Flow film preparation equipment with split type feeding device

Abstract

The utility model discloses flow film preparation equipment with a split type feeding device, which comprises a separation table board, a feeding device and a vibration device connected with the separation table board, the feeding device is separated from the separation table board, and the feeding device is suspended above the separation table board. According to the utility model, the split type feeding device is arranged, so that the bed surface structure deformation caused by connection with the sorting table surface can be effectively prevented, the stability of a sorting liquid film can be ensured, the weight of the sorting table surface is reduced, the vibration energy transmission efficiency is improved, and the sorting efficiency is favorably improved; the flow film preparation equipment can effectively separate minerals with the granularity smaller than 19 micrometers, the concentrate enrichment ratio is larger than 5, chemical agents do not need to be added in the separation process, and the flow film preparation equipment is environmentally friendly, free of pollution, simple in structure and easy to maintain and operate.

Description

Technical Field

[0001] The utility model belongs to the technical field of gravity separation equipment, in particular to a mineral separation equipment. Background Art

[0002] In the development and utilization of mineral resources, mineral processing equipment is the core equipment for efficient mineral separation and enrichment. Its performance directly impacts resource utilization and the economic benefits of mineral processing. With the increasing depletion of easily processed ores, the proportion of difficult-to-process ores and fine-grained minerals in the resource structure has increased significantly, placing higher demands on the sorting accuracy and adaptability of mineral processing equipment. Traditional gravity separation equipment relies on density differences and film stratification to achieve separation, but its inherent flaws become increasingly prominent when processing minerals with a particle size of less than 19μm, necessitating an urgent technological breakthrough.

[0003] In mineral sorting, the effectiveness of flow film stratification decreases dramatically as particle size decreases. Because the surface energy increases with the increase in mineral specific surface area, mineral particles are susceptible to viscosity in the fluid, resulting in disordered agglomeration and exacerbating the mixing and loss of useful fine-grained minerals with gangue. Research has shown that by increasing the vibration frequency and reducing the vibration amplitude, stable and uniform micro-vibration wave transmission can be generated on the sorting table, inducing periodic shear motion in the particle group, effectively overcoming inter-particle van der Waals forces, electrostatic adsorption, and liquid bridge adhesion, promoting particle rearrangement based on density, size, and shape, and strengthening the discrete distribution characteristics of the sorting interface.

[0004] However, existing flow film mineral processing equipment usually connects the feeder to the sorting table, which not only interferes with the flow stability of the sorting liquid film, but also significantly increases the overall mass of the sorting table, resulting in increased inertia of the vibration system and low vibration energy transmission efficiency, making it difficult for the equipment to maintain the energy density and response sensitivity required for vibration, seriously restricting the advantages of vibration sorting technology. Utility Model Content

[0005] The technical problem to be solved by the present invention is to overcome the deficiencies and defects mentioned in the above background technology and provide a flow film mineral separation equipment with high vibration energy transmission efficiency, high concentrate enrichment ratio and low separation particle size lower limit and a split feeding device.

[0006] In order to solve the above technical problems, the technical solutions proposed by the present invention are as follows:

[0007] A fluid film mineral processing equipment with a split feeding device comprises a sorting table, a feeding device and a vibrating device connected to the sorting table, wherein the feeding device is separated from the sorting table and suspended above the sorting table.

[0008] In the above-mentioned flow membrane mineral processing equipment, preferably, the sorting table includes a feeding end and a discharging end, the sorting table is tilted as a whole toward the discharging end, the feeding device is arranged above the feeding end, and the direction of the sorting table from the highest point of the table to the lowest point of the table is not parallel to the length direction of the groove formed on the sorting table. The sorting table is tilted so that the flushing water and slurry of the feeding device can flow from the feeding end to the discharging end. By the tilted setting of the sorting table and the groove, the sorting table can form an inclined water flow. Under the combined action of gravity, water flow shear force and vibration force of the sorting table, particles of different densities, particle sizes and shapes settle to the bottom layer with heavy particles and light particles on the upper layer. The heavy particles on the bottom layer move along the length direction of the groove of the sorting table, and the light particles on the upper layer move along the oblique water flow direction. The particles eventually form fan-shaped zones according to density and particle size to achieve mineral separation.

[0009] In the above-mentioned flow film mineral processing equipment, preferably, the sorting table is a quadrilateral flat plate structure, and its first side and its adjacent second side are provided with baffles, the feeding end is located on the second side, and the discharge end is located on the other two adjacent third side and fourth side, and the first side and the second side are higher than the third side and the fourth side.

