Device for collecting powdered carbon through filter material deposition in barren liquor

Abstract

The invention relates to the technical field of gold-loaded powdered carbon collection, in particular to a device for collecting powdered carbon through deposition of a filter material in barren liquor, which comprises a fixing frame, the fixing frame is suspended in a barren liquor pool, and the whole filter system is fixedly mounted in the barren liquor pool to ensure the stability of the device; the filter element is detachably connected in the fixing frame, and the filter element is immersed in the barren liquor pool and is used for filtering powdered carbon in the barren liquor pool. The device is simple in structure, flexible to use, high in filtering efficiency, convenient to maintain, good in stability and capable of effectively filtering powdered carbon in the barren liquor pool, meanwhile, the operation process is a physical process, dangerous gas is not generated, and the safety of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of gold-loaded carbon collection technology, and more particularly to an apparatus for collecting carbon powder by filter media deposition in lean liquid. Background Technology

[0002] In the cyanide heap leaching process for gold extraction, activated carbon is used as an adsorbent to enrich gold. However, during adsorption, due to friction during carbon extraction and thermal stress caused by water cooling after desorption, the activated carbon gradually pulverizes, producing a large amount of pulverized carbon. This pulverized carbon, especially the -350 mesh fraction, is too fine to be effectively screened and recovered.

[0003] Powdered carbon, pumped into the leaching heap along with lean liquor, not only leads to gold loss but may also trap gold particles on the heap, thus reducing gold recovery. Membrane filtration analysis revealed a high solids content in the lean liquor, with 53% being carbon and the remainder being sludge, making effective separation difficult. The fine carbon particles, with a D80 of only 13.5 μm, carry a negative charge in a strongly alkaline environment, exhibiting a high electrokinetic potential, making sedimentation and agglomeration difficult, thus hindering effective recovery using conventional solid-liquid separation methods. Furthermore, although previous attempts were made to deposit powdered carbon using filter media deposition coupled with electrostatic adsorption, experimental observations and theoretical analysis showed that while the electrostatic field voltage and strength were high, the extremely low current resulted in only hydrogen gas being released. Hydrogen is a flammable and explosive substance, affecting production safety and hindering large-scale application.

[0004] Therefore, the present invention proposes an apparatus for collecting char powder by deposition of filter media in a lean solution to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to provide an apparatus for collecting pulverized carbon by filter media deposition in lean liquor, which can solve the problem of difficult recovery of pulverized carbon in lean liquor, improve the gold recovery rate, and reduce production costs, thereby solving the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides an apparatus for collecting powdered carbon by filter media deposition in lean solution, comprising:

[0007] A fixing frame is suspended inside the lean solution tank to fix the entire filtration system to the lean solution tank and ensure the stability of the device;

[0008] The filter element is detachably connected to the fixed frame and is immersed in the lean liquid tank to filter the powdered carbon in the lean liquid tank.

[0009] Preferably, the fixing frame includes a longitudinally arranged frame, the lower part of which is immersed in the lean liquid tank, and the filter element is detachably connected to and locked within the frame.

[0010] Preferably, the fixing frame further includes a crossbeam vertically disposed at the top of the frame, the crossbeam being reinforced with the side wall of the frame by a reinforcing rod; the two ends of the crossbeam are abutted and fixed to the two ends of the inner wall of the lean liquid tank.

[0011] Preferably, the filter element includes a filter frame adapted to the frame, the filter frame being detachably connected within the frame; the frame is provided with longitudinally reciprocating stacked filter media, the filter media being used to filter the powdered carbon in the lean liquid tank.

[0012] Preferably, the filtration accuracy of the filter media is not less than that of powdered carbon D. 80 Five times that.

[0013] Preferably, the filter frame is provided with a plurality of horizontally arranged fixing rods, which pass through the longitudinally stacked filter media in sequence to fix and position the filter media.

[0014] Preferably, baffles are fixed to both ends of the crossbeam, and the baffles abut against and are fixed to the side of the lean liquid tank, thereby suspending and fixing the fixing frame in the lean liquid tank.

[0015] Preferably, the bottom end of the frame is provided with a gap from the bottom end of the lean liquid tank.

