A transverse electrohydraulic effect rock fragmentation device and method
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JINDUICHENG MOLYBDENUM GROUP CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-06-26
Smart Images
Figure CN120132973B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of mineral processing technology, and in particular to a transverse electrohydraulic effect crushing device and method. Background Technology
[0002] Mineral resources play a crucial role in my country's economic development; however, my country currently faces numerous challenges in mineral resource development. The traditional "crushing-grinding-beneficiation" process suffers from high energy consumption, severe over-crushing, and significant subsequent resource losses, making it difficult to meet the ever-increasing demand for mineral production. While existing shock wave ore crushing devices have improved crushing efficiency to some extent, they suffer from uneven shock wave energy distribution, unsatisfactory crushing effects on some ores, and easy damage to the metal wires. This results in poor consistency and stability of the overall crushing effect, increased equipment maintenance costs, and reduced production efficiency.
[0003] Chinese patent CN114433330A discloses a device and method for controlling shock wave crushing of ore. The device includes a cylinder and a shock wave generating device. A screen plate is provided in the middle of the cylinder, and the screen plate is provided with a plurality of screen holes for crushed stone to pass through. A water injection pipe is provided in the upper part of the cylinder, and a water discharge pipe is provided in the bottom of the cylinder. The shock wave generating device is provided at the upper end of the cylinder, and the metal wire of the shock wave generating device is located in the upper part of the cylinder.
[0004] While the above-mentioned scheme utilizes shock waves to subject the ore to intense impact force in a very short time, rapidly breaking the bonds between mineral particles and achieving efficient dissociation, compared to the traditional "crushing-grinding-beneficiation" process, it avoids the cumbersome multi-stage crushing and grinding process, significantly shortening the process flow and improving production efficiency. However, in actual operation, it is difficult to ensure a completely uniform energy distribution of the shock wave within the cylinder. Some ores may receive insufficient impact energy, failing to achieve the desired crushing effect; while other ores may be over-crushed due to excessive energy, affecting the consistency and stability of the overall crushing effect. Furthermore, the metal wire, under high-frequency use, is susceptible to fatigue and breakage due to high temperature, high pressure, and impact force. Damage to the metal wire not only affects the normal generation of shock waves but also increases equipment maintenance costs and downtime, reducing production efficiency.
[0005] Therefore, we propose a transverse electrohydraulic effect ore crushing device. Summary of the Invention
[0006] The main purpose of this application is to provide a transverse electrohydraulic effect crushing device and method, which aims to solve the problems of uneven shock wave energy distribution, poor crushing effect of some ores and easy damage of metal wires in the prior art, so as to achieve efficient and stable crushing of ores and improve the utilization rate of mineral resources.
[0007] To achieve the above objectives, this application provides a transverse electrohydraulic effect crushing device, comprising: a crushing chamber, wherein a transverse crushing cavity is provided in the crushing chamber, a screen plate is provided in the transverse crushing cavity, the screen plate divides the transverse crushing cavity into an upper ore crushing cavity and a lower ore stratification cavity, an electrohydraulic effect generating system is provided in the transverse crushing cavity, and a water inlet is provided on one side wall of the transverse crushing cavity;
[0008] The electrohydraulic effect generating system includes a high-voltage electrode and a ground electrode. The high-voltage electrode is arranged along the axis of the transverse crushing chamber through a positioning part. The output end of the high-voltage electrode is located inside the transverse crushing chamber. The side wall of the output end of the high-voltage electrode is provided with a spiral structure. The protrusion of the spiral structure is sharply set. The output end of the ground electrode is connected to the side wall of the transverse crushing chamber. The input end of the high-voltage electrode and the input end of the ground electrode are respectively connected to the two output ends of the high-voltage DC power supply. When the high-voltage DC power supply discharges, the protrusion of the spiral structure and the side wall of the transverse crushing chamber break down the liquid medium between them and generate a shock wave.
[0009] The helix angle of the outer peripheral spiral structure of the high-voltage electrode output terminal is set to 30°-45°.
[0010] A first insulating ring is circumferentially arranged at the input end of the high-voltage electrode, and a second insulating ring is circumferentially arranged at the convex ring in the middle of the output end of the high-voltage electrode.
