Multi-field synergistic intelligent regulation and control titanium ore sorting device and sorting method

Abstract

The application relates to a multi-field synergistic intelligent regulation and control titanium ore sorting device and a sorting method. The device realizes efficient grading and sorting of titanium ore particles with different magnetism, electricity and density through the multi-field synergistic effect of integrated magnetic field, electric field and gravity field, in combination with an ultrasonic dispersion and intelligent parameter regulation and control system. The problems of low sorting precision of a single force field, agglomeration of fine particle materials and parameter regulation lag in the prior art are solved, so that the sorting efficiency and product purity are improved.

Description

Technical Field

[0001] This invention relates to the field of titanium ore sorting technology, specifically to a multi-field collaborative intelligent control titanium ore sorting device and sorting method. Background Technology

[0002] Among existing titanium ore separation technologies, wet magnetic separation technology relies on a single magnetic field, making it difficult to separate particles with different magnetic and electrical properties, and unable to process non-magnetic titanium ore particles with different electrical properties; dry air separation technology suffers from low precision and is susceptible to dust pollution; multi-stage screening can combine air and wet magnetic separation to achieve multi-stage screening, but lacks the ability to utilize particle electrical properties and control parameters in real time.

[0003] Therefore, there is an urgent need to develop a sorting device that integrates multiple fields and has intelligent control functions to solve the problems of poor adaptability to complex titanium ore and low sorting accuracy in the existing technology. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-field collaborative intelligent control titanium ore sorting device, which achieves efficient grading and sorting of titanium ore particles through the synergistic effect of magnetic field, electric field and gravitational field, combined with ultrasonic dispersion and intelligent parameter control, and correspondingly provides a sorting method based on this device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A multi-field collaborative intelligent control titanium ore sorting device includes: The raw material pretreatment unit includes a slurry mixing tank, an ultrasonic disperser, a particle size classifier, and a ball mill mechanism connected in sequence; the feed inlet of the ball mill mechanism is connected to the coarse material outlet of the particle size classifier, and the discharge outlet of the ball mill mechanism is connected to the slurry mixing tank through a return pipe. A multi-stage sorting unit is connected to the fine material outlet of the particle size classifier, and three sorting chambers are arranged sequentially along the slurry flow direction. Each sorting chamber is equipped with a magnetic field module, an electric field module, and a gravity sorting module. In addition, each sorting chamber is equipped with a slurry detection module. The product separation unit includes a concentrate outlet, a middlings outlet, and a tailings outlet, which are sequentially arranged corresponding to the three-stage separation chamber. The middlings outlet is connected to the slurry mixing tank through a circulation pipeline. The intelligent control system includes a processor and a magnetic field regulator and an electric field regulator electrically connected to the processor; the slurry detection module is electrically connected to the processor; the processor can control the magnetic field regulator and the electric field regulator to adjust the magnetic field strength and electric field voltage of each sorting chamber according to the slurry parameters fed back by the slurry detection modules of each sorting chamber based on a preset algorithm.

[0006] In some embodiments, the magnetic field module includes symmetrically arranged electromagnetic pole plates; the electric field module includes parallel high-voltage electrode plates; the gravity separation module includes inclined screen plates, with the screen plate apertures of the three separation chambers decreasing sequentially along the slurry flow direction; and the slurry detection module includes a separation chamber grade detector, a separation chamber concentration sensor, and a separation chamber particle size analyzer.

[0007] In some embodiments, the particle size classifier is a hydrocyclone; the underflow port of the hydrocyclone is the coarse material outlet and is designed based on the +200 mesh particle outlet; the overflow port of the hydrocyclone is the fine material outlet and is designed based on the -200 mesh particle outlet.

