A cyanide adsorption device for gold mine and integrated system thereof

Abstract

The application provides a gold mine cyanidation adsorption device and an integrated system thereof, and relates to the technical field of gold mine cyanidation gold extraction equipment. The gold mine cyanidation adsorption device comprises an adsorption tank body, a closed protection assembly arranged on the adsorption tank body, a carbon interception and filtration assembly, and an equalizing flow channel adsorption assembly. The closed protection assembly is arranged on the top end of the adsorption tank body. The carbon interception and filtration assembly is detachably arranged at the poor liquid overflow outlet of the adsorption tank body. The equalizing flow channel adsorption assembly is arranged in the internal working area of the adsorption tank body. The device uses the closed protection assembly to block the escape of toxic gas, ensuring the safety of operation. The detachable carbon interception and filtration assembly intercepts carbon powder and prevents resource loss. The assembly is easy to disassemble and maintain to keep the liquid flow smooth. The internal equalizing flow channel adsorption assembly evenly divides the flow of the rich liquid, improves the flow field distribution, eliminates carbon mud deposition, ensures the full and uniform contact between the medium and the liquid, and further eliminates adsorption short circuit, thereby significantly improving the overall adsorption recovery efficiency.

Description

Technical Field

[0001] This invention relates to the field of gold cyanide extraction equipment, and in particular to a gold cyanide adsorption device and its integrated system. Background Technology

[0002] In gold extraction processes, adsorption devices are typically used to treat gold-bearing solutions. This process primarily utilizes adsorption media such as activated carbon to ensure sufficient contact between the adsorption medium and the solution within a specific container, thereby achieving efficient enrichment and extraction of precious metals. The internal structure and operating status of the adsorption device directly affect the continuity of the overall gold extraction process and the final extraction efficiency.

[0003] Currently, conventional gold ore cyanide adsorption equipment mainly consists of a basic tank, inlet and outlet pipes, and a fixed carbon-blocking filter screen installed at the outlet. During production, the precious liquid enters the tank and mixes with activated carbon to carry out the adsorption reaction. The treated lean liquid is discharged through the filter screen, while the gold-loaded carbon retained in the tank or transferred later, thus completing the contact and separation of gas, liquid, and solid.

[0004] However, existing equipment has gradually revealed many limitations in actual continuous operation. First, most conventional adsorption tanks adopt an open structure, which can easily lead to the release of toxic gases during the treatment of cyanide-containing materials, posing a safety hazard. Second, existing fixed carbon intercepting filters are prone to clogging after long-term operation, and cleaning and maintenance are cumbersome. This not only easily leads to poor water flow and adsorption short circuits, but also causes fine carbon powder to be lost with the lean solution. In addition, the flow channel structure design inside conventional tanks is relatively simple, often resulting in uneven distribution of activated carbon and local carbon sludge deposition, insufficient contact between the precious solution and activated carbon, which restricts the improvement of adsorption efficiency and gold recovery rate.

[0005] In summary, traditional adsorption devices have significant shortcomings in terms of gas containment protection, ease of maintenance of solid-liquid separation components, and uniformity of fluid dynamics within the tank. These structural deficiencies can easily lead to risks in the working environment, as well as unintended losses of the adsorption medium and low overall system efficiency, which urgently need to be overcome through targeted structural design. Summary of the Invention

[0006] The purpose of this invention is to provide a gold ore cyanide adsorption device and its integrated system. The device integrates an internal flow channel structure that is sealed to prevent gas escape, detachable and efficient carbon interception, and pressure equalization and diversion to prevent deposition. While ensuring operational safety and convenient daily maintenance, it significantly improves the uniformity of activated carbon distribution and overall adsorption and recovery efficiency.

[0007] In a first aspect, the present invention provides a gold ore cyanide adsorption device, comprising an adsorption tank, and a sealed protection component, a carbon interception and filtration component, and a balanced flow channel adsorption component disposed on the adsorption tank. The sealed protective component is located at the top of the adsorption tank; The carbon interception and filtration assembly is detachably installed at the lean liquid overflow outlet of the adsorption tank. The equalization flow channel adsorption component is located in the internal working area of ​​the adsorption tank and is used to equalize and divide the precious liquid entering the adsorption tank.

[0008] In an optional embodiment, the balanced flow channel adsorption assembly includes a carbon-separating plate disposed within the adsorption tank. The carbon separator plate has multiple precious liquid inlets; the multiple precious liquid inlets together form a pressure equalization hole matrix.

[0009] In an optional embodiment, the inlet of the precious liquid is provided with an inlet pipe, a pipe plug, and a sealing ring to prevent activated carbon from leaking into the inlet area.

[0010] In an optional embodiment, the carbon-blocking filter assembly includes a filter frame and a double-layer composite filter. The double-layer composite filter screen is installed inside the filter screen frame; The dual-layer composite filter screen includes a lower filter screen and an upper filter screen; wherein, the lower filter screen is an 80-120 mesh stainless steel sintered mesh, and the upper filter screen is a 20-50 mesh modified activated carbon filter cotton.

[0011] In an optional embodiment, the carbon interception and filtration assembly further includes a screen cleaning device; The screen cleaning device is located on the side of the double-layer composite filter screen and is used to clean the carbon powder intercepted on the surface of the filter screen.

