A thickener aeration device

Abstract

The utility model relates to a kind of thickening tank aerating device, including thickening pool body, the thickening pool body top is provided with operation platform, the center position of operation platform bottom is connected with feeding cylinder, the outer periphery of feeding cylinder bottom is provided with annular air pipe, air inlet is opened on the annular air pipe, the air inlet is connected with air inlet pipe, the inside of annular air pipe is spaced apart and is communicated with several spiral aeration discs, several micro air holes are evenly opened on the spiral aeration disc.The utility model is filled with gas to ore pulp uniformly by the additional aerating device, so that base metal ions (such as copper, sulfur and pyrite minerals) in ore pulp are oxidized and precipitated in advance in concentration stage, reduce the consumption of these base metal ions in subsequent leaching stage to dissolved oxygen.At the same time, it also provides sufficient oxygen contact for gold and silver, so that it is pre-leached in thickening tank, significantly prolongs leaching time, and improves the leaching rate of gold and silver.

Description

Technical Field

[0001] This utility model relates to the field of thickening pool aeration technology, specifically to a thickening pool aeration device. Background Technology

[0002] In the whole-mud cyanide carbon-in-pulp gold extraction process, cyanide (CN) - Oxygen concentration and oxygen concentration are key factors determining the dissolution rate of gold. Studies have shown that the dissolution rate of gold is fastest when the ratio of O2 to CN⁻ concentration in the solution is 6. However, when the ore pulp contains a large amount of copper, sulfur, and iron sulfide minerals, these base metal ions participate in the reaction, consuming a large amount of dissolved oxygen in the ore pulp, thus disrupting the balance between O2 and CN⁻ concentrations. This not only reduces the dissolution rate of gold and silver but also increases the cost of cyanide consumption.

[0003] To reduce the impact of harmful impurities on the dissolution rate of gold and silver, traditional processes typically introduce air into the alkaline slurry before cyanide leaching, causing the iron sulfide minerals to oxidize and form a precipitate. This precipitate no longer reacts with cyanide and does not consume oxygen in the solution, thus facilitating gold and silver leaching. However, in existing processes, oxygen introduction usually occurs only in the leaching tank, leading to a delayed reaction and insufficient leaching time, failing to meet the required reaction time for gold and silver leaching. When the base metal ion content in the ore increases, traditional processes cannot effectively address the oxygen deficiency problem, resulting in reduced gold and silver recovery rates and significant metal loss.

[0004] To address the aforementioned issues, this application proposes a technical solution that introduces an aeration device into the thickening tank, aiming to solve problems such as insufficient oxygen, insufficient leaching time, and oxygen consumption by base metal ions in traditional processes, thereby improving the leaching efficiency and recovery rate of gold and silver. Utility Model Content

[0005] This utility model provides a dense pool inflation device.

[0006] The specific technical solution of this utility model is as follows:

[0007] A thickening tank aeration device includes a thickening tank body, an operating platform at the top of the thickening tank body, a feeding cylinder connected to the center of the bottom of the operating platform, an annular air pipe on the outer periphery of the bottom of the feeding cylinder, an air inlet on the annular air pipe, the air inlet being connected to an air inlet pipe, and a plurality of spiral air inflating discs spaced apart on the inner side of the annular air pipe, the spiral air inflating discs having a plurality of micro air holes evenly distributed on them.

[0008] Furthermore, preferably, the top of the spiral inflatable disc is connected to the suspension beam via a connecting frame, and the suspension beam is mounted on the operating platform.

[0009] Furthermore, preferably, one end of the connecting frame is connected to the spiral inflatable disc, and the other end is a hook structure that is directly hung on the suspension beam.

[0010] Furthermore, preferably, a one-way valve is installed at the position where the spiral inflation disc connects to the annular air pipe.

[0011] Furthermore, preferably, the end of the air intake pipe away from the air intake extends to the operating platform.

[0012] The beneficial effects of this invention are as follows: By uniformly introducing gas into the slurry through an added aeration device, base metal ions (such as copper, sulfur, and iron sulfide minerals) in the slurry are oxidized and precipitated in advance during the concentration stage, reducing the consumption of dissolved oxygen by these base metal ions in the subsequent leaching stage. This process not only optimizes the oxygen-to-cyanide concentration ratio in the slurry, creating more favorable conditions for gold and silver leaching, but also significantly enhances the mixing effect between bubbles and the slurry through the uniform distribution and stirring of the gas, further improving the uniform distribution of oxygen in the slurry, thereby optimizing the pretreatment effect of the slurry. This innovative improvement not only increases the processing efficiency of the slurry but also provides sufficient oxygen contact for gold and silver, allowing them to undergo pre-leaching in the thickening tank in advance, significantly extending the leaching time and thus increasing the leaching rate of gold and silver. In addition, the device also improves the utilization efficiency of cyanide and reduces production costs by reducing the consumption of oxygen by impurities. Its hook-type connection design and one-way valve configuration not only improve the ease of equipment maintenance but also enhance the stability of the entire process. Attached Figure Description

[0013] Figure 1 This is a top view of a dense pool aeration device according to the present invention;

[0014] Figure 2 This is a front view of a thickening tank aeration device according to the present invention;

[0015] Figure 3 This is a structural diagram of a spiral air-filled disc;

[0016] In the diagram: 1-Concentration tank, 2-Operating platform, 3-Feeding cylinder, 4-Annular air pipe, 5-Air inlet, 6-Air inlet pipe, 7-Spiral aeration disc, 8-Micro air hole, 9-Connecting frame, 10-Suspension beam, 11-One-way valve, 12-Pulp inlet pipe, 13-Drive device, 14-Agitator rod, 15-Rake frame. Detailed Implementation

[0017] To make the technical problems and solutions solved by this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0018] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] 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.

