Ore dressing device suitable for spodumene

Abstract

The ore dressing device comprises a conveying mechanism, a material guiding mechanism is arranged at the input end of the conveying mechanism, and an executing mechanism is arranged at the output end of the conveying mechanism; the fluorescent mechanism is mounted above the conveying mechanism; the fluorescent mechanism comprises an ultraviolet module, a lens module and an image acquisition module, the lens module is located between the image acquisition module and the conveying mechanism, and emergent light generated when ultraviolet rays emitted by the ultraviolet module irradiate the ore is combed into parallel light through the lens module and then enters the image acquisition module. The lens module is additionally arranged in the fluorescent mechanism, the lens module is used for converting the emergent light in the scattered light state into the parallel light, the emergent light emitted from the lens module is made to enter the image collecting module in the parallel light state, and the brightness of the emergent light can be effectively improved due to the fact that the scattered light is converted into the parallel light; therefore, the image acquisition module can obtain emergent light information meeting post-processing and analysis requirements, and the accuracy of identifying ore types is improved.

Description

Technical Field

[0001] The invention mainly relates to the technical field of ore separation, and in particular to a ore separation device suitable for spodumene. Background Art

[0002] Spodumene belongs to the monoclinic system, and its crystals are often columnar, granular or plate-shaped. Its colors are grayish white, grayish green, purple or yellow, etc. Its hardness is 6.5-7, its density is 3.03-3.22g / cm³, and it can emit fluorescence under ultraviolet light. As an extremely critical mineral resource, spodumene is irreplaceable in modern industry. As the main source of lithium, spodumene not only supports the world's rapidly developing new energy industries, such as electric vehicles and renewable energy storage technology, but also plays an important role in traditional industrial fields such as ceramics and glass. Its unique physical and chemical properties make spodumene a key factor in improving the durability and stability of ceramic products and optimizing the performance of glass.

[0003] Ore dressing is an important link in the production process of mineral products. It refers to the process of separating useful minerals from useless or harmful minerals in mineral raw materials by physical or chemical methods, or separating multiple useful minerals. Some ore dressing equipment uses the color, texture and density of the ore surface as feature points, and combines visible light reflection and X-ray penetration for identification, so as to distinguish the types of ore. However, when the color, texture and density characteristics of different ores are similar or close, the existing ore dressing equipment will not be able to accurately and efficiently distinguish the types of ore, thus making it difficult to meet production requirements. Based on the above defects, people try to use the characteristics of fluorescence reaction of specific minerals (referring to the phenomenon that when a certain room temperature substance is irradiated with incident light of a certain wavelength, it enters an excited state after absorbing light energy, and immediately de-excites and emits an outgoing light with a longer wavelength than the incident light) for ore dressing, that is, the mineral to be separated is exposed to ultraviolet rays, and then the fluorescence generated by the mineral is collected. By analyzing the collected fluorescence information, the type of ore can be distinguished.

[0004] Although the use of ultraviolet fluorescence reaction for mineral processing has theoretical support, the effect of existing ultraviolet fluorescence reaction mineral processing equipment in actual application is not satisfactory. Although the existing mineral processing equipment can cause the ore to produce fluorescence, the fluorescence light emitted by the ore through the ultraviolet fluorescence reaction is too weak, and the ore is in a high-speed moving state, so it is difficult for the camera to obtain images that meet the requirements of post-processing analysis, resulting in the ore recognition accuracy failing to meet the expected indicators. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a mineral processing device suitable for spodumene.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: A mineral processing device suitable for spodumene comprises a belt-type conveyor mechanism for transporting ore, wherein the input end of the conveyor mechanism is provided with a material guide mechanism for conveying the ore onto the conveyor mechanism, and the output end thereof is provided with an actuator for separating different types of ores; the mineral processing device also comprises a fluorescent mechanism installed above the conveyor mechanism for irradiating ultraviolet rays to the ore and obtaining information of the emitted light emitted by the ore; the fluorescent mechanism comprises an ultraviolet module, a lens module and an image acquisition module, wherein the lens module is located between the image acquisition module and the conveyor mechanism, and the emitted light generated by the ultraviolet rays emitted by the ultraviolet module irradiating the ore is combed into parallel light by the lens module and then enters the image acquisition module.

