Multistage sedimentation solution tank

Abstract

The utility model discloses a multistage sedimentation solution tank, which is characterized in that a tank body is a square tank body, a cross-shaped retaining wall is arranged in the tank body and divides the tank body into four areas, overflow ports are respectively arranged from three edges of the cross-shaped retaining wall to the edges of the tank, and the overflow ports are respectively an overflow port on the right side, an overflow port on the lower side and an overflow port on the left side; a liquid outlet and a liquid inlet are respectively formed in the tank body on the left side and the right side of the fourth edge of the cross retaining wall, and a solution sequentially flows through each area through the overflow port, so that the flowing path is prolonged, the solution settling efficiency is improved, the content of suspended solids in the solution is reduced, and the solution purity is improved. Screens and filter media are arranged in all the intervals, so that the entrainment amount of the superfine suspended solids is further reduced. In addition, the regional design facilitates dynamic maintenance in the production process, and the production stability and the system operation efficiency are improved. The design has the advantages of improving the sedimentation efficiency, saving the construction cost and the site area and the like.

Description

Technical Field

[0001] This utility model belongs to the field of hydrometallurgical technology, specifically relating to a multi-stage settling solution tank, especially a settling tank for treating copper-containing solutions in the copper smelting process, mainly used for the treatment of copper-containing solutions in the copper smelting process. Background Technology

[0002] In hydrometallurgical copper processes, the copper-containing solution obtained through grinding and leaching needs to undergo an extraction process to extract copper. In the extraction step, an organic phase (extractant + diluent) is used to enrich copper ions in the copper solution. The leaching solution from the upstream process and the CCD countercurrent washing solution, after clarification in a thickener, contain approximately 100-300 ppm of solid impurities. These solid impurities are carried into the extraction process and mix with the organic phase, generating some three-phase contaminants. The accumulation of these three-phase contaminants can affect the phase separation time, O / A ratio, and auxiliary material consumption in the extraction process. Therefore, ensuring the purity of the solution before entering the extraction system is crucial to reducing the formation of three-phase contaminants.

[0003] In current processes, settling tanks are typically used to store the solution, ensuring production continuity. On the other hand, the solution can settle naturally within these tanks, reducing the amount of solid particles entrained. However, since the settling efficiency of conventional solution tanks is limited, it is usually necessary to increase the settling area and excavate more solution tanks to further improve the settling effect, which further increases construction costs and occupies a large amount of space. Utility Model Content

[0004] This invention provides a multi-stage sedimentation solution tank, which can effectively extend the flow distance of the solution and improve the sedimentation effect.

[0005] To solve the above technical problems, this utility model provides a multi-stage sedimentation solution tank, characterized in that: the solution tank body is a square tank body, and a cross-shaped baffle wall is set inside it. The baffle wall divides the tank body into four areas. An overflow port is opened at each of the three edges of the cross baffle wall to the edge of the tank body. An outlet and an inlet are respectively set on the left and right sides of the tank body on the fourth edge of the cross baffle wall.

[0006] Each overflow and outlet is equipped with a screen of the same length as the overflow and outlet.

[0007] Beneficial effects: This utility model divides the solution into four zones using a cross-shaped baffle wall. The solution flows sequentially through each zone, extending the flow path, improving sedimentation efficiency, reducing the content of suspended solids, and enhancing solution purity. By installing screens and filter media in each zone, the amount of extremely fine suspended solids entrained is further reduced. Furthermore, the zoned design facilitates dynamic maintenance during production, improving production stability and system operating efficiency. This design offers advantages such as improved sedimentation efficiency, reduced construction costs, and less space required. Details are as follows:

[0008] 1. Improve sedimentation efficiency: By dividing the interior of the solution tank into four zones, the flow path of the solution in each zone is effectively extended, promoting the sedimentation of impurities and thus improving sedimentation efficiency.

[0009] 2. Reduced construction costs: Compared with traditional designs that require multiple settling tanks, this invention significantly reduces the number of solution tanks required by achieving multi-stage settling within a single solution tank, thereby reducing construction and maintenance costs.

[0010] 3. Saves site area: Reduces the number of sedimentation tanks, saves site area, and lowers site construction and operation costs.

[0011] 4. Improved production stability: The designed pool structure allows for better control of solution flow, ensuring the stability and continuity of the production process. Attached Figure Description

[0012] Figure 1 Schematic diagram of multi-stage sedimentation solution tank

[0013] Figure 2 Multi-stage sedimentation solution tank overflow trough. Detailed Implementation

[0014] To make the purpose, content and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below.