[0008] In some embodiments, the magnetic field strength output by the magnetic field module of the first-stage sorting chamber is 0.5-1.0T, the magnetic field strength output by the magnetic field module of the second-stage sorting chamber is 1.0-1.5T, and the magnetic field strength output by the magnetic field module of the third-stage sorting chamber is 1.5-2.0T, along the slurry flow direction; the voltage range output by the electric field module of the first-stage sorting chamber is 5-15kV, the voltage range output by the electric field module of the second-stage sorting chamber is 15-25kV, and the voltage range output by the electric field module of the third-stage sorting chamber is 25-30kV; the screen plate aperture of the first-stage sorting chamber is 200-250 mesh, the screen plate aperture of the second-stage sorting chamber is 250-300 mesh, and the screen plate aperture of the third-stage sorting chamber is 300-400 mesh.

[0009] In some embodiments, the preset algorithm of the intelligent control system includes the following magnetic field strength adjustment formula: in, This is the adjustment amount for the magnetic field strength; To account for the grade deviation in the sorting chamber, and , To achieve the target grade in the sorting chamber, The measured grade in the sorting chamber; For the concentration deviation in the sorting chamber, and , To achieve the target concentration in the sorting chamber, The concentration measured in the sorting chamber; The coefficient representing the influence of the sorting chamber grade deviation on the magnetic field strength adjustment. The coefficient representing the influence of the concentration deviation in the sorting cavity on the adjustment of the magnetic field strength. To eliminate the integral coefficient of steady-state error, To suppress the differential coefficients of overshoot, This represents the duration of the deviation.

[0010] In some embodiments, the preset algorithm of the intelligent control system further includes the following electric field voltage adjustment formula: in, This refers to the voltage regulation amount; To account for particle size deviation in the sorting cavity, and , The proportion of fine particles in the sorting chamber. The actual proportion of fine particles in the sorting chamber; The coefficient representing the influence of particle size deviation in the sorting chamber on voltage regulation. The coefficient representing the influence of the sorting chamber grade deviation on voltage regulation. This is the coefficient representing the influence of the concentration deviation in the sorting chamber on voltage regulation.

[0011] In some embodiments, the feed inlet of the ultrasonic disperser is equipped with a raw material concentration sensor and a raw material particle size analyzer. The processor further controls the output power of the ultrasonic disperser based on the measured raw material concentration and the measured proportion of fine particles, according to the following ultrasonic power adjustment formula: in, This refers to the ultrasonic power adjustment amount; Due to raw material concentration deviation, and , The target concentration of the raw materials, The concentration is the actual concentration of the raw material. This is due to the particle size deviation of the raw materials, and , The target fine particle percentage of the raw material. The actual measured proportion of fine particles in the raw material; This is the coefficient representing the influence of raw material concentration deviation on ultrasonic power adjustment.

[0012] In some embodiments, =0.02T / %, =0.01T / %, =0.005T / (% s), =0.1T s / %, =0.5kV / %, =0.2kV / %, =5W / %.

[0013] The present invention provides a sorting method for the aforementioned multi-field collaborative intelligent control titanium ore sorting device, comprising the following steps: S1. Raw material pretreatment: Add titanium ore raw material and water to the slurry mixing tank at a mass ratio of 1:3-1:5. After stirring evenly, send it to an ultrasonic disperser and ultrasonically treat it at a frequency of 20-40kHz for 3-5 minutes. Then, it enters the particle size classifier for classification. The slurry with a -200 mesh content of ≥80% enters the multi-stage sorting unit. The +200 mesh particles are sent to the ball mill for grinding and then returned to the slurry mixing tank. S2. Multi-level sorting: First-stage sorting: Under the action of a 0.5-1.0T magnetic field and a 5-15kV electric field, the first concentrate with a grade ≥55%, the first middlings with a grade of 20%-55%, and the first tailings with a grade ≤20% are obtained. Second-stage sorting: Under the action of a 1.0-1.5T magnetic field and a 15-25kV electric field, a second concentrate with a grade ≥50%, a second middlings with a grade of 15-50%, and a second tailings with a grade ≤15% are obtained; Third-stage sorting: Under the action of a 1.5-2.0T magnetic field and a 25-30kV electric field, the third concentrate with a grade ≥45%, the third middlings with a grade of 5-45%, and the third tailings with a grade ≤5% are obtained; S3. Product processing: The first concentrate, the second concentrate, and the third concentrate are combined into the final concentrate output; the first middlings, the second middlings, and the third middlings are returned to the slurry mixing tank for reprocessing via a circulation pipeline; the third tailings are output as the final tailings.

