Impurity removal device in hydrometallurgical copper smelting process

Abstract

This utility model relates to the technical field of impurity removal in smelting, and particularly to an impurity removal device in the process of hydrometallurgical copper smelting. It includes: a main impurity removal body with a feed inlet at the top and a discharge outlet at the bottom; the interior of the main impurity removal body sequentially and interconnected along the material flow direction, comprising a primary filtration chamber, a reaction purification chamber, a sedimentation separation chamber, and a deep adsorption chamber; a transfer pipe installed at the outlet of the sedimentation separation chamber and the inlet of the deep adsorption chamber, with a control valve installed on the transfer pipe; a filter screen mechanism inclinedly disposed inside the primary filtration chamber, with an impurity discharge outlet connected to its lowest end; a reagent addition pipe located at the top of the reaction purification chamber, which also contains a stirring mechanism; a conveying mechanism installed inside the sedimentation separation chamber, with a slag discharge valve at the tail end of the conveying mechanism; and a filtration mechanism installed inside the deep adsorption chamber. The process is tightly integrated, reducing equipment investment and floor space requirements.

Description

Technical Field

[0001] This utility model relates to the technical field of impurity removal in smelting, and in particular to an impurity removal device in the process of hydrometallurgical copper smelting. Background Technology

[0002] Hydrometallurgy, as an important modern process for the extraction and purification of non-ferrous metals, is widely used in the production of metals such as copper, zinc, and nickel. In the hydrometallurgical copper smelting process, low-grade copper ore or copper-containing waste is usually used as raw material. Copper is extracted and purified through steps such as leaching, purification, and electrolytic deposition. Among these steps, solution purification is the key to determining the quality of the final copper product. Its main task is to remove solid particles, iron, arsenic, antimony, lead, zinc, and other harmful impurity ions mixed in the raw material solution, preventing them from depositing on the cathode copper surface during subsequent electrolysis, which would reduce product purity or electrolysis efficiency.

[0003] Currently, conventional wet copper smelting impurity removal processes mostly adopt a single processing method, with each processing unit set up independently. The process is not closely connected, and materials need to be transferred multiple times, which not only increases equipment investment and floor space, but also easily causes secondary mixing of impurities. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a purification device for the wet copper smelting process that features a tightly integrated process and reduces equipment investment and floor space requirements.

[0005] The present invention relates to a device for removing impurities during the wet copper smelting process, comprising: The impurity removal body has a feed inlet at the top and a discharge outlet at the bottom. Inside the impurity removal body, along the material flow direction, there are interconnected primary filtration chamber, reaction purification chamber, sedimentation separation chamber and deep adsorption chamber. A transfer pipe is installed at the liquid outlet of the sedimentation separation chamber and the liquid inlet of the deep adsorption chamber, and a control valve is installed on the transfer pipe. The filter mechanism is inclinedly installed inside the primary filtration chamber, and the lowest end of the filter mechanism is connected to the impurity discharge port. The reagent addition tube is located at the top of the reaction purification chamber, which is also equipped with a stirring mechanism. The conveying mechanism is installed inside the settling and separation chamber, and the settling and separation chamber is equipped with a slag discharge valve at the tail end of the conveying mechanism; The filtration mechanism is installed inside the deep adsorption chamber.

[0006] As a preferred embodiment of this utility model, the filter mechanism includes 3-5 layers of stainless steel filter screens with increasing mesh counts, the mesh count difference between two adjacent layers of stainless steel filter screens is 50-100 meshes, and the tilt angle of the filter mechanism is 15°-30°.

[0007] As a preferred embodiment of this utility model, the filter mechanism is connected to the primary filtration chamber by a slotted sliding connection.

[0008] As a preferred embodiment of this utility model, the stirring mechanism is as follows: The drive motor is installed in the reaction purification chamber of the impurity removal body; The stirring shaft is installed at the output end of the drive motor. The stirring shaft is rotatably connected to the through hole of the impurity removal body, and the stirring paddle is provided on the stirring shaft.

[0009] As a preferred embodiment of this utility model, the filtration mechanism is provided with a nano-ceramic membrane layer, a modified activated carbon layer and an ion exchange resin layer in sequence.

[0010] As a preferred embodiment of this utility model, the pore size of the nano-ceramic membrane layer is 50-100nm, the thickness of the modified activated carbon layer is 10-15cm, and the ion exchange resin layer is filled with chelating resin particles.

[0011] As a preferred embodiment of this utility model, a first delivery pump is provided between the primary filtration chamber and the reaction purification chamber, and a second delivery pump is provided between the reaction purification chamber and the sedimentation separation chamber. Both the first delivery pump and the second delivery pump are corrosion-resistant diaphragm pumps.

