A copper-zinc ore pre-selection grading device and method based on multi-stage cyclone coupling

Abstract

The application belongs to the technical field of mining equipment, and discloses a copper-zinc ore pre-selection grading device and method based on multi-stage cyclone coupling, which comprises a pretreatment first-stage equipment installed on a support assembly, and a feeding pipe is fixedly connected to the lower end of the pretreatment first-stage equipment; the end of the feeding pipe away from the pretreatment first-stage equipment is connected with a second-stage cyclone coupler, a third-stage cyclone coupler and a fourth-stage cyclone coupler connected in sequence through a circulating pipe; the magnetic dispersion assembly and the multi-stage cyclone coupler are arranged at the output end of the pretreatment first-stage equipment; the auxiliary pipe body, the magnetic block and the magnetic sheet in the magnetic dispersion assembly cooperatively form a reinforced magnetic field to perform magnetic dispersion treatment on the ore slurry groups in the feeding pipe, so that the ore slurry groups are broken up to uniformly distribute the ore slurry particles, and the ore slurry groups are prevented from affecting the subsequent grading accuracy, thereby effectively solving the technical problems of uneven grading and low efficiency caused by the ore slurry group gathering during copper-zinc ore pre-selection grading in the prior art.

Description

Technical Field

[0001] This invention belongs to the field of mining equipment technology, specifically a copper-zinc ore pre-selection and classification device and method based on multi-stage vortex coupling. Background Technology

[0002] In copper-zinc ore beneficiation, pre-classification is a crucial pretreatment step. Its core purpose is to separate the crushed copper-zinc ore slurry according to particle size, screening out ore particles that meet the requirements of subsequent flotation and grinding processes, and removing unqualified slime and coarse impurities, thereby improving subsequent beneficiation efficiency and reducing production costs. Currently, the industry widely uses multi-stage cyclone couplers as the core equipment for copper-zinc ore pre-classification, working in conjunction with pretreatment crushing equipment to achieve slurry classification. Its main working method is to crush the copper-zinc ore raw material through pretreatment equipment, then transport the slurry to the multi-stage cyclone coupler, where centrifugal force is used to separate ore particles of different sizes.

[0003] For example, CN222678366U discloses a vortex cavitation coupled flotation device for fine-grained minerals. It includes a flotation body and a cavitation bubble generator. The flotation body comprises an upper cylindrical flotation body for feeding raw ore and collecting concentrate, a lower conical flotation body for separation and tailings discharge, a raw ore feed pipe located at the axis of the cylindrical flotation body, and a pressure stabilizing plate. The flotation device utilizes hydraulic cavitation bubbles generated by the cavitation bubble generator, which are pressurized and fed into the stirring zone of the flotation device. The collapse of the cavitation bubbles generates shock waves that clean the surface of mineral particles, achieving the effect of dispersing minerals. It also releases special microbubbles that combine with the fine-grained concentrate to form mineralized bubbles that float to the surface, significantly improving the recovery rate of difficult-to-float fine-grained minerals, reducing reagent consumption, and achieving highly efficient flotation.

[0004] While the above-mentioned solutions significantly improve the recovery rate of refractory fine-grained minerals, existing copper-zinc ore pre-classification technologies often result in the formation of slurry agglomerates in the slurry after the pre-treatment crushing equipment crushes the raw materials. These agglomerates are formed by the aggregation of fine mineral particles, with particle sizes much larger than individual mineral particles. When such slurry agglomerates enter the conveying pipeline along with the slurry and are transported to the multi-stage cyclone coupler, they severely affect the classification accuracy. To address the aforementioned problem of slurry agglomeration, some classification devices attempt to disperse the slurry agglomerates by adding agitating components. However, these agitating components require additional power sources, which not only increases the complexity of the equipment structure and energy consumption but also has limited agitation effect, failing to completely disperse stubborn slurry agglomerates, leaving some agglomerates to enter the cyclone classification stage. Summary of the Invention