[0010] In the above-mentioned flow film mineral processing equipment, preferably, the fourth side is opposite to the second side, the length of the plurality of grooves decreases from the fourth side to the second side, the depth of the plurality of grooves increases from the fourth side to the second side, each groove is divided into a concentration zone close to the third side and a rough sweeping zone close to the first side, the depth of the concentration zone decreases from the first side to the third side to zero, and the depth of the rough sweeping zone remains constant. This sorting table surface gradient groove design can match the dynamic changes of the ore layer. According to the characteristics of the decreasing thickness of the ore layer and the gradually decreasing particle size from the first side to the third side and the fourth side on the sorting table surface during the sorting process, the groove depth is synchronously reduced in stages. The deep groove first captures the coarse particles that settle first, and the subsequent shallow groove captures the fine particles that settle later. The particle settling characteristics are dynamically adapted to avoid the loss of fine particles caused by strong turbulence in the deep groove, thereby ensuring the effective recovery of fine particles.

[0011] In the above-mentioned flow film mineral separation equipment, the cross-section of the groove is preferably triangular, with its longest side facing upward and its shortest side facing the fourth side. This groove configuration provides a certain degree of lateral restraint to the bottom particles as they slide within the groove, making them less susceptible to the influence of water flow. This can better guide the movement trajectory of the ore particles, improve the stability of particle movement, enhance the stratification effect of the ore particles on the sorting table, and improve sorting accuracy.

[0012] In the above-mentioned flow film mineral separation equipment, preferably, the feeding device includes a container, the bottom of the container is formed with a plurality of through holes along the length direction of the second side, the spacing between the through holes increases from the first side to the third side, and the size of the through holes decreases from the first side to the third side. This setting can meet the water and material distribution requirements of different areas of the sorting table. By increasing the spacing of the through holes and reducing the size of the through holes from the first side to the third side, the flushing water volume is continuously reduced to adapt to the characteristics of the continuously decreasing amount of ore. Specifically, under the synergistic effect of the oblique water flow and the vibration of the bed surface, the material in the selection area is finer in particle size and thinner in the ore layer after sorting in the rough sweeping selection area, requiring a smaller amount of water to avoid the loss of fine-grained minerals by the surface water flow. By reducing the size of the through holes and the number of through holes per unit length from the first side to the third side, the total area of ​​the through holes per unit length is reduced, thereby reducing the flow rate of the flushing water in the selection area to ensure the recovery effect of fine-grained minerals.

[0013] In the aforementioned fluidized membrane ore dressing equipment, the container is preferably provided with an adjustable partition for dividing the space within the container into a flushing water trough area and a slurry trough area. By changing the position of the adjustable partition, the volume of the slurry trough can be adjusted to accommodate changes in the feed flow rate. After flushing water and slurry enter the flushing water trough and slurry trough, respectively, they pass through small holes in the trough bottoms and are evenly deposited on the sorting table below the feeding device.

[0014] In the above-mentioned flow film mineral processing equipment, preferably, the vibration device includes an electromagnet, a plate spring group, an armature, an upper fixed seat and a lower fixed seat, the armature is arranged on the lower side of the upper fixed seat, the electromagnet is arranged on the lower fixed seat, the armature and the electromagnet are arranged in a corresponding position, the plate spring group is symmetrically and tilted on both sides of the electromagnet, its projection on the sorting table is parallel to the groove, its two ends are respectively connected to the upper fixed seat and the lower fixed seat, and the top surface of the upper fixed seat is fixed to the bottom surface of the sorting table. Specifically, the lower end of the plate spring group is fixed to the electromagnet on the lower fixed seat, and the upper end of the plate spring group is connected to the upper fixed seat as a support for the upper fixed seat. The armature below the upper fixed seat is arranged corresponding to the electromagnet and maintains a certain distance from the electromagnet, so that the periodic electromagnetic force generated by the electromagnet controller acts on the armature, and cooperates with the elastic action of the spring group to cause the armature to drive the upper fixed seat and the sorting table to vibrate. The tilted plate spring assembly aligns the vibration direction with the grooves, effectively allowing heavy particles to settle to the bottom layer and move along the length of the grooves. The electromagnetic leaf spring vibrator is simple to install and adjust, and the vibration parameters can be adjusted by the controller according to different sorting processes and ore characteristics, providing strong adaptability and low operating noise.

