Copper smelting tailings non-ferrous metal extraction equipment

Abstract

This invention relates to a non-ferrous metal extraction device for copper smelting tailings slag, belonging to the field of non-ferrous metal extraction technology. The device includes a solid-liquid separation tank. The top of the tank is connected to a leaching solution feeding tank and a stirring and spraying mechanism via a rotary joint. The outer side of the tank is connected to a tailings slag feeding tank, a leaching residue storage tank, and a leaching solution collection tank. The stirring and spraying mechanism includes a hollow telescopic tube, an annular multi-hole side sprayer, an electric telescopic rod, and an adjustable agitator. The adjustable agitator is equipped with a rubber scraper that can conform to the inner wall of the tank. The hollow telescopic tube is driven to rotate by a drive assembly, working in conjunction with the annular multi-hole side sprayer to achieve uniform spraying of the leaching solution and thorough agitation of the material. This invention effectively solves the problems of uneven stirring and poor dispersion of the leaching solution spray in traditional equipment, improves the leaching and solid-liquid separation efficiency of highly agglomerated slurry, increases the non-ferrous metal recovery rate of tailings slag, has a reliable sealed structure, stable operation, and is suitable for the resource-based treatment of copper smelting tailings slag.

Description

Technical Field

[0001] This utility model relates to the field of non-ferrous metal extraction technology, and in particular to a non-ferrous metal extraction device for copper smelting tailings slag. Background Technology

[0002] Copper smelting tailings are rich in non-ferrous metals such as copper and zinc. Hydrometallurgical treatment is the mainstream process for its resource utilization. The core process includes tailings pretreatment, acid leaching, solid-liquid separation, metal recovery and tailings utilization.

[0003] Existing leaching and separation equipment generally suffers from defects such as uneven stirring, limited spray range of leachate, and poor dispersion when processing highly agglomerated slurry. This results in insufficient leaching of non-ferrous metals, poor solid-liquid separation effect, and low recovery rate of tailings slag resources, making it difficult to meet the high-efficiency separation requirements of highly agglomerated slurry.

[0004] Therefore, it is essential to provide a non-ferrous metal extraction device for copper smelting tailings slag to address the shortcomings of existing technologies. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a non-ferrous metal extraction device for copper smelting tailings slag, including a solid-liquid separation tank. A rotary joint is provided on the top of the solid-liquid separation tank. The rotary joint is movably connected to the leachate feed tank and the stirring and spraying mechanism. The leachate feed tank is fixedly installed above the solid-liquid separation tank. The stirring and spraying mechanism is placed inside the solid-liquid separation tank. The outer wall of the solid-liquid separation tank is connected to the tailings slag feed tank, the leachate storage tank and the leachate collection tank respectively. It has the characteristics of uniform agglomeration, crushing and stirring, sufficient leachate spraying and high solid-liquid separation efficiency, and is suitable for leaching and separation operations of highly agglomerated slurry.

[0006] The above-mentioned objectives of this utility model are achieved through the following technical means.

[0007] A non-ferrous metal extraction device for copper smelting tailings slag is provided, including a solid-liquid separation tank. A rotary joint is installed on the top of the solid-liquid separation tank, which is movably connected to a leachate feed tank and a stirring and spraying mechanism. The leachate feed tank is fixedly installed above the solid-liquid separation tank, and the stirring and spraying mechanism is placed inside the solid-liquid separation tank. The outer wall of the solid-liquid separation tank is connected to a tailings slag feed tank, a leaching residue storage tank, and a leachate collection tank, respectively. The overall layout is compact, the material flow is smooth, and continuous leaching and solid-liquid separation of tailings slag can be realized, thereby improving the processing efficiency.

[0008] The agitation and spraying mechanism includes a hollow telescopic tube. The top of the hollow telescopic tube is connected to the leachate feed tank pipeline via a rotary joint. The hollow telescopic tube is arranged along the central axis inside the solid-liquid separation tank. The bottom of the hollow telescopic tube is connected to an annular multi-hole side sprayer. An electric telescopic rod is vertically installed between the bottom of the annular multi-hole side sprayer and the bottom of the solid-liquid separation tank. The top of the electric telescopic rod is fixedly installed at the bottom center of the annular multi-hole side sprayer. The bottom of the electric telescopic rod is movably installed to the bottom of the solid-liquid separation tank via a waterproof bearing. The outer sealing sleeve of the electric telescopic rod is equipped with a corrugated tube-type protective sleeve. Multiple sets of adjustable agitators are installed at equal angles along the circumference of the lower end face of the annular multi-hole side sprayer. The hollow telescopic tube can rotate and rise and fall, and together with the annular multi-hole side sprayer, it can achieve uniform spraying of leachate throughout the entire space, adapting to different material level conditions.