[0012] In an optional embodiment, the hermetic protective assembly includes an arc-shaped integrated sealing protective cover; The arc-shaped integrated sealed protective cover is equipped with a sealing rubber gasket, a quick-locking buckle, and an explosion-proof observation window; The top of the arc-shaped integrated sealed protective cover is provided with a square mounting groove for installing the carbon interception filter assembly.

[0013] In an optional embodiment, the gold ore cyanide adsorption device further includes a stirring and aeration assembly; the stirring and aeration assembly is built into the adsorption tank and includes a variable frequency motor, a hollow stirring shaft, a double-layer spiral impeller, an annular aeration pipe, and a microporous aeration head; and / or, The bottom of the adsorption tank has a circular arc flow guiding structure; the bottom of the tank is equipped with a carbon sludge discharge pipe; and / or... The adsorption tank is also equipped with a water-permeable pipe; the pipe wall is evenly provided with multiple water-permeable holes, and the outside of the water-permeable pipe is wrapped with a screen to prevent gold-loaded carbon from entering; and / or, The adsorption tank is also equipped with a backflow prevention baffle on its side wall.

[0014] In a second aspect, the present invention provides an integrated gold ore cyanide adsorption system, comprising a plurality of gold ore cyanide adsorption devices arranged in series as described in any of the foregoing embodiments, as well as a carbon conveying assembly and a wastewater purification assembly. The multiple gold ore cyanide adsorption devices are connected to each other via the carbon conveying assembly for conveying gold-loaded carbon. The wastewater purification component is connected to the sealed protection component of the multiple gold ore cyanide adsorption devices for centralized treatment of waste gas.

[0015] In an optional embodiment, the carbon conveying assembly includes a carbon lifter, a gold-loaded carbon conveying trough, and a pneumatic valve. The carbon extractor is equipped with a gas-water-carbon mixing chamber and a gas-water separation chamber.

[0016] In an optional embodiment, the carbon conveying assembly further includes a high-pressure air inlet and a high-pressure water inlet; The gold-loaded carbon conveying trough is connected to the high-pressure water inlet and the high-pressure air inlet via the pneumatic valve.

[0017] In an optional embodiment, the gold ore cyanide adsorption integrated system further includes a wastewater purification component; The wastewater purification component includes a waste gas guide pipe connected to the sealed protection component, and an alkaline purification and recovery box connected to the waste gas guide pipe.

[0018] The gold ore cyanide adsorption device provided by this invention achieves effective physical isolation between the internal working space of the equipment and the external environment by setting a sealed protective component at the top of the adsorption tank. This effectively blocks the unorganized release of highly toxic hydrogen cyanide gas during cyanide-containing operations, overcomes the serious safety hazards brought about by traditional open structures, and provides reliable safety and environmental protection for continuous production.

[0019] The detachable carbon interception filter assembly, located at the lean liquid overflow outlet, can precisely intercept activated carbon and fine carbon powder at the liquid outflow end, avoiding resource waste caused by the large-scale loss of adsorption media with the liquid flow. The detachable design of this assembly significantly reduces the cleaning difficulty caused by the blockage of the fixed filter screen due to deposits, effectively shortens the downtime maintenance cycle, and ensures the long-term smooth operation of the system's liquid flow.

[0020] The addition of a balanced flow channel adsorption component in the internal working area significantly optimizes the fluid dynamics distribution within the tank. This component performs pressure equalization and flow diversion treatment on the precious liquid entering the tank, resulting in a more uniform flow field distribution and preventing the formation of local stagnant zones and the excessive deposition of carbon sludge. This homogenized flow characteristic ensures that the adsorption medium maintains a good suspended and dispersed state in the liquid phase, greatly increasing the effective contact area between the liquid and activated carbon, eliminating adsorption short-circuiting phenomena, and thus significantly improving the overall adsorption efficiency and target metal recovery rate. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of the gold ore cyanide adsorption device provided in an embodiment of the present invention; Figure 2 A schematic diagram of the connector of the balanced flow channel adsorption assembly provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the water inlet pipe provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the carbon interception and filtration assembly provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the sealed protection assembly provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the integrated gold ore cyanide adsorption system provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the carbon collector provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the gold-loaded carbon conveying trough provided in an embodiment of the present invention.

[0023] Icons: 100-Gold ore cyanide adsorption integrated system; 1-Gold ore cyanide adsorption device; 11-Adsorption tank; 111-Carbon sludge discharge pipe; 12-Sealed protective assembly; 121-Arc-shaped integrated sealed protective cover; 1211-Sealing rubber gasket; 1212-Quick locking buckle; 1213-Explosion-proof observation window; 1214-Square embedding groove; 13-Carbon intercepting filter assembly; 131-Filter screen frame; 132-Double-layer composite filter screen; 1321-Upper filter screen; 1322-Lower filter screen; 133-Screen cleaning device; 14-Equalizing flow channel adsorption assembly; 141-Carbon separating plate; 142-Precious liquid inlet; 1421-Inlet pipe; 1422-Pipe plug; 1423-Sealing ring; 143-Pressure equalizing hole matrix; 2-Carbon conveying assembly; 21-Carbon lifter; 211-Gas-water-carbon mixing chamber; 212-Gas-water separation chamber; 22-Gold-loaded carbon conveying trough; 23-Pneumatic valve; 3-Sewage discharge and purification assembly; 31-Waste gas guide pipe; 32-Alkaline purification and recovery box. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed during use. They are only for the convenience of describing this invention and simplifying the description, 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 invention.

