Double-stage linkage type impurity separation device for polymetallic ore and feeding method of double-stage linkage type impurity separation device

Abstract

The invention relates to the technical field of ore separation, in particular to a polymetallic ore two-stage linkage type impurity separation device and a feeding method thereof.The polymetallic ore two-stage linkage type impurity separation device comprises a first screening mechanism, and the first screening mechanism is connected with a second screening mechanism through a linkage structure; the linkage structure comprises a first ring body and a second ring body which are fixedly connected to the two ends of the first screening mechanism, and a plurality of shifting arc pieces are annularly distributed on the first ring body and the second ring body; the stirring arc piece is connected with the second screening mechanism through the butt joint wheel, the first screening mechanism is arranged above the second screening mechanism through the containing mechanism, a discharging area of the first screening mechanism is located in the middle section of the second screening mechanism, ore obtained after coarse screening directly enters a fine screening area, the middle conveying link is reduced, and secondary pollution of ore particles is avoided. And the first discharging opening and the second discharging opening are formed in the two sides of the containing box correspondingly, a fine material discharging opening is formed in the bottom, and efficient classification and collection of ores with different particle sizes are achieved.

Description

Technical Field

[0001] This invention relates to the technical field of ore separation, and in particular to a two-stage linkage impurity separation device for polymetallic ores and its feeding method. Background Technology

[0002] Polymetallic deposits are those containing two or more economically valuable metallic elements, which often exist in symbiotic or associated forms within the same deposit. Their formation is the result of a combination of complex geological processes, including magmatic activity, hydrothermal seepage, and sedimentary mineralization. These geological processes lead to the migration, enrichment, and precipitation of metallic elements, thereby forming deposits with mining value. Common types of polymetallic deposits include copper-lead-zinc deposits, lead-zinc-silver deposits, and tungsten-tin-molybdenum deposits.

[0003] When mining complex metal ores, it is necessary to test the ore for initial selection. During the testing process, the sample ore needs to be screened. In the screening process, there is a dilemma: traditional single-stage equipment often faces the dual choice of improving grade and recovery rate. Increasing the grade of the ore obtained by screening will lead to a decrease in recovery rate; conversely, increasing the recovery rate will reduce the grade of the ore. Therefore, we designed a two-stage linkage impurity separation device for polymetallic ores and its feeding method to perform dual separation of ore and carry out coarse and fine screening simultaneously. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problem that it is difficult to balance the ore grade and ore grade recovery rate in the above-mentioned or existing technologies of polymetallic ore dual-stage linkage impurity separation devices, this invention is proposed.

[0006] Therefore, the purpose of this invention is to provide a two-stage linkage impurity separation device for polymetallic ores and its feeding method.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a polymetallic ore dual-stage linkage impurity separation device, comprising a first screening mechanism, wherein the first screening mechanism is connected to a second screening mechanism through a linkage structure; the linkage structure comprises a first ring body and a second ring body fixedly connected to both ends of the first screening mechanism, wherein multiple actuating arc plates are arranged in a ring on both the first ring body and the second ring body; the actuating arc plates are connected to the second screening mechanism through docking wheels.

[0008] As a preferred embodiment of the polymetallic ore dual-stage linkage impurity separation device of the present invention, wherein: multiple actuating arc plates on the first ring body and the second ring body are staggered, and the actuating arc plates are provided with multiple protrusions of gradually increasing size, and the protrusions are adapted to the docking wheel.

[0009] As a preferred embodiment of the polymetallic ore dual-stage linkage impurity separation device of the present invention, the first screening mechanism includes a screen cylinder, and multiple baffles are arranged in a circular array inside the screen cylinder. The baffles are provided with abutment components and a drive component located at the top of the screen cylinder.

[0010] As a preferred embodiment of the polymetallic ore dual-stage linkage impurity separation device of the present invention, wherein: the screen cylinder is inclined inside, the baffle is composed of two vertical rods and a horizontal rod for connecting the two vertical rods, the axis of the horizontal rod in the baffle is on the same plane as the axis of the screen cylinder, and there is a gap between the horizontal rod and the inner wall of the screen cylinder.