[0009] Each set of adjustable agitators includes a connecting rod and a stirring rod. One end of the connecting rod is fixedly connected to the bottom of the annular multi-hole side sprayer, and the other end of the connecting rod is hinged to one end of the stirring rod through a waterproof bearing. The other end of the stirring rod is equipped with a rubber scraper. The rubber scraper flexibly fits against the inner wall of the solid-liquid separation tank, and the stirring and scraping are carried out simultaneously. This can not only fully stir the highly agglomerated slurry, but also remove the material adhering to the inner wall in real time, avoiding scaling and material loss.

[0010] The solid-liquid separation tank is horizontally fixed inside, and the protective baffle and the top inner wall of the solid-liquid separation tank form an isolation cavity. The hollow telescopic pipe passes through the bearing and is movably assembled on the protective baffle. The section of the hollow telescopic pipe located in the isolation cavity is equipped with a drive component. The isolation cavity can protect the transmission components from the corrosion of leachate and slurry, and improve the stability and service life of the equipment.

[0011] The drive assembly includes an annular support frame fixed on the hollow telescopic tube. An external gear ring is installed on the outer ring of the annular support frame. The external gear ring meshes with a gear, which is coaxially connected to a motor. The motor is fixedly installed on the inner wall of the isolation chamber. The gear transmission is smooth and reliable, and can accurately drive the hollow telescopic tube to rotate, ensuring uniform mixing and spraying.

[0012] The solid-liquid separation tank is equipped with a heating jacket, and electric heating wires are arranged inside the heating jacket. The temperature of the slurry in the tank can be adjusted according to the requirements of the copper extraction process from tailings slag, matching the optimal leaching temperature range and accelerating the non-ferrous metal extraction reaction rate.

[0013] The solid-liquid separation tank has an inlet, a leachate outlet, and a leaching residue outlet. A filter screen is installed at the leachate outlet. The leachate outlet and the leaching residue outlet are connected to one-way valves through pipelines. Each one-way valve is connected to a suction pump through a pipeline. The two suction pumps are respectively connected to the leaching residue storage tank and the leachate collection tank. Suction combined with filtration achieves rapid solid-liquid separation. The one-way valves prevent backflow, resulting in good separation effect and high collection efficiency.

[0014] The hollow expansion tube is equipped with an inner corrugated pipe lining. The hollow expansion tube and the inner corrugated pipe lining form an inner and outer nested sealed pipeline structure. Dynamic sealing rings are provided between adjacent pipe sections of the hollow expansion tube. The double sealing structure ensures no leakage during the expansion and contraction process and guarantees the safe and stable transportation of leachate.

[0015] The annular porous side sprayer is a hollow disc-shaped joint with multiple holes on the side. The internal flow channel of the annular porous side sprayer is connected to the inner cavity of the inner corrugated pipe. The side spraying method has a large coverage area and good dispersion, which allows the leachate to fully contact the slurry and significantly improves the leaching rate of non-ferrous metals.

[0016] This invention solves the problem of leaching highly agglomerated slurry by combining rotary lifting spraying, adjustable stirring and scraping, sealed transmission, and rapid solid-liquid separation structure. It significantly improves the leaching rate and separation efficiency of non-ferrous metals, reduces equipment failure rate and material loss, and realizes the efficient resource utilization of copper smelting tailings slag. Attached Figure Description

[0017] The present invention will be further described with reference to the accompanying drawings, but the content of the drawings does not constitute any limitation on the present invention.

[0018] Figure 1 This is a three-dimensional view of the overall structure of a non-ferrous metal extraction device for copper smelting tailings slag, which is based on this utility model.

[0019] Figure 2 This is a partial three-dimensional view of a non-ferrous metal extraction device for copper smelting tailings slag, according to this utility model.

[0020] Figure 3 This is a partial three-dimensional view of a non-ferrous metal extraction device for copper smelting tailings slag, according to this utility model.