[0028] In the description of this invention, 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 invention based on the specific circumstances.

[0029] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0030] refer to Figure 1 This application provides a gold ore cyanide adsorption device 1, which aims to solve the technical defects of existing open adsorption equipment, such as the escape of toxic gases, uneven gas-liquid-solid reaction, and loss of medium.

[0031] The gold ore cyanide adsorption device 1 includes an adsorption tank 11, and a sealed protection component 12, a carbon interception and filtration component 13, and a balanced flow channel adsorption component 14 disposed on the adsorption tank 11.

[0032] In some preferred embodiments, the main body of the adsorption tank 11 is made of Q235 carbon steel, and the inner wall of the adsorption tank 11 is provided with a polyurethane anti-corrosion coating with a thickness of 8mm to adapt to the highly corrosive working environment of cyanide slurry.

[0033] The sealed protective component 12 is sealed and covered at the top of the adsorption tank 11; The carbon interception and filtration assembly 13 is detachably installed at the lean liquid overflow outlet of the adsorption tank 11. The equalization flow channel adsorption component 14 is disposed in the internal working area of ​​the adsorption tank 11 and is used to equalize and divide the precious liquid entering the adsorption tank 11.

[0034] Specifically, the sealed protective component 12 is located at the top opening of the adsorption tank 11. In actual assembly, a flange connection supplemented with a corrosion-resistant elastic sealing gasket can effectively physically isolate the gas phase space at the top of the tank from the external operating environment, thereby effectively preventing the leakage of highly toxic gases generated by the volatilization of cyanide-containing precious liquid during adsorption operations and ensuring the operational safety of the working environment.

[0035] At the final discharge point, the carbon intercepting filter assembly 13 is detachably installed at the lean liquid overflow outlet of the adsorption tank 11. This assembly uses a physical filter to intercept activated carbon particles and fine carbon powder accompanying the lean liquid overflow, preventing the loss of gold-loaded resources. Its "detachable" structural design (such as using a tool-less guide rail frame or a quick-release structure) allows the filter media to be quickly extracted and replaced as a whole when pore blockage occurs, significantly reducing equipment downtime for cleaning and ensuring long-term smooth flow of fluid channels.

[0036] To optimize the fluid dynamics distribution within the tank, the equalization flow channel adsorption component 14 is positioned within the working area of ​​the adsorption tank 11 to equalize and distribute the precious liquid entering the tank. During operation, after the gold-containing precious liquid enters the adsorption tank 11, it first undergoes fluid distribution through the equalization flow channel adsorption component 14. This component, through a specific equal pressure drop flow channel structure, converts the single, concentrated inflow into multiple uniformly distributed upward fine streams across the cross-section, ensuring consistent static pressure across all areas of the tank. This uniform upward flow field provides a stable and uniform fluid lifting force for the internal granular activated carbon, promoting its overall suspension and dispersion. This effectively avoids the formation of local stagnant zones and carbon sludge deposition, significantly increasing the effective contact interface between the liquid and solid phases, thereby significantly improving the overall gold recovery rate and adsorption efficiency of the device.

[0037] In summary, this device achieves physical isolation of the top of the tank through the sealed protective component 12, effectively blocking the escape of toxic gases and significantly improving the safety and environmental protection level of the working environment; the detachable carbon interception filter component 13 installed at the discharge port can accurately intercept fine carbon powder, avoid resource loss, and greatly reduce the difficulty of cleaning and maintenance after the filter screen is blocked, ensuring long-term smooth liquid flow; at the same time, the balanced flow channel adsorption component 14 in the internal working area performs pressure equalization and diversion of the incoming precious liquid, optimizes the fluid dynamics distribution in the tank, eliminates local dead water areas and carbon sludge deposition, and ensures that the liquid and activated carbon are in full and uniform contact, thereby avoiding adsorption short circuits and greatly improving the overall adsorption efficiency and target metal recovery rate.

[0038] In some implementations, reference Figure 2 The equal flow channel adsorption component 14 includes a carbon separator plate 141 disposed in the adsorption tank 11; the carbon separator plate 141 is provided with a plurality of precious liquid inlets 142; the plurality of precious liquid inlets 142 together form a pressure equalization hole matrix 143.

[0039] In the actual equipment structure, the carbon separator plate 141 is usually horizontally fixed at a specific elevation inside the tank, physically dividing the tank interior into a lower water inlet guide zone and an upper main adsorption working zone. To achieve uniform fluid distribution, multiple precious liquid inlets 142 are provided through the carbon separator plate 141.

[0040] Specifically, multiple precious liquid inlets 142 are arranged regularly on the surface of the carbon separator 141 according to a predetermined geometric topology (e.g., concentric rings, orthogonal grids, or radial distribution), thus forming a pressure equalization hole matrix 143. During actual operation, the gold-containing precious liquid introduced from the bottom surges upward, is obstructed by the carbon separator 141, and is forced to pass uniformly through the pressure equalization hole matrix 143. Utilizing the pressure drop throttling effect generated when the fluid flows through the regular holes, the originally irregular liquid flow concentrated at the bottom is dispersed and rectified, transforming into multiple upward fine streams with similar flow velocities and uniform pressure on the upper cross section.