[0016] Preferably, considering the interception effect of the lean liquid pool, the filter element can be periodically removed, cleaned, and reused according to the amount of carbon deposits.

[0017] Preferably, if gold recovery is considered, the filter element is periodically removed and the filter media is replaced, and the replaced filter media is recycled as gold-containing material.

[0018] Compared with the prior art, the present invention has the following advantages and technical effects: The present invention discloses a device for collecting pulverized carbon by filter media deposition in lean liquid, mainly composed of a detachable fixing frame and a filter element. The fixing frame is designed to be suspended and installed in the lean liquid tank, ensuring the stability of the entire filtration system. Even when the water level and flow rate change due to prolonged rainfall or other reasons, the device can maintain stable operation. At the same time, the fixing frame does not contact the bottom of the lean liquid tank, avoiding contact with carbon and sludge accumulation, thereby reducing cleaning workload and downtime. The filter element is detachably connected to the fixing frame. The internal design makes filter replacement simple and quick, ensuring that the filter can be easily replaced to maintain its filtration effect, thereby reducing maintenance costs and time. The filter is immersed in the lean liquor tank, and its main function is to filter the powdered carbon in the lean liquor. Through the filtration action of the filter, it can effectively capture the fine and difficult-to-settle powdered carbon in the lean liquor, preventing it from deteriorating the heap leaching efficiency as it is carried up with the lean liquor. After use, the filter can be periodically rinsed for reuse according to actual needs, or the filter with powdered carbon deposits can be air-dried and disassembled, and the filter media can be sold as gold-containing materials, thereby maximizing the utilization of resources.

[0019] This invention has a simple structure, is flexible in use, has high filtration efficiency, is easy to maintain, and has good stability. It can effectively filter powdered carbon in the lean liquid tank. At the same time, the operation process is a physical process and does not produce dangerous gases, thus improving the safety of the device. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In the drawings:

[0021] Figure 1 This is a schematic diagram of the apparatus for collecting powdered carbon by filter media deposition in lean liquid according to the present invention;

[0022] Figure 2 This is a front view of the mounting bracket of the present invention;

[0023] Figure 3 This is an axial view of the filter element of the present invention;

[0024] Figure 4 This is a schematic diagram of the cross-section of the filter element of the present invention;

[0025] Figure 5 For the present invention Figure 4 A magnified view of part A in the image;

[0026] In the diagram: 1. Fixing frame; 2. Filter element; 3. Lean solution tank; 11. Frame; 12. Crossbeam; 13. Reinforcing rod; 14. Baffle; 15. Contact pad; 21. Filter frame; 22. Filter media; 23. Fixing rod; 24. Filter skeleton; 25. Side plate. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] Reference Figures 1 to 5 As shown, this embodiment provides an apparatus for collecting char powder by filter media deposition in lean solution, comprising:

[0030] The fixing frame 1 is suspended inside the lean liquid tank 3, which fixes the entire filtration system to the lean liquid tank 3 to ensure the stability of the device;

[0031] Filter element 2 is detachably connected to the fixing frame 1. Filter element 2 is immersed in the lean liquid tank 3 and is used to filter the powdered carbon in the lean liquid tank 3.

[0032] This invention discloses a device for collecting powdered carbon by filter media deposition in a lean solution. It mainly consists of a detachable mounting frame 1 and a filter element 2. The mounting frame 1 is designed to be suspended and installed within a lean solution tank 3, ensuring the stability of the entire filtration system. Even when water level and flow rate change due to prolonged rainfall or other reasons, the device can maintain stable operation. Simultaneously, the mounting frame 1 does not contact the bottom of the lean solution tank 3, avoiding contact with accumulated carbon and sludge, thereby reducing cleaning workload and downtime. The filter element 2 is detachably connected to the mounting frame 1, making filter element 2 replacement simple and quick, ensuring that the filter element 2 can be easily replaced to maintain its filtration efficiency. The filter element 2 is immersed in the lean liquor tank 3, and its main function is to filter carbon powder in the lean liquor. Through the filtration action of the filter element 2, fine and difficult-to-settle carbon powder in the lean liquor can be effectively captured, preventing it from deteriorating the heap leaching efficiency as it is carried up with the lean liquor. After use, the filter element 2 can be periodically rinsed for reuse according to actual needs, or the filter element 2 with carbon powder deposits can be air-dried and disassembled, and the filter material 22 can be sold as a gold-containing material, thereby maximizing resource utilization. The device achieves the purpose of efficiently and stably capturing carbon powder in the lean liquor tank 3 through the design of the suspended fixed frame 1 and the detachable filter element 2. The fixed frame 1 ensures the stability of the device, while the detachable filter element 2 facilitates replacement and maintenance, improving the efficiency and lifespan of the device. The present invention has a simple structure, is flexible in use, has high filtration efficiency, is easy to maintain, and has good stability. It can effectively filter carbon powder in the lean liquor tank 3, and the operation process is a physical process that does not produce dangerous gases, thus improving the safety of the device.

