Integrated liquid addition and shaking wet metallurgical crucible volumizing apparatus and method

Abstract

The application belongs to the technical field of hydrometallurgical analysis and detection, and provides a hydrometallurgical crucible constant volume device and method integrating liquid adding and shaking, which comprises ground rail robots and rack boxes arranged side by side, the rack boxes are provided with cooling and buffering area mechanisms, drop shaking area mechanisms, water bath heating area mechanisms and peristaltic pump drop mechanisms; through cooperation of the ground rail robots, the cooling and buffering area mechanisms, the drop shaking area mechanisms, the water bath heating area mechanisms and the peristaltic pump drop mechanisms, high integration and seamless connection of the production process are realized; through cooperation of the guide rails, the sliding blocks, the racks and the gears in the drop shaking area mechanisms and the peristaltic pump drop mechanisms, accurate control of liquid adding and shaking can be realized, and meanwhile, the shaking effect is ensured through phased shaking.

Description

Technical Field

[0001] This invention belongs to the field of hydrometallurgical analysis and detection technology, and particularly relates to a hydrometallurgical crucible volume-fixing device and method that integrates liquid addition and shaking. Background Technology

[0002] Hydrometallurgical analysis of gold is a core method for quantitative analysis of gold-bearing materials after pyrometallurgical assays. The accuracy and precision of its analytical results directly affect the economic benefits of mineral resource assessment, gold transaction settlement, and smelting process control. Acid evaporation and volume adjustment serve as a crucial bridge connecting sample pretreatment and final titration analysis. This process mainly involves adding sodium chloride, aqua regia, and hydrochloric acid solution to a crucible, heating to evaporate the acid, completely dissolving the sample, and then adjusting the volume for subsequent titration analysis.

[0003] Although some automated equipment is currently used in wet testing, there are problems with insufficient and uneven liquid addition in the acid evaporation and volume determination process. In addition, there are also problems with poor process connection in the acid evaporation and volume determination process. Summary of the Invention

[0004] To address the aforementioned problems, this invention proposes a wet refining crucible volume-fixing device and method integrating liquid addition and shaking. Through the coordination of a ground-rail robot, a cooling buffer area mechanism, a dripping and shaking area mechanism, a water bath heating area mechanism, and a peristaltic pump dripping mechanism, a high degree of integration and seamless connection of the production process is achieved. The precise control of liquid addition and shaking is realized through the coordination of guide rails, sliders, racks, and gears in the dripping and shaking area mechanism, as well as the peristaltic pump dripping mechanism. Furthermore, the staged shaking method ensures effective shaking.

[0005] To achieve the above objectives, in a first aspect, the present invention provides a wet gold refining crucible volume-regulating device that integrates liquid addition and shaking, employing the following technical solution: A wet refining crucible volume-fixing device integrating liquid addition and shaking includes a ground-rail robot and a frame box arranged side by side. The frame box is equipped with a cooling buffer area mechanism, a drip shaking area mechanism, a water bath heating area mechanism, and a peristaltic pump dripping mechanism. The droplet mixing area mechanism includes multiple second support frames mounted on the frame housing, a first support plate and a second support plate mounted on the second support frames and parallel to each other, two guide rails mounted on the first support plate and the second support plate respectively, and a second heat insulation plate mounted on the guide rails via a slider; the second heat insulation plate is connected to the slider, a rack is mounted on the second heat insulation plate, a servo motor is mounted on the first support plate, and a gear that meshes with the rack is mounted on the output shaft of the servo motor; The ground-rail robot places the carbonized and ashed crucible rack into the cooling buffer area mechanism. After cooling, the ground-rail robot places the crucible rack into the dripping and shaking area mechanism, and uses a peristaltic pump dripping mechanism to drip liquid. The dripping and shaking area mechanism uses a staged shaking method to shake the liquid.

[0006] Furthermore, the ground-rail robot includes a ground rail, a robot mounted on the ground rail, and grippers mounted on the robot.

[0007] Furthermore, the rack enclosure is configured as a box structure, and the rack enclosure includes an upper rack enclosure and a lower rack enclosure that are connected to each other, and the lower rack enclosure includes multiple independent spaces.

