Efficient precious metal extraction device and control system thereof

Abstract

The invention discloses an efficient precious metal extraction device and a control system thereof, and relates to the field of precious metal extraction. According to the technical scheme, the control system comprises a first acquisition module, a second acquisition module and a control module, the second acquisition module is used for acquiring the weight value of the ore; the third acquisition module is used for acquiring the pH value of the extraction liquid; the data processing module is used for comparing the pH value with a preset pH threshold value and judging whether a detection instruction is generated or not; if the detection instruction is generated, obtaining i groups of weight values in the t period of time; calculating the difference value of every two adjacent groups of weight values to obtain i-1 groups of weight value differences, establishing an analysis set by using the i-1 groups of weight value differences, calculating the average value of the analysis set, judging the transition condition of the precious metal in the ore in real time based on the ore weight change and the pH value change, controlling the reaction time in real time, and improving the extraction efficiency while ensuring the extraction effect.

Description

Technical Field

[0001] The invention relates to the field of precious metal extraction, and in particular to a high-efficiency precious metal extraction device and a control system thereof. Background Art

[0002] Precious metals (such as gold, silver, platinum, palladium, etc.) are widely used in electronics, jewelry, industrial catalysis and other fields due to their rarity, high conductivity, corrosion resistance and other characteristics. At present, the commonly used method for precious metal extraction is extraction, which generally involves leaching, extraction, stripping and separation; The precious metals in the ore can be dissolved in the aqueous phase of the extract in the form of ions by leaching, and then the precious metals are converted from the aqueous phase to the organic phase by mixed extraction with an organic phase solvent, and finally the precious metals are obtained by stripping and separation. For example, the authorization announcement number is: CN208485924U discloses a precious metal extraction device, including an extraction box, a partition plate 1, a partition plate 2, an extractant box, a conduit system and a hydraulic system, the extraction box is provided with two groups of air holes 1 and air holes 2 horizontally penetrating the box body, and the upper and lower convex strips surrounding the inner wall of the extraction box are respectively arranged above and below the air holes 1 and the air holes 2, and the isolation plates 1 and 2 are respectively inserted from the air holes 1 and the air holes 2 to divide the extractant box into three reaction chambers on average, and a filter screen is placed at the bottom of each reaction chamber; the patent extracts step by step through multiple chambers, but multiple extractions will increase the amount of organic phase solvent used and the amount of waste liquid to be processed, which is not environmentally friendly; Secondly, when extracting precious metals, they need to be converted into water phase from the ore first. The current production process is based on experience and reacts at a set time, but the current production efficiency or resource waste of ore precious metals cannot be taken into account, and there are many shortcomings. Summary of the invention

[0003] 1. Purpose of the invention In view of this, the purpose of the present invention is to propose an efficient precious metal extraction device and its control system, so as to realize real-time judgment of the transformation of precious metals in the ore based on the change of ore weight and pH value, real-time control of the reaction time, and improve the extraction efficiency while ensuring the extraction effect.

[0004] (II) Technical solution In order to achieve the above technical objectives, the present invention provides a high-efficiency precious metal extraction device, comprising: An extraction tank, the middle part of which is rotatably connected to a driving main shaft; A driven shaft is sleeved on the driving main shaft, and the driving main shaft is used to drive the driven shaft to rotate; A filter plate, the middle of which is slidably connected with a support seat, the driven shaft is rotatably connected with the support seat, and the filter plate is used to filter solid matter; A sleeve is fixed to the bottom of the support base, and the sleeve is slidably and sealingly connected to the extraction tank, and a slider is fixed to the bottom of the sleeve; A spiral rod is sleeved on the bottom of the driven shaft, a reciprocating spiral groove is formed on the outer surface of the spiral rod, and the slider is slidably connected to the reciprocating spiral groove; The fixing seat is fixed to the bottom of the extraction tank, and the bottom of the spiral rod is rotatably connected to the fixing seat.

[0005] Preferably, first tooth blocks are evenly fixed on the outer surface of the driving main shaft, and first tooth grooves matching the first tooth blocks are evenly formed on the inner wall of the driven shaft.

[0006] Preferably, second tooth blocks are evenly fixed to the bottom outer surface of the driven shaft, and second tooth grooves matching the second tooth blocks are evenly formed on the inner wall of the spiral rod.