[0005] To address the problems mentioned in the background section, this invention provides a copper-zinc ore pre-selection and classification device and method based on multi-stage vortex coupling.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a copper-zinc ore pre-selection and classification device based on multi-stage cyclone coupling, comprising a pre-treatment primary device mounted on a support assembly for pre-processing and crushing copper-zinc ore raw materials, dissociating the lumpy copper-zinc ore raw materials into a slurry state that facilitates subsequent classification processing; a conveying pipe is fixedly connected to the lower end of the pre-treatment primary device for conveying the copper-zinc ore slurry crushed by the pre-treatment primary device; a secondary cyclone coupler, a tertiary cyclone coupler, and a quaternary cyclone coupler are connected sequentially through a circulating material pipe at the end of the conveying pipe for performing stepwise gradient classification of the slurry conveyed by the conveying pipe, separating mineral particles of different sizes; a motor is fixedly connected to the upper end of the pre-treatment primary device; a vertical crushing shaft extending into the pre-treatment primary device is installed at the output end of the motor; and a magnetic dispersion component is also included outside the conveying pipe for magnetically dispersing the slurry clumps in the conveying pipe, breaking up the slurry clumps and making the slurry particles evenly distributed. The magnetic dispersion component includes an auxiliary tube, with a linkage vertical shaft fixedly connected inside the auxiliary tube and connected to the vertical crushing shaft. An outer shaft is fixedly connected to the outer end of the linkage vertical shaft, and multiple side bases distributed in a ring at equal intervals are fixedly connected to the outer end of the outer shaft. A magnetic sheet is provided at the end of the side base away from the linkage vertical shaft. Multiple inner dividing grooves are opened at the inner end of the auxiliary tube, and a magnetic block is fixedly connected to the inner end of the inner dividing groove.

[0007] Preferably, a spring-loaded component is provided between two adjacent magnetic sheets, the spring-loaded component including a slot formed on the side of the magnetic sheet away from the base, and a transverse elastic linkage rod is assembled between two adjacent slots.

[0008] Preferably, a plurality of springs are elastically assembled between the side base and the magnetic sheet, and the plurality of springs are distributed vertically and equidistantly.

[0009] Preferably, corrugated side sealing surfaces are symmetrically fixedly connected between the side base and the magnetic sheet on both sides, and both the upper and lower ends of the side base are sealed structures.

[0010] Preferably, the magnetic sheet has a sheet-like structure, the magnetic block has a cuboid structure, and both the magnetic sheet and the magnetic block are made of neodymium iron boron permanent magnets.

[0011] Preferably, the transverse elastic linkage rod consists of a stainless steel rod and a compression spring sleeved on the outside of the stainless steel rod, and both ends are connected to the slot by threads.

[0012] Preferably, the spring is a cylindrical helical compression spring made of spring steel, and its two ends are fixed to the side base and the magnetic sheet by welding.

[0013] Preferably, the corrugated side sealing surface is made of wear-resistant nitrile rubber and has a corrugated structure.

[0014] Preferably, the linkage vertical shaft is a cylindrical shaft, and the linkage vertical shaft and the outer main shaft are fixedly connected by a flat key.