[0012] As a preferred embodiment of this utility model, the conveying mechanism includes: The power motor is installed in the settling and separation chamber of the impurity removal body; The drive shaft is installed at the output end of the power motor and is rotatably connected to the inner hole of the impurity removal body; The spiral conveyor blade is mounted on the drive shaft via a mounting bracket, and the spiral conveyor blade is slidably connected to the settling and separation chamber.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: The primary filtration chamber, reaction purification chamber, sedimentation separation chamber and deep adsorption chamber inside the impurity removal body are connected sequentially along the material flow direction to form a continuous impurity removal process. The inclined filter screen mechanism can trap large solid particles. The impurities slide out automatically through the impurity discharge port under the action of gravity, achieving preliminary purification. The reagent addition pipe at the top of the reaction purification chamber adds the impurity removal agent, and the stirring mechanism makes the agent react fully with the solution, converting soluble impurities into precipitates. The conveying mechanism in the sedimentation separation chamber transports the precipitates to the slag discharge valve for discharge, reducing sedimentation accumulation. The filtration mechanism in the deep adsorption chamber further removes small suspended solids and residual ions, improving the purity of the solution. The overall structure realizes multi-stage impurity removal from coarse to fine, improves the thoroughness of impurity removal, ensures the quality of wet copper smelting products, and enhances the impurity removal effect of the device. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the impurity removal device in the wet copper smelting process of this utility model at the first angle; Figure 2 This is a schematic diagram of the impurity removal device in the wet copper smelting process of this utility model at the second angle; Figure 3 This is a schematic diagram of the impurity removal device in the wet copper smelting process of this utility model, viewed in cross-section of the impurity removal body; Figure 4 This is a schematic diagram of the conveying mechanism of the impurity removal device in the wet copper smelting process of this utility model; Figure 5 This utility model relates to a device for removing impurities during the wet copper smelting process. Figure 3 Enlarged structural diagram of section A in the middle; The attached diagram is labeled as follows: 1. Purification body; 2. Feed inlet; 3. Discharge outlet; 4. Filter screen mechanism; 5. Outlet; 6. Reagent addition pipe; 7. Stirring mechanism; 71. Drive motor; 72. Stirring shaft; 73. Stirring paddle; 8. Conveying mechanism; 81. Power motor; 82. Drive shaft; 83. Spiral conveyor blade; 84. Mounting frame; 9. Slag discharge valve; 10. Filtering mechanism; 101. Nano-ceramic membrane layer; 102. Modified activated carbon layer; 103. Ion exchange resin layer; 11. First conveying pump; 12. Second conveying pump. Detailed Implementation

[0015] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0017] like Figures 1 to 5 As shown, this embodiment provides a purification device for the hydrometallurgical copper smelting process, including: The impurity removal body 1 has a feed inlet 2 at the top and a discharge outlet 3 at the bottom. Inside the impurity removal body 1, a primary filtration chamber, a reaction purification chamber, a sedimentation separation chamber, and a deep adsorption chamber are arranged sequentially along the material flow direction. A transfer pipe is installed at the liquid outlet of the sedimentation separation chamber and the liquid inlet of the deep adsorption chamber, and a control valve is installed on the transfer pipe. The filter mechanism 4 is used to remove large solid particles. It is inclined and installed inside the primary filtration chamber. The lowest end of the filter mechanism 4 is connected to the impurity discharge port 5, and the impurities slide out automatically under the action of gravity. The reagent addition tube 6 is located at the top of the reaction purification chamber. The reaction purification chamber is also equipped with a stirring mechanism 7. The reagent addition tube 6 and the stirring mechanism 7 work together to achieve the chemical transformation and precipitation of soluble impurities in the solution. The conveying mechanism 8 is installed inside the settling and separation chamber, and the settling and separation chamber is equipped with a slag discharge valve 9 at the tail end of the conveying mechanism 8. The filter unit 10 is installed inside the deep adsorption chamber to remove tiny suspended solids and residual ions; In this embodiment, the primary filtration chamber, reaction purification chamber, sedimentation separation chamber, and deep adsorption chamber inside the impurity removal body 1 are sequentially connected along the material flow direction to form a continuous impurity removal process. The inclined filter screen mechanism 4 can trap large solid particles. The impurities slide out automatically through the impurity discharge port 5 under the action of gravity, achieving preliminary purification. The reagent addition pipe 6 at the top of the reaction purification chamber adds the impurity removal agent, and the stirring mechanism 7 makes the agent react fully with the solution, converting soluble impurities into precipitates. The conveying mechanism 8 in the sedimentation separation chamber transports the precipitates to the slag discharge valve 9 for discharge, reducing sedimentation accumulation. The filtration mechanism 10 in the deep adsorption chamber further removes small suspended solids and residual ions, improving the purity of the solution. The overall structure realizes multi-stage impurity removal from coarse to fine, improving the thoroughness of impurity removal, ensuring the quality of wet copper smelting products, and enhancing the impurity removal effect of the device.

