the present invention;
in the figure: in the figure: 1. a magnetic pole; 2. magnetic steel; 3. a magnetic yoke; 4. a slit; 5. a wedge-shaped inner chamfer; 6. a magnetic steel block; 61. a bump; 7. a protective shell; 8. a music sheet clamp; 9. a nylon lining plate; 10. locking the bolt; 11. locking the nut; 12. a spectral slice; 13. a pole head; 14. an intervening space; a1, trace air pump; a2, test tube; a3, analyzing an oil sample; a4, an oil guide pipe; a5, high gradient strong magnet; a6, ferrographic substrate; a7, an oil discharge pipe; a8, a waste oil cup; a9, particle deposition tape.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", "vertical", "top", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Examples
As shown in fig. 1-12, the magnetic field generating assembly for orderly separating and obtaining particles and the separating method thereof of the embodiment include a magnetic pole 1, a magnetic steel 2 and a magnetic yoke 3 which are sequentially matched from top to bottom, the magnetic pole 1 and the magnetic steel 2 are both arranged in pairs, and the two magnetic poles 1 are respectively fixed on the two magnetic steels 2; a slit 4 is arranged between the two magnetic poles 1, the end parts of the two magnetic poles 1 at the two sides of the slit 4 are pole heads 13 with different polarities, an isolation space 14 is reserved between the two magnetic steels 2, and the isolation space 14 is communicated with the slit 4; the magnetic pole 1, the magnetic steel 2, the magnetic yoke 3 and the slit 4 are matched to form a magnetic loop.
A spectral plate 12 for separating and depositing particles is arranged above the slit 4, the spectral plate 12 is arranged obliquely to the slit 4, and the bottom side of the inclination angle of the spectral plate 12 (the bottom side is a virtual side, see fig. 10, the inclination angle of the spectral plate 12 is beta) is arranged to coincide with the extending direction of the slit 4. The spectral plate is a light-transmitting substrate, and is preferably a glass substrate.
The inclination angle of the spectral slice 12 is set between 1 degree and 6 degrees, including 1 degree and 6 degrees.
The thickness of the spectral slice 12 is set between 0.1mm and 0.5mm, inclusive of 0.1mm and 0.5 mm.
The magnetic yoke 3 is an integral ferromagnetic substance, and the magnetic pole 1 is a ferromagnetic substance.
The magnetic steel 2 is made of hard magnetic material with high residual magnetic flux density and larger coercive force.
The hard magnetic material is N52H NdFeB material. As an equivalent alternative, the hard magnetic material may also be: alnico hard magnetic material or ferrite hard magnetic material.
The two pole heads 13 are provided with wedge-shaped inner chamfers 5 at opposite positions forming the slit 4, and the distance between the two pole heads 13 is gradually enlarged from top to bottom.
The angle of the wedge-shaped inner chamfer is alpha, and the alpha is arranged between 45 degrees and 75 degrees (including end values of 45 degrees and 75 degrees). The preferred technical scheme is that alpha is 50 degrees, 60 degrees and 70 degrees. Such a design may achieve an optimal high magnetic field and high gradient effect. With 60 ° being the most preferred.
The distance between the top end of the wedge-shaped inner chamfer and the top surface of the magnetic pole is r, and the distance between the slits is g; r is set between 0.8mm and 2.4mm (inclusive of 0.8mm and 2.4 mm), and g is set between 1.0mm and 2.0mm (inclusive of 1.0mm and 2.0 mm). The ratio of r to g is 0.8-1.2 (inclusive of 0.8 and 1.2). The ratio of r to g is further preferably a punctuation value of 0.9, 1.0, 1.1. Such a design may achieve an optimal high magnetic field and high gradient effect. With 1.0 being the most preferred.
Still include magnet steel dog 6, magnet steel dog 6 presss from both sides and locates between two magnet steels 2.
The magnetic steel block 6 further comprises a protruding block 61 which is arranged in a protruding mode, and the protruding block 61 is clamped between the two magnetic poles 1.