[0007] As a further improvement of the above technical solution: There are two groups of ultraviolet modules, which are arranged at intervals along the conveying direction of the conveying mechanism; one group of ultraviolet modules located on the front side of the conveying direction irradiates ultraviolet rays toward the rear side of the conveying direction, and the other group of ultraviolet modules located on the rear side of the conveying direction irradiates ultraviolet rays toward the front side of the conveying direction. The ultraviolet rays irradiated by the two groups of ultraviolet modules overlap on the upper surface of the belt in the conveying mechanism.

[0008] The ultraviolet module includes at least two light sources, and the light sources of the two ultraviolet modules are arranged in an arch shape.

[0009] The light source is configured as a line scanning light source, and the ultraviolet rays irradiated by the light source span across the upper surface of the belt in the conveying mechanism.

[0010] The light source is 60-120 mm away from the belt of the conveying mechanism.

[0011] When the light source is set as an LED light source, the power is 1000-3000W; when the light source is set as a laser light source, the power is 50-200W.

[0012] The light source is configured as a wavelength-adjustable narrow-band light source, the wavelength adjustment range of which is 200nm-400nm, and the bandwidth is less than or equal to 3nm.

[0013] The ore dressing device also includes a casing for shielding external visible light, and the casing covers the conveying mechanism and the fluorescent mechanism; the casing is formed with an inlet for ore to enter at the input end of the conveying mechanism, and is formed with an outlet for ore to be discharged at the output end of the conveying mechanism.

[0014] The ore dressing device also includes a shading plate arranged inside the casing and between the fluorescent mechanism and the feed inlet for blocking visible light entering from the feed inlet, and the bottom edge of the shading plate is 60-120 mm above the belt height of the conveying mechanism.

[0015] The ore dressing device also includes a darkroom arranged inside the casing and covering the fluorescent mechanism. The bottom end of the darkroom is open, and the bottom edge of the darkroom is 60-120mm away from the belt height of the conveying mechanism.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present application adds a lens module in the fluorescent mechanism, and uses the lens module to convert the emitted light in a scattered light state into parallel light, so that the emitted light emitted from the lens module enters the image acquisition module in a parallel light state. Since the conversion of scattered light into parallel light can effectively improve the brightness of the emitted light, the image acquisition module can obtain the emitted light information that meets the requirements of post-processing analysis, thereby improving the accuracy of identifying the type of ore. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the mineral processing device; Figure 2 is a schematic cross-sectional view of a mineral processing device (the material guiding mechanism is not shown); Figure 3 yes Figure 2 A local enlarged schematic diagram of the middle A; Figure 4 It is a schematic diagram of the transformation principle of the emitted light.