[0007] Preferably, a guide rod is fixed to the upper surface of the fixing seat, and the fixing seat is fixedly connected to the bottom of the extraction tank through the guide rod. A guide seat is fixed to the bottom of the sleeve, and the guide seat is slidably connected to the guide rod.

[0008] Preferably, a feed pipe is fixed on the top of the extraction tank, and a discharge pipe is fixed on the bottom of the extraction tank, and the feed pipe and the discharge pipe are used for feeding and discharging, respectively.

[0009] Preferably, a motor is fixed on the top of the extraction tank, and the output end of the motor is connected and fixed to the driving main shaft.

[0010] A control system for an efficient precious metal extraction device is applied to the above-mentioned efficient precious metal extraction device, the control system comprises: a first acquisition module, a second acquisition module, a third acquisition module and a data processing module, wherein the modules are connected via a wired and / or wireless network; A first collection module is disposed in the extraction tank and is used to collect the liquid level value of the extraction liquid; The second collection module is arranged on the filter plate and is used to collect the weight value of the ore; A third collection module is disposed in the extraction tank and is used to collect the pH value of the extract; A data processing module, used to compare the pH value with a preset pH value threshold to determine whether to generate a detection instruction; If a detection instruction is generated, the weight value of i groups within a period of time t is obtained, where t is a value greater than 1 and i is an integer greater than 1; The difference between each two adjacent groups of weight values ​​is calculated to obtain the difference between the i-1 groups of weight values, an analysis set is established for the i-1 groups of weight value differences, an average value of the analysis set is calculated, the average value is compared with a preset average value threshold, and a determination is made as to whether a leaching completion instruction is generated.

[0011] Preferably, the method for collecting the weight value includes: Obtain the real-time liquid level value, and compare the real-time liquid level value with the preset liquid level value threshold; If the liquid level value is less than or equal to the preset liquid level value, the second acquisition module acquires the weight value; If the liquid level value is greater than the preset liquid level value, the second acquisition module does not work.

[0012] Preferably, the method for determining whether to generate a detection instruction includes: If the pH value is greater than or equal to the preset pH value threshold, a detection instruction is generated; If the pH value is less than the preset pH value threshold, no detection instruction is generated.

[0013] Preferably, the method for determining whether to generate a leaching completion instruction comprises: If the average value is less than or equal to the preset average value threshold, a leaching completion instruction is generated; If the average value is greater than the preset average value threshold, no leaching completion instruction is generated.

[0014] It can be seen from the above technical solutions that the present application has the following beneficial effects: The present application has discovered that the reason why the current production efficiency or resource waste of precious metals in ores cannot be taken into account is that the set time obtained based on experience may not necessarily allow the precious metals in the ore to complete the transformation into the aqueous phase. Based on the discovery of this reason, the present application creatively determines whether the precious metals are completely transformed by combining weight and pH changes, and then extracts them when they are completely transformed. At the same time, after the filter plate is raised, the ore and the extract are separated. At this time, the weight of the filter plate is obtained, and the weight of the ore can be determined. When the filter plate is lowered, the extract flows through the filter plate, which backwashes the filter plate and avoids clogging of the filter plate. Therefore, the device of the present application also has a self-cleaning effect, which is conducive to continuous production. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0016] Figure 1 A schematic diagram of the overall structure of a high-efficiency precious metal extraction device provided by the present invention; Figure 2 A schematic cross-sectional view of a high-efficiency precious metal extraction device provided by the present invention; Figure 3A schematic diagram of a partial cross-sectional structure of a high-efficiency precious metal extraction device provided by the present invention; Figure 4 A schematic diagram of the overall structure of a driving spindle of a high-efficiency precious metal extraction device provided by the present invention; Figure 5 A schematic diagram of a sectional structure of a driven shaft of a high-efficiency precious metal extraction device provided by the present invention; Figure 6 A schematic cross-sectional view of a spiral rod and a support base of a high-efficiency precious metal extraction device provided by the present invention; Figure 7 A schematic cross-sectional structure diagram of a filter plate and a support seat of a high-efficiency precious metal extraction device provided by the present invention; Figure 8 A flow chart of a control system for a high-efficiency precious metal extraction device provided by the present invention.