[0015] In the above-mentioned flow film mineral processing equipment, preferably, the vibration frequency of the vibration device is 25-45Hz, and the vibration amplitude is 0.1-5.0mm. Setting a higher vibration frequency can enhance particle stratification, and a smaller vibration amplitude corresponds to a smaller movement speed in the direction of the groove length, and a longer particle sorting time (when the length of the sorting table in the direction of the groove length is constant, the particle movement speed and the particle sorting time on the sorting table are inversely proportional. The smaller the movement speed, the longer the particle sorting time). Since fine particles with a particle size of less than 19μm have a low sedimentation rate, they require a longer sorting time to settle to the bottom of the flow film and be recovered. The sorting time of this setting is about 5 times that of a conventional shaking table. A longer sorting time can achieve better fine particle recovery effects.

[0016] The above-mentioned film dressing equipment preferably further includes a supporting frame, the sorting table is mounted on the supporting frame via the vibrating device, and the feeding device is connected to the supporting frame via a feeding bracket. The supporting frame primarily serves to bear the weight and maintain a certain distance between the sorting table and the ground for easy access to the product. The feeding device is connected to the supporting frame via the feeding bracket, so that the feeding device does not affect the sorting table, and the relative position of the feeding device and the sorting table can be kept fixed, while facilitating the installation and adjustment of the feeding device position.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] By setting up a split feeding device, the deformation of the bed structure caused by the connection with the sorting table can be effectively prevented, and the stability of the sorting liquid film can be guaranteed, as well as the weight of the sorting table can be reduced, the vibration energy transmission efficiency can be improved, and the sorting efficiency can be improved; the flow film mineral processing equipment of the utility model can effectively sort minerals with a particle size of less than 19 microns, and the concentrate enrichment ratio is greater than 5. The sorting process does not require the addition of chemical agents, is environmentally friendly and pollution-free, and the equipment structure is simple and easy to maintain and operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is an overall schematic diagram of a fluidized film mineral processing equipment with a split feeding device according to an embodiment;

[0021] Figure 2 Schematic diagram of a feeding device according to an embodiment;

[0022] Figure 3 A schematic diagram of a sorting table in an embodiment;

[0023] Figure 4 for Figure 3 Partial schematic diagram of the groove section at AA in the middle;

[0024] Figure 5 A schematic diagram of a vibration device according to an embodiment;

[0025] Figure 6 It is a front view of the vibration device of the embodiment.

[0026] Legend

[0027] 1. Sorting table; 11. First side; 12. Second side; 13. Third side; 14. Fourth side; 15. Notch; 16. Selecting area; 17. Roughing area; 2. Feeding device; 21. Through hole; 22. Adjustable partition; 23. Flushing trough area; 24. Slurry trough area; 25. Feeding bracket; 3. Vibrating device; 31. Electromagnet; 32. Plate spring assembly; 33. Armature; 34. Upper fixing seat; 35. Lower fixing seat; 36. Rubber shock-absorbing block; 4. Carrying frame. DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of the present invention, the present invention will be described in more comprehensive and detailed manner below in conjunction with the accompanying drawings and preferred embodiments of the specification, but the protection scope of the present invention is not limited to the following specific embodiments.

[0029] It should be noted that when an element is described as being "fixed, fixed, connected or communicated with" another element, it can be directly fixed, fixed, connected or communicated with the other element, or it can be indirectly fixed, fixed, connected or communicated with the other element through other intermediate connectors.

[0030] Unless otherwise defined, all technical terms used hereinafter have the same meanings as those generally understood by those skilled in the art. The technical terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present invention.

[0031] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0032] Example:

[0033] like Figures 1 to 6As shown, the fluid membrane mineral processing equipment with a split feeding device of this embodiment includes a sorting table 1, a feeding device 2 and a vibration device 3 connected to the sorting table 1, the feeding device 2 is separated from the sorting table 1, and the feeding device 2 is suspended above the sorting table 1.

[0034] In this embodiment, the sorting table 1 includes a feeding end and a discharging end. The sorting table 1 is tilted as a whole toward the discharging end. The feeding device 2 is arranged above the feeding end. The direction from the highest point of the sorting table 1 to the lowest point of the table is not parallel to the length direction of the groove 15 formed on the sorting table 1.

[0035] In this embodiment, Figure 3 As shown, the sorting table 1 is a quadrilateral flat plate structure, and its first side 11 and its adjacent second side 12 are provided with baffles, the feeding end is located at the second side 12, and the discharging end is located at the other two adjacent third side 13 and fourth side 14, and the first side 11 and the second side 12 are higher than the third side 13 and the fourth side 14.

[0036] In this embodiment, the length of the sorting table 1 can be 0.5-5m, the width can be 0.5-3mm, and the thickness can be 5-30mm.