[0011] As a preferred embodiment of the polymetallic ore dual-stage linkage impurity separation device of the present invention, wherein: the contact component includes an installation groove formed on the stop frame, and a contact plate rotatably connected to the stop frame, a fixed plate is fixedly connected to the installation groove, a movable plate is slidably connected to the fixed plate through a limiting arc rod, the contact plate is provided with a receiving groove corresponding to the stop frame, the fixed plate and the movable plate are connected by an arc spring, and the movable plate is fixedly connected to the inner wall of the receiving groove.

[0012] As a preferred embodiment of the polymetallic ore dual-stage linkage impurity separation device of the present invention, the second screening mechanism includes an inclined screen plate, and screening springs are fixedly connected to the four corners at the bottom of the screen plate; the bottom of the screen plate is located on the same side as the feed end of the first screening mechanism.

[0013] As a preferred embodiment of the polymetallic ore dual-stage linkage impurity separation device of the present invention, the device is characterized in that: the first screening mechanism and the second screening mechanism are assembled through a accommodating mechanism, the first screening mechanism is located at the top of the second screening mechanism, and the screening and discharge area of ​​the first screening mechanism is located in the middle section of the second screening mechanism.

[0014] As a preferred embodiment of the polymetallic ore dual-stage linkage impurity separation device of the present invention, the containing mechanism includes a containing box fixedly connected to the first screening mechanism and the second screening mechanism. The bottom of the containing box is fixedly connected to a support plate via fixed legs. The containing box is adapted to the first screening mechanism and is provided with a feed hopper and a first discharge port. The containing box is adapted to the second screening mechanism and is fixedly connected to a second discharge port. The bottom of the containing box is provided with a fine material discharge port.

[0015] As a preferred embodiment of the polymetallic ore dual-stage linkage impurity separation device of the present invention, wherein: the first discharge port and the second discharge port are located on both sides of the containing box, the first discharge port is composed of a circular cover and a baffle plate at its bottom, and the second discharge port is composed of an inclined guide plate and a guide groove opened on the guide plate.

[0016] Another object of the present invention is to provide a feeding method.

[0017] To solve the problem of feeding metal ore, this invention provides the following technical solution: a feeding method, including equipment inspection; driving the separation device and feeding; detecting the material state; if the material state is good, increasing the input by 5-10% to continue feeding; if the material state is bad, reducing the material input by 10-15% and making a second judgment on the material state; if the material state is good, continuing feeding; if the state is bad, performing overall equipment maintenance to troubleshoot the fault.

[0018] The beneficial effects of the polymetallic ore dual-stage linkage impurity separation device of the present invention are as follows: The first screening mechanism of the present invention adopts an inclined screen cylinder and an internal baffle design, combined with the elastic buffering effect of the baffle component, which can break up ore clumps during screening, avoid blockage, and improve coarse screening efficiency. The second screening mechanism adopts a vibrating screen plate and a screening spring. Through the periodic vibration generated by the linkage structure, the fine screening effect is enhanced, ensuring that fine ore particles are fully separated, while reducing the mixing of impurities.

[0019] This invention achieves synchronous coarse and fine screening through the linkage design of the first screening mechanism and the second screening mechanism, effectively solving the problem of balancing ore grade and recovery rate in traditional single-stage screening equipment. The linkage structure enables the second screening mechanism to move synchronously with the first screening mechanism through the mechanical transmission of the actuating arc plate and the docking wheel, without the need for an additional power source. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. 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.

[0021] Figure 1 This is a partial structural cross-sectional view of a polymetallic ore dual-stage linkage impurity separation device.

[0022] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0023] Figure 3 This is a schematic diagram of the overall structure of a two-stage linkage impurity separation device for polymetallic ores.

[0024] Figure 4 This is a cross-sectional view of a two-stage linkage impurity separation device for polymetallic ores.

[0025] Figure 5 This is a schematic diagram of the first screening mechanism of a two-stage linkage impurity separation device for polymetallic ores.

[0026] Figure 6 Another perspective view of the first screening mechanism of a two-stage linkage impurity separation device for polymetallic ores.

[0027] Figure 7 for Figure 6 Enlarged view of section B in the middle.

[0028] Figure 8 This is a schematic diagram of the contact component structure of a two-stage linkage impurity separation device for polymetallic ores.