And a protective shell 7 is arranged around the side surfaces of the magnetic pole 1, the magnetic steel 2 and the magnetic yoke 3.
The upper surface of the magnetic pole 1 is fixedly provided with a music sheet clamp 8 for clamping and fixing a music sheet 12; the lower surface of the magnetic yoke 3 is fixedly provided with a nylon lining plate 9.
A separation method for orderly separating and obtaining particles, the separation method requiring the use of a magnetic field generating assembly for orderly separating and obtaining particles, comprising the steps of:
the first step is as follows: distributing the particles in a solvent or collecting liquid fluid with the particles to form detection liquid;
the second step is that: the detection liquid is controlled to flow from the high position to the low position of the spectrum plate 12, the particles are separated out in sequence according to the size of the particles in the liquid flow under the action of a magnetic field and are deposited on the spectrum plate to form a particle deposition band A9.
The particles comprise any one of various mechanical abrasion products, including scrap iron, copper scraps, aluminum scraps, oxides, polymers and pollutants; any combination of any two or any plurality.
The solvent comprises an oily solvent or a hydrosolvent, and comprises any one of diesel engine oil, gear oil and hydraulic oil; any combination of any two or any plurality.
The flow rate of the detection solution is controlled to be 10-30 ml/h (including 10ml/h and 30 ml/h).
Mode of use of the examples:
the ferromagnetic material generates magnetic flux density far higher than the residual magnetization of the magnetic steel after the ferromagnetic material is magnetized and saturated, so that the magnetic flux of the whole magnetic loop can be improved; the magnetic lines of force are highly converged at the pole head, a uniform strong magnetic field with extremely high magnetic flux density is formed in the slit 4, the space above the upper surface of the magnetic pole 1 is filled with a divergent magnetic field, the magnetic flux density is suddenly weakened, a strong magnetic field and high-gradient working area is formed in a short distance above the slit 4, and the maximum magnetic field gradient is larger than 5.0T/cm.
During sample preparation, the oil sample is directly poured into a thistle type glass tube after being diluted, and the oil sample falls onto the spectrum piece 12 under the action of gravity. Because the spectrum plate 12 is arranged obliquely, the oil sample flows through a high-gradient strong magnetic field under the action of gravity. While the abraded particles in the oil sample sequentially pass through the magnetic field space with different gradient values, the abraded particles are deposited on the surface of the spectral slice 12 according to the size order of the abraded particles. The abrasive particles can not deform or break due to extrusion and collision, and the original information of the abrasive particles can be kept.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (23)
1. The magnetic field generation assembly for orderly separating and obtaining particles is characterized by comprising magnetic poles (1), magnetic steels (2) and magnetic yokes (3) which are sequentially matched from top to bottom, wherein the magnetic poles (1) and the magnetic steels (2) are arranged in pairs, and the two magnetic poles (1) are respectively fixed on the two magnetic steels (2); a slit (4) is arranged between the two magnetic poles (1), the end parts of the two magnetic poles (1) at the two sides of the slit (4) are pole heads (13) with different polarities, an isolation space (14) is reserved between the two magnetic steels (2), and the isolation space (14) is communicated with the slit (4); the magnetic pole (1), the magnetic steel (2), the magnetic yoke (3) and the slit (4) are matched to form a magnetic loop.
2. The magnetic field generating assembly for orderly separating and acquiring particles according to claim 1, wherein a spectral plate (12) for separating and depositing particles is disposed above the slit (4), the spectral plate (12) is disposed obliquely to the slit (4), and the bottom of the oblique angle of the spectral plate (12) is disposed coincident with the extending direction of the slit (4).
3. The magnetic field generating assembly for ordered separation and retrieval of particles according to claim 2, wherein the angle of inclination of said spectral slices (12) is set between 1 ° and 6 °.
4. The magnetic field generating assembly for ordered separation and acquisition of particles according to claim 2, characterized in that the thickness of said spectral plate (12) is set between 0.1mm and 0.5 mm.