[0021] from Figures 1 to 3 Including: 1. Solid-liquid separation tank; 2. Leachate feed tank; 3. Agitating spraying mechanism; 4. Tailings feed tank; 5. Leach residue storage tank; 6. Leachate collection tank; 7. Hollow expansion tube; 8. Annular multi-hole side sprayer; 9. Electric telescopic pole; 10. Corrugated pipe type protective sleeve; 11. Adjustable agitator; 12. Connecting rod; 13. Stirring rod; 14. Rubber scraper; 15. Protective partition; 16. Isolation cavity; 17. Driver components; 18. Circular support frame; 19. External gear ring; 20. Gear; 21. Electric motor; 22. Filter screen; 23. Check valve; 24. Suction pump; 25. Corrugated pipe with inner lining. Detailed Implementation

[0022] The present invention will be further described in conjunction with the following embodiments.

[0023] Example 1.

[0024] like Figure 1-3 As shown, a non-ferrous metal extraction device for copper smelting tailings includes a solid-liquid separation tank 1. A rotary joint is provided on the top of the solid-liquid separation tank 1. The rotary joint is movably connected to a leachate feed tank 2 and a stirring spraying mechanism 3. The leachate feed tank 2 is fixedly installed above the solid-liquid separation tank 1.

[0025] The stirring and spraying mechanism 3 is placed inside the solid-liquid separation tank 1. The outer wall of the solid-liquid separation tank 1 is connected to the tailings slag feeding tank 4, the leaching residue storage tank 5, and the leachate collection tank 6, respectively. The tanks cooperate with each other to complete the material feeding, leaching reaction, and finished product and waste residue storage operations. The overall structure has a high degree of integration, which is convenient for integrated continuous treatment of tailings slag.

[0026] The stirring spraying mechanism 3 includes a hollow telescopic tube 7. The top end of the hollow telescopic tube 7 is connected to the pipeline of the leachate feeding tank 2 through a rotary joint. The hollow telescopic tube 7 is arranged along the central axis inside the solid-liquid separation tank 1. The bottom end of the hollow telescopic tube 7 is connected to the annular multi-hole side sprayer 8.

[0027] An electric telescopic rod 9 is vertically installed between the bottom of the annular multi-hole side sprayer 8 and the bottom of the solid-liquid separation tank 1. The outer sealing sleeve of the electric telescopic rod 9 is equipped with a corrugated protective sleeve 10. The corrugated protective sleeve 10 can completely isolate the corrosive slurry and prevent the electric telescopic rod 9 from rusting, jamming and other failures. Three sets of adjustable agitators 11 are installed at equal angles along the circumference of the lower end face of the annular multi-hole side sprayer 8, which can simultaneously complete the spraying of the chemical solution and the stirring of the slurry.

[0028] Each adjustable agitator 11 includes a connecting rod 12 and a stirring rod 13. One end of the connecting rod 12 is fixedly connected to the bottom of the annular multi-hole side sprayer 8, and the other end of the connecting rod 12 is hinged to one end of the stirring rod 13 through a waterproof bearing. The other end of the stirring rod 13 is equipped with a rubber scraper 14, which flexibly fits against the inner wall of the solid-liquid separation tank 1. The adjustable agitator 11 adopts a hinged structure design. The stirring rod 13 can adjust the hinge tilt angle autonomously according to the speed of the motor 21 by means of the centrifugal force generated by the rotation, so as to adapt to different slurry concentrations and stirring conditions. At the same time, the rubber scraper 14 can continuously scrape off the adhering material on the inner wall of the tank during the stirring process, so as to avoid the material from accumulating and clumping on the wall and avoid the problem that the material clumping on the wall is difficult to participate in the leaching reaction.

[0029] A horizontally fixed protective partition 15 is installed inside the solid-liquid separation tank 1. The protective partition 15 and the inner wall of the top of the solid-liquid separation tank 1 form an isolation cavity 16. A hollow telescopic pipe 7 is movably mounted on the protective partition 15 through a bearing. A drive assembly 17 is provided on the pipe section of the hollow telescopic pipe 7 located in the isolation cavity 16. The protective partition 15 isolates the transmission structure from the lower slurry operation area, effectively protecting the precision parts inside the drive assembly 17, reducing equipment wear, and extending the service life of the equipment.