[0015] A pre-selection and classification method for copper-zinc ore based on multi-stage vortex coupling includes the following steps: S1: Start the motor, and the motor output will drive the vertical crushing shaft to rotate; S2: The vertical crushing shaft drives the linkage vertical shaft in the auxiliary tube of the magnetic dispersion component, and the magnetic block in the auxiliary tube and the magnetic sheet driven by the side base form a strengthened magnetic field. S3: The first-stage pretreatment equipment crushes the copper-zinc ore raw materials. The crushed slurry is transported through the conveying pipeline. The enhanced magnetic field inside the auxiliary pipe disperses the slurry clumps in the conveying pipeline. S4: The slurry after magnetic dispersion is transported to the secondary cyclone coupler, tertiary cyclone coupler, and quaternary cyclone coupler connected in sequence through the circulating material pipe to complete the classification. Unqualified slurry is returned to the conveying pipeline through the circulating material pipe for repeated treatment until the classification standard is met. S5: When the magnetic sheet is impacted, the spring undergoes elastic deformation to buffer the impact force, the transverse elastic linkage rod transmits the force and disperses the impact, and the corrugated side sealing surface seals the gap to prevent impurities from entering.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, through the structural cooperation of a magnetic dispersion component and a multi-stage vortex coupler at the output end of the pretreatment primary equipment, uses the auxiliary tube, magnetic block, and magnetic sheet in the magnetic dispersion component to form a strengthened magnetic field, which magnetically disperses the slurry clumps in the conveying pipeline, breaking up the slurry clumps and making the slurry particles evenly distributed, thus avoiding the slurry clumps from affecting the subsequent classification accuracy. This effectively solves the technical problem of uneven classification and low efficiency caused by slurry agglomeration during copper-zinc ore pre-selection and classification in the prior art. This invention, through the structural cooperation of the elastic component, side base and magnetic sheet, and the synergistic effect of the lateral elastic linkage rod, spring and corrugated side sealing surface, can not only buffer the impact force of impurities on the magnetic sheet and disperse the force, but also seal the gap between components to prevent impurities from entering, avoid damage to the magnetic sheet and component jamming, and significantly improve the operational stability and service life of the magnetic dispersion component. This invention, through the coordinated arrangement of a motor, a vertical crushing shaft, and a circulating material pipe, allows the motor to synchronously provide power for crushing, magnetic dispersion, and grading operations, eliminating the need for an additional power source and simplifying the device structure. At the same time, the circulating material pipe enables the return and repeated treatment of substandard slurry, avoiding ore waste, effectively reducing equipment energy consumption and production costs, and improving the efficiency and resource utilization of copper-zinc ore pre-selection and grading. Attached Figure Description

[0017] Figure 1This is a schematic diagram of the overall structure of the device of the present invention; Figure 2 This is a schematic diagram of the magnetic dispersion component structure of the present invention; Figure 3 This is a schematic diagram of the internal segmentation groove structure of the present invention; Figure 4 This is a schematic diagram of the elastic component structure of the present invention; Figure 5 This is a partial enlarged structural diagram of the side base of the present invention; Figure 6 For the present invention Figure 5 A magnified schematic diagram of the partial truncation at point A in the middle.

[0018] In the diagram: 1. Pre-treatment primary equipment; 2. Material conveying pipeline; 3. Secondary cyclone coupler; 4. Tertiary cyclone coupler; 5. Quaternary cyclone coupler; 6. Circulating material pipe; 7. Motor; 8. Vertical crushing main shaft; 9. Magnetic dispersion component; 900. Auxiliary pipe body; 901. Linkage vertical shaft; 902. Outer main shaft; 903. Side base; 904. Magnetic sheet; 905. Inner dividing groove; 906. Magnetic block; 10. Elastic component; 1000. Hole groove; 1001. Lateral elastic linkage rod; 1002. Spring; 1003. Corrugated side sealing surface. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 6 As shown, this invention provides a copper-zinc ore pre-selection and classification device based on multi-stage cyclone coupling. It includes a pre-treatment primary device 1 mounted on a support assembly for pre-processing and crushing copper-zinc ore raw materials, separating the lumpy raw materials into a slurry state suitable for subsequent classification. A conveying pipe 2 is fixedly connected to the lower end of the pre-treatment primary device 1 for conveying the crushed copper-zinc ore slurry. The end of the conveying pipe 2 away from the pre-treatment primary device 1 is connected to a secondary cyclone coupler 3, a tertiary cyclone coupler 4, and a quaternary cyclone coupler 5, which are sequentially connected via a circulating material pipe 6, for graded classification of the slurry from the conveying pipe 2, separating mineral particles of different sizes. A motor 7 is fixedly connected to the upper end of the pre-treatment primary device 1, and a vertical crushing shaft 8 extending into the pre-treatment primary device 1 is installed at the output end of the motor 7. The device also includes a magnetic dispersion component 9 disposed outside the conveying pipe 2 for magnetically dispersing the slurry clumps within the conveying pipe 2, breaking up the clumps and ensuring uniform particle distribution.

