Double-insulation electrolysis device

Abstract

The utility model provides a double-insulation electrolysis device and relates to the technical field of gold extraction. The device mainly comprises an outer electrolysis tank, an inner electrolysis tank, a communicating pipe and the like. The double-insulation structure of the inner polytetrafluoroethylene insulation layer and the insulation coating is adopted, under the double-insulation measure, the electrolytic bath can be insulated from the conveying pipeline, the situation that the conveying pipeline is electrified due to communication with the electrolytic bath, and electro-deposition of a gold-containing solution on the conveying pipeline is caused is avoided to the maximum extent, the problem of gold deposition of desorption electrolysis equipment is solved, and the metal recovery rate is increased. The liquid inlet buffer device and the liquid outlet buffer device are respectively arranged in the electrolytic inner tank, so that the electrolyte can be effectively prevented from impacting gold mud in the electrolytic inner tank, the gold mud is taken out of the electrolytic tank, and the metal recovery rate can be obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gold extraction, in particular to a double-insulated electrolysis device. Background Art

[0002] Most gold mines use a carbon-in-slurry (CSI) gold extraction process, with gold-loaded carbon desorption electrolysis equipment being the primary equipment. Gold-loaded carbon, eluted with a desorption agent, produces gold complex ions that enter the liquid phase. Gold in the liquid phase then electrolyzes within the electrolytic cell to produce gold mud. Without insulation in the electrolytic cell, the cell and the circulation piping become electrically charged, causing the gold complex ions in the liquid phase to electrolyze on the metal in the cell and the circulation piping, leading to "gold accumulation." To address this issue, polytetrafluoroethylene (PTFE) insulation is currently used. However, this insulation layer is easily scratched, exposing the metal in the cell and causing "gold accumulation," which reduces metal recovery rates.

[0003] In addition, during the process of electrolyte flowing into and out of the electrolytic cell, the electrolyte will impact the gold mud in the electrolytic cell, bringing the gold mud out of the electrolytic cell, which will also lead to a decrease in metal recovery rate.

[0004] In view of this, it is necessary to design an improved double-insulated electrolysis device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a double-insulated electrolysis device to solve the problem of "gold accumulation" and the technical problem of gold mud escaping due to the impact of electrolyte.

[0006] In order to achieve the above-mentioned purpose of the utility model, the utility model provides a double-insulated electrolysis device, which includes an electrolysis outer tank and an electrolysis inner tank;

[0007] The electrolytic outer tank comprises an electrolytic outer tank cover and an electrolytic outer tank body connected to each other; the electrolytic outer tank body is provided with a sewage outlet, a gold mud outlet, a liquid inlet pipe and a liquid outlet;

[0008] The inner electrolytic tank is arranged in the inner cavity of the outer electrolytic tank; the inner electrolytic tank comprises an inner tank metal shell, a double insulation structure, a gold mud discharge pipe arranged at the bottom of the inner electrolytic tank, a conductive bar arranged at the top of the inner electrolytic tank, an electrolytic anode and an electrolytic cathode;

[0009] The double insulation structure comprises an insulation coating and a polytetrafluoroethylene insulation layer which are sequentially connected to the inner wall of the inner tank metal shell; the inner tank metal shell and the double insulation structure are combined to form a double insulation electrolytic inner tank body.

[0010] As a further improvement of the present invention, the electrolytic inner tank further comprises a liquid inlet buffer device and a liquid outlet buffer device symmetrically arranged inside the double-insulated electrolytic inner tank body;

[0011] One end of the liquid inlet pipe is inserted into the liquid inlet buffer device.

[0012] As a further improvement of the present invention, the liquid outlet buffer device and the liquid inlet buffer device both include a liquid inlet, a buffer plate, a serpentine insert plate buffer cavity and a liquid outlet.

[0013] As a further improvement of the present invention, the buffer plate includes an upper buffer plate that is tilted at the top and is 120-135 degrees to the liquid flow direction, and a "snake-shaped" buffer plate that is arranged at the bottom.

[0014] As a further improvement of the present invention, the insulating coating is a composite coating formed by mixing an organic insulating coating and an inorganic insulating coating.

[0015] As a further improvement of the present invention, the inner electrolytic tank is fixed inside the outer electrolytic tank body by welding channel steel.

[0016] As a further improvement of the present invention, the electrolytic outer tank further includes a liquid level gauge arranged on the side wall of the electrolytic outer tank body.

[0017] As a further improvement of the present invention, one end of the conductive bar is connected to the electrolysis outer tank body and sleeved through the side wall of the electrolysis outer tank body, and the other end is arranged on the top of the double-insulation inner tank body.

[0018] As a further improvement of the present invention, the gold mud discharge pipe is arranged at the bottom of the electrolytic inner tank and is connected to the gold mud discharge port.