[0041] The stable upward flow field formed after rectification by the pressure-equalizing orifice matrix 143 provides uniform fluid lifting force to the granular activated carbon in the upper working area, promoting good global suspension and dispersion of the adsorption medium in the liquid phase. This optimized flow channel structure effectively avoids dead water zones and carbon sludge deposition caused by excessively low local flow velocities, while ensuring sufficient contact and mass transfer at the solid-liquid interface, helping to reduce the adsorption pressure difference and improve the overall gold recovery rate of the system.

[0042] In some implementations, reference Figure 3 To further optimize the operational stability of the balanced flow channel adsorption component 14 and prevent abnormal sedimentation and backflow of the solid medium, the precious liquid inlet 142 is provided with an inlet pipe 1421, a pipe plug 1422 and a sealing ring 1423 to prevent activated carbon from leaking into the inlet area.

[0043] In the specific assembly and connection, the water inlet pipe 1421 is inserted into or fastened to each precious liquid inlet 142 on the carbon separator plate 141, serving as a flow channel for the fluid to flow from bottom to top through the carbon separator plate 141. The pipe plug 1422 is installed at the upper end of the water inlet pipe 1421 or inside the channel, forming a flow obstruction baffle or a detour flow channel; the sealing ring 1423 is sandwiched between the mechanical assembly joint surfaces of the water inlet pipe 1421, the pipe plug 1422, and the carbon separator plate 141.

[0044] Under both operating and shutdown conditions, this structural assembly achieves a leak-proof mechanism through physical synergy. When the precious liquid containing gold is pressurized and transported upwards, the liquid flows along the inlet pipe 1421, bypassing the pipe plug 1422, and enters the upper working area, ensuring a stable and uniform fluid output. When the system experiences pressure fluctuations or shutdown causing the fluid to stagnate, the suspended granular activated carbon in the upper working area settles due to gravity. At this time, the pipe plug 1422 forms a downward physical barrier interface, preventing activated carbon particles from falling directly into the pipe opening. Simultaneously, the sealing ring 1423 fills the rigid assembly gaps between components through elastic deformation, effectively cutting off the bypass channels for fine particles and slurry to penetrate downwards. Through the cooperation of the inlet pipe 1421, pipe plug 1422, and sealing ring 1423, a reliable unidirectional flow guidance and backflow prevention barrier is constructed, effectively preventing activated carbon from sinking and leaking into the bottom inlet area, thereby maintaining the cleanliness and smoothness of the bottom flow space within the tank.

[0045] In some implementations, in order to achieve efficient solid-liquid separation and prevent the loss of gold-loaded material, reference is made to... Figure 4 The carbon interception and filtration assembly 13 includes a filter frame 131 and a double-layer composite filter 132; The double-layer composite filter 132 is installed inside the filter frame 131; The double-layer composite filter 132 includes a lower filter 1322 and an upper filter 1321; wherein, the lower filter 1322 is a sintered stainless steel mesh of 80-120 mesh (for example, it can be 80 mesh, 85 mesh, 90 mesh, 95 mesh, 100 mesh, 105 mesh, 110 mesh, 115 mesh, 120 mesh, etc.), and the upper filter 1321 is a modified activated carbon filter cotton of 20-50 mesh (for example, it can be 20 mesh, 24 mesh, 28 mesh, 32 mesh, 36 mesh, 40 mesh, 44 mesh, 48 mesh, 50 mesh, etc.).

[0046] In actual structural assembly, the double-layer composite filter 132 is laid and fixedly installed in the inner cavity of the filter frame 131, using the filter frame 131 to provide overall structural rigidity and installation boundaries. The double-layer composite filter 132 adopts a gradient filtration design in the fluid flow direction, specifically including an adjacent lower filter 1322 and an upper filter 1321. The lower filter 1322 is made of 80-120 mesh stainless steel sintered mesh, and the upper filter 1321 is made of 20-50 mesh modified activated carbon filter cotton.

[0047] During the overflow and drainage phase of the equipment operation, the liquid carrying the solid adsorption medium first contacts the lower filter screen 1322. Utilizing the high mechanical strength and suitable pore size of the stainless steel sintered mesh, it primarily withstands the fluid impact and performs primary surface interception of large gold-loaded carbon particles. Subsequently, the liquid penetrates the lower filter screen 1322 and enters the upper filter screen 1321. Utilizing the rich three-dimensional pore structure of the modified activated carbon filter cotton, the escaped fine carbon powder is deeply physically captured. Through the composite synergy of the stainless steel sintered mesh and the modified activated carbon filter cotton, a staged interception filtration mechanism is formed, ensuring both the service life and deformation resistance of the filter components and significantly improving the interception accuracy of fine carbon powder, effectively preventing the loss of valuable gold-loaded resources.