[0021] The above scheme is adopted as follows: the first-stage pretreatment equipment 1 serves as the initial processing component for copper-zinc ore raw materials. Its overall structure is closed, which can perform preliminary crushing and dissociation of copper-zinc ore raw materials, breaking the lumpy raw materials into a slurry state that is convenient for subsequent classification processing, and avoiding the lumpy raw materials from directly entering the conveying pipe 2 and causing blockage. The second-stage cyclone coupler 3, the third-stage cyclone coupler 4, and the fourth-stage cyclone coupler 5 are arranged in a step-by-step coupling manner to form a gradient classification structure. The slurry is circulated and classified through the circulating material pipe 6, ensuring that mineral particles of different sizes can be accurately separated, avoiding the problem of insufficient accuracy of single cyclone classification.

[0022] like Figures 1 to 6 As shown, it also includes a magnetic dispersion component 9 disposed outside the material conveying pipe 2. The magnetic dispersion component 9 includes an auxiliary tube body 900. A linkage vertical shaft 901 connected to the vertical crushing main shaft 8 is fixedly connected inside the auxiliary tube body 900. An outer main shaft 902 is fixedly connected to the outer end of the linkage vertical shaft 901. A plurality of side bases 903 distributed in a ring shape at equal intervals are fixedly connected to the outer end of the outer main shaft 902. A magnetic sheet 904 is provided at the end of the side base 903 away from the linkage vertical shaft 901. A plurality of inner dividing grooves 905 are opened at the inner end of the auxiliary tube body 900. A magnetic block 906 is fixedly connected to the inner end of the inner dividing groove 905.

[0023] The above scheme employs a ring-shaped, equidistant distribution of multiple side bases 903, ensuring the uniform arrangement of the magnetic sheets 904. This allows the magnetic field generated by the magnetic sheets 904 to form a ring distribution, which superimposes with the ring magnetic field generated by the magnetic blocks 906 inside the auxiliary tube 900, thereby forming a reinforced magnetic field. The magnetic line cutting effect generated by the reinforced magnetic field can destroy the agglomeration structure formed between slurry particles due to surface charge or intermolecular forces, promoting the redispersibility of agglomerated slurry particles. Simultaneously, in conjunction with the fluid shear force generated by the rotation of the magnetic sheets 904, efficient crushing and uniform dispersion of slurry agglomerates are achieved.

[0024] like Figures 1 to 6As shown, a spring assembly 10 is provided between two adjacent magnetic sheets 904. The spring assembly 10 includes a slot 1000 formed on the side of the magnetic sheet 904 away from the side base 903. A transverse elastic linkage rod 1001 is assembled between two adjacent slots 1000. Multiple springs 1002 are elastically assembled between the side base 903 and the magnetic sheet 904. The multiple springs 1002 are vertically and equidistantly distributed. Corrugated side sealing surfaces 1003 are symmetrically fixedly connected on both sides between the side base 903 and the magnetic sheet 904. The upper and lower ends of the side base 903 are sealed structures. The magnetic sheet 904 has a sheet-like structure. The magnetic block 90 6 is a cuboid structure. Both the magnetic sheet 904 and the magnetic block 906 are made of neodymium iron boron permanent magnets. The transverse elastic linkage rod 1001 consists of a stainless steel rod and a compression spring sleeved on the outside of the stainless steel rod. Both ends are connected to the slot 1000 by threads. The spring 1002 is a cylindrical helical compression spring made of spring steel. Both ends are fixed to the side base 903 and the magnetic sheet 904 by welding, respectively. The corrugated side sealing surface 1003 is made of wear-resistant nitrile rubber and has a corrugated structure. The linkage vertical shaft 901 is a cylindrical shaft and is fixedly connected to the outer main shaft 902 by a flat key.

