Copper-separated liquid treatment system

Abstract

The utility model discloses a copper-separated liquid treatment system, which comprises a copper-separated liquid storage system, the copper-separated liquid storage system is connected to a low tank in an electrodeposition plant through a first liquid transfer pump, the low tank is connected to a high tank through a pipeline, a second liquid transfer pump and a heat exchanger are sequentially arranged on the pipeline between the low tank and the high tank, and the second liquid transfer pump is connected with the heat exchanger. The overhead tank is connected with a self-flowing pipe, the self-flowing pipe is connected to a section of electrodeposition cell in an electrodeposition plant, the tail part of the section of electrodeposition cell is connected to a tail liquid tank through a pipeline and a third liquid transfer pump, and the outlet end of the tail liquid tank is used for conveying sulfuric acid to a sulfuric acid plant through a fourth liquid transfer pump; the device is simple and convenient in process and obvious in benefit, can be used for carrying out a single-tank electrodeposition test on the copper-separated liquid in advance by utilizing an existing purification system, explores process parameters of the copper-separated liquid treated by an electrodeposition method, and can also be widely applied to a copper electrolysis purification process.

Description

Technical Field

[0001] This utility model relates to the technical field of copper electrolytic purification equipment, and in particular to a copper separation post-liquid treatment system. Background Technology

[0002] In the copper electrolytic refining process, the wastewater often contains a certain amount of precious metals, such as gold and silver. Copper separation liquid is a significant type of this wastewater, its main components including copper sulfate, sulfuric acid, and other chemical substances, and may also contain trace amounts of precious metals such as gold and silver. These precious metals dissolve in the wastewater during electrolysis, forming wastewater containing precious metals. If this wastewater is discharged directly without proper treatment, it will cause serious environmental pollution and waste valuable resources. The treatment of copper separation liquid generally involves evaporation and crystallization to produce copper sulfate first, followed by neutralization with powdered soda ash to precipitate copper and produce basic copper carbonate. This system has low process efficiency, high production costs, limited processing capacity, and low equipment level, posing significant environmental risks. Utility Model Content

[0003] The purpose of this invention is to address the above-mentioned situation by providing a copper separation post-liquid treatment system. This system is simple to use and has significant effects in treating copper separation post-liquid.

[0004] The specific solution of this utility model is as follows: a copper separation post-liquid treatment system, including a copper separation post-liquid storage system. The copper separation post-liquid storage system is connected to a low-level tank in the electrowinning plant through a first transfer pump. The low-level tank is connected to a high-level tank through a pipeline. A second transfer pump and a heat exchanger are sequentially installed on the pipeline between the low-level tank and the high-level tank. A gravity flow pipe is connected to the high-level tank. The gravity flow pipe is connected to a section of the electrowinning tank in the electrowinning plant. The tail end of the section of the electrowinning tank is connected to a tail liquid tank through a pipeline and a third transfer pump. The outlet end of the tail liquid tank is transported to the sulfuric acid workshop through a fourth transfer pump.

[0005] Furthermore, the electrodeposition cell section described in this utility model is provided with a total of 16 electrodeposition cells, which are connected by a parallel circulation method.

[0006] Furthermore, the heat exchanger described in this utility model is a plate heat exchanger, and two plate heat exchangers are connected in series.

[0007] Furthermore, a clear liquid pit is also provided below the electrowinning tank described in this utility model.

[0008] Furthermore, the copper separation liquid storage system described in this utility model includes a sulfate pit and a copper separation liquid storage tank. The sulfate pit and the copper separation liquid storage tank are connected by a pipeline and a fifth transfer pump. The copper separation liquid storage tank is connected to a low-level tank in the electrowinning plant through a first transfer pump.

[0009] The application of this invention improves the processing capacity of the copper-separated liquid in the purification system and reduces its processing cost.