[0014] In some embodiments, in step S2, the processor collects the measured grade, measured concentration, and measured fine particle ratio of the sorting chamber in real time. When the grade deviation of the sorting chamber is ≥5% and the deviation duration is ≥3min, the processor automatically starts the middlings circulation and adjusts the magnetic field strength and electric field voltage of the corresponding sorting chamber based on the magnetic field strength adjustment formula and the electric field voltage adjustment formula until the grade deviation of the sorting chamber returns to the preset range of the target grade.

[0015] The beneficial effects of this invention include: (1) Multi-field synergy: Integrating magnetic field, electric field and gravitational field, multi-dimensional sorting is achieved by utilizing the magnetic, electrical and density differences of titanium ore particles, thus solving the problem of low sorting accuracy of single force field; (2) Intelligent control: Through real-time parameter monitoring and automatic adjustment, it adapts to the fluctuation of raw material composition and avoids the decline in sorting efficiency caused by the lag of manual adjustment; (3) High efficiency dispersion: Ultrasonic pretreatment effectively breaks up particle agglomeration, especially suitable for the sorting of fine-grained titanium ore (-200 mesh), and improves the uniformity of sorting; (4) Closed-loop circulation: The middlings circulation system reduces resource waste and the tailings grade can be reduced to below 5%, significantly improving resource utilization. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a block diagram illustrating the structural principle of the multi-field collaborative intelligent control titanium ore sorting device disclosed in the embodiment. Detailed Implementation

[0018] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0019] In the description of this application, it should be noted that the terms "upper", "lower", "front", "rear", "side", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0020] Unless otherwise expressly specified and limited, the terms "connection," "fixed," and "set" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0021] Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature, unless otherwise expressly specified.

[0022] Please see Figure 1 A multi-field collaborative intelligent control titanium ore sorting device, comprising: The raw material pretreatment unit 100 includes a slurry mixing tank 110, an ultrasonic disperser 120, a particle size classifier 130, and a ball milling mechanism 140 connected in sequence. The feed inlet of the ball milling mechanism 140 is connected to the coarse material outlet of the particle size classifier 130, and the discharge outlet of the ball milling mechanism 140 is connected to the slurry mixing tank 110 through a return pipe.

[0023] In this embodiment, the slurry mixing tank 110 is equipped with a double-helix mixing blade. During use, titanium ore raw materials and water can be added to the slurry mixing tank 110 according to a preset mass ratio, and the slurry can be stirred evenly by the double-helix mixing blade. In addition, a dry crushing mechanism can be added at the front end of the slurry mixing tank to dry crush the titanium ore.

[0024] The ultrasonic disperser 120 is used to break up particle agglomerations. The selectable frequency adjustment range is 20-40kHz, and the power can be selected from 1-3kW.

[0025] The particle size classifier 130 can be a hydrocyclone. The underflow outlet of this hydrocyclone is the coarse material outlet, designed based on a +200 mesh particle outlet. Theoretically, +200 mesh particles (coarse particles) can enter the ball mill through the coarse material outlet. The overflow outlet of this hydrocyclone is the fine material outlet, designed based on a -200 mesh particle outlet. Theoretically, only -200 mesh particles (fine particles) can be discharged from the fine material outlet. However, in practice, a slurry with a -200 mesh content ≥80% (i.e., the mass of -200 mesh particles (particle size ≤74μm) accounts for no less than 80% of the total mass of all solid particles in the slurry) obtained by the particle size classifier 130 is considered to meet the standard.

[0026] The ball milling mechanism 140 can be a horizontal ball mill, used to grind coarse particles into fine particles and then return them to the slurry mixing tank 110.

[0027] The multi-stage sorting unit 200 is connected to the fine material outlet of the particle size classifier 130, and three sorting chambers are arranged sequentially along the slurry flow direction. Each sorting chamber is equipped with a magnetic field module 210, an electric field module 220, and a gravity sorting module 230. In addition, each sorting chamber is equipped with a slurry detection module 240.