[0011] The first insulating ring is provided with a radially protruding limiting platform. One side of the limiting platform is closely fitted with the top plate of the crushing bin and extends axially to the outside of the through hole of the top plate of the crushing bin. The other side of the limiting platform is provided with a radially concave outer curved surface, and the outer curved surface is embedded with an annular permanent magnet array. The magnetic field gradient direction is at an angle of 22.5° with the axis of the high voltage electrode input end.
[0012] The ring-shaped permanent magnet array includes several permanent magnet units distributed in a ring outside the core line of the high-voltage electrode input end. The permanent magnet units are arranged in a segmented fan-shaped Halbach array, and the magnetization direction of adjacent units rotates gradually from 45° to 90°, so that the magnetic field strength is superimposed and enhanced on the inner or outer side of the core line of the high-voltage electrode input end, while it is significantly weakened on the other side.
[0013] A conductive buffer layer is provided between every two adjacent permanent magnet units. The conductive buffer layer is made of silicone rubber composite material doped with carbon nanotubes, with a thickness of 0.5-1.2 mm and a resistivity controlled in the range of 10^3-10^5 Ω·m.
[0014] The sieve plate is provided with an annular permanent magnet, and the magnetic field of the annular permanent magnet and the annular permanent magnet array cooperate with each other.
[0015] To achieve the above objectives, this application also provides a transverse electrohydraulic effect ore crushing method, including the transverse electrohydraulic effect ore crushing device described in any one of the above claims, characterized in that it further includes the following steps:
[0016] S1. Feed the ore into the crushing bin through the feed inlet;
[0017] S2. Start the electrohydraulic effect generation system, apply high voltage through the high voltage electrode input terminal to polarize and break down water molecules to form plasma channels and generate shock waves;
[0018] S3. The shock wave propagates in the form of a spherical wave and forms a regular vortex flow under the guidance of the high-voltage electrode output end, which performs preliminary crushing of the ore.
[0019] S4. The initially crushed ore falls from the upper ore crushing chamber into the lower ore stratification chamber through the screen plate. At the same time, the ore in the lower ore stratification chamber continues to be crushed and mixed under the action of vortex flow.
[0020] S5. After being subjected to multiple shock waves, the ore that has reached the required crushing fineness and uniformity is discharged through the discharge port.
[0021] Preferably, step S2 further includes injecting an appropriate amount of deionized water into the transverse crushing chamber through the water inlet.
[0022] The beneficial effects of the technical solution of this invention are as follows:
[0023] The transverse electrohydraulic effect crushing device can adapt to the crushing requirements of ores of different hardness and size. By adjusting the voltage and current intensity of the high-voltage electrode, the energy and frequency of the shock wave can be controlled, thereby achieving effective crushing of different types of ores. Simultaneously, due to the symmetrical arrangement of the high-voltage electrode and the screen plate, as well as the design of the high-voltage electrode, the ore is subjected to uniform impact force within the transverse crushing chamber, thus achieving uniform crushing. Furthermore, compared to existing technologies, the synergistic effect of "electro-shock wave crushing + rotary shearing crushing" formed by the high-voltage electrode and the spiral structure greatly improves the crushing efficiency and quality of the ore.
[0024] In practical applications, when ores of varying hardness and size enter the transverse electrohydraulic effect crushing device, the strong electric field generated between the high-voltage electrode and the ground electrode first polarizes and breaks down water molecules to form plasma channels. The shock wave generated by the instantaneous vaporization and expansion of the water performs the initial crushing of the ore. Furthermore, during this crushing process, the energy and frequency of the shock wave can be adjusted according to the characteristics of the ore, ensuring that different types of ores are effectively crushed, further refining the ore particles, and making the crushing more uniform, reducing over-crushing. Thus, on the one hand, electro-shock wave crushing can quickly break the ore into smaller particles, providing a good foundation for subsequent rotary shear crushing; on the other hand, rotary shear crushing further refines the ore particles, improving the fineness and uniformity of the crushed ore.
[0025] Subsequently, guided by the spiral structure, the shock wave propagated outwards in the form of a spherical wave, forming a regular vortex flow. The ore was encased in the vortex, and under the continuous action of the shock wave, the ore particles constantly collided and rubbed against each other.