[0025] The above scheme is adopted: the transverse elastic linkage rod 1001 is composed of a stainless steel rod and a compression spring. The stainless steel rod plays a supporting and linkage role, and the compression spring plays an elastic buffer role. The combination design of the two enables the transverse elastic linkage rod 1001 to transmit force and generate elastic deformation when the magnetic sheet 904 is impacted, further dispersing the impact force, ensuring the coordinated linkage of adjacent magnetic sheets 904, and avoiding the concentration of force on a single magnetic sheet 904.

[0026] The copper-zinc ore pre-selection and classification device and method based on multi-stage vortex coupling are as follows: S1: Start motor 7, the output of motor 7 drives the vertical crushing shaft 8 to rotate; S2: The vertical crushing shaft 8 drives the linkage vertical shaft 901 in the auxiliary tube 900 of the magnetic dispersion component 9, and the magnetic block 906 in the auxiliary tube 900 and the magnetic sheet 904 driven by the side base 903 form a reinforced magnetic field. S3: The first-stage pretreatment equipment 1 crushes the copper-zinc ore raw material. The crushed slurry is transported through the conveying pipe 2. The enhanced magnetic field in the auxiliary pipe 900 magnetically disperses the slurry clumps in the conveying pipe 2. S4: The slurry after magnetic dispersion is transported to the secondary cyclone coupler 3, the tertiary cyclone coupler 4 and the quaternary cyclone coupler 5 connected in sequence through the circulating material pipe 6 to complete the classification. The unqualified slurry is returned to the conveying pipeline 2 through the circulating material pipe 6 for repeated treatment until the classification standard is met. S5: When the magnetic sheet 904 is impacted, the spring 1002 undergoes elastic deformation to buffer the impact force, the transverse elastic linkage rod 1001 transmits the force and disperses the impact, and the corrugated side sealing surface 1003 seals the gap to prevent impurities from entering.