[0033] In one embodiment of the invention, the fixing frame 1 will be installed on both sides of the return water bend of the lean liquid tank 3, as close as possible to the reinforcing ribs, to ensure its stability and load-bearing capacity. By installing the fixing frame 1 at key locations in the lean liquid tank 3, the natural flow characteristics of the fluid can be utilized to the maximum extent, making the sedimentation process more efficient.

[0034] The design is further optimized by including a longitudinally arranged frame 11 in the mounting bracket 1. The lower part of the frame 11 is immersed in the lean liquid tank 3. The filter element 2 is detachably connected to and locked within the frame 11. The mounting bracket 1 serves as the fixed structure of the device, responsible for supporting and stabilizing the entire filtration system. The frame 11 is the main structure of the mounting bracket 1, a longitudinally arranged rectangular support. The filter element 2 is longitudinally inserted into the frame 11 and can be easily disassembled, further improving the stability and filtration efficiency of the device. The locking design of the filter element 2 ensures its stability during the filtration process, preventing it from falling off or shifting.

[0035] Further optimizing the design, the mounting frame 1 also includes a horizontal beam 12 vertically mounted at the top of the frame 11. The horizontal beam 12 is reinforced to the side wall of the frame 11 by reinforcing rods 13. The two ends of the horizontal beam 12 are fixed to the inner walls of the lean liquid tank 3. The horizontal beam 12 is vertically fixed to the top of the frame 11, forming a T-shaped structure for the mounting frame 1, which facilitates its fixation in the lean liquid tank 3 and improves the positioning accuracy and stability of the device. The reinforcing rods 13 between the horizontal beam 12 and the frame 11 enhance the connection strength, further strengthening the stability and load-bearing capacity of the mounting frame 1, and ensuring the long-term stable operation of the device in the lean liquid tank 3.

[0036] Further optimizing the design, baffles 14 are fixed to both ends of the crossbeam 12. The baffles 14 are fixed against the side of the lean liquid tank 3, suspending and fixing the fixing frame 1 in the lean liquid tank 3. The baffles 14 are fixed to both ends of the crossbeam 12 and are equipped with fixing bolts for nailing the side plates of the lean liquid tank 3, so that the fixing frame 1 is completely fixed. The contact part between the baffles 14 and the lean liquid tank 3 is equipped with rubber contact pads 15 to make the contact tighter and the pressure distribution more uniform.

[0037] In one embodiment of the present invention, since the lean liquid tank 3 is a high alkalinity environment, the fixing frame 1 is made of 304 stainless steel in order to enable the device to be used for a long time.

[0038] Further optimization of the design involves setting a gap between the bottom end of frame 11 and the bottom end of the lean liquid tank 3. The mounting bracket 1 is a suspended design; after installation, a gap of approximately 0.5m is maintained between the bottom end of frame 11 and the bottom end of the lean liquid tank 3, avoiding direct contact and friction between the device and the bottom of the lean liquid tank 3, thus reducing wear and maintenance costs. This design also helps improve the stability and filtration efficiency of the device.