[0026] Compared to traditional vertical discharge methods, this increases the contact area and duration of the shock wave with the ore. Furthermore, the spiral structure's helix angle optimizes the ore's movement path, resulting in a more reasonable residence time for the ore within the crushing chamber. This ensures that each impact crushing operation effectively impacts the ore. The combined effect of these multiple factors significantly enhances crushing efficiency. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the internal structure of a transverse electrohydraulic effect crushing device in one embodiment of this application;
[0028] Figure 2 This is a schematic diagram of the internal structure of the transverse electrohydraulic effect crushing device in one embodiment of this application;
[0029] Figure 3 This is a schematic diagram of the structure of a ring permanent magnet array in one embodiment of this application;
[0030] Figure 4 This is a schematic diagram of the structure of a ring permanent magnet array in one embodiment of this application;
[0031] Figure 5 This is a schematic diagram of the internal structure of the transverse electrohydraulic effect crushing device in another embodiment of this application.
[0032] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0033] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0034] Furthermore, descriptions using terms such as "first" and "second" in this application are for descriptive purposes only (e.g., to distinguish identical or similar elements) and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, technical solutions from different embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If a combination of technical solutions is contradictory or impossible to implement, such a combination should be considered nonexistent and not within the scope of protection claimed in this application.
[0035] See Figure 1 The present invention proposes a transverse electrohydraulic effect crushing device, comprising: a crushing chamber 100, wherein a transverse crushing chamber 200 is provided in the crushing chamber 100, a screen plate 300 is provided in the transverse crushing chamber 200, the screen plate 300 divides the transverse crushing chamber 200 into an upper ore crushing chamber 201 and a lower ore stratification chamber 202, and an electrohydraulic effect generating system 400 is provided in the transverse crushing chamber 200.
[0036] The electrohydraulic effect generation system 400 includes a high-voltage electrode and a ground electrode. The high-voltage electrode is arranged along the axis of the transverse crushing chamber 200 via a positioning part 402. The output end 403 of the high-voltage electrode is located inside the transverse crushing chamber 200. The side wall of the output end 403 of the high-voltage electrode is provided with a spiral structure, and the protrusion of the spiral structure is sharply set. The output end of the ground electrode is connected to the side wall of the transverse crushing chamber 200. The input end 401 of the high-voltage electrode and the input end of the ground electrode are respectively connected to the two output ends of the high-voltage DC power supply. When the high-voltage DC power supply discharges, the protrusion of the spiral structure and the side wall of the transverse crushing chamber 200 break down the liquid medium between them and generate a shock wave.
[0037] Specifically, when a high voltage is applied, a strong electric field is formed between the spiral structure tip on the outer surface of the high-voltage electrode output terminal 403 and the side wall of the transverse crushing chamber 200. This rapidly polarizes and breaks down water molecules, forming a plasma channel. The water vaporizes and expands instantaneously, generating a powerful shock wave. The shock wave propagates outwards in the form of a spherical wave, enveloping the ore within it. Under the action of the shock wave, the ore continuously collides and rubs against each other, thus achieving a more efficient crushing effect.
[0038] Meanwhile, to further improve the stability and reliability of the electrohydraulic effect generation system 400, a special insulating and wear-resistant coating is applied to the surface of the high-voltage electrode. This coating, composed of high-purity alumina ceramic particles and silicone resin, possesses extremely high insulation resistance and hardness. It not only effectively prevents the high-voltage electrode from being oxidized and corroded during long-term use, extending its service life, but also reduces the frictional resistance between the high-voltage electrode and the surrounding medium, thus lowering energy loss.
[0039] In this embodiment, the transverse electrohydraulic effect crushing device can adapt to the crushing requirements of ores with different hardness and size. By adjusting the voltage and current intensity of the high-voltage electrode, the energy and frequency of the shock wave can be controlled, thereby achieving effective crushing of different types of ores. Simultaneously, due to the design of the high-voltage electrode output terminal 403, the ore is subjected to a uniform impact force within the transverse crushing chamber 200, thus achieving uniform crushing of the ore. Furthermore, compared to existing technologies, the synergistic effect of "electro-shock wave crushing + rotary shear crushing" formed by the high-voltage electrode output terminal 403 and the spiral structure greatly improves the crushing efficiency and quality of the ore.