[0027] Working principle and usage process of this invention: The motor 7 is started, and the output of the motor 7 drives the vertical crushing shaft 8 to rotate. The vertical crushing shaft 8 drives the linkage vertical shaft 901 in the auxiliary tube 900 of the magnetic dispersion component 9 to rotate synchronously. The linkage vertical shaft 901 further drives the auxiliary tube 900 to rotate. The magnetic block 906 fixedly connected in the inner dividing groove 905 inside the auxiliary tube 900 generates a stable annular magnetic field as the auxiliary tube 900 rotates. At the same time, the outer shaft 902 fixedly connected to the outer end of the linkage vertical shaft 901 drives the magnetic sheet 904 fixedly connected to its outer end to rotate synchronously. During the rotation of the magnetic sheet 904, the annular magnetic field generated by the magnetic block 906 is superimposed to form a reinforced magnetic field. This reinforced magnetic field acts on the outside of the conveying pipe 2 to perform magnetic dispersion treatment on the copper-zinc ore slurry clumps conveyed in the conveying pipe 2, breaking up the slurry clumps and making the slurry particles evenly distributed, laying a favorable foundation for subsequent classification operations. During the rotation of the magnetic sheet 904 with the side base 903, if it is impacted by external impurities in the conveying pipe 2, the magnetic sheet 904 will slightly shift towards the side base 903, thereby squeezing the multiple springs 1002 elastically assembled between the side base 903 and the magnetic sheet 904. The multiple springs 1002 are vertically and equidistantly distributed. At this time, the springs 1002 undergo elastic deformation to buffer the impact force generated by the impurities. At the same time, the transverse elastic linkage rod 1001 assembled between two adjacent magnetic sheets 904 through the slot 1000 will transmit the force, causing the adjacent magnetic sheets 904 to swing slightly synchronously, dispersing the impact force on a single magnetic sheet 904 and preventing a single magnetic sheet 904 from being damaged due to excessive force. Meanwhile, the corrugated side sealing surface 1003, which is symmetrically fixedly connected on both sides between the side base 903 and the magnetic sheet 904, undergoes elastic deformation with the slight swing of the magnetic sheet 904, sealing the gap between the side base 903 and the magnetic sheet 904 and preventing impurities from entering between them and affecting the rotation of the components. While the magnetic dispersion component 9 performs magnetic dispersion, the pretreatment primary equipment 1 pre-processes and crushes the copper-zinc ore raw material. The crushed copper-zinc ore slurry is transported through the conveying pipe 2 fixedly connected to the lower end of the pretreatment primary equipment 1. After being treated by the enhanced magnetic field of the magnetic dispersion component 9, the slurry is transported to the secondary cyclone coupler 3, which is connected in sequence through the circulation pipe 6. In the secondary cyclone coupler 3, the slurry undergoes preliminary classification by centrifugal force, separating coarse ore particles from fine slurry. The fine slurry after preliminary classification is transported to the tertiary cyclone coupler through the circulation pipe 6. The first-stage cyclone coupler 4 and the third-stage cyclone coupler 4 perform secondary fine classification of the fine-grained slurry, further separating the mineral particles that meet the preset particle size requirements from the remaining slurry. The slurry after secondary classification continues to be transported to the fourth-stage cyclone coupler 5 through the circulating material pipe 6 to complete the final classification operation. During the classification process, the slurry that does not meet the preset particle size requirements is returned to the conveying pipe 2 through the circulating material pipe 6, and after being processed again by the magnetic dispersion component 9, it enters the multi-stage cyclone coupler for classification until all slurries meet the preset classification standards, thus completing the pre-selection and classification operation of copper-zinc ore.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A copper-zinc ore pre-selection and classification device based on multi-stage cyclone coupling, comprising a pre-treatment primary device (1) installed on a support assembly for pre-treating and crushing copper-zinc ore raw materials, separating the lumpy copper-zinc ore raw materials into a slurry state that facilitates subsequent classification processing; a conveying pipe (2) is fixedly connected to the lower end of the pre-treatment primary device (1) for conveying the copper-zinc ore slurry crushed by the pre-treatment primary device (1); a secondary cyclone coupler (3), a tertiary cyclone coupler (4), and a quaternary cyclone coupler (5) connected in sequence through a circulating material pipe (6) at the end of the conveying pipe (2) away from the pre-treatment primary device (1) for performing stepwise gradient classification of the slurry conveyed by the conveying pipe (2) to separate mineral particles of different sizes; a motor (7) is fixedly connected to the upper end of the pre-treatment primary device (1); and a vertical crushing shaft (8) extending into the pre-treatment primary device (1) is installed at the output end of the motor (7). The device is characterized in that: Also includes: The magnetic dispersion component (9) installed outside the conveying pipe (2) is used to magnetically disperse the slurry clumps in the conveying pipe (2) and break up the slurry clumps so that the slurry particles are evenly distributed. The magnetic dispersion component (9) includes an auxiliary tube (900), with a linkage vertical shaft (901) fixedly connected inside the auxiliary tube (900) and connected to the vertical crushing shaft (8). An outer shaft (902) is fixedly connected to the outer end of the linkage vertical shaft (901), and a plurality of side bases (903) distributed in a ring at equal intervals are fixedly connected to the outer end of the outer shaft (902). A magnetic sheet (904) is provided at the end of the side base (903) away from the linkage vertical shaft (901). A plurality of inner dividing grooves (905) are opened at the inner end of the auxiliary tube (900), and a magnetic block (906) is fixedly connected to the inner end of the inner dividing groove (905).