[0028] In this embodiment, the magnetic field module 210 includes electromagnetic pole plates symmetrically arranged vertically. Along the slurry flow direction, the magnetic field strength output by the first-stage sorting chamber magnetic field module 210 is 0.5-1.0T, specifically 0.8T, for collecting strongly magnetic particles; the magnetic field strength output by the second-stage sorting chamber magnetic field module 210 is 1.0-1.5T, specifically 1.2T, for collecting moderately magnetic particles; and the magnetic field strength output by the third-stage sorting chamber magnetic field module 210 is 1.5-2.0T, specifically 1.8T, for collecting weakly magnetic particles.

[0029] In this embodiment, the electric field module 220 includes parallel high-voltage electrode plates; according to the slurry flow direction, the voltage output range of the first-stage sorting chamber electric field module is 5-15kV, specifically 10kV, for collecting highly conductive particles; the voltage output range of the second-stage sorting chamber electric field module is 15-25kV, specifically 20kV, for collecting medium conductive particles; and the voltage output range of the third-stage sorting chamber electric field module is 25-30kV, specifically 28kV, for collecting low conductive particles.

[0030] In this embodiment, the gravity separation module includes an inclined screen plate with an inclination angle of 15°-25°. This angle allows the slurry to maintain an optimal flow rate, preventing stagnation and particle accumulation due to insufficient flow velocity, while also preventing insufficient interaction time between particles and the magnetic and electric fields due to excessive flow velocity, thus avoiding a decrease in separation accuracy. Simultaneously, the gravity component generated by this inclination angle assists in particle stratification based on density: high-density titanium ore particles (the target mineral) are more likely to adhere to the screen plate due to gravity and be adsorbed and intercepted by the magnetic or electric field; low-density gangue particles flow rapidly with the mainstream of the slurry, thereby maximizing the synergistic effect of "gravity + magnetic field + electric field" and improving concentrate recovery rate.

[0031] Along the direction of slurry flow, the screen apertures of the three-stage separation chambers decrease sequentially. The first-stage separation chamber has a screen aperture of 200-250 mesh, specifically 220 mesh, used to collect relatively coarse particles. The second-stage separation chamber has a screen aperture of 250-300 mesh, specifically 280 mesh, used to collect medium-sized particles. The third-stage separation chamber has a screen aperture of 300-400 mesh, specifically 350 mesh, used to collect relatively fine particles.

[0032] Therefore, the first-stage sorting chamber can separate coarse-grained concentrate with strong magnetic properties and high conductivity, the second-stage sorting chamber can separate concentrate with medium magnetic properties and medium conductivity, and the third-stage sorting chamber can separate fine-grained concentrate with weak magnetic properties and low conductivity.

[0033] In this embodiment, the slurry detection module 240 includes a sorting chamber grade detector, a sorting chamber concentration sensor, and a sorting chamber particle size analyzer, which are used to detect the grade, concentration, and fine particle ratio of the slurry in each sorting chamber, respectively.

[0034] The product separation unit 300 includes a concentrate outlet, a middlings outlet, and a tailings outlet, which are arranged sequentially with the three-stage separation chamber. The middlings outlet is connected to the slurry mixing tank 110 through a circulation pipeline.

[0035] The intelligent control system 400 includes a processor 410 and a magnetic field regulator 420 and an electric field regulator 430 electrically connected to the processor 410; a slurry detection module 240 is electrically connected to the processor 410; the processor 410 can control the magnetic field regulator 420 and the electric field regulator 430 to adjust the magnetic field strength and electric field voltage of each sorting cavity according to the slurry parameters fed back by the slurry detection module 240 of each sorting cavity, based on a preset algorithm. That is, the magnetic field regulator 420 adjusts the magnetic field strength of the corresponding sorting cavity through the magnetic field module 210 of each sorting cavity, and the electric field regulator 430 adjusts the electric field voltage of the corresponding sorting cavity through the electric field module 220 of each sorting cavity.

[0036] The magnetic field strength and electric field voltage of each sorting cavity are independently adjustable, and there is no interference between the sorting cavities.