[0040] In practical applications, when ores of varying hardness and size enter the transverse electrohydraulic effect crushing device, the strong electric field generated between the high-voltage electrode and the ground electrode first polarizes and breaks down water molecules to form plasma channels. The shock wave generated by the instantaneous vaporization and expansion of the water performs the initial crushing of the ore. Furthermore, during this crushing process, the energy and frequency of the shock wave can be adjusted according to the characteristics of the ore, ensuring that different types of ores are effectively crushed, further refining the ore particles, and making the crushing more uniform, reducing over-crushing. On the other hand, electro-shock wave crushing can quickly break the ore into smaller particles, providing a good foundation for subsequent rotary shear crushing; conversely, rotary shear crushing further refines the ore particles, improving the fineness and uniformity of the crushed ore.
[0041] Subsequently, guided by the spiral structure, the shock wave propagated outwards in the form of a spherical wave, forming a regular vortex flow. The ore was encased in the vortex, and under the continuous action of the shock wave, the ore particles constantly collided and rubbed against each other.
[0042] Furthermore, the helix angle of the outer circumferential spiral structure of the high-voltage electrode output terminal 403 is set to 30°-45°, and the high-voltage electrode is made of a tungsten-copper alloy gradient material. Compared with the traditional vertical discharge method, this increases the contact area and action time between the shock wave and the ore. Simultaneously, the helix angle of the outer circumferential spiral structure of the high-voltage electrode output terminal 403 optimizes the ore's movement path, making the ore's residence time within the crushing chamber 100 more reasonable. This ensures that each impact crushing operation effectively impacts the ore. The combined effect of these multiple factors significantly enhances the crushing efficiency.
[0043] In one embodiment, a first insulating ring 405 is circumferentially provided at the high-voltage electrode input terminal 401, and a second insulating ring 406 is circumferentially provided at the convex ring 407 in the middle of the high-voltage electrode output terminal 403.
[0044] In this embodiment, the first insulating ring 405 and the second insulating ring 406 effectively prevent direct contact between the high-voltage electrode and external conductive materials (such as water, ore particles, etc.), greatly reducing the probability of leakage and avoiding equipment failure and increased energy consumption caused by leakage. Simultaneously, the electric field around the high-voltage electrode can be guided and constrained, concentrating it in a specific area between the high-voltage electrodes, i.e., the crushing area where the ore is located. This enhances the electrohydraulic effect, allowing water molecules to be polarized and broken down in a more precise area to form plasma channels. The resulting shock wave energy is more concentrated and directional, improving the crushing efficiency of the ore and reducing unnecessary energy loss.
[0045] See Figures 2-3 In one embodiment, the first insulating ring 405 is provided with a radially protruding limiting platform 408. One side of the limiting platform 408 is closely fitted with the top plate of the crushing bin 100 and extends axially to the outside of the through hole of the top plate of the crushing bin 100. The other side of the limiting platform 408 is provided with a radially concave outer curved surface, and the outer curved surface is embedded with an annular permanent magnet array 409, the magnetic field gradient direction of which forms an angle of 22.5° with the axis of the high voltage electrode.
[0046] In this embodiment, the tight fit between the limiting platform 408 and the through hole in the top plate of the crushing chamber 100 provides precise positioning for the high-voltage electrode input end 401. During equipment operation, even under the influence of dynamic forces such as rotation and ore impact, the high-voltage electrode can maintain a stable position without shifting or shaking. This ensures the stability and uniformity of the electric field distribution in the electrohydraulic effect generation system 400, providing a reliable guarantee for achieving efficient ore crushing.
[0047] The radially concave outer curved surface and the embedded annular permanent magnet array 409 on the other side of the limiting stage 408 have a more unique function. The magnetic field generated by the annular permanent magnet array 409 forms a 22.5° angle with the axis of the high-voltage electrode. When the electrohydraulic effect generation system 400 is working, a specific electric field distribution is formed around the high-voltage electrode. Then, through the interaction between the magnetic field and the electric field formed at the specific angle, the trajectory of charged particles is subtly controlled.