[0019] As a further improvement of the present invention, an exhaust port is provided on the electrolysis outer tank cover.

[0020] As a further improvement of the present invention, the electrolysis anode and the electrolysis cathode are respectively fixedly arranged on the conductive bar.

[0021] As a further improvement of the present invention, the double-insulated electrolysis device also includes valves for respectively regulating the opening and closing of the sewage outlet, the gold mud outlet, the liquid inlet pipe, the liquid outlet and the gold mud outlet pipe.

[0022] The beneficial effects of the utility model are:

[0023] 1. The double-insulated electrolysis device provided by the utility model adopts a double-insulation structure of an inner polytetrafluoroethylene insulation layer and an insulating coating. Under the double insulation measures, the electrolytic cell and the conveying pipeline can be insulated, thereby preventing the conveying pipeline from being charged due to being connected to the electrolytic cell to the greatest extent, causing the gold-containing solution to be "electrodeposited" on the conveying pipeline, solving the problem of gold accumulation in the desorption electrolysis equipment and improving the metal recovery rate.

[0024] 2. The double-insulated electrolysis device provided by the utility model is respectively provided with a liquid inlet buffer device and a liquid outlet buffer device in the electrolytic inner tank. By providing a buffer plate with a special structure (including an upper buffer plate inclined at the top and at an angle of 120 to 135 degrees to the liquid flow direction, and a "snake-shaped" buffer plate provided at the bottom), the electrolyte inlet and outlet processes are effectively buffered, which can effectively prevent the electrolyte from impacting the gold mud in the electrolytic inner tank and bringing the gold mud out of the electrolytic tank, thereby significantly improving the metal recovery rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of the double-insulated electrolysis device provided by the utility model.

[0026] Figure 2 This is a structural schematic diagram of the liquid inlet buffer device of the double-insulated electrolysis device provided by the utility model.

[0027] Figure 3 This is a structural schematic diagram of the liquid outlet buffer device of the double-insulated electrolysis device provided by the utility model.

[0028] Reference numerals

[0029] 1. Electrolytic outer tank cover; 2. Electrolytic outer tank body; 3. Conductive bar; 4. Liquid outlet buffer device; 5. Electrolytic inner tank; 6. Gold mud discharge pipe; 7. Drain port; 8. Gold mud discharge port; 9. Exhaust port; 10. Electrolytic anode; 11. Electrolytic cathode; 12. Liquid inlet pipe; 13. Liquid inlet buffer device; 14. Liquid level gauge; 15. Inner tank metal shell; 16. Insulation coating; 17. Polytetrafluoroethylene insulation layer; 18. Liquid outlet.

[0030] 131, first liquid inlet; 132, first buffer plate; 133, first serpentine insert plate buffer cavity; 134, first liquid outlet;

[0031] 41. Second liquid inlet; 42. Second serpentine insert plate buffer chamber; 43. Second liquid outlet; 44. Second buffer plate. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] It should also be noted here that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme of the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0034] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0035] See also Figure 1 As shown, the utility model provides a double-insulated electrolysis device, which is mainly composed of an electrolysis outer tank, an electrolysis inner tank 5 and connecting pipes, and specifically consists of an electrolysis outer tank cover 1, an electrolysis outer tank body 2, a conductive bar 3, a liquid outlet buffer device 4, an electrolysis inner tank 5, a gold mud discharge pipe 6, a sewage outlet 7, a gold mud discharge outlet 8, an exhaust port 9, an electrolysis anode 10, an electrolysis cathode 11, a liquid inlet pipe 12, a liquid inlet buffer device 13, a liquid level meter 14, an inner tank metal shell 15, an insulating coating 16, a polytetrafluoroethylene insulation layer 17, and a liquid outlet 18.

[0036] The electrolytic outer tank cover 1 is connected to the electrolytic outer tank body 2 by bolts; the exhaust port 9 is welded to the electrolytic outer tank cover 1. The sewage outlet 7, gold mud discharge port 8, liquid inlet pipe 12, and liquid outlet 18 are respectively welded to the electrolytic outer tank body 2.

[0037] The liquid level gauge 14 is fixed to the flange of the side wall of the electrolysis outer tank body 2 by bolts; the electrolysis inner tank 5 is fixed to the electrolysis outer tank body 2 by channel steel welding.

[0038] The electrolytic inner tank 5 is composed of an inner tank liquid outlet buffer device 4, a gold mud discharge pipe 6, an electrolytic anode 10, an electrolytic cathode 11, a liquid inlet buffer device 13, an inner tank metal shell 15, and a double insulation structure (insulating coating 16, polytetrafluoroethylene insulation layer 17).

