Defoaming device for copper slag beneficiation

Abstract

The utility model relates to a defoaming device for copper slag beneficiation, and belongs to the technical field of defoaming devices. Comprising a defoaming box, a slurry inlet pipe, a slurry outlet pipe, a bubble baffle and a spraying pipe, a pulp inlet pipe is arranged on one side of the defoaming box, a pulp outlet pipe is arranged on the other side of the defoaming box, the pulp inlet pipe is connected with an ore pulp conveying pipeline, and the pulp outlet pipe is connected with an inlet of the thickening pool; foam blocking plates are arranged in the defoaming box, are uniformly arranged at intervals in the flowing direction of ore pulp in the defoaming box, and are obliquely arranged towards the side where the pulp outlet pipe is located; the ore pulp is subjected to pre-defoaming treatment before entering the thickening tank, so that most of foam in the ore pulp can be removed in advance, the foam content of the ore pulp entering the thickening tank is reduced by 95% or above, the defoaming pressure of the thickening tank is reduced, and the concentration efficiency and the treatment capacity of the thickening tank are improved; and the production efficiency of the whole copper slag beneficiation process is improved.

Description

Technical Field

[0001] This utility model relates to the field of defoaming device technology, and in particular to a defoaming device for copper slag beneficiation. Background Technology

[0002] The copper slag beneficiation process generally includes crushing, grinding, flotation, concentrate thickening, and filtration. Concentrate thickening is typically carried out in a thickening tank, and its effective operation plays a crucial role in overall beneficiation efficiency and product quality. However, a large amount of foam is easily generated during flotation. This foam is usually introduced directly into the thickening tank along with the slurry through slurry delivery pipelines, and then defoamed using the defoaming mechanism built into the thickening tank.

[0003] Traditional in-machine defoaming methods for thickeners have many drawbacks. For example, mechanical agitation defoaming can cause excessive disturbance to the slurry, affecting subsequent solid-liquid separation; chemical defoaming is not only costly but may also introduce impurities, negatively impacting the purity of the final copper product; while high-pressure water spray defoaming can break up foam to some extent, it consumes a large amount of water and is ineffective at treating stubborn foam. Furthermore, in-machine defoaming occupies internal space, increasing the complexity and cost of equipment maintenance.

[0004] Furthermore, if the foam generated during the flotation process is directly introduced into the thickening tank, it will lead to problems such as decreased solid-liquid separation efficiency and increased overflow turbidity.

[0005] With the increasing demands for production efficiency and environmental protection in the copper slag beneficiation industry, it is imperative to develop a defoaming device that is highly efficient, energy-saving, environmentally friendly, and well-suited to existing production processes. Utility Model Content

[0006] To solve or partially solve the problems existing in related technologies, this utility model provides a defoaming device for copper slag beneficiation, which aims to reduce the amount of foam introduced into the thickening tank.

[0007] The aforementioned defoaming device for copper slag beneficiation includes a defoaming box, a slurry inlet pipe, a slurry outlet pipe, a defoaming baffle plate, and a spray pipe.

[0008] The defoaming box is provided with an inlet pipe on one side and an outlet pipe on the other side. The inlet pipe is connected to the slurry conveying pipeline, and the outlet pipe is connected to the inlet of the thickening tank.

[0009] The defoaming box is equipped with a bubble-blocking plate, which is evenly spaced along the flow direction of the slurry in the defoaming box, and the bubble-blocking plate is inclined towards the side where the slurry outlet pipe is located.

[0010] The top of the defoaming box is equipped with a spray pipe, and atomizing nozzles are evenly spaced on the spray pipe;

[0011] The liquid level in the defoaming tank is located between the lowest and highest points of the bubble-blocking plate.

[0012] In some designs, the bubble baffle is tilted at an angle of 30°-60°.

[0013] In some designs, the spray pipe is equipped with a flow regulating valve and a pressure sensor. The pressure sensor is connected to the signal input terminal of the controller, and the signal output terminal of the controller is connected to the flow regulating valve.

[0014] In some designs, the bottom of the defoaming box is provided with a V-shaped flow channel.

[0015] In some designs, the slurry outlet pipe is equipped with a valve.

[0016] The technical solution provided by this utility model can include the following beneficial effects:

[0017] 1. This application removes most of the foam in the slurry by performing pre-defoaming treatment before the slurry enters the thickening tank, reducing the foam content of the slurry entering the thickening tank by more than 95%, thus reducing the defoaming pressure on the thickening tank, improving the thickening efficiency and processing capacity of the thickening tank, and thereby improving the production efficiency of the entire copper slag beneficiation process.