[0029] Figure 9 This is a schematic diagram of the internal structure of the contact component in a two-stage linkage impurity separation device for polymetallic ores.

[0030] Figure 10 This is a flowchart of the feeding method. Detailed Implementation

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0034] Example 1, referring to Figures 1 to 4 This is the first embodiment of the present invention. This embodiment provides a polymetallic ore dual-stage linkage impurity separation device, including a first screening mechanism 100, and the first screening mechanism 100 is connected to a second screening mechanism 300 through a linkage structure 200.

[0035] Furthermore, the first screening mechanism 100 is used for coarse screening of the ore, removing larger ore particles and guiding the smaller portion of the initial ore to the second screening mechanism 300. The second screening mechanism 300 can screen the ore particles falling on top of it, removing smaller particles and separating medium-sized particles. Therefore, the initial ore particles, after passing through the first screening mechanism 100 and the second screening mechanism 300, can be divided into three grades: coarse ore, medium-sized ore, and fine-sized ore. Compared with existing ore screening mechanisms, this device is also equipped with a linkage mechanism, using a single drive mechanism to simultaneously drive two different screening mechanisms, which can effectively improve screening efficiency.

[0036] The linkage structure 200 includes a first ring body 201 and a second ring body 202 fixedly connected to both ends of the first screening mechanism 100. Multiple actuating arc plates 203 are arranged in a ring on both the first ring body 201 and the second ring body 202. The actuating arc plates 203 contact the second screening mechanism 300 through the docking wheel 204.

[0037] Specifically, both the first ring 201 and the second ring 202 are made of metal. The first ring 201 and the second ring 202 are set to connect multiple actuating arc plates 203 to the first screening mechanism 100. The first screening mechanism 100 rotates in a ring to screen the ore during operation. The first ring 201 and the second ring 202 are sleeved on the first screening mechanism 100 and can rotate with the first screening mechanism 100, and at the same time drive the actuating arc plates 203 to rotate. The actuating arc plates 203 are made of rubber. The use of rubber material can avoid violent impact due to excessive rigidity of the components, thereby ensuring the stable operation of the device. The docking wheel 204 is made of rubber. The second screening mechanism 300 and the docking wheel 204 are fixedly connected by bolts.

[0038] Multiple actuating arc plates 203 on the first ring body 201 and the second ring body 202 are arranged in an alternating manner. Multiple protrusions 205 with gradually increasing size are provided on the actuating arc plates 203. The protrusions 205 are adapted to the docking wheel 204. During the rotation of the first screening mechanism 100, the actuating arc plates 203 arranged in an alternating manner can cause the protrusions 205 to alternately collide with the docking wheel 204, thereby causing the second screening mechanism 300 to shake continuously and improve its screening efficiency.

[0039] In summary, the linkage design of the coarse screening of the first screening mechanism 100 and the fine screening of the second screening mechanism 300 achieves synchronous coarse and fine screening, effectively solving the problem of balancing ore grade and recovery rate in traditional single-stage screening equipment. The linkage structure 200 enables the second screening mechanism 300 to move synchronously with the first screening mechanism 100 through the mechanical transmission of the actuating arc plate 203 and the docking wheel 204, without the need for an additional power source, which is energy-saving and compact.

[0040] Example 2, refer to Figures 1-9 This is the second embodiment of the present invention. Unlike the previous embodiment, the first screening mechanism 100 and the second screening mechanism 300 are different. The first screening mechanism 100 includes a screen cylinder 101. Multiple baffles 102 are arranged in a circular array inside the screen cylinder 101. The baffles 102 are provided with abutment components 103 and a drive component 104 located at the top of the screen cylinder 101.

[0041] Specifically, the screen cylinder 101 is made of metal. The screen cylinder 101 is set up to coarsely screen the initial ore. The baffle frame 102 is set up to break up clumps of ore particles, which facilitates the screening of the screen cylinder 101. Multiple baffle frames 102 arranged in a ring array can continuously agitate the ore inside the screen cylinder 101 during the rotation of the screen cylinder 101, thereby improving its screening efficiency. The drive component 104 is set up to provide power to the screen cylinder 101.