[0037] In some embodiments, the preset algorithm of the intelligent control system includes the following magnetic field strength adjustment formula: in, This is the adjustment amount for the magnetic field strength; To account for the grade deviation in the sorting chamber, and , To achieve the target grade in the sorting chamber, The measured grade is fed back by the grade detector in the sorting chamber. For the concentration deviation in the sorting chamber, and , To achieve the target concentration in the sorting chamber, The measured concentration is fed back by the concentration sensor in the sorting chamber; The coefficient representing the influence of the sorting chamber grade deviation on the magnetic field strength adjustment. The coefficient representing the influence of the concentration deviation in the sorting cavity on the adjustment of the magnetic field strength. To eliminate the integral coefficient of steady-state error, To suppress the differential coefficients of overshoot, This represents the duration of the deviation.

[0038] Among them, the integral term Its core function is to accumulate historical deviations (grade deviations) and concentration deviation This is to eliminate steady-state errors in the system (such as long-standing small grade deviations).

[0039] In this embodiment, =0.02T / %, =0.01T / %, =0.005T / (% s), =0.1T s / %.

[0040] Assume the target parameters of the first-stage sorting cavity are: Target taste Target concentration Initial magnetic field strength .

[0041] The measured parameters of the first-stage sorting cavity are: Actual grade That is, quality deviation ; Measured concentration Concentration deviation The deviation lasts for a relatively short time. ), and the deviation is stable (without drastic fluctuations, so the differential term is 0).

[0042] The magnetic field strength adjustment amount should be: After adjustment, the magnetic field strength should increase from 0.8T to 0.9T, that is... (The magnetic field strength in the first-stage sorting chamber is still within the range of 0.5-1.0T, which meets the equipment design limitations; if the calculated adjusted magnetic field strength exceeds this range, due to equipment limitations, it can only reach the equipment's limit value in practice).

[0043] In some embodiments, the preset algorithm of the intelligent control system further includes the following electric field voltage adjustment formula: in, This refers to the voltage regulation amount; To account for particle size deviation in the sorting cavity, and , The proportion of fine particles in the sorting chamber. The measured percentage of fine particles is fed back by the particle size analyzer in the sorting chamber. The coefficient representing the influence of particle size deviation in the sorting chamber on voltage regulation. The coefficient representing the influence of the sorting chamber grade deviation on voltage regulation. This is the coefficient representing the influence of the concentration deviation in the sorting chamber on voltage regulation.

[0044] In this embodiment, =0.5kV / %, =0.3kV / %, =0.2kV / %.

[0045] In some embodiments, the feed inlet of the ultrasonic disperser 120 is equipped with a raw material concentration sensor and a raw material particle size analyzer. The processor 410 also controls the ultrasonic disperser to adjust its output power based on the measured raw material concentration and the measured proportion of fine particles, according to the following ultrasonic power adjustment formula: in, This refers to the ultrasonic power adjustment amount; Due to raw material concentration deviation, and , The target concentration of the raw materials, The measured concentration is fed back by the raw material concentration sensor; This is due to the particle size deviation of the raw materials, and , The target fine particle percentage of the raw material. The measured percentage of fine particles is fed back by the raw material particle size analyzer. This is the influence coefficient of raw material concentration deviation on ultrasonic power adjustment. In this embodiment, .

[0046] In this embodiment, due to the deviation in raw material concentration... The main factor affecting particle agglomeration is the concentration; the higher the concentration, the more severe the agglomeration, requiring stronger ultrasonic breaking to break up the agglomerates. Raw material particle size deviation is also a factor. This is a secondary correction factor; the lower the proportion of fine particles, the slightly higher the risk of aggregation, requiring a slight increase in power. In the above ultrasonic power adjustment formula... Direct deviation from raw material concentration Multiplying them, and with a value (e.g., 5 W / %) much larger than the coefficient of the particle size correction term (0.02), means (concentration is the core, particle size is the correction): therefore, Defined as the influence coefficient of raw material concentration deviation on ultrasonic power adjustment.