[0017] Description of the drawings: 1. Extraction tank; 11. Feed pipe; 12. Discharge pipe; 2. Driving spindle; 21. First gear block; 3. Driven shaft; 301. Second gear block; 302. First tooth groove; 31. Screw rod; 311. Reciprocating spiral groove; 312. Second tooth groove; 4. Filter plate; 41. Support seat; 411. Sleeve; 4111. Slider; 412. Guide seat; 5. Fixed seat; 51. Guide rod; 6. Motor. DETAILED DESCRIPTION

[0018] The following description is merely exemplary in nature and is not intended to limit the present disclosure, application, and use. It should be understood that in all of these figures, the same or similar reference numerals indicate the same or similar parts and features. The various drawings only schematically represent the concepts and principles of the embodiments of the present disclosure, and do not necessarily show the specific dimensions and proportions of the various embodiments of the present disclosure. Specific parts in specific drawings may be exaggerated to illustrate the relevant details or structures of the embodiments of the present disclosure.

[0019] Example 1 See also Figure 1 and Figure 2 As shown, a high-efficiency precious metal extraction device includes an extraction tank 1, which is used for mixing ore and extractant for reaction and can provide the temperature required for the reaction. The extraction tank 1 is heated by a resistance heater or steam, which is not specifically limited here. A feed pipe 11 is fixed to the top of the extraction tank 1, and a discharge pipe 12 is fixed to the bottom of the extraction tank 1. The feed pipe 11 and the discharge pipe 12 are used for feeding and discharging, respectively. For example, during extraction, the ore is ground into particles and added to the extraction tank 1 from the feed pipe 11, and the extractant is added according to the weight of the ore particles. The extraction tank 1 is heated for reaction so that the precious metals and other base metals in the ore are converted into water phase, that is, dissolved in the extractant.

[0020] It should be noted that valves (not shown) are installed on the feed pipe 11 and the discharge pipe 12 to control the opening and closing of the feed pipe 11 and the discharge pipe 12 .

[0021] For further information, see Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, a motor 6 is fixed on the top of the extraction tank 1, and a driving spindle 2 is connected to the output end of the motor 6. The driving spindle 2 is rotatably connected to the extraction tank 1. A driven shaft 3 is sleeved on the bottom of the driving spindle 2, and a first tooth block 21 is evenly fixed on the outer surface of the driving spindle 2. A first tooth groove 302 that matches the first tooth block 21 is evenly opened on the inner wall of the driven shaft 3, so that the driving spindle 2 can drive the driven shaft 3 through the first tooth block 21 and the first tooth groove 302, and does not affect the sliding of the driven shaft 3 on the driving spindle 2. A stirring blade is evenly fixed on the outer surface of the driven shaft 3. The motor 6 drives the driven shaft 3 to rotate through the driving spindle 2, and the driven shaft 3 can drive the stirring blade to stir, thereby accelerating the mixing of the extract and the ore particles.

[0022] For details, see Figure 2 and Figure 3 As shown, a filter plate 4 is slidably and sealably connected inside the extraction tank 1, and a support seat 41 is slidably connected to the middle of the filter plate 4, that is, the filter plate 4 can slide up and down along the axis of the support seat 41, and the driven shaft 3 is rotatably connected to the support seat 41. When the driven shaft 3 moves up and down, it can drive the support seat 41 to move up and down, and prevent the support seat 41 from rotating with the driven shaft 3. The filter plate 4 is used to filter solid matter, that is, to separate ore particles and extract; For more details, see Figure 2 , Figure 5 , Figure 6 and Figure 7 As shown, a sleeve 411 is fixed to the bottom of the support seat 41, and the sleeve 411 is slidably sealed and connected to the bottom of the extraction tank 1, a slider 4111 is fixed to the bottom of the sleeve 411, a spiral rod 31 is sleeved on the bottom of the driven shaft 3, a second tooth block 301 is evenly fixed to the outer surface of the bottom of the driven shaft 3, and a second tooth groove 312 that matches the second tooth block 301 is evenly opened on the inner wall of the spiral rod 31, so that the driven shaft 3 can drive the spiral rod 31 to rotate through the cooperation of the second tooth block 301 and the second tooth groove 312, while not affecting the driven shaft 3 to be able to rise and fall in the spiral rod 31; A reciprocating spiral groove 311 is provided on the outer surface of the screw rod 31, and the slider 4111 is slidably connected to the reciprocating spiral groove 311. The purpose is that when the screw rod 31 rotates with the driven shaft 3, the reciprocating spiral groove 311 can push the slider 4111, so that the sleeve 411 moves up and down with the slider 4111, thereby moving the filter plate 4 up and down. When the filter plate 4 moves upward, the extract is separated to the bottom of the filter plate 4, and only the ore particles are retained on the filter plate 4. When the filter plate 4 moves downward, the extract is immersed in the top of the filter plate 4, and the filter plate 4 can be backwashed to avoid clogging of the filter holes on the surface of the filter plate 4. In addition, when the filter plate 4 moves up and down, the extract rolls, and the stirring of the stirring blades further accelerates the integration of precious metals or base metals in the ore particles into the extract.