[0018] As a preferred embodiment of the above technical solution, such as Figure 3 As shown, the filter mechanism 4 includes 3-5 layers of stainless steel filter screens with increasing mesh size. The mesh size difference between two adjacent layers of stainless steel filter screens is 50-100 meshes, and the tilt angle of the filter mechanism 4 is 15°-30°. The filter mechanism 4 is connected to the primary filter chamber by a slotted sliding connection. In this embodiment, the filter mechanism 4 uses 3-5 layers of stainless steel filter screen with increasing mesh size, and the mesh size difference between adjacent layers is 50-100 mesh. Through step-by-step filtration, large particles of different sizes are accurately intercepted, improving the classification effect of primary filtration. The tilt angle of 15°-30° ensures that impurities automatically slide to the impurity discharge port 5 under the action of gravity, avoiding filter screen blockage, and also ensures that the solution has sufficient filtration time. The slotted sliding connection makes the filter mechanism 4 easy to disassemble, clean and replace, reducing maintenance difficulty. The stainless steel material improves the wear resistance and corrosion resistance of the filter screen, making it suitable for the complex working conditions of wet copper smelting. The overall structure enhances the stability of primary filtration.

[0019] As a preferred embodiment of the above technical solution, such as Figures 1 to 3 As shown, stirring mechanism 7: The drive motor 71 is installed in the reaction and purification chamber of the impurity removal body 1; A stirring shaft 72 is installed at the output end of a drive motor 71. The stirring shaft 72 is rotatably connected to the through hole of the impurity removal body 1. A stirring paddle 73 is provided on the stirring shaft 72. In this embodiment, the drive motor 71 is installed in the reaction purification chamber of the impurity removal body 1. The stirring shaft 72 at its output end drives the stirring paddle 73 to rotate, which can quickly stir the solution, so that the impurity removal agent added by the agent addition tube 6 is in uniform contact with the solution, accelerates the chemical transformation reaction of soluble impurities, and promotes precipitation. The stirring shaft 72 is rotatably connected to the through hole of the impurity removal body 1 to ensure stable transmission. The stirring action of the stirring paddle 73 avoids local accumulation of the agent, improves the uniformity of the reaction, and lays the foundation for the removal of impurities in the subsequent sedimentation separation chamber.

[0020] As a preferred embodiment of the above technical solution, such as Figures 3 to 5 As shown, the filtration mechanism 10 is provided with a nano-ceramic membrane layer 101, a modified activated carbon layer 102, and an ion exchange resin layer 103 in sequence. The nano-ceramic membrane 101 has a pore size of 50-100 nm, the modified activated carbon layer 102 has a thickness of 10-15 cm, and the ion exchange resin layer 103 is filled with chelating resin particles. In this embodiment, the 50-100nm pore size nano-ceramic membrane layer 101 can efficiently trap tiny suspended matter and colloidal impurities, the 10-15cm thick modified activated carbon layer 102 removes organic impurities and pigments from the solution through adsorption, and the chelating resin particles of the ion exchange resin layer 103 specifically adsorb residual metal ions. The three work together to achieve comprehensive purification from particulate matter to the ion level. Each layer has a clear division of labor and progresses step by step, which greatly improves the purity of the solution and ensures the quality of wet copper smelting products.

[0021] As a preferred embodiment of the above technical solution, such as Figures 1 to 3 As shown, a first delivery pump 11 is provided between the primary filtration chamber and the reaction purification chamber, and a second delivery pump 12 is provided between the reaction purification chamber and the sedimentation separation chamber. Both the first delivery pump 11 and the second delivery pump 12 are corrosion-resistant diaphragm pumps. In this embodiment, the first transfer pump 11 between the primary filtration chamber and the reaction purification chamber, and the second transfer pump 12 between the reaction purification chamber and the sedimentation separation chamber, are both corrosion-resistant diaphragm pumps. These pumps provide stable power for the flow of the solution between the chambers, ensuring a continuous and smooth impurity removal process. The corrosion-resistant diaphragm pumps can effectively resist corrosive media in the wet copper smelting solution, preventing pump damage due to corrosion and extending the service life of the equipment. At the same time, the stable delivery characteristics of the diaphragm pumps will not disturb the formed sediment, ensuring that the impurity removal function of each chamber is performed in an orderly manner and enhancing the overall stability of the device operation.