[0047] Furthermore, this embodiment provides a sorting method based on the aforementioned multi-field collaborative intelligent control titanium ore sorting device, comprising the following steps: S100. Raw material pretreatment: Add titanium ore raw material and water to the slurry mixing tank at a mass ratio of 1:3-1:5. After stirring evenly, send it to an ultrasonic disperser and ultrasonically treat it at a frequency of 20-40kHz for 3-5 minutes. Then, it enters the particle size classifier for classification. The slurry with a -200 mesh content of ≥80% enters the multi-stage sorting unit. The +200 mesh particles are sent to the ball mill for grinding and then returned to the slurry mixing tank.

[0048] Specifically, in step S100, titanium ore raw material (raw ore grade 15-25%, after dry crushing to -10mm) and water are added to the slurry mixing tank 110 at a mass ratio of 1:4. After being stirred evenly, the mixture is sent to the ultrasonic disperser 120. The ultrasonic disperser 120 processes the mixture at a frequency of 25kHz and a power of 2kW for 4 minutes to break up particle agglomeration. The mixture then enters the particle size classifier 130 for classification. The slurry with a -200 mesh content of ≥80% enters the multi-stage sorting unit 200. The +200 mesh particles are sent to the ball mill 140 for grinding and then returned to the slurry mixing tank 110.

[0049] The reason for setting "-200 mesh percentage ≥ 80%" here is: (1) Magnetic field response: Fine-grained titanium ore (≤74μm, -200 mesh) interacts more fully with the magnetic field, and weakly magnetic ilmenite particles can be more uniformly adsorbed by the magnetic field; if the proportion of coarse particles (>74μm) is too high, they are prone to settle too quickly in the magnetic field due to excessive gravity, resulting in insufficient capture of magnetic particles.

[0050] (2) Electric field separation: The difference in conductivity between titanium ore and gangue is more significant in fine particles (coarse particles may encapsulate impurities and mask the difference in electrical properties). -200 mesh particles are more easily separated accurately due to the difference in electrical properties in a high voltage electric field.

[0051] (3) Gravity classification: The sieve plate aperture of the subsequent gravity sorting module is 200-400 mesh. -200 mesh particles can better match the sieve plate aperture, avoiding coarse particles clogging the sieve plate or excessive loss of fine particles.

[0052] S200. Multi-stage sorting: S110. First-stage separation: Under the action of a 0.5-1.0T magnetic field and a 5-15kV electric field, the first concentrate with a grade ≥55%, the first middlings with a grade of 20%-55%, and the first tailings with a grade ≤20% are obtained.

[0053] Specifically, the initial magnetic field strength of the first-stage separation is 0.8T, the initial electric field voltage is 10kV, the sieve aperture is 220 mesh, and the resulting concentrate grade is 58%, middlings grade is 35%, and tailings grade is 10%.

[0054] S120. Second-stage separation: Under the action of a 1.0-1.5T magnetic field and a 15-25kV electric field, a second concentrate with a grade ≥50%, a second middlings with a grade of 15-50%, and a second tailings with a grade ≤15% are obtained.

[0055] Specifically, the initial magnetic field strength of the second-stage separation is 1.2T, the initial electric field voltage is 20kV, the sieve aperture is 280 mesh, and the resulting concentrate grade is 52%, middlings grade is 28%, and tailings grade is 7%.

[0056] S130. Third-stage separation: Under the action of a 1.5-2.0T magnetic field and a 25-30kV electric field, a third concentrate with a grade ≥45%, a third middlings with a grade of 5-45%, and a third tailings with a grade ≤5% are obtained.

[0057] Specifically, the initial magnetic field strength of the third-stage separation is 1.8T, the initial electric field voltage is 28kV, the sieve aperture is 350 mesh, and the concentrate grade is 47%, the middlings grade is 22%, and the tailings grade is 4%.

[0058] S300. Product processing: The first concentrate, the second concentrate, and the third concentrate are combined into the final concentrate output; the first middlings, the second middlings, and the third middlings are returned to the slurry mixing tank for reprocessing via a circulation pipeline; the third tailings are output as the final tailings.