[0015] The present invention proposes a multi-stage sedimentation solution tank, the tank body is a square tank body, and a cross-shaped baffle wall is set inside it, the baffle wall divides the tank body into four areas 1, 2, 3, and 4;

[0016] An overflow outlet is provided at each of the three edges of the cross-shaped baffle wall to the edge of the pool, namely the overflow outlet 6 on the right side, the overflow outlet 7 on the lower side, and the overflow outlet 8 on the left side. An outlet 9 and an inlet 5 are respectively provided on the pool body on the left and right sides of the fourth edge of the cross-shaped baffle wall. The solution is injected through the inlet 5, flows through the four areas in sequence, and is discharged out of the pool from the outlet 9.

[0017] Specifically, this invention enables multi-stage sedimentation: the solution pool is square with a side length of 2S. Without partitioning, the shortest path the solution travels within the pool is along the diagonal. Dividing the solution pool into four regions, each with a side length of S, the shortest path for the solution in each individual region is calculated using the shortest path method. With a total of four regions, the total path traveled by the solution is [missing information]. Compared to a single solution pool, the shortest flow distance of the solution is twice as long.

[0018] Solution flow path: The solution is injected into the solution tank through the inlet 5 and starts flowing from the upper right area 1. When the solution reaches the right overflow outlet 6, it will flow from the upper right area 1 into the lower right area 2; when the solution reaches the lower overflow outlet 7, it will flow into the lower left area 3; finally, the solution will flow into the upper left area 4 and be discharged from the tank through the outlet 9.

[0019] Multi-stage filtration: Four screens (10) of the same length as the overflow outlet are provided at each overflow outlet and liquid outlet 9. The bottom of the screen (10) adopts an embedded design, which allows it to be fixed at the overflow outlet of the baffle wall by its own weight. The screens can be filled with filter media such as quartz sand and heap leaching ore of different sizes. When the solution flows through the screen (10), the media can block the suspended solids, silt and other impurities in the solution, and filter the extremely fine solid suspended solids entrained in the solution, making the solution entering the next stage of sedimentation clearer. Compared with the traditional single tank without a filtration device, the tank of this invention can achieve 4-stage filtration, which greatly improves the purity of the solution.

[0020] Dynamic maintenance: During long-term system operation, a large amount of suspended solids, sediments, silt, and other substances accumulate at the bottom of the solution tank. As the amount of sediment at the bottom increases, the effective volume of the solution tank will decrease, and as the solution flows, the impurities at the bottom will be carried back into the downstream process. Traditional solution tanks are designed as stand-alone units, requiring regular cleaning of the bottom material. During the cleaning process, production often needs to be stopped. However, given their large area, long emptying time, low operating efficiency, and long maintenance cycle, prolonged downtime can cause significant economic losses to enterprises.

[0021] The multi-stage sedimentation solution tank adopts a zoned design, allowing maintenance to be carried out sequentially. When maintenance is required in a certain area, a baffle can be added to the screen (10) at the overflow port of the previous stage to short-circuit the tank and prevent the solution from flowing through that area, thus achieving zoned treatment and enabling maintenance to be carried out during continuous production. At the same time, if too many impurities accumulate in the screen (10), they can be lifted out using the lifting lugs designed on the top of the screen (10) for cleaning, media replacement, and other operations.

[0022] This design not only reduces the workload of maintaining a single area and shortens the operation time, but more importantly, it can be carried out during continuous production, ensuring the continuity of production.

[0023] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A multi-stage sedimentation solution tank, characterized in that: The solution tank is a square tank with a cross-shaped baffle wall inside, which divides the tank into four areas. An overflow port is opened at each of the three edges of the cross baffle wall to the edge of the tank. An outlet and an inlet are respectively set on the left and right sides of the tank at the fourth edge of the cross baffle wall.

2. The multi-stage sedimentation solution tank according to claim 1, characterized in that: At each overflow port and outlet, a screen (10) of the same length as the overflow port and outlet is provided.

3. The multi-stage sedimentation solution tank according to claim 2, characterized in that: The bottom of the screen (10) adopts an embedded structure.

4. The multi-stage sedimentation solution tank according to claim 1, characterized in that: The sieve is filled with filter media.

5. A multi-stage sedimentation solution tank according to claim 4, characterized in that: The filter media are quartz sand and heap leach ore of different sizes.

6. A multi-stage sedimentation solution tank according to any one of claims 2-5, characterized in that: The top of the sieve (10) is designed with a hanging lug.

7. A multi-stage sedimentation solution tank according to claim 1, characterized in that: The three overflow outlets are the overflow outlet on the right, the overflow outlet on the bottom, and the overflow outlet on the left.

8. A multi-stage sedimentation solution tank according to claim 1, characterized in that: The solution is injected through the inlet, flows through four zones in sequence, and is discharged out of the pool from the outlet.

9. A multi-stage sedimentation solution tank according to claim 1, characterized in that: The solution tank is square in shape.

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