[0039] In one embodiment of the present invention, the gap between the bottom end of the frame 11 and the bottom end of the lean liquid tank 3 is designed considering several factors. First, the bottom of the lean liquid tank 3 has accumulated carbon and sludge, and the bottom is not flat. If the device is placed directly on the bottom of the tank, it will require frequent cleaning, increasing the workload significantly, and the cleaning process will require stopping production and interrupting the flow, affecting production efficiency. Second, if the device is placed at the bottom, its vertical shape and large cross-section facing the direction of water flow will easily lead to instability. In this case, it is necessary to connect it to the partition plate with tie rods or other connectors to ensure its stability, but this method will increase the complexity of installation and reduce the ease of use of the device. Finally, the flow rate of the lean liquid tank 3 is relatively large (3600 m³ / h). 3 The flow rate is relatively low (0.03 m / s), but the flow velocity is low (0.03 m / s), which has little impact on the thrust of the device, making the suspension design a feasible option.

[0040] In one embodiment of the present invention, if the overall water level and flow velocity of the beneficiation system increase due to prolonged rainfall or other reasons, it may affect the stability of the device. Therefore, the device should be checked regularly for any tilting, and measures should be taken as necessary to ensure its stability and the safety of the production process.

[0041] Further optimization of the design: Filter element 2 includes a filter frame 21 adapted to frame 11, which is detachably connected to frame 11; filter media 22 is arranged in a longitudinally reciprocating stack within frame 11, and the filter media 22 is used to filter the powdered carbon in the lean liquid tank 3. Filter frame 21 serves as the skeleton structure of filter element 2, and its internal dimensions are adapted to frame 11, allowing filter frame 21 to be detachably connected to frame 11, facilitating replacement and maintenance of filter element 2 and reducing operating costs; filter media 22 is an integral structure, fixed in filter frame 21 by longitudinal stacking, increasing the filtration area and filtration efficiency of filter element 2; during operation, filter element 2 is immersed below the liquid surface of lean liquid tank 3, with its flow area facing the water flow direction, and filter media 22 intercepts the carbon powder in the water flow, accumulating it in the stacked folds.

[0042] In one embodiment of the present invention, when the filter media 22 are stacked horizontally, after being soaked in water, the filter media 22 are squeezed and pressed together longitudinally, resulting in poor filtration effect. However, in this embodiment, when the filter media 22 are stacked vertically, there is no longitudinal pressure after being soaked in water. The impact of the water flow will cause the folds and gaps between the filter media 22 to be opened, allowing the powdered carbon suspended in the lean solution tank 3 to be deposited in the interlayer of the filter media 22 by probability. This prevents the deterioration of the heap leaching efficiency as the lean solution is piled up, and also allows for the recovery of some of the gold in the powdered carbon.

[0043] Further optimization of the scheme: the filtration accuracy of filter media 22 is no less than 5 times that of powdered carbon D80. To ensure the filtration effect of powdered carbon, the filtration accuracy of filter media 22 is no less than 1.5 times that of powdered carbon D80, ensuring the device's efficient collection capacity of powdered carbon, helping to reduce the powdered carbon content in lean liquor and improve heap leaching efficiency.

[0044] In one embodiment of the present invention, the filter material 22 is made of polypropylene nonwoven filter material 22. While ensuring filtration accuracy, its corrosion resistance can also ensure the service life of the filter material 22 in highly alkaline water.

[0045] In one embodiment of the present invention, the filter frame 21 includes a filter skeleton 24 welded from hollow stainless steel tubes, and side plates 25 are respectively provided on both sides of the filter skeleton 24 to form a cylindrical structure; the filter material 22 is stacked longitudinally to block the flow area of ​​the cylindrical structure and filter the flowing water.

[0046] To further optimize the design, the filter frame 21 is equipped with several horizontally arranged fixing rods 23. These fixing rods 23 pass through the vertically stacked filter media 22, securing and positioning the filter media 22. The ends of the horizontal fixing rods 23 pass through the side plates 25 on both sides, and sequentially through the vertically stacked filter media 22. This ensures the stability and positioning accuracy of the filter media 22 within the filter frame 21, allowing it to maintain its shape after immersion in water. This prevents the filter media 22 from falling off or shifting, thus contributing to improved filtration efficiency and stability of the filter element 2.