[0030] The drive assembly 17 includes an annular support frame 18 fixed on the hollow telescopic tube 7. An external gear ring 19 is installed on the outer ring of the annular support frame 18. The external gear ring 19 meshes with a transmission gear 20. The gear 20 is coaxially connected to a motor 21. The motor 21 is fixedly installed on the inner wall of the isolation chamber 16. During operation, the motor 21 drives the gear transmission structure, which drives the entire stirring spraying mechanism 3 to rotate at a uniform speed, providing power support for the spraying of the liquid and the stirring of the material. The transmission structure operates stably and has strong sealing.

[0031] The solid-liquid separation tank 1 is equipped with a heating jacket, and heating wires are arranged inside the heating jacket. The heating wires are electrically connected to the equipment control system. The operator can precisely adjust the heating power and operating temperature through the control system to match the optimal leaching temperature conditions under different working conditions and accelerate the non-ferrous metal extraction reaction rate.

[0032] The solid-liquid separation tank 1 has an inlet, a leachate outlet, and a leaching residue outlet. A filter screen 22 is installed at the leachate outlet to effectively intercept fine solid waste and improve the purity of the leachate. The leachate outlet and the leaching residue outlet are respectively connected to one-way valves 23 through pipelines. Each one-way valve 23 is connected to a suction pump 24 through a pipeline. The two suction pumps 24 are respectively connected to the leaching residue storage tank 5 and the leachate collection tank 6. The discharge operation is completed by relying on the negative pressure of the suction pumps 24. With the help of the one-way valves 23, the material backflow can be effectively prevented and the discharge operation can be carried out in an orderly manner.

[0033] The hollow telescopic pipe 7 is equipped with an inner corrugated pipe 25 on its inner wall. The hollow telescopic pipe 7 and the inner corrugated pipe 25 form an inner and outer nested sealed pipeline structure. Dynamic sealing rings are provided between adjacent pipe sections of the hollow telescopic pipe 7. The double sealing structure can effectively prevent leakage of leachate during transportation and telescopic process, and is suitable for rotation and lifting operation conditions. The annular multi-hole side sprayer 8 is a hollow disc-shaped joint with multiple holes on the side. The internal flow channel of the annular multi-hole side sprayer 8 is connected to the inner cavity of the inner corrugated pipe 25 to ensure that the leachate is smoothly transported to the inside of the spray structure.

[0034] In the actual operation of this utility model, the workers first transport the copper smelting tailings to be treated through the tailings feed tank 4 to the solid-liquid separation tank 1 through the feed inlet. After the material is filled, the feed inlet is closed to maintain a sealed environment inside the tank. Then, the leachate is discharged from the leachate feed tank 2 and passes through the top rotary joint, the hollow telescopic pipe 7 and the inner corrugated pipe 25 in sequence. Finally, it is transported to the interior of the annular multi-hole side sprayer 8 and is sprayed outward from the spray holes evenly opened on the side of the sprayer, so that the leachate comes into full contact with the tailings material.

[0035] During operation, the motor 21 inside the isolation chamber 16 drives the outer gear ring 19 to rotate through the meshing of the coaxial gear 20, which in turn drives the hollow telescopic tube 7 and the annular multi-hole side sprayer 8 to rotate circumferentially, and simultaneously drives the three sets of adjustable agitators 11 at the bottom to rotate and stir the slurry in the tank.

[0036] The vertically arranged electric telescopic rod 9 can drive the annular multi-hole side sprayer 8 to move up and down reciprocally. Combined with the rotation and stirring, it forms a compound stirring mode, realizing stirring without dead corners inside the tank, accelerating the reaction rate of leachate and tailings. During the entire stirring process, the rubber scraper 14 at the end of the adjustable agitator 11 scrapes off the slurry and agglomerated materials adhering to the inner wall of the solid-liquid separation tank 1 in real time, improving the phenomenon of material sticking to the wall and accumulating.

[0037] After the non-ferrous metal leaching process in the solid-liquid separation tank 1 is completed, the slurry is allowed to stand to achieve initial solid-liquid separation. First, the one-way valve 23 and the suction pump 24 of the corresponding pipeline of the leaching solution collection tank 6 are opened, so that the metal-containing leaching solution is filtered and impurities are removed by the filter screen 22 and then transported to the inside of the leaching solution collection tank 6 for storage. After the leaching solution is extracted, the pipeline is switched, and then the one-way valve 23 and the suction pump 24 of the corresponding pipeline of the leaching residue storage tank 5 are opened to transport the solid leaching residue remaining at the bottom of the tank to the leaching residue storage tank 5. In this way, the efficient leaching extraction and solid-liquid separation of non-ferrous metals in the tailings slag are completed.