[0023] For more details, see Figure 1 and Figure 2 As shown, a fixing seat 5 is fixed to the bottom of the extraction tank 1, a guide rod 51 is fixed to the upper surface of the fixing seat 5, and the top of the guide rod 51 is fixed to the bottom of the extraction tank 1, the bottom of the screw rod 31 is rotatably connected to the fixing seat 5 to ensure the stability of the rotation of the screw rod 31, and a guide seat 412 is fixed to the bottom of the sleeve 411, and the guide seat 412 is slidably connected to the guide rod 51 to prevent the sleeve 411 from rotating with the screw rod 31, so that when the screw rod 31 rotates, the sleeve 411 can reciprocate up and down.

[0024] It is worth mentioning that see Figure 1 As shown, a solid discharge pipe is fixed on the side of the extraction tank 1, and the fixed discharge pipe is opened and closed by a flap valve. After the extraction reaction is completed, the stirring blades rotate during the rising process of the filter plate 4, and the ore particles can be pushed out from the fixed discharge pipe.

[0025] Example 2 See also Figure 2 and Figure 8 As shown, a control system of a high-efficiency precious metal extraction device is implemented based on a high-efficiency precious metal extraction device in the above embodiment, and the control system includes: a first acquisition module, a second acquisition module, a third acquisition module and a data processing module, wherein each module is connected through a wired and / or wireless network.

[0026] The first acquisition module is used to collect the liquid level value of the extraction liquid. The first acquisition module of this embodiment adopts a sensor that can detect the liquid level, such as an ultrasonic sensor or a water immersion sensor, which is not specifically limited here. The first acquisition module of this embodiment can be installed on the top of the extraction tank 1. Taking the ultrasonic sensor as an example, the ultrasonic sensor determines the liquid level value by emitting ultrasonic waves and measuring their return time. Specifically, the sensor emits ultrasonic waves and receives the reflected signal. The distance between the liquid and the sensor can be calculated according to the time delay of the signal, thereby determining the liquid level value.