[0048] Specifically, the presence of a magnetic field generates a Lorentz force on charged particles in an electric field, deflecting their motion. In this embodiment, a 22.5° magnetic field gradient can guide charged particles in a direction more conducive to ore crushing. For example, during the process of water molecules being polarized and breaking down to form plasma channels, the 22.5° angle between the magnetic field and the electric field causes the trajectory of charged particles to deflect in a spiral manner. Simultaneously, the magnetic field gradient guides the charged particle group to generate asymmetric stress waves when impacting the ore. Due to the resonance effect between the Lorentz force component formed by the 22.5° angle and the inherent weak surface orientation of the ore, the stress wave propagates faster and can also guide particles to gather towards ore cracks or stress concentration areas (such as grain boundaries and micro-defects). According to Paschen's law, the energy density of a plasma channel is proportional to the square of the electric field strength. Directional control of the magnetic field can increase the energy release efficiency per unit volume by approximately 30%, creating an "energy beam" effect. This ensures that helically moving charged particles form a high-density energy flow under the guidance of the magnetic field, and their trajectory dynamically couples with the microcrack network within the ore. As the plasma channel expands, the energy beam preferentially penetrates along defect regions such as grain boundaries and dislocations, resulting in a local energy density 1.8-2.3 times that of conventional uniform discharge.
[0049] Furthermore, the curvature of the annular permanent magnet array forms a conjugate geometric relationship with the surface of the high-voltage electrode, ensuring that the peak value of the equivalent pressure acting on the ore surface remains stable at 1.2-1.5 GPa throughout the entire working range, for example, when the electrode spacing changes by ±2 mm and the magnetic field gradient deviation is <3%, thus avoiding the "over-crushing" phenomenon caused by energy dispersion.
[0050] Simultaneously, the synergistic effect of this magnetic and electric fields can reduce energy dispersion and loss caused by the disordered movement of charged particles. In a traditional electrohydraulic effect generation system 400, the movement of charged particles may be relatively random, resulting in some energy not being effectively used for ore crushing but being dissipated as heat. In this embodiment, by guiding the charged particles with a magnetic field, more energy can be concentrated in the direction required for ore crushing, improving energy utilization efficiency and reducing energy consumption.
[0051] In one embodiment, the annular permanent magnet array 409 includes a plurality of permanent magnet units 410 arranged in a ring outside the core line of the high voltage electrode output terminal 403. The permanent magnet units 410 are arranged in a segmented fan-shaped Halbach array, and the magnetization direction of adjacent units rotates gradually from 45° to 90°, so that the magnetic field strength is superimposed and enhanced on one side (inner or outer side) of the core line of the high voltage electrode output terminal 403, while the other side is significantly weakened. The permanent magnet units 410 are bonded together with non-magnetic adhesive.
[0052] In this embodiment, the specific magnetic field distribution generated by the segmented ring-shaped Halbach array interacts with the electric field around the high-voltage electrode, resulting in a more optimized coupling effect. Specifically, the magnetic field strength is superimposed and enhanced on one side of the 403 axis core wire at the output end of the high-voltage electrode, while the magnetic field on the other side is significantly weakened, forming a strong magnetic field "gravity zone." During the electrohydraulic effect, when water molecules are polarized and break down to form plasma channels, charged particles are subjected to the dual effects of magnetic and electric fields. Simultaneously, the enhanced magnetic field can more effectively guide charged particles to gather towards the side with greater magnetic field strength, resulting in a smaller magnetic force on the charged particles in that region. This ensures that charged particles do not disperse too much energy in insignificant areas, but rather concentrate the main energy on the side with enhanced magnetic field, focusing the energy on a single "point," avoiding random energy loss, making the crushing energy more concentrated, and more conducive to efficient ore crushing.
[0053] Furthermore, the permanent magnet unit 410 in the segmented ring-shaped Halbach array is made of high-performance neodymium iron boron magnet material. This material can maintain strong magnetic properties in complex electromagnetic environments. Moreover, neodymium iron boron magnets have excellent high-temperature resistance, which can withstand the heat generated by current flow during the electrohydraulic effect, ensuring the stability of the magnetic field strength during long-term operation.
[0054] See Figure 4 In one embodiment, a conductive buffer layer 411 is provided between every two adjacent permanent magnet units 410. The conductive buffer layer 411 is made of a silicone rubber composite material doped with carbon nanotubes, with a thickness of 0.5-1.2 mm and a resistivity controlled in the range of 10^3-10^5 Ω·m.