[0038] This invention utilizes a combination of rotating spraying, lifting and stirring, inner wall scraping, and a closed transmission system to ensure that the leachate and tailings slag come into full contact and undergo an extraction reaction. It efficiently breaks up material agglomerates and prevents material from sticking to the walls and accumulating. Simultaneously, the isolated closed transmission structure provides comprehensive protection for the transmission components, reducing equipment maintenance costs. Compared to traditional extraction equipment, this device offers a more complete leaching reaction, faster solid-liquid separation, and stronger overall operational stability. It significantly improves the recovery rate of non-ferrous metals in copper smelting tailings slag, enhances the overall treatment efficiency of tailings slag, and is suitable for large-scale copper smelting tailings slag treatment operations.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit the scope of protection of this utility model. Although this utility model 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 this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A non-ferrous metal extraction device for copper smelting tailings slag, characterized in that: The system includes a solid-liquid separation tank. A rotary joint at the top of the solid-liquid separation tank is movably connected to a leachate feed tank and a stirring spraying mechanism. The leachate feed tank is fixedly installed above the solid-liquid separation tank. The stirring spraying mechanism is located inside the solid-liquid separation tank. The outer wall of the solid-liquid separation tank is connected to a tailings feed tank, a leachate storage tank, and a leachate collection tank. The agitation and spraying mechanism includes a hollow telescopic tube. The top end of the hollow telescopic tube is connected to the leachate feed tank pipeline through the rotary joint. The hollow telescopic tube is arranged along the internal central axis of the solid-liquid separation tank. The bottom end of the hollow telescopic tube is connected to an annular multi-hole side sprayer. An electric telescopic rod is vertically arranged between the bottom of the annular multi-hole side sprayer and the bottom of the solid-liquid separation tank. The outer sealing sleeve of the electric telescopic rod is provided with a corrugated protective sleeve. Multiple sets of adjustable agitators are assembled at equal angles along the circumference on the lower end face of the annular multi-hole side sprayer. Each set of adjustable agitators includes a connecting rod and a stirring rod. One end of the connecting rod is fixedly connected to the bottom of the annular multi-hole side sprayer, and the other end of the connecting rod is hinged to one end of the stirring rod through a waterproof bearing. The other end of the stirring rod is equipped with a rubber scraper, which flexibly fits against the inner wall of the solid-liquid separation tank.

2. The non-ferrous metal extraction equipment for copper smelting tailings slag according to claim 1, characterized in that: The solid-liquid separation tank is horizontally fixed inside, and the protective partition and the top inner wall of the solid-liquid separation tank form an isolation cavity. The hollow telescopic tube is movably assembled on the protective partition through a bearing, and a drive assembly is provided on the tube section of the hollow telescopic tube located in the isolation cavity. The drive assembly includes an annular support frame fixedly mounted on the hollow telescopic tube. An external gear ring is installed on the outer ring of the annular support frame. The external gear ring meshes with a gear, and the gear is coaxially connected to a motor. The motor is fixedly installed on the inner wall of the isolation cavity.

3. The non-ferrous metal extraction equipment for copper smelting tailings slag according to claim 2, characterized in that: The solid-liquid separation tank has an inlet, a leachate outlet, and a leaching residue outlet. A filter screen is installed at the leachate outlet. The leachate outlet and the leaching residue outlet are respectively connected to one-way valves through pipelines. Each one-way valve is connected to a suction pump through a pipeline on its outer side. The two suction pumps are respectively connected to the leaching residue storage tank and the leachate collection tank.

4. The non-ferrous metal extraction equipment for copper smelting tailings slag according to claim 3, characterized in that: The hollow expansion tube is equipped with an inner corrugated pipe on its inner wall. The hollow expansion tube and the inner corrugated pipe form an inner and outer nested sealed pipeline structure. A dynamic sealing ring is provided between adjacent pipe sections of the hollow expansion tube.

5. The non-ferrous metal extraction equipment for copper smelting tailings slag according to claim 4, characterized in that: The annular porous side sprayer is a hollow disc-shaped connector with multiple holes on the side, and the internal flow channel of the annular porous side sprayer is connected to the inner cavity of the inner corrugated pipe.

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