[0027] The second acquisition module is used to collect the weight value of the ore. In this embodiment, the second acquisition module uses a pressure sensor or a weighing sensor to obtain the weight value of the ore. No specific limitation is made here. Specifically, the second acquisition module is installed on the support seat 41 in the first embodiment, and the detection end is against the bottom of the filter plate 4. Since the filter plate 4 can slide on the support seat 41, the entire weight of the filter plate 4 can be transferred to the second acquisition module. When the filter plate 4 rises away from the extract, only ore particles exist on the filter plate 4. Then, the weight value obtained by the second acquisition module minus the weight of the filter plate 4 itself is the ore weight value. In this embodiment, it is assumed that the second data acquisition module subtracts the weight of the filter plate 4 itself according to the set program; It should be noted that the power supply line and communication cable of the second acquisition module can be embedded in the casing 411, and the method for collecting the weight value includes: obtaining the real-time liquid level value, and comparing the real-time liquid level value with the preset liquid level value threshold; if the liquid level value is less than or equal to the preset liquid level value, the second acquisition module collects the weight value; if the liquid level value is greater than the preset liquid level value, the second acquisition module does not work, and the preset liquid level value is the liquid level value collected by the technicians in this field after measuring the rise of the filter plate 4 away from the extract as the preset liquid level value; the purpose is to avoid the second acquisition module from working all the time and only obtain the weight value when the filter plate 4 is away from the extract, because if the filter plate 4 is in the extract, the weight value obtained has no reference value; The third acquisition module is used to collect the pH value of the extract. In this embodiment, the third acquisition module uses a pH sensor. For example, the pH sensor is fixed in the extraction tank 1. The pH sensor is based on the change of the potential difference of the glass electrode. When the acidity and alkalinity of the solution change, the potential difference between the glass electrode and the reference electrode will also change. This potential difference can be measured by the circuit between the electrodes, and the pH value of the solution is calculated according to the measurement result. A data processing module, used to compare the pH value with a preset pH value threshold to determine whether to generate a detection instruction; If a detection instruction is generated, the weight value of group i within a period of t is obtained, where t is a value greater than 1 and i is an integer greater than 1, that is, a detection time is set and the detection is performed within the detection time, and the unit of t is minutes; The difference between each two adjacent groups of weight values ​​is calculated to obtain the difference in weight values ​​of group i-1, and an analysis set is established for the difference in weight values ​​of group i-1. The average value of the analysis set is calculated, and the average value is compared with the preset average value threshold to determine whether a leaching completion instruction is generated; that is, after the precious metal or base metal in the ore is converted into the aqueous phase, the weight will become smaller. If the ore is fully reacted, its weight will basically not change. Therefore, when the pH value meets the set conditions of this embodiment, the change in the weight value of the ore is tested. If the difference in the weight value of group i-1 is smaller, it means that the ore tends to be fully reacted and the work can be stopped.

[0028] The purpose of this embodiment is to automatically determine the reaction status of the ore in real time and adaptively control the reaction time to avoid the reaction time being too short, resulting in insufficient extraction, and to avoid the reaction time being too long, increasing the generation energy consumption and reducing the extraction efficiency.

[0029] Specifically, the method for determining whether to generate a detection instruction includes: if the pH value is greater than or equal to a preset pH value threshold, a detection instruction is generated; if the pH value is less than the preset pH value threshold, no detection instruction is generated; the preset pH value threshold is determined by the staff in this field according to the specific ore precious metal components and the extraction liquid used. During the ore extraction process, the pH value of the extraction liquid changes depending on the type of ore being processed. The chemical reactions involved in the leaching process will cause acids or bases to be released into the leachate, thereby affecting the pH value. If the leaching reaction produces acidic substances, the pH value will decrease; on the contrary, if the leaching reaction produces alkaline substances, the pH value will increase, that is, the technicians in this field obtain the pH value of the extraction liquid after the precious metals in the reacted ore are fully converted into the aqueous phase under the experimental environment, and set the preset pH value threshold as a reference ratio; this embodiment uses a type of precious metal that reacts alkalinity or consumes acidic substances in the extraction liquid, such as gold metal, so when the ore is fully reacted, the acidic components in the extraction liquid become less, and the pH value will increase. At this time, it can be preliminarily determined that the ore reaction is approaching completion, and a detection instruction is generated, and the result can be further confirmed.

[0030] More specifically, the method for determining whether to generate a leaching completion instruction includes: if the average value is less than or equal to a preset average value threshold, a leaching completion instruction is generated; if the average value is greater than the preset average value threshold, no leaching completion instruction is generated; the preset average value threshold is obtained by technical personnel in the field based on a large number of experiments. After the precious metal or base metal in the ore is converted into an aqueous phase, the weight will become smaller. If the ore is fully reacted, its weight will basically not change. Therefore, technical personnel in the field, when collecting the ore after it is fully reacted and continues to react, obtain multiple groups of ore weight values ​​for multiple times, and obtain the difference change, and select the median as the preset average value threshold. The smaller the preset average value threshold, the smaller the difference change.

[0031] The exemplary implementation scheme of the present disclosure is described in detail above with reference to the preferred embodiments. However, it can be understood by those skilled in the art that, without departing from the concept of the present disclosure, various modifications and variations can be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present disclosure can be combined in various ways without exceeding the protection scope of the present disclosure, which is determined by the attached claims.