[0055] In this embodiment, when a voltage is applied, the conductive buffer layer acts as a resistive element, limiting and guiding the current flow along a preset path. This effectively avoids the short-circuit risk that might be caused by the current directly passing through the permanent magnet unit, ensuring a uniform distribution of the electric field within the crushing chamber and enhancing the stability and controllability of the electrohydraulic effect. Furthermore, the presence of the conductive buffer layer does not interfere with the magnetic field generated by the annular permanent magnet array 409; instead, it works in conjunction with it to form a more complex and precise electromagnetic environment. The Lorentz force exerted by the magnetic field on charged particles, combined with the driving force of the electric field, guides the charged particles to gather in areas more conducive to ore crushing, such as near cracks or weak points in the ore. Through its synergistic effect with the electric field, it improves the energy concentration and directionality of the shock wave, promoting uniform crushing of ore particles and reducing over-crushing or under-crushing.
[0056] Meanwhile, the addition of a conductive buffer layer, acting as a physical isolation layer, effectively protects the permanent magnet unit from external environmental influences, including mechanical vibration and temperature changes. This helps maintain the stability of the magnetic field and extends the service life of the permanent magnet. Furthermore, the elastic properties of the silicone rubber composite material can absorb a certain amount of mechanical stress, reducing damage to the system caused by vibrations generated during equipment operation, further improving the overall stability and reliability of the system.
[0057] See Figure 5 In one embodiment, an annular permanent magnet 600 is provided inside the sieve plate 300. The annular permanent magnet 600 cooperates with the magnetic field of the annular permanent magnet array 409 to further enhance the control of the movement of charged particles during the ore crushing process. This makes the sieve plate 300 not only a structure that physically separates the upper ore crushing chamber 201 and the lower ore stratification chamber 202, but also participates in the optimization of the entire crushing process through its built-in annular permanent magnet 600.
[0058] Specifically, when a high voltage is applied to induce the electrohydraulic effect, the resulting plasma channel and shock wave, guided by the high-voltage electrode output terminal 403, form a vortex flow that crushes the ore. At this time, the magnetic field generated by the annular permanent magnet 600 within the sieve plate 300 interacts with the magnetic field of the annular permanent magnet array 409, jointly influencing the movement path of charged particles. This interaction not only enhances the concentration of charged particles in a specific area, improving the energy concentration and directionality of the shock wave, but also promotes the uniform distribution of ore particles within the crushing chamber, reducing particle size unevenness caused by localized over-crushing or under-crushing.
[0059] In one embodiment, a drain outlet 500 protrudes from the lower ore stratification cavity 202.
[0060] This invention also proposes a transverse electrohydraulic effect ore crushing method, comprising the following steps:
[0061] S1. Feed the ore into the crushing bin 100 through the feed inlet;
[0062] S2. Start the electrohydraulic effect generation system 400, apply high voltage through the high voltage electrode to polarize and break down water molecules to form a plasma channel and generate a shock wave.
[0063] S3. The shock wave propagates in the form of a spherical wave and forms a regular vortex flow under the guidance of the high-voltage electrode output terminal 403, which performs preliminary crushing of the ore.
[0064] S4. The initially crushed ore falls from the upper ore crushing chamber 201 into the lower ore stratification chamber 202 through the screen plate 300. At the same time, the ore in the lower ore stratification chamber continues to be crushed and mixed under the action of vortex flow.
[0065] S5. After being subjected to multiple shock waves, the ore that has reached the required crushing fineness and uniformity is discharged through the discharge port.
[0066] In one embodiment, step S2 further includes injecting an appropriate amount of water, which is deionized water, into the transverse crushing chamber through the water inlet.
[0067] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, apparatus, article, or transverse electrohydraulic effect crushing device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, apparatus, article, or transverse electrohydraulic effect crushing device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, apparatus, article, or transverse electrohydraulic effect crushing device that includes that element.