[0048] In some preferred embodiments, to further improve the convenience of daily maintenance of the equipment, the carbon interception filter assembly 13 adopts an integrated quick-release design. Specifically, it also includes an elastic sealing strip, a lifting handle, and a limiting lock. In terms of spatial arrangement and connection, the elastic sealing strip covers or is embedded in the outer peripheral edge of the filter frame 131; the lifting handle is fixedly set on the top surface of the filter frame 131 to provide a point of force for hand gripping; the limiting lock (e.g., a mechanical spring buckle or a rotary clamping buckle) is installed on the top edge or side of the filter frame 131 and is adapted to the installation position (e.g., the outer edge of the square mounting groove 1214 at the top of the protective cover).

[0049] Based on the above structural arrangement, the carbon interception filter assembly 13 constitutes a tool-free modular quick-release structure. During assembly, the operator holds the lifting handle and pushes the entire filter assembly into the installation groove. The elastic sealing strip on the outer periphery deforms elastically under the pressure of the groove wall. This not only fills the assembly gap and prevents the lean liquid containing fine carbon powder from escaping through the gaps at the frame edge, but also provides the assembly with initial limiting resistance. Subsequently, by manually engaging the limiting lock, the filter assembly is rigidly locked on the working interface to resist the upward impact thrust generated by the liquid flow below. When the double-layer composite filter screen 132 becomes clogged and needs to be replaced or cleaned, the operator does not need any mechanical auxiliary tools such as wrenches or screwdrivers. They only need to manually unlock the limiting lock, pull the handle upward to overcome the frictional resistance of the locking strip, and the entire modular filter assembly can be pulled out. This quick-release design transforms the cumbersome bolt disassembly into a simple plugging and unplugging and snapping action, effectively shortening the downtime for maintenance under harsh working conditions.

[0050] In long-term filtration operations containing fine particulate materials, deposits easily accumulate on the surface of the filter media, leading to a reduction in the flow area and impeded liquid flow. To ensure the long-term stable operation of the solid-liquid separation process, the carbon interception filter assembly 13 in this embodiment is also equipped with a screen cleaning device 133.

[0051] In the specific structural layout, the carbon interception and filtration assembly 13 also includes a screen cleaning device 133; the screen cleaning device 133 is disposed on the side of the double-layer composite filter screen 132 and is used to clean the carbon powder intercepted on the surface of the filter screen.

[0052] The screen cleaning device 133 is fixedly or movably disposed on the side of the double-layer composite filter screen 132. This spatial arrangement allows the actuating end of the cleaning device to directly face and act on the water-facing working surface of the filter screen. During equipment operation or when entering a maintenance procedure, by activating the screen cleaning device 133 to physically intervene on the filter screen surface (e.g., by mechanical scraping or brushing), the fine carbon powder adhering to and intercepted on the filter screen surface can be quickly peeled off and removed. This online cleaning mechanism can promptly restore the permeability of the three-dimensional pores of the filter screen, effectively preventing the risk of screen blockage caused by particle accumulation and maintaining the smooth flow of internal fluid channels. The integration of this structure significantly reduces the need for manual intervention, making daily cleaning and maintenance more convenient and significantly shortening the equipment downtime.

[0053] To ensure both a safe working environment and ease of equipment inspection and component replacement, the sealed protective assembly 12 adopts an integrated design. Specifically, in some embodiments, the sealed protective assembly 12 includes an arc-shaped integrated sealing protective cover 121. This protective cover has an overall arc-shaped structure, which can effectively guide the smooth collection of internal escaping gas, and the one-piece molding process structurally reduces potential gaps for gas leakage.

[0054] Further reference Figure 5 The arc-shaped integrated sealed protective cover 121 is provided with a sealing rubber gasket 1211, a quick locking buckle 1212 and an explosion-proof observation window 1213; the top of the arc-shaped integrated sealed protective cover 121 is provided with a square mounting groove 1214 for installing the carbon intercepting filter assembly 13.

[0055] In the specific assembly and mating, a sealing rubber gasket 1211 is placed between the lower edge of the arc-shaped integrated sealing protective cover 121 and the top flange face of the adsorption tank 11. Multiple quick-locking buckles 1212 are configured around the outer perimeter of the cover. By operating the quick-locking buckles 1212 to apply pressure, the sealing rubber gasket 1211 undergoes elastic deformation, thereby filling the gap at the mating surface and forming a reliable airtight interface, effectively preventing the outward escape of cyanide-containing waste gas. Simultaneously, an explosion-proof observation window 1213 is embedded in the arc-shaped integrated sealing protective cover 121. This window, while maintaining the overall airtightness of the system, provides operators with a non-invasive way to directly monitor the reaction flow and liquid level changes within the tank.

[0056] Furthermore, to achieve modular integration and quick maintenance of the filter unit, a square insert groove 1214 is formed at a specific position on the top of the arc-shaped integrated sealing protective cover 121 (usually corresponding to the area directly above the discharge port inside the tank). This square insert groove 1214 serves as a standardized physical interface specifically for accommodating the carbon intercepting filter assembly 13. This structural design allows the filter assembly to be inserted into the work station in a modular form from top to bottom, and when cleaning or replacement is required, it can be quickly pulled out and separated without tools by releasing the quick-locking buckle 1212, significantly optimizing the daily maintenance process of the sealed equipment.

[0057] To further improve the system's reaction kinetics, flow stability, and resource recovery capabilities, the adsorption device in this embodiment has also undergone multi-dimensional optimization of the internal reaction space and boundary structure.