5. The magnetic field generating assembly for ordered separation and acquisition of particles according to claim 1 or 2, characterized in that said yoke (3) is a monolithic ferromagnetic substance and said pole (1) is a ferromagnetic substance.
6. Magnetic field generating assembly for ordered separation and retrieval of particles according to claim 1 or 2, characterized in that the material of said magnetic steel (2) is a hard magnetic material with high residual magnetic flux density and large coercivity.
7. The ordered separated and captured particulate magnetic field generating assembly according to claim 6, wherein said hard magnetic material is N52H NdFeB or AlNiCo or ferrite hard magnetic material.
8. The magnetic field generation assembly for ordered separation and retrieval of particles according to claim 1 or 7, characterized in that the maximum magnetic field gradient of the magnetic field working area above the slit (4) is greater than 5.0T/cm.
9. The magnetic field generating assembly for orderly separation and extraction of particles according to claim 1, characterized in that two said pole heads (13) are provided with wedge-shaped inner chamfers (5) at opposite places where said slits (4) are formed, and the distance between the two said pole heads (13) is gradually enlarged from top to bottom.
10. The assembly according to claim 8, characterized in that said wedge-shaped inner chamfer (5) has an angle α, which is set between 45 ° and 75 °.
11. The ordered particle separating and extracting magnetic field generating assembly of claim 9 wherein α is 60 °.
12. The magnetic field generation assembly for orderly separation and acquisition of particles according to claim 8 or 9, characterized in that the top of the wedge-shaped inner chamfer (5) is spaced from the top surface of the magnetic pole (1) by r, and the slits (4) are spaced by g; r is set between 0.8mm and 2.4mm, and g is set between 1.0mm and 2.0 mm.
13. The magnetic field generating assembly for ordered separation and retrieval of particles of claim 11, wherein the ratio of r to g is 0.8 to 1.2.
14. The ordered particle segregating and retrieving magnetic field generating assembly of claim 12, wherein a ratio of r to g is 1.
15. The magnetic field generation assembly for orderly separating and obtaining particles according to claim 1, further comprising a magnetic steel block (6), wherein the magnetic steel block (6) is clamped between the two magnetic steels (2).
16. The magnetic field generating assembly for orderly separating and obtaining particles according to claim 13, wherein the magnetic steel block (6) further comprises a protruding block (61), and the protruding block (61) is clamped between the two magnetic poles (1).
17. The assembly according to claim 1, characterized in that the side surfaces of the poles (1), magnets (2) and yokes (3) are surrounded by a protective shell (7).
18. The magnetic field generation assembly for orderly separating and obtaining particles according to claim 2, wherein the upper surface of the magnetic pole (1) is fixedly provided with a spectral slice clamp (8) for clamping and fixing the spectral slice (12); and a nylon lining plate (9) is fixedly arranged on the lower surface of the magnetic yoke (3).
19. A separation method for orderly separating and obtaining particles, which is characterized by comprising the following steps:
the first step is as follows: distributing the particles in a solvent or collecting liquid fluid with the particles to form detection liquid;
the second step is that: and controlling the detection liquid to flow from the high position to the low position of the spectrum plate (12), wherein the particles are separated out in sequence according to the size of the particles under the action of a magnetic field in the liquid flow and are deposited on the spectrum plate.
20. The method of claim 19, wherein the separation assembly of any one of claims 1 to 18 is used.
21. The method of claim 19, wherein the particles comprise mechanical wear products including any one of scrap iron, scrap copper, scrap aluminum, oxides, polymers, contaminants; any combination of any two or any plurality.
22. The method for orderly separating and obtaining the fine particles according to claim 19, wherein the solvent comprises an oily solvent or a water solvent, including any one of diesel oil, gear oil and hydraulic oil; any combination of any two or any plurality.
23. The method of claim 19, wherein the flow rate of the detection liquid is controlled to be 10-30 ml/h.
Priority Applications (1)
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