[0068] The above description is only a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural changes made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. A transverse electrohydraulic effect ore crushing device, comprising: A crushing bin (100) is provided, wherein a transverse crushing chamber (200) is provided in the crushing bin (100), and a screen plate (300) is provided in the transverse crushing chamber (200) to divide the transverse crushing chamber (200) into an upper ore crushing chamber (201) and a lower ore stratification chamber (202). A hydraulic-electric effect generating system (400) is provided in the transverse crushing chamber (200), and a water inlet (404) is provided on one side wall of the transverse crushing chamber (200). The system is characterized in that the electrohydraulic effect generating system (400) includes a high-voltage electrode and a ground electrode. The high-voltage electrode is arranged along the axis of the transverse crushing chamber (200) through a positioning part (402). The output end (403) of the high-voltage electrode is located inside the transverse crushing chamber (200). The side wall of the output end (403) of the high-voltage electrode is provided with a spiral structure. The protrusion of the spiral structure is sharply set. The output end of the ground electrode is connected to the side wall of the transverse crushing chamber (200). The input end (401) of the high-voltage electrode and the input end of the ground electrode are respectively connected to the two output ends of the high-voltage DC power supply. When the high-voltage DC power supply discharges, the protrusion of the spiral structure and the side wall of the transverse crushing chamber (200) break down the liquid medium between them and generate a shock wave.
2. The transverse electrohydraulic effect ore crushing device according to claim 1, characterized in that, The helix angle of the outer circumferential spiral structure of the high voltage electrode output terminal (403) is set to 30°-45°.
3. The transverse electrohydraulic effect ore crushing device according to claim 1, characterized in that, A first insulating ring (405) is provided circumferentially at the input end (401) of the high voltage electrode, and a second insulating ring (406) is provided circumferentially at the convex ring (407) in the middle of the output end (403) of the high voltage electrode.
4. The transverse electrohydraulic effect ore crushing device according to claim 3, characterized in that, The first insulating ring (405) is provided with a radially protruding limiting platform (408). One side of the limiting platform (408) is closely fitted with the top plate of the crushing bin (100) and extends axially to the outside of the through hole of the top plate of the crushing bin (100). The other side of the limiting platform (408) is provided with a radially concave outer curved surface, and the outer curved surface is embedded with an annular permanent magnet array (409). The magnetic field gradient direction is at an angle of 22.5° with the axis of the high voltage electrode input end (401).
5. A transverse electrohydraulic effect ore crushing device according to claim 4, characterized in that, The ring-shaped permanent magnet array (409) includes several permanent magnet units (410) arranged in a ring outside the core line of the high voltage electrode input end (401). The permanent magnet units (410) are arranged in a segmented fan-shaped Halbach array, and the magnetization direction of adjacent units rotates gradually from 45° to 90°, so that the magnetic field strength is superimposed and enhanced on the inner or outer side of the core line of the high voltage electrode input end (401), while it is significantly weakened on the other side.
6. A transverse electrohydraulic effect ore crushing device according to claim 5, characterized in that, A conductive buffer layer (411) is provided between every two adjacent permanent magnet units (410). The conductive buffer layer (411) is made of a silicone rubber composite material doped with carbon nanotubes, with a thickness of 0.5-1.2 mm and a resistivity controlled in the range of 10^3-10^5 Ω·m.
7. A transverse electrohydraulic effect ore crushing device according to claim 6, characterized in that, The sieve plate (300) is provided with an annular permanent magnet (600), and the magnetic field of the annular permanent magnet (600) cooperates with that of the annular permanent magnet array (409).
8. A transverse electrohydraulic effect ore crushing method, comprising the transverse electrohydraulic effect ore crushing device as described in any one of claims 1-7, characterized in that, It also includes the following steps: S1. Feed the ore into the crushing bin (100) through the feed inlet; S2. Start the electrohydraulic effect generation system (400), apply high voltage through the high voltage electrode input terminal (401) to polarize and break down water molecules to form a plasma channel and generate a shock wave; S3. The shock wave propagates in the form of a spherical wave and forms a regular vortex flow under the guidance of the high-voltage electrode output end (403), which performs preliminary crushing of the ore. S4. The initially crushed ore falls from the upper ore crushing chamber (201) through the screen plate (300) into the lower ore stratification chamber (202). At the same time, the ore in the lower ore stratification chamber continues to be crushed and mixed under the action of vortex flow. S5. After being subjected to multiple shock waves, the ore that has reached the required crushing fineness and uniformity is discharged through the discharge port.
9. A transverse electrohydraulic effect ore crushing method according to claim 8, characterized in that, Step S2 also includes injecting an appropriate amount of deionized water into the transverse crushing chamber through the water inlet.