[0042] The screen cylinder 101 is inclined, which allows the ore inside to move towards the discharge direction, preventing ore from clogging the screen cylinder 101. The baffle 102 consists of two vertical rods and a horizontal rod connecting the two vertical rods. The vertical rods are used to fix the horizontal rod, and the horizontal rod is used to break up clumps of ore. The axis of the horizontal rod in the baffle 102 is on the same plane as the axis of the screen cylinder 101. During the rotation of the screen cylinder 101, the horizontal rod is aligned with the screen cylinder 101 to ensure effective agitation of clumps of ore. There is a gap between the horizontal rod and the inner wall of the screen cylinder 101. This gap allows qualified fine ore particles to pass through while effectively preventing clumps of ore particles from passing through, thus better agitating the clumps of ore particles.

[0043] The abutment assembly 103 includes a mounting groove 103a formed on the abutment frame 102 and an abutment plate 103b rotatably connected to the abutment frame 102. A fixing plate 103c is fixedly connected to the mounting groove 103a. A movable plate 103e is slidably connected to the fixing plate 103c through a limiting arc rod 103d. The abutment plate 103b has a receiving groove 103f corresponding to the abutment frame 102. The fixing plate 103c and the movable plate 103e are connected by an arc spring 103g. The movable plate 103e is fixedly connected to the inner wall of the receiving groove 103f.

[0044] The mounting groove 103a is annular and located on the stop frame 102. The contact plate 103b is used to crush clumps of ore particles. The fixing plate 103c is made of metal and has a certain strength to prevent it from being damaged due to excessive pressure. The accommodating groove 103f has a circular cross-section. The limiting arc rod 103d is slidably connected to the movable plate 103e. Both the limiting arc rod 103d and the movable plate 103e are made of metal. The setting of the limiting arc rod 103d and the movable plate 103e can effectively limit the contact plate 103b.

[0045] The drive assembly 104 includes a gear ring 104a fixedly connected to the screen cylinder 101. The gear ring 104a is connected to a drive motor 104c via a gear 104b. During operation, the drive motor 104c drives the gear 104b to rotate, the gear 104b drives the gear ring 104a to rotate, and the rotation of the gear ring 104a drives the screen cylinder 101 to rotate, thereby screening the ore particles. The drive motor 104c is electrically connected to an external power source.

[0046] Furthermore, the design of the toggle plate 203 and the protrusion 205 in the linkage structure 200, through the cooperation of the progressively larger protrusion 205 with the docking wheel 204, achieves smooth power transmission and controllable vibration frequency, reducing mechanical wear and failure rate. The overall structure does not require complex electrical control, and only one drive motor 104c is needed to drive the two-stage screening mechanism, reducing manufacturing and maintenance costs.

[0047] The second screening mechanism 300 includes a screen plate 301 placed at an incline, and screening springs 302 are fixedly connected to the four corners at the bottom of the screen plate 301; the lower part of the screen plate 301 is on the same side as the feed end of the first screening mechanism 100.

[0048] Furthermore, the screening spring 302 ensures that the screen plate 301 is in a swaying state during operation, which allows the swaying screen plate 301 to better screen the ore particles above it.

[0049] The first screening mechanism 100 and the second screening mechanism 300 are assembled through the housing mechanism 400. The first screening mechanism 100 is located on top of the second screening mechanism 300, and the screening and discharge area of ​​the first screening mechanism 100 is located in the middle section of the second screening mechanism 300. This prevents ore particles from being discharged directly from the outlet of the second screening mechanism 300 after passing through the first screening mechanism 100, thus avoiding affecting the screening effect.

[0050] The rest of the structure is the same as in Example 1.

[0051] In summary, the first screening mechanism 100 adopts an inclined screen cylinder 101 and an internal baffle 102 design. Combined with the elastic buffering effect of the contact component 103, it can break up ore clumps during the screening process, avoid blockage, and improve the coarse screening efficiency. The second screening mechanism 300 adopts a vibrating screen plate 301 and a screening spring 302. Through the periodic vibration generated by the linkage structure 200, it enhances the fine screening effect, ensures that fine ore particles are fully separated, and reduces the mixing of impurities.