[0010] This invention features a simple process and significant benefits. It allows for advance testing of single-tank electrowinning of the copper-separated liquid using existing purification systems to explore the process parameters for treating the copper-separated liquid using the electrowinning method. It can also be widely applied in copper electrolysis purification processes. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0012] In the diagram: 1—Heat exchanger, 2—High-level tank, 3—Fourth transfer pump, 4—Tail liquid tank, 5—Electrowinning plant, 6—Third transfer pump, 7—Low-level tank, 8—Clear liquid pit, 9—Electrowinning tank, 10—Second transfer pump, 11—First transfer pump, 12—Copper separation liquid storage tank, 13—Sulfate plant, 14—Fifth transfer pump, 15—Sulfate pit. Detailed Implementation

[0013] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," etc., indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0014] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] See Figure 1This utility model is a copper separation post-liquid treatment system, including a copper separation post-liquid storage system. The copper separation post-liquid storage system is connected to a low-level tank 7 in the electrowinning plant 5 through a first transfer pump 11. The low-level tank is connected to a high-level tank 2 through a pipe. A second transfer pump 10 and a heat exchanger 1 are sequentially installed on the pipe between the low-level tank and the high-level tank. A gravity flow pipe is connected to the high-level tank and is connected to a section of electrowinning tank in the electrowinning plant. The tail end of the section of electrowinning tank is connected to a tail liquid tank 4 through a pipe and a third transfer pump 6. The outlet end of the tail liquid tank is transported to the sulfuric acid workshop through a fourth transfer pump 3.

[0016] Furthermore, the electrodeposition cell section described in this utility model is provided with a total of 16 electrodeposition cells 9, which are connected by a parallel circulation method.

[0017] Furthermore, the heat exchanger described in this invention is a plate heat exchanger, and two plate heat exchangers are connected in series. Furthermore, a clear liquid pit 8 is also provided below one section of the electrowinning tank in this invention.

[0018] Furthermore, the copper separation liquid storage system described in this utility model includes a sulfate pit 15 and a copper separation liquid storage tank 12. The sulfate pit and the copper separation liquid storage tank are connected by a pipeline and a fifth transfer pump 14. The copper separation liquid storage tank is connected to a low-level tank in the electrowinning plant through a first transfer pump 11.

[0019] The working principle of this utility model:

[0020] The copper-separated liquid is pumped from the copper-separated liquid storage tank into a low-level tank in the original electrowinning plant via the first transfer pump. Then, it is sent to a plate heat exchanger for heating via the second transfer pump and enters a high-level tank. The copper-separated raw liquid in the high-level tank flows by gravity to a section of 16 electrowinning tanks for copper removal and electrowinning. The electrowinning method adopts a parallel circulation method. The tail liquid flows by gravity to the tail liquid tank and is pumped by the fourth transfer pump to a tanker truck for further processing in the sulfuric acid workshop.

[0021] The processing method of this utility model makes full use of the existing electrowinning cell equipment in the electrowinning plant to process the copper-separated solution, which saves related costs in terms of processing equipment and greatly increases the processing capacity. The parallel circulation method for electrowinning and copper removal of the copper-separated solution has a very good effect.

[0022] The application of this invention improves the processing capacity of the copper-separated liquid in the purification system and reduces its processing cost. This invention features a simple process and significant benefits. It allows for advance single-tank electrowinning tests of the copper-separated liquid using existing purification systems to explore the process parameters for electrowinning treatment of the copper-separated liquid. Furthermore, it can be widely applied in copper electrolysis purification processes.

Claims

1. A copper-separated liquid treatment system, comprising a copper-separated liquid storage system, characterized in that: The copper separation liquid storage system is connected to a low-level tank in the electrowinning plant via a first transfer pump. The low-level tank is connected to a high-level tank via a pipeline. A second transfer pump and a heat exchanger are sequentially installed on the pipeline between the low-level tank and the high-level tank. A gravity flow pipe is connected to the high-level tank and is connected to a section of the electrowinning tank in the electrowinning plant. The tail end of the section of the electrowinning tank is connected to a tail liquid tank via a pipeline and a third transfer pump. The outlet of the tail liquid tank is transported to the sulfuric acid workshop via a fourth transfer pump.

2. The copper separation post-liquid treatment system according to claim 1, characterized in that: The electrodeposition cell section has a total of 16 electrodeposition cells, which are connected in parallel using a cyclic method.

3. The copper separation post-treatment system according to claim 1, characterized in that: The heat exchanger is a plate heat exchanger, and two plate heat exchangers are connected in series.

4. The copper separation post-liquid treatment system according to claim 1, characterized in that: A clear liquid pit is also provided below the electrodeposition cell.

5. The copper separation post-treatment system according to claim 1, characterized in that: The copper separation liquid storage system includes a sulfate pit and a copper separation liquid storage tank. The sulfate pit and the copper separation liquid storage tank are connected by a pipeline and a fifth transfer pump. The copper separation liquid storage tank is connected to a low-level tank in the electrowinning plant through a first transfer pump.

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