[0037] In this embodiment, a reinforcement strip is provided under the sorting table 1 to increase the rigidity of the sorting table 1 and reduce deformation of the sorting table 1 .

[0038] In this embodiment, the sorting table 1 and the reinforcing strips are made of lightweight and high-strength organic polymer materials. In other embodiments, they can be made of lightweight metal materials such as aluminum and magnesium, or high-strength metal materials with hollow structures to reduce weight.

[0039] In this embodiment, the third side 13 and the fourth side 14 are provided with chamfers that are beneficial to material discharge.

[0040] In this embodiment, the baffle can be 2-10 mm in height and 2-10 mm in width, and its length is the same as the length of the side on which it is located. This baffle height is smaller than that of conventional shaking table baffles, ensuring that ore particles are not washed away during the sorting process while further reducing the weight of the sorting table 1, achieving more efficient transmission of vibration energy, and improving the sorting effect.

[0041] In this embodiment, the fourth side 14 is opposite to the second side 12, the length direction of the groove 15 is parallel to the second side 12, the lengths of the multiple grooves 15 decrease successively from the fourth side 14 to the second side 12, and the depths of the multiple grooves 15 increase successively from the fourth side 14 to the second side 12. Each groove 15 is divided into a selected area 16 close to the third side 13 and a rough scanning area 17 close to the first side 11. The depth of the selected area 16 decreases successively from the first side 11 to the third side 13 to zero, and the depth of the rough scanning area 17 remains constant.

[0042] In this embodiment, Figure 4 As shown, the cross section of the groove 15 is triangular, with its longest side facing upward and its shortest side facing the fourth side 14 .

[0043] In this embodiment, the base of the inverted triangle may be 2-10 mm, and the height may be 1-5 mm.

[0044] In this embodiment, Figure 2 As shown, the feeding device 2 includes a container, and a plurality of through holes 21 are formed on the bottom of the container along the length direction of the second side 12. The spacing between the through holes 21 increases from the first side 11 to the third side 13, and the size of the through holes 21 decreases from the first side 11 to the third side 13.

[0045] In this embodiment, an adjustable partition 22 is provided in the container for dividing the space in the container into a flushing water tank area 23 and a slurry tank area 24. The slurry tank area 24 is provided near the first side 11.

[0046] In this embodiment, the feeding device 2 is made of lightweight and high-strength organic polymer material, and the container is a long strip groove, the length of which can be 0.5-5 meters and the diameter can be 20-60 mm. The size of the through hole 21 can be 2-6 mm, the arrangement of the through holes 21 can be 1-6 rows, and the spacing between the through holes 21 can be 10-30 mm.

[0047] In this embodiment, the height between the bottom of the feeding device 2 and the sorting table 1 can be 10-50 mm.

[0048] In this embodiment, Figure 5 and Figure 6 As shown, the vibration device 3 includes an electromagnet 31, a plate spring group 32, an armature 33, an upper fixed seat 34 and a lower fixed seat 35. The armature 33 is arranged on the lower side of the upper fixed seat 34, and the electromagnet 31 is arranged on the lower fixed seat 35. The armature 33 and the electromagnet 31 are arranged in corresponding positions. The plate spring group 32 is symmetrically and obliquely arranged on both sides of the electromagnet 31. Its projection on the sorting table 1 is parallel to the groove 15, and its two ends are connected to the upper fixed seat 34 and the lower fixed seat 35 respectively. The top surface of the upper fixed seat 34 is fixedly connected to the bottom surface of the sorting table 1.

[0049] In this embodiment, two leaf spring groups 32 are symmetrically arranged on either side of the electromagnet 31. Each leaf spring group 32 includes three leaf springs, and the angle between the leaf springs and the sorting table 1 can be 60°-80°. In other embodiments, the number of leaf springs in a single leaf spring group 32 can range from 2 to 20, and the springs can be made of alloy steel or fiber-reinforced composite materials.

[0050] In this embodiment, the vibration frequency of the vibration device 3 may be 25-45 Hz, and the vibration amplitude may be 0.1-5.0 mm.

[0051] In this embodiment, there is one electromagnetic leaf spring vibrator, which is arranged below the sorting table 1 near the first side 11 and the second side 12. In other embodiments, 1-6 electromagnetic leaf spring vibrators can be configured according to the area of ​​the sorting table 1.

[0052] In this embodiment, a supporting frame 4 is further included. The sorting table 1 is arranged on the supporting frame 4 through the vibration device 3, and the feeding device 2 is connected to the supporting frame 4 through a feeding bracket 25.