[0018] 2. This application utilizes a dual defoaming mechanism that combines a bubble baffle plate with high-pressure water jets, fully leveraging the advantages of both defoaming methods. It effectively breaks down foams of different properties and sizes, achieving a defoaming rate of over 95%, thus solving the problem of poor performance of traditional single defoaming methods.

[0019] 3. Compared with the traditional in-machine defoaming method, this device avoids the use of a large amount of chemical agents, reducing agent costs and environmental pollution; at the same time, the reduction of chemical agents also helps to improve the quality of the final copper product.

[0020] 4. This application features a compact structure and small footprint, allowing for easy integration into existing copper slag beneficiation processes and good adaptability to beneficiation plants of different sizes and types. Furthermore, the components are easy to install and disassemble, facilitating daily inspection, maintenance, and cleaning, effectively reducing equipment maintenance costs and downtime.

[0021] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit the present invention. Attached Figure Description

[0022] The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings, in which like reference numerals generally represent like parts.

[0023] Figure 1 This is a schematic diagram of the defoaming device shown in an embodiment of the present invention;

[0024] Figure 2 This is another structural schematic diagram of the defoaming device shown in this embodiment of the utility model;

[0025] Figure 3 This is a schematic diagram of the flow channel of the defoaming device shown in an embodiment of the present invention.

[0026] Figure label:

[0027] 1. Defoaming box; 2. Slurry inlet pipe; 3. Slurry outlet pipe; 4. Bubble baffle; 5. Spray pipe; 6. Atomizing nozzle; 7. Flow regulating valve; 8. Pressure sensor; 9. Guide channel. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but the scope of protection of the present invention is not limited to the content described.

[0029] like Figure 1 and Figure 2 As shown, this application provides a defoaming device for copper slag beneficiation, including a defoaming box 1, a slurry inlet pipe 2, a slurry outlet pipe 3, a bubble baffle 4, and a spray pipe 5. The defoaming box 1 is made of corrosion-resistant stainless steel, which can effectively resist the erosion of chemical substances in the slurry and extend the service life of the device. The defoaming box 1 is roughly rectangular.

[0030] The defoaming tank 1 is provided with an inlet pipe 2 on one side and an outlet pipe 3 on the other side. The inlet pipe 2 is connected to the slurry conveying pipeline, and its diameter is designed according to the actual slurry flow rate to ensure that the slurry can flow smoothly into the defoaming tank 1. The outlet pipe 3 is connected to the inlet of the thickening tank to steadily transport the defoamed slurry to the thickening tank for subsequent processing.

[0031] The defoaming tank 1 is equipped with three bubble-blocking plates 4, evenly spaced along the flow direction of the slurry within the defoaming tank 1, and inclined towards the side where the slurry outlet pipe 3 is located. When the slurry flows into the defoaming tank 1 from the inlet pipe 2, the liquid level in the defoaming tank 1 is between the lowest and highest points of the bubble-blocking plates 4. Thus, the bubble-blocking plates 4 divide the slurry above into four defoaming zones. Foam in the slurry floats to different defoaming zones and collides with the bubble-blocking plates 4, effectively eliminating the foam in the slurry. Through the mechanical blocking and guiding effect of the bubble-blocking plates 4, large pieces of foam are initially broken up, and the thickness of the foam layer can be reduced by approximately 20%-30%. Preferably, the inclination angle of the bubble-blocking plates 4 is 30°-60° to ensure that while effectively blocking foam, it does not excessively obstruct the normal flow of the slurry.

[0032] The top of the defoaming box 1 is equipped with a spray pipe 5, which is connected to an external water source through a pipe. Atomizing nozzles 6 are evenly spaced on the spray pipe 5.

[0033] During operation, the slurry is introduced into the defoaming box 1 through the slurry inlet pipe 2. The foam in the slurry floats to the space between the foam baffles 4 and undergoes a first defoaming treatment through the collision between the foam and the foam baffles 4. At the same time, clean water is introduced into the spray pipe 5 and high-pressure water is sprayed out from the atomizing nozzle 6, impacting the foam surface in a fan-shaped mist, quickly destroying the surface tension of the foam, causing the foam to break quickly, and performing a second defoaming treatment.