[0047] To further optimize the solution, if the interception effect of the lean solution tank 3 is considered, the filter element 2 can be periodically removed, cleaned, and reused based on the amount of charcoal deposits. If gold recovery is considered, the filter element 2 can be periodically removed and the filter media 22 replaced, with the replaced filter media 22 being recovered as gold-containing material. After the equipment has been running for a period of time, the amount of charcoal deposits on the filter media 22 gradually increases, affecting the filtration efficiency, requiring periodic treatment. Specifically, if the interception effect is considered, the filter element 2 can be periodically removed, cleaned, and reintroduced into the lean solution tank 3 for filtration based on the amount of charcoal deposits. If the gold contained in the charcoal is to be recovered, the filter element 2 can be removed, air-dried, and then the filter media 22 can be removed from the filter frame 21 and sold as gold-containing material. Detailed implementation method:

[0049] The fixing frame 1 is suspended and fixed in the lean liquid tank 3, so that the bottom end of the frame 11 is immersed below the liquid surface of the lean liquid tank 3, and the bottom end of the frame 11 is in contact with the lean liquid tank 3.

[0050] The filter element 2 is hoisted along the frame 11 and placed into the lean liquid tank 3 and then locked and fixed.

[0051] Remove filter element 2 periodically, and rinse or air dry as needed before selling it as a gold-containing material.

[0052] In one embodiment of the present invention, during specific use, when testing the gold content of the filter material 22, after removing the filter element 2 and ensuring no standing water is detected, six sampling points are evenly distributed on the filter material 22. The material is then cut to a depth of at least 0.1 mm with scissors. 2 Total 0.6m 2 The above 22 filter media samples were first dried and tested for moisture content. Then, the gold content of the dried samples was tested by flame atomic absorption spectrometry, as shown in Table 4.1.

[0053] Table 4.1 Sampling and testing of moisture and gold content in filter media 22

[0054]

[0055] As can be seen from the table, the gold content is higher closer to the bottom. This is because after being removed from the lean liquid tank 3, the lean liquid flows downwards, carrying more powdered carbon to the bottom. In a specific semi-industrial test, 30% of the powdered carbon in the lean liquid was recovered after 72 hours. Calculated that the water-facing area of ​​filter element 2 accounts for 10% of the entire lean liquid flow cross-section, it can retain 3% of the total powdered carbon in the lean liquid flow, and the dry heavy gold content of filter material 22 reaches 20 g / t.

[0056] In one embodiment of the present invention, when measuring the amount of carbon deposited on the filter media 22, three samples (0.3m × 1m long strips longitudinally and 0.3m × 1.5m long strips laterally) need to be collected from the filter media 22, dried, and weighed. The amount of carbon deposited is obtained by subtracting the carbon deposit from the carbon deposited on the filter media 22 of the same area, and then the amount of carbon deposited per unit area is calculated. Using this index and the areal density of the filter media 22, the amount of carbon deposited per unit mass of filter media 22 can be estimated. The amount of adsorbed carbon can be obtained from the total area of ​​the filter media 22, and compared with the total amount of carbon flowing through the interface, the carbon recovery rate can be obtained. First, the carbon deposition effect in a unidirectional water-facing direction was tested, as shown in Table 4.2.

[0057] Table 4.2 Results of unidirectional water-facing pulverized carbon deposition test

[0058]

[0059]

[0060] The basic data for the calculation are: lean liquor flow rate 0.03 m / s, and powdered activated carbon concentration 2.3 g / m³. 3 Frame 11 is 1.5m long, 1.0m high, and has a water-facing area of ​​1.5m². 2 Filter media 22 has a surface density of 443 g / m³. 2 Each filter element has an unfolded area of ​​75m². 2 .

[0061] Afterwards, we tried to take out the filter element 2 and turn it over after 48 hours to observe whether it could adsorb more carbon powder. The results are shown in Table 4.3.

[0062] Table 4.3 Results of bidirectional water-facing pulverized carbon deposition test

[0063]

[0064] Based on the above experimental results, the following conclusions can be drawn:

[0065] (1) The amount of pulverized carbon deposited (including the amount of deposited per unit area and the amount of deposited per unit mass) showed a trend of first fast and then slow over time, while the recovery rate of pulverized carbon showed a rapid decline at first and then gradually leveled off.