2. The copper-zinc ore pre-selection and classification device based on multi-stage vortex coupling according to claim 1, characterized in that: A spring-loaded assembly (10) is provided between two adjacent magnetic sheets (904). The spring-loaded assembly (10) includes a slot (1000) formed on the side of the magnetic sheet (904) away from the side base (903). A transverse elastic linkage rod (1001) is assembled between two adjacent slots (1000).

3. The copper-zinc ore pre-selection and classification device based on multi-stage vortex coupling according to claim 1, characterized in that: A plurality of springs (1002) are elastically assembled between the side base (903) and the magnetic sheet (904), and the plurality of springs (1002) are distributed vertically and equally at intervals.

4. The copper-zinc ore pre-selection and classification device based on multi-stage vortex coupling according to claim 1, characterized in that: The side base (903) and the magnetic sheet (904) are symmetrically fixed with corrugated side sealing surfaces (1003) on both sides, and the upper and lower ends of the side base (903) are sealed structures.

5. The copper-zinc ore pre-selection and classification device based on multi-stage vortex coupling according to claim 1, characterized in that: The magnetic sheet (904) has a sheet-like structure, and the magnetic block (906) has a cuboid structure. Both the magnetic sheet (904) and the magnetic block (906) are made of neodymium iron boron permanent magnets.

6. The copper-zinc ore pre-selection and classification device based on multi-stage vortex coupling according to claim 2, characterized in that: The transverse elastic linkage rod (1001) consists of a stainless steel rod and a compression spring sleeved on the outside of the stainless steel rod, and both ends are connected to the slot (1000) by threads.

7. The copper-zinc ore pre-selection and classification device based on multi-stage vortex coupling according to claim 3, characterized in that: The spring (1002) is a cylindrical helical compression spring made of spring steel, and its two ends are fixed to the side base (903) and the magnetic sheet (904) by welding.

8. The copper-zinc ore pre-selection and classification device based on multi-stage vortex coupling according to claim 4, characterized in that: The corrugated side sealing surface (1003) is made of wear-resistant nitrile rubber and has a corrugated structure.

9. The copper-zinc ore pre-selection and classification device based on multi-stage vortex coupling according to claim 1, characterized in that: The linkage vertical shaft (901) is a cylindrical shaft, and the linkage vertical shaft (901) and the outer main shaft (902) are fixedly connected by a flat key.

10. A pre-selection and classification method for copper-zinc ore based on multi-stage vortex coupling, applied to the copper-zinc ore pre-selection and classification device based on multi-stage vortex coupling as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: Start the motor (7), and the output end of the motor (7) drives the vertical crushing shaft (8) to rotate; S2: The vertical crushing shaft (8) drives the linkage vertical shaft (901) in the auxiliary tube (900) of the magnetic dispersion component (9), and the magnetic block (906) in the auxiliary tube (900) and the magnetic sheet (904) driven by the side base (903) form a reinforced magnetic field; S3: The first-stage pretreatment equipment (1) crushes the copper-zinc ore raw material. The crushed slurry is transported through the conveying pipeline (2). The enhanced magnetic field in the auxiliary pipe (900) performs magnetic dispersion treatment on the slurry in the conveying pipeline (2). S4: The slurry after magnetic dispersion is transported to the secondary cyclone coupler (3), the tertiary cyclone coupler (4) and the quaternary cyclone coupler (5) connected in sequence through the circulating material pipe (6) to complete the classification. The unqualified slurry is returned to the conveying pipeline (2) through the circulating material pipe (6) for repeated processing until the classification standard is met. S5: When the magnetic sheet (904) is impacted, the spring (1002) undergoes elastic deformation to buffer the impact force, the transverse elastic linkage rod (1001) transmits the force to disperse the impact, and the corrugated side sealing surface (1003) seals the gap to prevent impurities from entering.

Images