[0052] Example 3, referring to Figures 1-9 This is the third embodiment of the present invention. Unlike the previous embodiment, the accommodating mechanism 400 includes an accommodating box 401 that is fixedly connected to the first screening mechanism 100 and the second screening mechanism 300. The bottom of the accommodating box 401 is fixedly connected to a support plate 403 via a fixed support leg 402. The accommodating box 401 is adapted to the first screening mechanism 100 and is provided with a feed hopper 404 and a first discharge port 405. The accommodating box 401 is adapted to the second screening mechanism 300 and is fixedly connected to a second discharge port 406. The bottom of the accommodating box 401 is provided with a fine material discharge port 407.

[0053] The container 401 is used to limit the first screening mechanism 100 and the second screening mechanism 300.

[0054] The first discharge port 405 and the second discharge port 406 are located on both sides of the container 401. The first discharge port 405 consists of a dome and a baffle plate at its bottom, and the second discharge port 406 consists of an inclined guide plate and a guide groove opened on the guide plate.

[0055] The rest of the structure is the same as in Example 2.

[0056] During primary screening, ore particles are fed into the feed hopper 404, and the drive motor 104c starts. The drive motor 104c drives the gear 104b to rotate, which in turn drives the gear ring 104a and the screen cylinder 101 to rotate. The rotation of the screen cylinder 101 drives the baffle 102 and the contact assembly 103 to rotate. The ore particles are always located at the bottom of the screen cylinder 101. The baffle 102 and the contact assembly 103 intermittently contact the ore particles to prevent them from always being at the bottom of the screen cylinder 101. At the same time, they move the ore particles toward the first discharge port 405. When the contact assembly 103 contacts the ore, the contact plate 103b first... When the contact plate 103b comes into contact with ore particles, if the ore particles are in a clump-like state, the ore particles exert a reaction force on them after contact, causing the contact plate 103b to drive the movable plate 103e to move towards the arc spring 103g, thereby increasing the supporting force of the contact plate 103b. The gradual application of force can effectively break up the clump-like ore particles, greatly reducing the wear of the contact plate 103b compared to the fixed contact plate 103b. If it comes into contact with ore particles, the fixed contact plate 103b is easily damaged. This elastic design can effectively buffer the impact. The screen cylinder 101 isolates larger ore particles and discharges them through the first discharge port 405.

[0057] During secondary screening, the protrusion 205 continuously impacts the docking wheel 204, causing the screen plate 301 to vibrate continuously. Due to the gradual change in the size of the protrusion 205, the screen plate 301 generates a changing vibration frequency, which can effectively screen the ore particles. The ore particles isolated by the screen plate 301 are discharged through the second discharge port 406, and the particles that have passed through the screen plate 301 are discharged through the fine material discharge port 407.

[0058] In summary, the holding mechanism 400 places the first screening mechanism 100 above the second screening mechanism 300, and the material discharge area of ​​the first screening mechanism 100 is located in the middle section of the second screening mechanism 300, so that the ore after coarse screening can directly enter the fine screening area, reducing intermediate conveying links and avoiding secondary mixing of ores of different particle sizes. The first discharge port 405 and the second discharge port 406 are respectively located on both sides of the holding box 401, and the bottom is provided with a fine material discharge port 407, realizing efficient classification and collection of ores of different particle sizes. This device is not only suitable for screening polymetallic ores, but can also be used for the initial selection and impurity separation of other complex ores, and has high versatility and practicality.

[0059] Example 4, refer to Figure 10 This is the fourth embodiment of the present invention, which differs from the previous embodiment in that it is a feeding method, including equipment inspection; driving the separation device and feeding; detecting the material status; if the material status is good, increasing the input by 5-10% to continue feeding; if the material status is bad, reducing the material input by 10-15% and making a second judgment on the material status; if the material status is good, continuing feeding; if the status is bad, performing overall equipment maintenance to troubleshoot.

[0060] In summary, the device can adjust the feed rate based on the separation effect of the equipment to adapt to different forms of materials to be screened.

[0061] The rest of the structure is the same as in Example 3.