[0022] As a preferred embodiment of the above technical solution, such as Figures 1 to 4 As shown, the conveying mechanism 8 includes: The power motor 81 is installed in the settling and separation chamber of the impurity removal body 1; The drive shaft 82 is mounted on the output end of the power motor 81, and the drive shaft 82 is rotatably connected to the inner hole of the impurity removal body 1. The spiral conveyor blade 83 is mounted on the drive shaft 82 via the mounting bracket 84, and the spiral conveyor blade 83 is slidably connected to the sedimentation separation chamber. In this embodiment, the power motor 81 is installed in the settling separation chamber of the impurity removal body 1. The drive shaft 82 at its output end drives the spiral conveyor blade 83 to rotate. The spiral conveyor blade 83 is slidably connected to the settling separation chamber, which can smoothly push the settling impurities along the length of the chamber to the slag discharge valve 9, avoiding the accumulation and blockage of impurities in the chamber. The mounting bracket 84 ensures that the spiral conveyor blade 83 and the drive shaft 82 are firmly connected and the transmission is reliable. The continuous power provided by the power motor 81 makes the impurity conveying continuous and efficient. With the help of the slag discharge valve 9, the impurities are discharged in time, ensuring the separation effect of the settling separation chamber.

[0023] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. 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 solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A device for removing impurities in a wet copper smelting process, characterized in that include: The impurity removal body (1) has a feed inlet (2) at the top and a discharge outlet (3) at the bottom. The impurity removal body (1) has a primary filtration chamber, a reaction purification chamber, a sedimentation separation chamber and a deep adsorption chamber connected to each other in sequence along the material flow direction. A transfer pipe is installed at the liquid outlet of the sedimentation separation chamber and the liquid inlet of the deep adsorption chamber, and a control valve is installed on the transfer pipe. The filter mechanism (4) is inclinedly arranged inside the primary filtration chamber, and the lowest end of the filter mechanism (4) is connected to the impurity discharge port (5). A reagent addition tube (6) is set at the top of the reaction purification chamber, and a stirring mechanism (7) is also set inside the reaction purification chamber. The conveying mechanism (8) is installed inside the settling separation chamber, and the settling separation chamber is equipped with a slag discharge valve (9) at the tail end of the conveying mechanism (8). The filter mechanism (10) is installed inside the deep adsorption chamber.

2. The device for removing impurities in a wet copper smelting process according to claim 1, characterized in that, The filter mechanism (4) includes 3-5 layers of stainless steel filter screens with increasing mesh counts. The mesh count difference between two adjacent layers of stainless steel filter screens is 50-100 meshes. The tilt angle of the filter mechanism (4) is 15°-30°.

3. The device for removing impurities in a wet copper smelting process according to claim 2, characterized in that, The filter mechanism (4) is connected to the primary filter chamber by a slotted sliding connection.

4. The apparatus for removing impurities in a wet copper smelting process according to claim 1, wherein The stirring mechanism (7): A drive motor (71) is installed in the reaction purification chamber section of the impurity removal body (1); A stirring shaft (72) is installed at the output end of the drive motor (71). The stirring shaft (72) is rotatably connected to the through hole of the impurity removal body (1). A stirring paddle (73) is provided on the stirring shaft (72).

5. The apparatus for removing impurities in a wet copper smelting process according to claim 1, wherein The filtration mechanism (10) is provided with a nano-ceramic membrane layer (101), a modified activated carbon layer (102), and an ion exchange resin layer (103) in sequence.

6. A device for removing impurities in a wet copper smelting process according to claim 5, characterized in that The nano-ceramic membrane layer (101) has a pore size of 50-100 nm, the modified activated carbon layer (102) has a thickness of 10-15 cm, and the ion exchange resin layer (103) is filled with chelating resin particles.

7. The impurity removal device in the hydrometallurgical copper smelting process as described in claim 1, characterized in that, A first delivery pump (11) is provided between the primary filtration chamber and the reaction purification chamber, and a second delivery pump (12) is provided between the reaction purification chamber and the sedimentation separation chamber. Both the first delivery pump (11) and the second delivery pump (12) are corrosion-resistant diaphragm pumps.

8. The apparatus for removing impurities in a wet copper smelting process according to claim 1, wherein The conveying mechanism (8) includes: A power motor (81) is installed in the settling and separation chamber of the impurity removal body (1); A drive shaft (82) is installed at the output end of the power motor (81), and the drive shaft (82) is rotatably connected to the inner hole of the impurity removal body (1); The spiral conveyor blade (83) is mounted on the drive shaft (82) via a mounting bracket (84), and the spiral conveyor blade (83) is slidably connected to the sedimentation separation chamber.

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