[0053] In this embodiment, a rubber damping block 36 is provided between the lower end of the lower fixing base 35 of the electromagnetic leaf spring vibrator and the supporting frame 4 for shock absorption. This ensures that the pulsating inclined water flow and vibration of the equipment are within a stable and controllable range, thereby ensuring the equipment's sorting effect and reducing the noise generated by vibration.

[0054] In this embodiment, the specific working process may be as follows: adjusting the inclination of the sorting table 1 according to the sorting conditions, then turning on the external flushing water and vibration device 3, and adjusting the flushing water flow rate and the vibration frequency and amplitude to the set values; feeding the configured slurry into the feeding device 2, and the slurry and flushing water pass through the through hole 21 under the action of gravity and drip evenly onto the sorting table 1; the flushing water and slurry flow through the triangular grooves 15 on the sorting table 1 to generate a pulsating inclined water flow, and the sorting table 1 vibrates under the action of the vibration device 3. Particles of different densities, particle sizes and shapes are subjected to the combined action of gravity, water flow shear force and vibration force of the sorting table 1. The heavy particles of the bottom layer move along the length direction of the grooves 15 of the sorting table 1, and the light particles of the upper layer move along the oblique water flow direction. The particles eventually form fan-shaped bands according to density, particle size and shape, and the target mineral band is accessed to achieve the enrichment of the target mineral.

[0055] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A fluid film beneficiation device with a split feeding device, comprising a sorting table (1), a feeding device (2) and a vibrating device (3) connected to the sorting table (1), characterized in that: The feeding device (2) is separated from the sorting table (1), and the feeding device (2) is suspended above the sorting table (1); The sorting table (1) includes a feeding end and a discharging end. The sorting table (1) is tilted as a whole toward the discharging end. The feeding device (2) is arranged above the feeding end. The direction of the sorting table (1) from the highest point to the lowest point is not parallel to the length direction of the groove (15) formed on the sorting table (1).

2. The flow film mineral processing equipment according to claim 1, characterized in that: The sorting table (1) is a quadrilateral flat plate structure, wherein a first side (11) and an adjacent second side (12) thereof are provided with baffles, the feeding end is located at the second side (12), and the discharging end is located at the other two adjacent third side (13) and fourth side (14), and the first side (11) and the second side (12) are higher than the third side (13) and the fourth side (14).

3. The flow film mineral processing equipment according to claim 2, characterized in that: The fourth side (14) is opposite to the second side (12), the lengths of the plurality of grooves (15) decrease from the fourth side (14) to the second side (12), the depths of the plurality of grooves (15) increase from the fourth side (14) to the second side (12), each groove (15) is divided into a selected area (16) close to the third side (13) and a rough scanning area (17) close to the first side (11), the depth of the selected area (16) decreases from the first side (11) to the third side (13) to zero, and the depth of the rough scanning area (17) remains constant.

4. The flow film mineral processing equipment according to claim 2, characterized in that: The cross section of the groove (15) is triangular, with its longest side facing upward and its shortest side facing the fourth side (14).

5. The flow film mineral processing equipment according to claim 2, characterized in that: The feeding device (2) comprises a container, wherein a plurality of through holes (21) are formed on the bottom of the container along the length direction of the second side (12), the spacing between the through holes (21) increases in sequence from the first side (11) to the third side (13), and the size of the through holes (21) decreases in sequence from the first side (11) to the third side (13).

6. The flow film mineral processing equipment according to claim 5, characterized in that: An adjustable partition (22) is provided in the container for dividing the space in the container into a flushing water tank area (23) and a slurry tank area (24).

7. The flow film mineral processing equipment according to any one of claims 1 to 6, characterized in that: The vibration device (3) includes an electromagnet (31), a plate spring group (32), an armature (33), an upper fixed seat (34) and a lower fixed seat (35), wherein the armature (33) is arranged on the lower side of the upper fixed seat (34), the electromagnet (31) is arranged on the lower fixed seat (35), the armature (33) and the electromagnet (31) are arranged in a corresponding position, the plate spring group (32) is symmetrically and tiltedly arranged on both sides of the electromagnet (31), and its projection on the sorting table (1) is parallel to the groove (15), and its two ends are respectively connected to the upper fixed seat (34) and the lower fixed seat (35), and the top surface of the upper fixed seat (34) is fixedly connected to the bottom surface of the sorting table (1).

8. The flow film mineral processing equipment according to any one of claims 1 to 6, characterized in that: It also includes a supporting frame (4), the sorting table (1) is arranged on the supporting frame (4) through the vibration device (3), and the feeding device (2) is connected to the supporting frame (4) through a feeding bracket (25).

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