[0062] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0063] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0064] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0065] It should be noted that the above 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 preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A two-stage linkage impurity separation device for polymetallic ores, characterized in that: It includes a first screening mechanism (100), and the first screening mechanism (100) is connected to a second screening mechanism (300) through a linkage structure (200); The linkage structure (200) includes a first ring body (201) and a second ring body (202) fixedly connected to both ends of the first screening mechanism (100). Both the first ring body (201) and the second ring body (202) are provided with a plurality of actuating arc plates (203) arranged in a ring. The actuating arc plate (203) is connected to the second screening mechanism (300) via the docking wheel (204).

2. The polymetallic ore dual-stage linkage impurity separation device as described in claim 1, characterized in that: The first ring body (201) and the second ring body (202) have multiple actuating arc plates (203) arranged alternately. The actuating arc plates (203) are provided with multiple protrusions (205) of gradually increasing size. The protrusions (205) are adapted to the docking wheel (204).

3. The polymetallic ore dual-stage linkage impurity separation device as described in claim 1 or 2, characterized in that: The first screening mechanism (100) includes a screen cylinder (101), and a plurality of baffles (102) are arranged in a ring array inside the screen cylinder (101). The baffles (102) are provided with abutting components (103) and a driving component (104) located at the top of the screen cylinder (101).

4. The polymetallic ore dual-stage linkage impurity separation device as described in claim 3, characterized in that: The screen cylinder (101) is inclined inside. The baffle (102) consists of two vertical rods and a horizontal rod for connecting the two vertical rods. The axis of the horizontal rod in the baffle (102) is on the same plane as the axis of the screen cylinder (101). There is a gap between the horizontal rod and the inner wall of the screen cylinder (101).

5. The polymetallic ore dual-stage linkage impurity separation device as described in claim 4, characterized in that: The abutment assembly (103) includes a mounting groove (103a) formed on the abutment frame (102) and an abutment plate (103b) rotatably connected to the abutment frame (102). A fixing plate (103c) is fixedly connected to the mounting groove (103a). A movable plate (103e) is slidably connected to the fixing plate (103c) via a limiting arc rod (103d). The abutment plate (103b) has a receiving groove (103f) corresponding to the abutment frame (102). The fixing plate (103c) and the movable plate (103e) are connected by an arc spring (103g). The movable plate (103e) is fixedly connected to the inner wall of the receiving groove (103f).

6. The polymetallic ore dual-stage linkage impurity separation device as described in claim 4 or 5, characterized in that: The second screening mechanism (300) includes a sieve plate (301) placed at an incline, and screening springs (302) are fixedly connected to the four corners at the bottom of the sieve plate (301). The bottom of the sieve plate (301) is located on the same side as the feed end of the first screening mechanism (100).

7. The polymetallic ore dual-stage linkage impurity separation device as described in any one of claims 1, 2, 4 or 5, characterized in that: The first screening mechanism (100) and the second screening mechanism (300) are assembled through a receiving mechanism (400). The first screening mechanism (100) is located on top of the second screening mechanism (300), and the screening and discharge area of ​​the first screening mechanism (100) is located in the middle section of the second screening mechanism (300).

8. The polymetallic ore dual-stage linkage impurity separation device as described in claim 7, characterized in that: The containing mechanism (400) includes a containing box (401) that is fixedly connected to the first screening mechanism (100) and the second screening mechanism (300). The bottom of the containing box (401) is fixedly connected to a support plate (403) via a fixed support leg (402). The containing box (401) is adapted to the first screening mechanism (100) and is provided with a feed hopper (404) and a first discharge port (405). The containing box (401) is adapted to the second screening mechanism (300) and is fixedly connected to a second discharge port (406). The bottom of the containing box (401) is provided with a fine material discharge port (407).

9. The polymetallic ore dual-stage linkage impurity separation device as described in claim 8, characterized in that: The first discharge port (405) and the second discharge port (406) are located on both sides of the container (401). The first discharge port (405) is composed of a dome and a baffle plate at its bottom. The second discharge port (406) is composed of an inclined guide plate and a guide groove opened on the guide plate.

10. A feeding method, characterized in that: This includes equipment inspection; driving the separation device and feeding material; detecting the material condition; if the material condition is good, increasing the input by 5-10% can be used for continuous feeding. If the material condition is poor, reduce the material input by 10-15% and reassess the material condition; if the material condition is good, continue feeding; if the condition is poor, conduct overall equipment maintenance to troubleshoot the problem.

Images