Claims

1. An efficient precious metal extraction device, characterized in that: include: An extraction tank (1) having a central portion rotatably connected to a driving main shaft (2); A driven shaft (3) is sleeved on the driving main shaft (2), and the driving main shaft (2) is used to drive the driven shaft (3) to rotate; The filter plate (4) has a support seat (41) slidably connected in the middle, the driven shaft (3) is rotatably connected to the support seat (41), and the filter plate (4) is used to filter solid matter; A sleeve (411) is fixed to the bottom of the support base (41), and the sleeve is slidably and sealingly connected to the extraction tank (1), and a sliding block (4111) is fixed to the bottom of the sleeve (411); A spiral rod (31) is sleeved on the bottom of the driven shaft (3); a reciprocating spiral groove (311) is formed on the outer surface of the spiral rod (31), and the sliding block (4111) is slidably connected to the reciprocating spiral groove (311); The fixing seat (5) is fixed to the bottom of the extraction tank (1), and the bottom of the spiral rod (31) is rotatably connected to the fixing seat (5).

2. The efficient precious metal extraction device according to claim 1, characterized in that: The outer surface of the driving main shaft (2) is evenly fixed with a first tooth block (21), and the inner wall of the driven shaft (3) is evenly provided with a first tooth groove (302) that matches the first tooth block (21).

3. The efficient precious metal extraction device according to claim 1, characterized in that: A second tooth block (301) is evenly fixed to the outer surface of the bottom of the driven shaft (3), and a second tooth groove (312) matching the second tooth block (301) is evenly formed on the inner wall of the spiral rod (31).

4. The efficient precious metal extraction device according to claim 1, characterized in that: A guide rod (51) is fixed to the upper surface of the fixing seat (5), and the fixing seat (5) is fixedly connected to the bottom of the extraction tank (1) via the guide rod (51). A guide seat (412) is fixed to the bottom of the sleeve (411), and the guide seat (412) is slidably connected to the guide rod (51).

5. The efficient precious metal extraction device according to claim 1, characterized in that: A feed pipe (11) is fixed to the top of the extraction tank (1), and a discharge pipe (12) is fixed to the bottom of the extraction tank (1). The feed pipe (11) and the discharge pipe (12) are used for feeding and discharging, respectively.

6. The efficient precious metal extraction device according to claim 1, characterized in that: A motor (6) is fixed on the top of the extraction tank (1), and an output end of the motor (6) is connected and fixed to the driving main shaft (2).

7. A control system for a high-efficiency precious metal extraction device, applied to a high-efficiency precious metal extraction device according to any one of claims 1 to 6, characterized in that: The control system comprises: a first acquisition module, a second acquisition module, a third acquisition module and a data processing module, wherein each module is connected via a wired and / or wireless network; A first collection module, arranged in the extraction tank (1), for collecting a liquid level value of the extraction liquid; A second collection module, arranged on the filter plate (4), for collecting the weight value of the ore; A third collection module, disposed in the extraction tank (1), for collecting the pH value of the extract; A data processing module, used to compare the pH value with a preset pH value threshold to determine whether to generate a detection instruction; If a detection instruction is generated, the weight value of i groups within a period of time t is obtained, where t is a value greater than 1 and i is an integer greater than 1; The difference between each two adjacent groups of weight values ​​is calculated to obtain the difference between the i-1 groups of weight values, an analysis set is established for the i-1 groups of weight value differences, an average value of the analysis set is calculated, the average value is compared with a preset average value threshold, and a determination is made as to whether a leaching completion instruction is generated.

8. The control system of a high-efficiency precious metal extraction device according to claim 7, characterized in that: The method for collecting the weight value includes: Obtain the real-time liquid level value, and compare the real-time liquid level value with the preset liquid level value threshold; If the liquid level value is less than or equal to the preset liquid level value, the second acquisition module acquires the weight value; If the liquid level value is greater than the preset liquid level value, the second acquisition module does not work.

9. The control system of a high-efficiency precious metal extraction device according to claim 7, characterized in that: The method for determining whether to generate a detection instruction includes: If the pH value is greater than or equal to the preset pH value threshold, a detection instruction is generated; If the pH value is less than the preset pH value threshold, no detection instruction is generated.

10. The control system of a high-efficiency precious metal extraction device according to claim 7, characterized in that: The method for determining whether to generate a leaching completion instruction includes: If the average value is less than or equal to the preset average value threshold, a leaching completion instruction is generated; If the average value is greater than the preset average value threshold, no leaching completion instruction is generated.

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