[0058] In some embodiments, the gold ore cyanide adsorption device 1 further includes a stirring and aeration component; the stirring and aeration component is built into the adsorption tank 11 and includes a variable frequency motor, a hollow stirring shaft, a double-layer spiral impeller, an annular aeration pipe and a microporous aeration head.

[0059] The stirring and aeration assembly specifically includes a variable frequency motor arranged above the tank, a hollow stirring shaft extending downward driven by the variable frequency motor, a double-layer spiral impeller installed on the hollow stirring shaft, and an annular aeration pipe and microporous aeration head located in the lower part of the working area.

[0060] Under operating conditions, the rotation of the double-layer helical impeller creates a gentle and uniform circulating shear flow field within the tank, while the auxiliary flow channel components maintain an ideal dynamic mixing state between the slurry and activated carbon. Simultaneously, external air is supplied to the slurry in the form of dense microbubbles through annular aeration pipes and microporous aeration heads. This synergistic effect of mechanical disturbance and microporous oxygenation greatly increases the dissolved oxygen concentration within the system, providing sufficient oxidant for the cyanide reaction and thus effectively improving the overall rate of cyanide leaching and adsorption.

[0061] Furthermore, the stirring speed of the variable frequency motor is preferably controlled between 5 r / min and 30 r / min; the pore size of the microporous aeration head is preferably 0.8 mm, and the aeration pressure supplied by the system is preferably set to 0.25 MPa. The combination of these parameters can provide sufficient dissolved oxygen and optimal flow disturbance without breaking the activated carbon.

[0062] In some embodiments, the bottom of the adsorption tank 11 is an arc-shaped flow guiding structure; the bottom of the tank is provided with a carbon mud discharge pipe 111.

[0063] Compared to traditional right-angle or flat-bottom designs, the curved surface eliminates the fluid stagnation zone caused by physical angles. Under the scouring of the upflow or agitated flow, the slurry can smoothly transition along the smooth inner wall, eliminating the formation of sedimentation dead zones from a structural perspective. At the same time, a carbon mud drain pipe 111 is provided at the confluence depression at the bottom of the tank to facilitate the collection and discharge of heavy sediments that slide down with the flow, maintaining the activity of the medium inside the tank.

[0064] In some embodiments, to improve the flexibility of local solid-liquid separation and prevent the loss of high-grade materials, the adsorption tank 11 is also equipped with a permeable pipe (not shown in the figure); the permeable pipe has multiple permeable holes evenly distributed on its wall as a liquid flow channel; and the permeable pipe is wrapped with a screen to prevent gold-loaded carbon from entering. The pore size of the screen is configured to be smaller than the particle size of the target gold-loaded carbon particles, allowing the liquid phase to pass through and be discharged while forming a physical barrier to effectively prevent gold-loaded carbon from entering the interior of the permeable pipe.

[0065] In some embodiments, the adsorption tank 11 is further provided with a backflow prevention baffle on its side wall. This baffle effectively suppresses the backflow of solid medium caused by liquid surface fluctuations or eddies by interfering with the local flow field direction near the wall, thus ensuring the order and stability of the overall working flow field.

[0066] In the efficient and continuous industrial production of modern gold mines, the independent operation of individual equipment is often insufficient to meet the demands of large-scale gold extraction processes. Therefore, this embodiment further provides a gold mine cyanide adsorption integrated system 100, referencing... Figure 6 The integrated system includes multiple gold ore cyanide adsorption devices 1 as described above, arranged in series, as well as a carbon conveying assembly 2 and a sewage purification assembly 3.

[0067] The multiple gold ore cyanide adsorption devices 1 are connected by the carbon conveying assembly 2 to transport gold-loaded carbon.

[0068] The wastewater purification component 3 is connected to the sealed protection component 12 of the plurality of gold ore cyanide adsorption devices 1, and is used for centralized treatment of waste gas.

[0069] In terms of process flow layout, multiple gold ore cyanide adsorption units 1 are arranged in a cascaded manner to form a continuous multi-stage countercurrent adsorption array. To achieve automated transfer of the solid-phase adsorption medium between different adsorption levels, the multiple gold ore cyanide adsorption units 1 are interconnected through the carbon conveying assembly 2. Under continuous operation, the carbon conveying assembly 2 can reversely transfer and directionally output the activated carbon initially adsorbed in the downstream adsorption tank or the high-grade gold-loaded carbon in the upstream tank, thereby maintaining the concentration gradient within the entire process system and ensuring the continuous and stable production of high-grade gold-loaded carbon.

[0070] In terms of safety protection and environmental control, this integrated system adopts a centralized waste gas treatment architecture. The wastewater purification component 3 is connected to the sealed protective component 12 on top of the multiple gold ore cyanide adsorption devices 1 through a manifold network. During operation, each adsorption device volatilizes and accumulates toxic gases such as hydrogen cyanide within the sealed protective cover. These gases are then centrally drawn and collected in the wastewater purification component 3 for washing and neutralization. This system-wide gas interconnection design not only effectively avoids equipment redundancy and maintenance difficulties caused by individual tanks treating waste gas separately, but also constructs a tight negative pressure collection network, significantly reducing the overall emission rate of harmful gases within the plant area. This ensures the safe, green, and environmentally friendly operation of the integrated system when dealing with various high- and low-grade ore slurries.