[0066] (2) The variation pattern of gold content with deposition time is basically consistent with the variation trend of pulverized carbon content. Within 72 hours, the gold content of the sediment reached 21 g / t.

[0067] (3) The flipping operation had little effect on increasing the amount of pulverized carbon deposits and the gold content. This may be because, although flipping increases the amount of deposits on the original back side, it also washes away some of the pulverized carbon deposits on the original front side. Overall, the flipping operation did not significantly improve the effect, and in actual operation, it may be considered not to flip it.

[0068] (4) Based on a 72-hour recovery filter of 30%, and the water-facing area of ​​filter element 2 accounting for 10% of the entire lean liquid flow cross section, it can retain 3% of the total amount of carbon powder in the lean liquid flow.

[0069] (5) Considering the low grade and high water content, it is not realistic to sell the filter element 2 with deposited carbon powder as a gold-containing material. It is probably better to use water to rinse the carbon powder (without considering recycling) and reuse the filter material 22 to intercept the carbon powder.

[0070] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "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, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0071] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A device for collecting pulverized carbon by filter media deposition in a lean solution, characterized in that, include: A fixing frame (1) is suspended in the lean liquid tank (3) to fix the entire filtration system in the lean liquid tank (3) and ensure the stability of the device. The filter element (2) is detachably connected to the fixed frame (1) and is immersed in the lean liquid tank (3) for filtering the powdered carbon in the lean liquid tank (3).

2. The apparatus for collecting pulverized carbon by filter media deposition in lean liquor according to claim 1, characterized in that: The fixing frame (1) includes a longitudinally arranged frame (11), the lower part of which is immersed in the lean liquid pool (3), and the filter element (2) is detachably connected to the frame (11) and locked.

3. The apparatus for collecting charcoal powder by filter media deposition in lean liquor according to claim 2, characterized in that: The fixing frame (1) also includes a crossbeam (12) vertically arranged at the top of the frame (11), and the crossbeam (12) is reinforced with the side wall of the frame (11) by a reinforcing rod (13); the two ends of the crossbeam (12) are abutted and fixed to the two ends of the inner wall of the lean liquid tank (3).

4. The apparatus for collecting pulverized carbon by filter media deposition in lean liquor according to claim 2, characterized in that: The filter element (2) includes a filter frame (21) adapted to the frame (11), the filter frame (21) being detachably connected to the frame (11); the frame (11) is provided with longitudinally reciprocatingly stacked filter media (22), the filter media (22) being used to filter the powdered carbon in the lean liquid tank (3).

5. The apparatus for collecting charcoal powder by filter media deposition in lean liquor according to claim 4, characterized in that: The filtration accuracy of the filter material (22) is not less than 1.5 times that of powdered carbon D80.

6. The apparatus for collecting pulverized carbon by filter media deposition in lean liquor according to claim 4, characterized in that: The filter frame (21) is provided with several horizontally arranged fixing rods (23), which pass through the longitudinally stacked filter media (22) in sequence to fix and position the filter media (22).

7. The apparatus for collecting pulverized carbon by filter media deposition in lean liquor according to claim 3, characterized in that: The two ends of the crossbeam (12) are respectively fixed with baffles (14), the baffles (14) abut against and are fixed to the side of the lean liquid tank (3), and the fixing frame (1) is suspended and fixed in the lean liquid tank (3).

8. The apparatus for collecting pulverized carbon by filter media deposition in lean liquor according to claim 2, characterized in that: The bottom end of the frame (11) is spaced from the bottom end of the lean liquid tank (3).

9. The apparatus for collecting charcoal powder by filter media deposition in lean liquor according to claim 4, characterized in that: If the interception effect of the lean liquid pool (3) is taken into consideration, the filter element (2) can be periodically removed, cleaned, and reused according to the carbon deposit situation.

10. The apparatus for collecting charcoal powder by filter media deposition in lean liquor according to claim 4, characterized in that: If gold recovery is considered, the filter element (2) is periodically removed and the filter material (22) is replaced, and the replaced filter material (22) is recycled as gold-containing material.

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