[0018] The numbers in the figure represent: 1. Conveying mechanism; 11. Belt; 12. Roller; 2. Material guiding mechanism; 3. Actuator; 31. Material distributing nozzle; 32. Discharging bin; 321. Dropping bin; 322. Material distributing bin; 323. Material guiding plate; 4. Fluorescent mechanism; 41. UV module; 411. Light source; 42. Lens module; 43. Image acquisition module; 5. Casing; 51. Material inlet; 52. Material outlet; 6. Shading plate; 7. Darkroom. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1 like Figures 1 to 3As shown, the ore dressing device for spodumene of this embodiment comprises a belt-type conveyor mechanism 1 for transporting ore, the conveyor mechanism 1 comprises at least two rollers 12 arranged at intervals, a belt 11 is mounted on the rollers 12, at least one of the rollers 12 is connected to a driver, and the rollers 12 rotate under the drive of the driver, thereby driving the belt 11 to rotate. A material guide mechanism 2 for feeding ore to the conveyor mechanism 1 is provided at the input end of the conveyor mechanism 1, the material guide mechanism 2 is a feeder, and a slide plate is provided at the output end thereof, the bottom end of the slide plate is close to the upper surface of the belt 11, and the ore output from the material guide mechanism 2 slides along the slide plate to the upper surface of the belt 11 and moves with the belt 11. An actuator 3 for separating different types of ores is provided at the output end of the conveyor mechanism 1, the actuator 3 comprises a material distribution nozzle 31 located at the output end of the conveyor mechanism 1, the gas ejected by the actuator 3 can act on the ore just leaving the belt 11, and the jetting direction thereof is substantially perpendicular to the tangent of the horizontal projection motion trajectory of the ore. The actuator 3 also includes a discharge bin 32 arranged at the lower side of the output end of the conveying mechanism 1, and the discharge bin 32 includes a drop bin 321 and a distribution bin 322 arranged in sequence, and a guide plate 323 arranged therebetween; the drop bin 321 is close to the conveying mechanism 1, and the distribution bin 322 is located on the side of the drop bin 321 away from the conveying mechanism 1. The ore that is not hit by the gas ejected from the distribution nozzle 31 generates a horizontal motion trajectory, while the ore that is hit by the gas ejected from the distribution nozzle 31 forms an arc motion trajectory, and the guide plate 323 is located between the horizontal motion trajectory and the arc motion trajectory, and the ore that is not hit by the gas ejected from the distribution nozzle 31 eventually enters the drop bin 321, while the ore that is hit by the gas ejected from the distribution nozzle 31 eventually enters the distribution bin 322. The ore dressing device also includes a fluorescent mechanism 4 installed above the conveying mechanism 1, which is used to irradiate ultraviolet rays to the ore and obtain the information of the outgoing light emitted by the ore; the fluorescent mechanism 4 includes an ultraviolet module 41, a lens module 42 and an image acquisition module 43, and the lens module 42 is located between the image acquisition module 43 and the conveying mechanism 1. The ultraviolet rays emitted by the ultraviolet module 41 are irradiated on the ore, and the outgoing light generated is combed into parallel light by the lens module 42 and enters the image acquisition module 43. The ultraviolet module 41 irradiates ultraviolet rays to the ore on the belt 11. Under the stimulation of ultraviolet rays, spodumene enters an excited state, and immediately de-excites and emits outgoing light with a longer wavelength than the incident light. The outgoing light is visible light, but because the outgoing light is scattered light and the light is too weak, it is difficult to be directly captured by the image acquisition module 43. The present application adds a lens module 42 (formed by a combination of several lenses) in the fluorescent mechanism 4, and uses the lens module 42 to convert the emitted light in a scattered light state into parallel light, and converge it into a parallel light beam with a width of no more than 5 mm, so that the emitted light emitted from the lens module 42 can be more concentrated and enter the image acquisition module 43 (such as Figure 4As shown). Since the scattered light is gathered and converted into parallel light, the brightness of the emitted light can be effectively improved, so that the image acquisition module 43 can obtain the emitted light information that meets the requirements of post-processing analysis, thereby improving the accuracy of identifying the type of ore.

[0021] In this embodiment, there are two groups of ultraviolet modules 41, which are arranged at intervals along the conveying direction of the conveying mechanism 1; a group of ultraviolet modules 41 located on the front side of the conveying direction irradiates ultraviolet rays toward the rear side of the conveying direction, and a group of ultraviolet modules 41 located on the rear side of the conveying direction irradiates ultraviolet rays toward the front side of the conveying direction, and the ultraviolet rays irradiated by the two groups of ultraviolet modules 41 overlap on the upper surface of the belt 11 in the conveying mechanism 1. When the ore moves with the belt 11 to the overlapping area of ​​the ultraviolet rays, the ultraviolet rays will irradiate the ore from the front and rear sides at the same time, so that the light receiving area of ​​the ore is as large as possible, thereby stimulating the generation of more outgoing light. Specifically, the ultraviolet module 41 includes two light sources 411, and the four light sources 411 of the two ultraviolet modules 41 are arranged in an arch shape, and the overlapping area of ​​the ultraviolet rays is located in the arch. In addition, a gap is formed between the two ultraviolet modules 41 for the outgoing light to pass to the lens module 42 to avoid obstruction to the optical path of the outgoing light. Providing two groups of UV modules 41 is one of the preferred schemes. Of course, in other embodiments, one or more groups of UV modules 41 can also be provided according to actual needs; for example, when only one group of UV modules 41 is provided, it irradiates the ore from directly above; and when multiple groups (for example, three groups) of UV modules 41 are provided, two groups of UV modules 41 are spaced apart along the conveying direction of the conveying mechanism 1, one group of UV modules 41 located on the front side of the conveying direction irradiates UV rays toward the rear side of the conveying direction, one group of UV modules 41 located on the rear side of the conveying direction irradiates UV rays toward the front side of the conveying direction, and the other group of UV modules 41 irradiates the ore from directly above, and the ultraviolet rays irradiated by the three groups of UV modules 41 overlap on the upper surface of the belt 11 in the conveying mechanism 1.