[0071] In the continuous operation of the multi-stage countercurrent adsorption system, in order to achieve efficient and low-loss cross-tank transfer of solid materials between different adsorption devices, the carbon conveying component 2 in the integrated system adopts a combination structure of pneumatic lifting and automatic control.

[0072] Specifically, refer to Figure 7 and Figure 8 The carbon conveying assembly 2 includes a carbon lifter 21, a gold-loaded carbon conveying trough 22, and a pneumatic valve 23.

[0073] The carbon extractor 21 is equipped with a gas-water-carbon mixing chamber 211 and a gas-water separation chamber 212.

[0074] The carbon extractor 21 serves as the core of the fluidized bed extraction process. Its interior contains a gas-water-carbon mixing chamber 211 and a gas-water separation chamber 212 arranged vertically. In actual material extraction conditions, the gas-water-carbon mixing chamber 211, located at the bottom of the equipment, acts as a power convergence point, introducing compressed gas. The gas mixes thoroughly with the surrounding aqueous phase and granular activated carbon, resulting in a significant decrease in the apparent density of the fluid in this area, thus creating a pressure differential (gas lift effect) between the inside and outside of the pipeline. Driven by this pressure differential, the gas, water, and carbon three-phase mixture is rapidly lifted along the vertical pipeline.

[0075] When the mixture flows to the gas-liquid separation chamber 212 at the top of the carbon lifter 21, the gas overflows and is discharged upwards due to the expansion of the chamber volume and the decrease in flow velocity, while the liquid phase water and solid phase activated carbon collect under the action of gravity and flow out smoothly. This air-lift separation structure without mechanical impeller contact effectively reduces the physical crushing and wear on the activated carbon during the conveying process, maintaining the particle integrity of the material.

[0076] Meanwhile, in the logistics distribution stage, the pneumatic valve 23 serves as a flow direction switching node in the pipeline network. By controlling the opening and closing logic of the pneumatic valve 23 through a program, the carbon-water mixture output from the gas-liquid separation chamber 212 can be guided to an adjacent pre-adsorption tank to complete a reverse carbon transfer process, or, when adsorption saturation is determined, it can be stably guided to the gold-loaded carbon conveying tank 22 for centralized collection and subsequent transfer. This component assembly achieves fully enclosed, automated logistics transportation, ensuring continuous and reliable processes and significantly reducing pipeline blockage.

[0077] In order to efficiently and smoothly transfer the high-grade adsorption medium to the subsequent smelting process and improve the switching efficiency of the system between different working states, the carbon conveying component 2 in the integrated system is also equipped with a dedicated power fluid introduction structure.

[0078] Specifically, the carbon conveying assembly 2 also includes a high-pressure air inlet and a high-pressure water inlet (not shown in the figure); the gold-loaded carbon conveying trough 22 is connected to the high-pressure water inlet and the high-pressure air inlet through the pneumatic valve 23.

[0079] Regarding the connection and control of the pipeline system, the gold-loaded carbon conveying tank 22 is dynamically coordinated with the high-pressure water inlet and the high-pressure air inlet via the pneumatic valve 23. During actual operation, when the adsorption medium reaches the process-defined saturation level and enters the gold-loaded carbon conveying tank 22, the system sends a control command to the pneumatic valve 23 to open the high-pressure fluid channel according to a predetermined logic. High-pressure water is injected into the tank via the pneumatic valve 23, acting as a fluid carrier to fluidize the solid gold-loaded carbon and propel it forward; simultaneously, the timely intervention of high-pressure air creates a strong air-water mixing thrust within the conveying pipeline.

[0080] This operational mechanism, which precisely controls the alternating or mixed intervention of high-pressure water and high-pressure air through pneumatic valve 23, provides continuous and stable long-distance conveying power for heavy gold-loaded carbon particles, ensuring smooth material transport to the smelting workshop. The rapid response of pneumatic valve 23 makes the switching between the static carbon collection process and the dynamic pressurized conveying process more efficient and convenient. Utilizing the synergistic flushing effect of the dual power of air and water, the system can achieve continuous and reliable transport of solid materials in a fully enclosed pipeline network, fundamentally eliminating the risks of material sedimentation and pipeline blockage.

[0081] In the process of treating gold ore solutions containing cyanide, highly toxic acidic gases such as hydrogen cyanide will inevitably be volatilized. To achieve environmentally compliant emissions and ensure safety at the production site, the integrated system is equipped with a complete wastewater purification component 3 at the end. Specifically, the gold ore cyanide adsorption integrated system 100 also includes the wastewater purification component 3; the wastewater purification component 3 includes a waste gas guide pipe 31 connected to the sealed protection component 12, and an alkaline purification and recovery box 32 connected to the waste gas guide pipe 31.

[0082] In terms of the connection layout of the pipeline and system, the air inlet end of the exhaust gas guide pipe 31 is connected to the interior of the sealed protective component 12 on each of the front-end adsorption devices, forming a closed gas suction channel. Under operating conditions, the toxic gas containing hydrogen cyanide accumulated in the sealed protective cover is directionally collected through the exhaust gas guide pipe 31 and introduced into the alkaline purification and recovery box 32.