[0059] In some embodiments, in step S200, the processor 410 collects in real time the measured grade fed back by the grade detector in the sorting chamber, the measured concentration fed back by the concentration sensor in the sorting chamber, and the measured fine particle ratio fed back by the particle size analyzer in the sorting chamber. When the grade deviation in the sorting chamber is ≥5% and the deviation duration is ≥3min, the processor automatically starts the middlings circulation and adjusts the magnetic field strength and electric field voltage of the corresponding sorting chamber based on the magnetic field strength adjustment formula and the electric field voltage adjustment formula until the grade deviation in the sorting chamber returns to the preset range of the target grade (e.g., the target grade). ).

[0060] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-field collaborative intelligent control titanium ore sorting device, characterized in that, include: The raw material pretreatment unit includes a slurry mixing tank, an ultrasonic disperser, a particle size classifier, and a ball mill mechanism connected in sequence; the feed inlet of the ball mill mechanism is connected to the coarse material outlet of the particle size classifier, and the discharge outlet of the ball mill mechanism is connected to the slurry mixing tank through a return pipe. A multi-stage sorting unit is connected to the fine material outlet of the particle size classifier, and three sorting chambers are arranged sequentially along the slurry flow direction. Each sorting chamber is equipped with a magnetic field module, an electric field module, and a gravity sorting module. In addition, each sorting chamber is equipped with a slurry detection module. The product separation unit includes a concentrate outlet, a middlings outlet, and a tailings outlet, which are sequentially arranged corresponding to the three-stage separation chamber. The middlings outlet is connected to the slurry mixing tank through a circulation pipeline. The intelligent control system includes a processor and a magnetic field regulator and an electric field regulator electrically connected to the processor; the slurry detection module is electrically connected to the processor. The processor can control the magnetic field regulator and electric field regulator to adjust the magnetic field strength and electric field voltage of each sorting chamber according to the slurry parameters fed back by the slurry detection module of each sorting chamber and based on a preset algorithm.

2. The multi-field collaborative intelligent control titanium ore sorting device according to claim 1, characterized in that, The magnetic field module includes symmetrically arranged electromagnetic pole plates; the electric field module includes parallel high-voltage electrode plates; the gravity separation module includes inclined screen plates, with the screen plate apertures of the three separation chambers decreasing sequentially along the slurry flow direction; the slurry detection module includes a separation chamber grade detector, a separation chamber concentration sensor, and a separation chamber particle size analyzer.

3. The multi-field collaborative intelligent control titanium ore sorting device according to claim 1, characterized in that, The particle size classifier is a hydrocyclone; the underflow port of the hydrocyclone is the coarse material outlet and is designed based on the +200 mesh particle outlet; the overflow port of the hydrocyclone is the fine material outlet and is designed based on the -200 mesh particle outlet.

4. The multi-field collaborative intelligent control titanium ore sorting device according to claim 2, characterized in that, Along the slurry flow direction, the magnetic field strength output by the first-stage separation chamber magnetic field module is 0.5-1.0T, the second-stage separation chamber magnetic field module is 1.0-1.5T, and the third-stage separation chamber magnetic field module is 1.5-2.0T; the voltage range output by the first-stage separation chamber electric field module is 5-15kV, the second-stage separation chamber electric field module is 15-25kV, and the third-stage separation chamber electric field module is 25-30kV; the screen plate aperture of the first-stage separation chamber is 200-250 mesh, the second-stage separation chamber screen plate aperture is 250-300 mesh, and the third-stage separation chamber screen plate aperture is 300-400 mesh.

5. The multi-field collaborative intelligent control titanium ore sorting device according to claim 4, characterized in that, The preset algorithm of the intelligent control system includes the following magnetic field strength adjustment formula: in, This is the adjustment amount for the magnetic field strength; To account for the grade deviation in the sorting chamber, and , To achieve the target grade in the sorting chamber, The actual grade of the sorting chamber; For the concentration deviation in the sorting chamber, and , To achieve the target concentration in the sorting chamber, The concentration measured in the sorting chamber; The coefficient representing the influence of the sorting chamber grade deviation on the magnetic field strength adjustment. The coefficient representing the influence of the concentration deviation in the sorting cavity on the adjustment of the magnetic field strength. To eliminate the integral coefficient of steady-state error, To suppress the differential coefficients of overshoot, This represents the duration of the deviation.