[0034] This application removes most of the foam from the slurry before it enters the thickening tank by performing pre-defoaming treatment, reducing the foam content of the slurry entering the thickening tank by more than 95%, thus alleviating the defoaming pressure on the thickening tank, improving the thickening efficiency and processing capacity of the thickening tank, and thereby improving the production efficiency of the entire copper slag beneficiation process.

[0035] This application utilizes a dual defoaming mechanism combining a bubble baffle 4 with high-pressure water impact, fully leveraging the advantages of both defoaming methods. It effectively eliminates foams of different properties and sizes, achieving a defoaming rate of over 95%, thus solving the problem of poor performance of traditional single defoaming methods.

[0036] Compared with traditional in-machine defoaming methods, this device avoids the use of large amounts of chemical agents, reducing agent costs and environmental pollution; at the same time, the reduction in chemical agent addition also helps to improve the quality of the final copper product.

[0037] This application features a compact structure and small footprint, allowing for easy integration into existing copper slag beneficiation processes and providing good adaptability to beneficiation plants of different sizes and types. Furthermore, the components are easy to install and disassemble, facilitating daily inspection, maintenance, and cleaning, effectively reducing equipment maintenance costs and downtime.

[0038] In some specific embodiments, the spray pipe 5 is equipped with a flow regulating valve 7 and a pressure sensor 8. The pressure sensor 8 is connected to the signal input terminal of the controller, and the signal output terminal of the controller is connected to the flow regulating valve 7. In use, the pressure sensor 8 detects the pressure inside the spray pipe 5 and transmits the relevant data to the controller. The controller controls the opening of the flow regulating valve 7 according to the input data, thereby maintaining the pressure inside the spray pipe 5 between 0.5MPa and 1MPa, to ensure that the high-pressure water sprayed from the atomizing nozzle 6 has sufficient impact force to break up the foam.

[0039] In some specific implementations, such as Figure 3 As shown, the bottom of the defoaming tank 1 is provided with a V-shaped guide channel 9 with an inclination angle of 5°-10°. This design can guide the defoamed slurry to flow smoothly along the guide channel 9 to the slurry outlet pipe 3, reduce the residence time and turbulence of the slurry in the tank, and effectively avoid the generation of secondary foam.

[0040] In some specific embodiments, the slurry outlet pipe 3 is equipped with a valve. During use, the opening degree of the valve can be adjusted to keep the liquid level in the defoaming tank 1 at a suitable position.

[0041] In some specific embodiments, the slurry inlet pipe 2 and the slurry outlet pipe 3 are staggered vertically, and the slurry inlet pipe 2 is set at a higher height than the slurry outlet pipe 3. This makes the slurry outlet position lower, so that the foam in the slurry is less likely to flow out of the defoaming box 1 with the slurry, which is beneficial to improving the defoaming ability of the device.

[0042] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A defoaming device for copper slag beneficiation, characterized in that: The device comprises a defoaming tank (1), a pulp inlet pipe (2), a pulp outlet pipe (3), a bubble blocking plate (4) and a spray pipe (5). One side of the defoaming tank (1) is provided with the pulp inlet pipe (2), and the other side is provided with the pulp outlet pipe (3). The pulp inlet pipe (2) is connected with a pulp conveying pipeline, and the pulp outlet pipe (3) is connected with an inlet of a thickening tank. The defoaming tank (1) is provided with the bubble blocking plate (4). The bubble blocking plate (4) is uniformly and spacedly arranged along the flow direction of the pulp in the defoaming tank (1), and the bubble blocking plate (4) is arranged obliquely to the side where the pulp outlet pipe (3) is located. The top of the defoaming tank (1) is provided with the spray pipe (5). The spray pipe (5) is uniformly and spacedly provided with atomizing nozzles (6). The liquid level in the defoaming tank (1) is between the lowest point and the highest point of the bubble blocking plate (4).

2. The defoaming device for copper slag beneficiation according to claim 1, wherein: The inclination angle of the bubble blocking plate (4) is 30°-60°.

3. The defoaming device for copper slag beneficiation according to claim 1, wherein: The spray pipe (5) is provided with a flow regulating valve (7) and a pressure sensor (8). The pressure sensor (8) is connected with a signal input end of a controller, and a signal output end of the controller is connected with the flow regulating valve (7).

4. The defoaming device for copper slag beneficiation according to claim 1, wherein: The bottom of the defoaming tank (1) is provided with a V-shaped flow guide groove (9).

5. The defoaming device for copper slag beneficiation according to claim 1, wherein: The pulp outlet pipe (3) is provided with a valve.

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