[0083] The alkaline purification and recovery tank 32 is typically equipped with an alkaline absorbent (e.g., an aqueous sodium hydroxide solution). When the weakly acidic waste gas enters the purification tank, it undergoes sufficient gas-liquid contact and neutralization reaction with the alkaline absorbent. This reaction process converts toxic hydrogen cyanide gas into stable cyanide salts that dissolve in water, thereby removing the toxicity of the waste gas while generating cyanide reagents that can be reused in the gold extraction process. Through the synergistic combination of physical diversion and chemical absorption, this system not only significantly reduces the risk of harmful gas escape and effectively ensures the safety of operators, but also ensures that the treated exhaust gas meets emission standards and achieves economic recovery of valuable reagents.

[0084] It should be noted that the gold ore cyanide adsorption device and its integrated system provided in this application are particularly suitable for operating conditions with a slurry concentration of 40% to 45%, and can maintain good gas, liquid and solid three-phase mixing and separation effect at this concentration.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gold ore cyanide adsorption device, characterized in that, It includes an adsorption tank, and a sealed protection component, a carbon interception and filtration component, and a balanced flow channel adsorption component disposed on the adsorption tank. The sealed protective component is located at the top of the adsorption tank; The carbon interception filter assembly is detachably installed at the lean liquid overflow outlet of the adsorption tank; The equalization flow channel adsorption component is located in the internal working area of ​​the adsorption tank and is used to equalize and divide the precious liquid entering the adsorption tank.

2. The gold ore cyanide adsorption device as described in claim 1, characterized in that, The balanced flow channel adsorption assembly includes a carbon baffle plate disposed within the adsorption tank; the carbon baffle plate has multiple precious liquid inlets; the multiple precious liquid inlets together form a pressure equalization hole matrix; and / or, The carbon interception and filtration assembly includes a filter frame and a double-layer composite filter; the double-layer composite filter is installed inside the filter frame.

3. The gold ore cyanide adsorption device as described in claim 2, characterized in that, The inlet of the precious liquid is equipped with an inlet pipe, a pipe plug, and a sealing ring to prevent activated carbon from leaking into the inlet area; and / or, The dual-layer composite filter screen includes a lower filter screen and an upper filter screen; and / or, The carbon interception and filtration assembly also includes a screen cleaning device; the screen cleaning device is disposed on the side of the double-layer composite filter screen and is used to clean the carbon powder intercepted on the surface of the filter screen.

4. The gold ore cyanide adsorption device as described in claim 3, characterized in that, The lower filter screen is an 80-120 mesh stainless steel sintered mesh, and the upper filter screen is a 20-50 mesh modified activated carbon filter cotton.

5. The gold ore cyanide adsorption device as described in claim 1, characterized in that, The sealed protective assembly includes an arc-shaped integrated sealed protective cover.

6. The gold ore cyanide adsorption device as described in claim 5, characterized in that, The arc-shaped integrated sealed protective cover is equipped with a sealing rubber gasket, a quick-locking buckle, and an explosion-proof observation window; and / or, The top of the arc-shaped integrated sealed protective cover is provided with a square mounting groove for installing the carbon interception filter assembly.

7. The gold ore cyanide adsorption device as described in claim 1, characterized in that, The gold ore cyanide adsorption device further includes a stirring and aeration assembly; the stirring and aeration assembly is built into the adsorption tank and includes a variable frequency motor, a hollow stirring shaft, a double-layer spiral impeller, an annular aeration pipe, and a microporous aeration head; and / or, The bottom of the adsorption tank has a circular arc flow guiding structure; the bottom of the tank is equipped with a carbon sludge discharge pipe; and / or... The adsorption tank is also equipped with a water-permeable pipe; the pipe wall is evenly provided with multiple water-permeable holes, and the outside of the water-permeable pipe is wrapped with a screen to prevent gold-loaded carbon from entering; and / or, The adsorption tank is also equipped with a backflow prevention baffle on its side wall.

8. An integrated system for adsorbing cyanide in gold ore, characterized in that, It includes multiple gold ore cyanide adsorption devices as described in any one of claims 1-7, arranged in series, as well as a carbon conveying assembly and a sewage purification assembly; Multiple gold ore cyanide adsorption devices are connected to each other via the carbon conveying assembly for conveying gold-loaded carbon. The wastewater purification component is connected to the sealed protection component of the multiple gold ore cyanide adsorption devices for centralized treatment of waste gas.

9. The gold ore cyanide adsorption integrated system as described in claim 8, characterized in that, The charcoal conveying assembly includes a charcoal lifter, a gold-loaded charcoal conveying trough, and pneumatic valves; the charcoal lifter internally comprises a gas-water-charcoal mixing chamber and a gas-water separation chamber; and / or, The gold ore cyanide adsorption integrated system also includes a wastewater purification component; the wastewater purification component includes a waste gas guide pipe connected to the sealed protection component, and an alkaline purification and recovery box connected to the waste gas guide pipe.

10. The gold ore cyanide adsorption integrated system as described in claim 9, characterized in that, The carbon conveying assembly also includes a high-pressure air inlet and a high-pressure water inlet; The gold-loaded carbon conveying trough is connected to the high-pressure water inlet and the high-pressure air inlet via the pneumatic valve.

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