[0039] The double insulation structure includes an insulation coating 16 and a polytetrafluoroethylene insulation layer 17 connected in sequence to the inner wall of the inner tank metal shell 15; the inner tank metal shell 15 and the double insulation structure are combined to form a double insulation electrolytic inner tank body.

[0040] The inner tank liquid outlet buffer device 4 , the gold mud discharge pipe 6 , and the liquid inlet buffer device 13 are respectively welded to the inner tank metal shell 15 .

[0041] One end of the conductive bar 3 is connected to the electrolysis outer tank body 2 and is sleeved through the side wall of the electrolysis outer tank body 2, and the other end is arranged on the top of the double-insulation inner tank body.

[0042] The electrolysis anode 10 and the electrolysis cathode 11 are fixed to the conductive bar 3 by bolts.

[0043] The liquid inlet pipe 12 is inserted into the liquid inlet buffer device 13 .

[0044] See also Figure 2 and Figure 3 As shown, the liquid outlet buffer device 4 and the liquid inlet buffer device 13 both include structures such as a liquid inlet, a buffer plate, a serpentine insert plate buffer cavity, and a buffer liquid outlet.

[0045] Specifically, see Figure 3 As shown, the liquid outlet buffer device 4 includes a second liquid inlet 41, a second serpentine insert plate buffer cavity 42, a second liquid outlet 43, and a second buffer plate 44. The second liquid inlet 41 is provided on the side wall of the liquid outlet buffer device 4.

[0046] The liquid inlet buffer device 13 includes a first liquid inlet 131 , a first buffer plate 132 , a first serpentine insert plate buffer cavity 133 , and a first liquid outlet 134 . The first liquid inlet 131 is disposed at the top of the liquid inlet buffer device 13 .

[0047] The top of the second buffer plate 44 is tilted and is at an angle of 120 to 135 degrees to the liquid flow direction (upper buffer plate), and the remaining bottom buffer plate is a "snake-shaped" structure ("snake-shaped" buffer plate).

[0048] Similarly, the top of the first buffer plate 132 is tilted and is at an angle of 120-135° to the liquid flow direction (upper buffer plate), and the remaining bottom buffer plate is a "snake-shaped" structure ("snake-shaped" buffer plate).

[0049] The inner tank metal shell 15 is sprayed with an insulating coating 16 and then lined with a high-temperature resistant polytetrafluoroethylene insulating layer 17 .

[0050] In a specific embodiment, the material of the electrolysis outer tank cover 1, the electrolysis outer tank body 2, the inner tank metal shell 15, the pipeline, and the valve can be carbon steel, stainless steel, titanium steel, etc.

[0051] The electrolytic inner tank 5 is provided with a liquid inlet buffer device 13 and a liquid outlet buffer device 4 , which can effectively prevent the electrolyte from impacting the gold mud in the electrolytic inner tank 5 and bringing the gold mud out of the electrolytic inner tank 5 .

[0052] In some embodiments, the insulating coating 16 is a composite coating formed by mixing an organic insulating coating and an inorganic insulating coating.

[0053] The inner tank metal shell 15 is double-insulated by spraying an insulating coating 16 and a polytetrafluoroethylene insulating layer 17 , wherein the insulating coating 16 comprises an insulating organic material and an insulating inorganic material.

[0054] The double-insulated electrolysis device further includes valves for regulating the opening and closing of the exhaust port 9 , the sewage outlet 7 , the gold mud discharge port 8 , the liquid inlet pipe 12 , the liquid outlet 18 and the gold mud discharge pipe 6 .

[0055] The working process of the double-insulated electrolysis device provided by the utility model is as follows:

[0056] Step 1: Check and ensure that the electrolysis device and its pipelines are clean and free of debris, and all valves are closed; test the resistance between the electrolysis cathode 11 and the electrolysis anode 10 to ensure that there is no short circuit problem;

[0057] Step 2: Open the valve of the exhaust port 9, the valve of the liquid inlet pipe 12, and the valve of the liquid outlet 18 on the electrolysis outer tank cover 1 in sequence;

[0058] Step 3: The gold-loaded carbon electrolysis noble solution is injected into the electrolysis inner tank 5 through the liquid inlet, the liquid inlet pipe 12 and the liquid inlet buffer device 13;

[0059] Step 4: Turn on the external electrolysis power supply and control the voltage to 2.5-4V, so that the metal ions in the electrolytic precious liquid are electrochemically deposited at the electrolytic cathode 11 to produce "gold mud". The electrolyzed solution is discharged from the liquid outlet 18 and transferred to the desorption column to desorb the gold-loaded carbon. The precious metals in the gold-loaded carbon are eluted and electrolytically recovered in the "electrolysis-desorption-electrolysis" cycle.