[0020] like Figure 1 Figure 2 As shown, this embodiment provides a thickener aeration device, including a thickener body 1. An operating platform 2 is mounted on the top of the thickener body 1. A feed cylinder 3 is connected to the center of the bottom of the operating platform 2, located at the center of the thickener body 1. A slurry inlet pipe 12 is connected to one side of the feed cylinder 3 for inputting slurry. A drive device 13 is installed at the center of the top of the operating platform 2. A stirring rod 14 is connected to the output end of the drive device 13. The stirring rod 14 passes through the center of the feed cylinder 3 into the thickener body 1 and is connected to a rake frame 15 for stirring and scraping off the concentrated solid particles. The above structure is a conventional component of a thickener.

[0021] The core of this embodiment lies in adding an inflation device to the thickening tank, specifically including an annular air pipe 4, an air inlet 5, an air inlet pipe 6, a spiral inflation disc 7, micro-air holes 8, a connecting frame 9, and a suspension beam 10. Combined with... Figure 3 As shown, an annular air pipe 4 is provided on the outer periphery of the bottom of the feed cylinder 3. An air inlet 5 is provided on the annular air pipe 4, and the air inlet 5 is connected to an air storage tank on the operating platform via an air inlet pipe 6, providing a stable air source for the annular air pipe 4. A spiral air filling disc 7 is connected at intervals to the inner side of the annular air pipe 4. Several micro-holes 8 are evenly distributed on the spiral air filling disc 7 to uniformly release gas into the slurry. The top of the spiral air filling disc 7 is connected to a suspension beam 10 via a connecting frame 9. The suspension beam 10 is mounted on the operating platform 2 to ensure the stable installation of the air filling device.

[0022] To further optimize the performance and safety of the device, a one-way valve 11 (using an existing pre-made component, such as a 200CF8M one-way valve) is installed at the connection between the spiral aeration disc 7 and the annular gas pipe 4. The function of the one-way valve 11 is to prevent the slurry from being drawn back into the gas storage tank when the gas supply stops, thereby avoiding equipment damage and contamination.

[0023] In addition, one end of the connecting frame 9 is firmly connected to the spiral inflation disc 7, while the other end is designed as a hook structure that can be directly hung on the suspension beam 10. This hook-type connection method not only facilitates the installation and disassembly of the inflation device, but also makes it convenient for daily removal and maintenance operations, greatly improving the maintenance efficiency and convenience of the equipment.

[0024] Working principle: After assembling the aeration device and fixing it to the bottom outer periphery of the feed cylinder 3, the air storage tank is activated. The air storage tank continuously supplies gas to the air inlet pipe 6, and the gas then flows into the annular air pipe 4 through the air inlet 5. At this time, the one-way valve 11 opens to ensure that the gas is smoothly delivered from the annular air pipe 4 to the spiral aeration disc 7. The gas is evenly released into the slurry in the form of tiny bubbles along the micro-pores 8 on the spiral path.

[0025] Meanwhile, the slurry enters the feed cylinder 3 through the inlet pipe 12, where it comes into full contact with the gas released from the micro-pores 8 during its descent. Under the stirring action of the rake frame 15, the mixing effect between the bubbles and the slurry is significantly enhanced, allowing oxygen to be further evenly distributed throughout the slurry. This process not only accelerates the oxidation reaction of base metal ions (such as copper, sulfur, and iron sulfide minerals) in the slurry, causing them to precipitate earlier and thus reducing the interference of these base metal ions on the subsequent leaching process, but also provides sufficient oxygen contact for gold and silver, allowing them to undergo pre-leaching in the thickening tank. This improvement is beneficial for increasing the leaching rate of gold and silver and optimizing the entire slurry treatment process. When aeration is not required, the gas storage tank stops working, and the one-way valve 11 closes immediately, effectively preventing the slurry from being drawn back into the gas storage tank, thereby avoiding equipment damage and contamination.

[0026] The present invention has been described in detail above through specific and preferred embodiments. However, those skilled in the art should understand that the present invention is not limited to the embodiments described above. Any modifications or equivalent substitutions made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dense pool aeration device, characterized in that: The system includes a concentration tank (1), an operating platform (2) is provided on the top of the concentration tank (1), a feeding cylinder (3) is connected to the center of the bottom of the operating platform (2), an annular air pipe (4) is provided on the outer periphery of the bottom of the feeding cylinder (3), an air inlet (5) is provided on the annular air pipe (4), the air inlet (5) is connected to the air inlet pipe (6), and a number of spiral air filling discs (7) are connected at intervals on the inner side of the annular air pipe (4), and a number of micro air holes (8) are evenly provided on the spiral air filling discs (7).

2. The thickening tank aeration device according to claim 1, characterized in that: The top of the spiral air-filled disc (7) is connected to the suspension beam (10) via a connecting frame (9), and the suspension beam (10) is set on the operating platform (2).

3. The thickening tank aeration device according to claim 2, characterized in that: One end of the connecting frame (9) is connected to the spiral air disc (7), and the other end is a hook structure that is directly hung on the suspension beam (10).

4. A thickening tank aeration device according to any one of claims 1-3, characterized in that: A one-way valve (11) is installed at the position where the spiral inflation disc (7) connects to the annular air pipe (4).

5. The thickening tank aeration device according to claim 4, characterized in that: The end of the air intake pipe (6) away from the air intake (5) extends to the operating platform (2).

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