[0022] In the present embodiment, the light source 411 is configured as a line scanning light source, and the ultraviolet rays irradiated by the light source 411 span the upper surface of the belt 11 in the conveying mechanism 1. The image captured by the sensor in the image acquisition module 43 is linear, that is, the image acquisition module 43 is configured as a line scanning camera, and the light source 411 is configured as a line scanning light source to match it. In addition, the line scanning light source has high brightness, and because of its focusing design through a special lens, the line scanning light source can suppress light diffusion and reduce light loss, thereby ensuring the uniformity of the light source. In the present embodiment, the length direction of the light source 411 is parallel to the belt 11 and perpendicular to the moving direction of the belt 11, and the end of the light source 411 is flush with or slightly beyond the edge of the belt 11, so that the ore located at any position on the upper surface of the belt 11 can be illuminated by the light source 411.

[0023] In this embodiment, the light source 411 is 100mm high from the belt 11 of the conveying mechanism 1; the light source 411 is set as an LED light source, and its power is 2000W. The ultraviolet light emitted by the light source 411 has a short wavelength, and its intensity decreases significantly as the irradiation distance increases. The diameter of the ore entering the mineral processing device is generally slightly less than 60mm. In order to get as close to the ore as possible, the light source 411 is set at a height of 100mm from the belt 11, which can not only allow the ore to pass smoothly, but also effectively reduce the attenuation of the light intensity of the ultraviolet light. In addition, in order to obtain the output light information that meets the requirements of post-processing analysis, the light source 411 is set as an LED light source in this embodiment, and its power is set to 2000W. In other embodiments, the light source 411 can also be set as a laser light source, and its power is set to 50-200W.

[0024] In this embodiment, the wavelength of the light source 411 is 300nm, and the bandwidth is equal to 3nm. The wider the bandwidth, the more visible light is generated, and the visible light reflected by the ore surface or the belt 11 surface will enter the image acquisition module 43, thereby interfering with the acquisition of the outgoing light information. By setting the wavelength of the light source 411 to 300nm and the bandwidth equal to 3nm, the generation of visible light can be effectively reduced, thereby ensuring the purity of the light source 411, and then reducing the interference with the acquisition of the outgoing light information by the image acquisition module 43.

[0025] Furthermore, in order to reduce the interference of external visible light, the mineral processing device is also provided with a housing 5, which is fixed on the frame and covers the conveying mechanism 1 and the fluorescent mechanism 4. The housing 5 is only provided with an inlet 51 for ore to enter at the input end of the conveying mechanism 1, and an outlet 52 for ore to be discharged at the output end of the conveying mechanism 1, and the rest of the housing is sealed to effectively block external light. At the same time, in order to further reduce the visible light entering from the inlet 51, a shading plate 6 is also provided inside the housing 5, between the fluorescent mechanism 4 and the inlet 51, and the bottom edge of the shading plate 6 is 100 mm high from the belt 11 of the conveying mechanism 1, so as to avoid collision with the ore and allow as little light as possible to enter the area where the fluorescent mechanism 4 is located from the gap. Moreover, inside the housing 5, between the fluorescent mechanism 4 and the feed port 51, a darkroom 7 covering the fluorescent mechanism 4 is provided, and the bottom end of the darkroom 7 is open, so that the ultraviolet rays generated by the ultraviolet module 41 can be directed toward the ore, and the outgoing light emitted by the ore can be directed toward the lens module 42 and enter the image acquisition module 43. Furthermore, the bottom edge of the darkroom 7 is 100 mm high from the belt 11 of the conveying mechanism 1, so that collision with the ore can be avoided and as little light as possible can be directed into the area where the fluorescent mechanism 4 is located from the gap.