[0060] Step 5: When the gold mud in the electrolytic inner tank 5 accumulates enough and needs to be removed, open the electrolytic outer tank cover 1 and the valve of the gold mud discharge port 8, rinse the surface of the anode and cathode plates and the gold mud in the tank with clean water, and discharge the gold mud into the gold mud collection box through the gold mud discharge pipe 6 and the gold mud discharge port 8.

[0061] In summary, the utility model provides a double-insulated electrolysis device, which relates to the technical field of gold extraction. The device is mainly composed of an electrolytic outer tank, an electrolytic inner tank, and connecting pipes, and is specifically composed of an electrolytic outer tank cover, an electrolytic outer tank body, a conductive bar, a liquid outlet buffer device, an electrolytic inner tank, a gold mud discharge pipe, a sewage outlet, a gold mud discharge outlet, an exhaust port, an electrolytic anode, an electrolytic cathode, a liquid inlet pipe, a liquid inlet buffer device, a liquid level gauge, an inner tank metal shell, an insulating coating, a polytetrafluoroethylene insulating layer, and a liquid outlet. The double insulation structure of the inner polytetrafluoroethylene insulating layer and the insulating coating adopted can insulate the electrolytic cell from the conveying pipeline under double insulation measures, and to the greatest extent avoid the conveying pipeline from being charged due to being connected to the electrolytic cell, so that the gold-containing solution is "electrodeposited" on the conveying pipeline, thereby solving the problem of gold accumulation in the desorption electrolytic equipment and improving the metal recovery rate. A liquid inlet buffer device and a liquid outlet buffer device are respectively provided in the electrolytic inner tank to effectively buffer the electrolyte inlet and outlet processes, which can effectively prevent the electrolyte from impacting the gold mud in the electrolytic inner tank and carrying the gold mud out of the electrolytic tank, thereby significantly improving the metal recovery rate.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A double-insulated electrolysis device, characterized in that: It includes an outer electrolytic tank and an inner electrolytic tank; The electrolytic outer tank comprises an electrolytic outer tank cover and an electrolytic outer tank body connected to each other; the electrolytic outer tank body is provided with a sewage outlet, a gold mud outlet, a liquid inlet pipe and a liquid outlet; The inner electrolytic tank is arranged in the inner cavity of the outer electrolytic tank; the inner electrolytic tank comprises an inner tank metal shell, a double insulation structure, a gold mud discharge pipe arranged at the bottom of the inner electrolytic tank, a conductive bar arranged at the top of the inner electrolytic tank, an electrolytic anode and an electrolytic cathode; The double insulation structure comprises an insulation coating and a polytetrafluoroethylene insulation layer which are sequentially connected to the inner wall of the inner tank metal shell; the inner tank metal shell and the double insulation structure are combined to form a double insulation electrolytic inner tank body.

2. A double-insulated electrolysis device according to claim 1, characterized in that: The electrolytic inner tank further comprises a liquid inlet buffer device and a liquid outlet buffer device symmetrically arranged inside the double-insulated electrolytic inner tank body; One end of the liquid inlet pipe is inserted into the liquid inlet buffer device; the liquid outlet buffer device and the liquid inlet buffer device both include a liquid inlet, a buffer plate, a serpentine insert plate buffer cavity and a liquid outlet.

3. A double-insulated electrolysis device according to claim 2, characterized in that: The buffer plate includes an upper buffer plate that is tilted at the top and is 120-135 degrees to the liquid flow direction, and a "snake-shaped" buffer plate that is arranged at the bottom.

4. A double-insulated electrolysis device according to claim 1, characterized in that: The inner electrolytic tank is fixed inside the outer electrolytic tank body by welding channel steel.

5. The double-insulated electrolysis device according to claim 1, characterized in that: The electrolytic outer tank also includes a liquid level gauge arranged on the side wall of the electrolytic outer tank body.

6. The double-insulated electrolysis device according to claim 1, characterized in that: One end of the conductive bar is connected to the electrolysis outer tank body and sleeved through the side wall of the electrolysis outer tank body, and the other end is arranged on the top of the double-insulation inner tank body.

7. The double-insulated electrolysis device according to claim 1, characterized in that: The gold mud discharge pipe is arranged at the bottom of the electrolytic inner tank and is connected to the gold mud discharge port.

8. The double-insulated electrolysis device according to claim 1, characterized in that: The electrolysis outer tank cover is provided with an exhaust port.

9. The double-insulated electrolysis device according to claim 1, characterized in that: The electrolysis anode and the electrolysis cathode are respectively fixedly arranged on the conductive bar.

10. The double-insulated electrolysis device according to claim 8, characterized in that: The double-insulated electrolysis device also includes valves for respectively regulating the opening and closing of the exhaust port, sewage outlet, gold mud discharge port, liquid inlet pipe, liquid outlet and gold mud discharge pipe.

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