6. The multi-field collaborative intelligent control titanium ore sorting device according to claim 5, characterized in that, The preset algorithm of the intelligent control system also includes the following electric field voltage adjustment formula: in, This refers to the voltage regulation amount; To account for particle size deviation in the sorting cavity, and , The proportion of fine particles in the sorting chamber. The actual proportion of fine particles in the sorting chamber; The coefficient representing the influence of particle size deviation in the sorting chamber on voltage regulation. The coefficient representing the influence of the sorting chamber grade deviation on voltage regulation. This is the coefficient representing the influence of the concentration deviation in the sorting chamber on voltage regulation.

7. The multi-field collaborative intelligent control titanium ore sorting device according to claim 6, characterized in that, The ultrasonic disperser is equipped with a raw material concentration sensor and a raw material particle size analyzer at its feed inlet. The processor also controls the output power of the ultrasonic disperser based on the measured raw material concentration and the measured proportion of fine particles, according to the following ultrasonic power adjustment formula: in, This refers to the ultrasonic power adjustment amount; Due to raw material concentration deviation, and , The target concentration of the raw materials, The concentration is the actual concentration of the raw material. This is due to the particle size deviation of the raw materials, and , The target fine particle percentage of the raw material. The actual measured proportion of fine particles in the raw material; This is the coefficient representing the influence of raw material concentration deviation on ultrasonic power adjustment.

8. The multi-field collaborative intelligent control titanium ore sorting device according to claim 7, characterized in that, =0.02T / %, =0.01T / %, =0.005T / (% s), =0.1T s / %, =0.5kV / %, =0.3kV / %, =0.2kV / %, =5W / %。 9. A sorting method based on the multi-field collaborative intelligent control titanium ore sorting device as described in claim 7 or 8, characterized in that, Includes the following steps: S1. Raw material pretreatment: Add titanium ore raw material and water to the slurry mixing tank at a mass ratio of 1:3-1:

5. After stirring evenly, send it to an ultrasonic disperser and ultrasonically treat it at a frequency of 20-40kHz for 3-5 minutes. Then, it enters the particle size classifier for classification. The slurry with a -200 mesh content of ≥80% enters the multi-stage sorting unit. The +200 mesh particles are sent to the ball mill for grinding and then returned to the slurry mixing tank. S2. Multi-level sorting: First-stage sorting: Under the action of a 0.5-1.0T magnetic field and a 5-15kV electric field, the first concentrate with a grade ≥55%, the first middlings with a grade of 20%-55%, and the first tailings with a grade ≤20% are obtained. Second-stage sorting: Under the action of a 1.0-1.5T magnetic field and a 15-25kV electric field, a second concentrate with a grade ≥50%, a second middlings with a grade of 15-50%, and a second tailings with a grade ≤15% are obtained; Third-stage sorting: Under the action of a 1.5-2.0T magnetic field and a 25-30kV electric field, the third concentrate with a grade ≥45%, the third middlings with a grade of 5-45%, and the third tailings with a grade ≤5% are obtained; S3. Product processing: The first concentrate, the second concentrate, and the third concentrate are combined into the final concentrate output; the first middlings, the second middlings, and the third middlings are returned to the slurry mixing tank for reprocessing via a circulation pipeline; the third tailings are output as the final tailings.

10. The sorting method according to claim 9, characterized in that, In step S2, the processor collects the measured grade, measured concentration, and measured fine particle ratio of the sorting chamber in real time. When the grade deviation of the sorting chamber is ≥5% and the deviation duration is ≥3min, the processor automatically starts the middlings circulation and adjusts the magnetic field strength and electric field voltage of the corresponding sorting chamber based on the magnetic field strength adjustment formula and electric field voltage adjustment formula until the grade deviation of the sorting chamber returns to the preset range of the target grade.

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