[0026] When the ore is screened using the spodumene beneficiation device provided in this embodiment, the ore is fed into the belt 11 by the material guide mechanism 2 and moves with the rotation of the belt 11. The ore on the belt 11 first passes through the gap between the light shielding plate 6 and the belt 11 and enters the darkroom 6. In the darkroom 6, the fluorescent mechanism 4 excites the fluorescence of the spodumene and collects images. The collected images are processed by the external host and the actuator 3 is controlled to separate the ore (i.e., spodumene) thrown from the end of the belt 11 and excited to fluoresce from the ore that is not excited to fluoresce, thereby realizing the ore dressing function. The control method of the fluorescent mechanism 4, the external host and the actuator is consistent with the control method of the prior art for ore dressing using visible light reflection and / or X-ray penetration, which is the prior art and will not be described in detail here.

[0027] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A spodumene beneficiation device, comprising a belt conveyor mechanism (1) for transporting ore, wherein the input end of the conveyor mechanism (1) is provided with a material guide mechanism (2) for conveying the ore onto the conveyor mechanism (1), and the output end thereof is provided with an actuator (3) for separating different types of ores, characterized in that: The ore dressing device further comprises a fluorescent mechanism (4) installed above the conveying mechanism (1) and used for irradiating ultraviolet rays to the ore and obtaining information about the outgoing light emitted by the ore; the fluorescent mechanism (4) comprises an ultraviolet module (41), a lens module (42) and an image acquisition module (43); the lens module (42) is located between the image acquisition module (43) and the conveying mechanism (1); the outgoing light generated by the ultraviolet rays emitted by the ultraviolet module (41) irradiating the ore is combed into parallel light by the lens module (42) and then enters the image acquisition module (43).

2. The ore dressing device according to claim 1, characterized in that: There are two groups of ultraviolet modules (41), which are arranged at intervals along the conveying direction of the conveying mechanism (1); one group of ultraviolet modules (41) located at the front side of the conveying direction irradiates ultraviolet rays toward the rear side of the conveying direction, and one group of ultraviolet modules (41) located at the rear side of the conveying direction irradiates ultraviolet rays toward the front side of the conveying direction. The ultraviolet rays irradiated by the two groups of ultraviolet modules (41) overlap on the upper surface of the belt (11) in the conveying mechanism (1).

3. The ore dressing device according to claim 2, characterized in that: The ultraviolet module (41) comprises at least two light sources (411), and the light sources (411) of the two ultraviolet modules (41) are arranged in an arch shape.

4. The ore dressing device according to claim 3, characterized in that: The light source (411) is configured as a line scanning light source, and the ultraviolet rays irradiated by the light source (411) span the upper surface of the belt (11) in the conveying mechanism (1).

5. The ore dressing device according to claim 3, characterized in that: The light source (411) is at a height of 60-120 mm from the belt (11) of the conveying mechanism (1).

6. The ore dressing device according to claim 3, characterized in that: When the light source (411) is set as an LED light source, the power is 1000-3000W; when the light source (411) is set as a laser light source, the power is 50-200W.

7. The ore dressing device according to claim 3, characterized in that: The light source (411) is configured as a wavelength-adjustable narrow-band light source, the wavelength adjustment range of which is 200nm-400nm, and the bandwidth is less than or equal to 3nm.

8. The ore dressing device according to claim 1, characterized in that: The ore dressing device further comprises a casing (5) for shielding external visible light, the casing (5) covering the conveying mechanism (1) and the fluorescent mechanism (4); the casing (5) is formed with an inlet (51) for ore to enter at the input end of the conveying mechanism (1), and is formed with an outlet (52) for ore to be discharged at the output end of the conveying mechanism (1).

9. The ore dressing device according to claim 8, characterized in that: The mineral processing device further comprises a light shielding plate (6) arranged inside the casing (5) and between the fluorescent mechanism (4) and the feed inlet (51), and used for shielding visible light entering from the feed inlet (51), wherein the bottom edge of the light shielding plate (6) is 60-120 mm above the belt (11) of the conveying mechanism (1).

10. The ore dressing device according to claim 8, characterized in that: The ore dressing device further comprises a dark chamber (7) arranged inside the casing (5) and covering the fluorescent mechanism (4); the bottom end of the dark chamber (7) is open, and the bottom edge of the dark chamber (7) is 60-120 mm above the belt (11) of the conveying mechanism (1).

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