[0008] Furthermore, the cooling buffer area mechanism is located on one side of the rack housing platform. The cooling buffer area mechanism includes a first heat insulation plate disposed on the rack housing, a first support rod disposed on the rack housing 2 via a first support frame, and a buffer heat insulation plate disposed on the first support rod away from the first support frame.

[0009] Furthermore, the dripping and shaking area mechanism includes multiple second support frames disposed on the frame housing, multiple second support frames disposed on the second support frames, a first support plate and a second support plate disposed on the second support frames and parallel to each other, two guide rails disposed on the first support plate and the second support plate respectively, a second heat insulation plate disposed on the guide rails by a slider, and a gantry frame disposed on the frame housing; a Y-shaped plate is disposed at the lower part of one end of the second heat insulation plate near the first support plate, and a rack is disposed on the Y-shaped plate.

[0010] Furthermore, the peristaltic pump dripping mechanism includes a peristaltic pump assembly, a valve assembly, hoses, a stirrer, a first pump, a second pump, a third pump, a fourth pump, a first storage tank, a second storage tank, a third storage tank, and a fourth storage tank; the first pump, the second pump, the third pump, and the fourth pump are respectively placed in the left and right independent spaces of the lower frame box; the first storage tank, the second storage tank, the third storage tank, and the fourth storage tank are respectively placed on the left and right sides of the frame box; the stirrer is placed behind the cooling buffer area mechanism, the peristaltic pump assembly is placed behind the water bath heating area mechanism, the storage tanks are connected to the pumps through a pumping pipe, the peristaltic pump is connected to the pumps through a pumping pipe, the valve assembly is connected to the peristaltic pump assembly, multiple hoses are respectively connected to the valve assembly, and the dripping head is connected to the hose; The first pump draws liquid from the first storage tank containing saturated sodium chloride solution, and through the peristaltic pump group and corrosion valve group, draws a preset amount of liquid; this liquid is then dripped into the crucible through a hose and a drip head. Simultaneously, the third and fourth pumps draw concentrated hydrochloric acid and concentrated nitric acid solutions from the third and fourth storage tanks, respectively, and inject them into the stirrer according to a preset ratio. Then, through the peristaltic pump group and corrosion valve group, a preset amount of aqua regia is drawn and dripped into the crucible through a hose and a drip head. The gears and racks move at regular intervals to ensure that each crucible receives the required amount of solution.

[0011] To achieve the above objectives, in a second aspect, the present invention also provides a method for volume determination of a wet alchemical crucible that integrates liquid addition and shaking, employing the following technical solution: A method for volume determination of a wet gold refining crucible integrating liquid addition and shaking, using the wet gold refining crucible volume determination equipment integrating liquid addition and shaking as described in the first aspect, includes: the ground-rail robot placing the carbonized and ashed crucible rack into the cooling buffer area mechanism; after cooling, the ground-rail robot placing the crucible rack into the dripping and shaking area mechanism, and dripping liquid using a peristaltic pump dripping mechanism; the dripping and shaking area mechanism uses a staged shaking method for shaking.

[0012] Furthermore, the ground-rail robot places the carbonized and ashed crucible rack onto the first heat insulation plate in the cooling buffer area mechanism. After cooling for 10 minutes, the ground-rail robot places the crucible rack into the dripping and shaking area mechanism and uses the peristaltic pump dripping mechanism 7 to drip the liquid; the crucible after dripping in sodium chloride and aqua regia is shaken in the first stage.

[0013] Furthermore, after the first stage of mixing, the ground-rail robot places the crucible rack on the water bath heating area mechanism for acid evaporation. After the acid evaporation is completed, the hot crucible rack is transferred to the drip mixing area mechanism. The pump draws hydrochloric acid solution from the storage tank and adds the liquid to the crucible through the peristaltic pump group and valve group. The gears and racks move at intervals to ensure that each crucible is dripped with solution. Then, the second mixing stage begins. The ground-rail robot moves the crucible rack placed on the buffer insulation plate to the water bath heating area mechanism for heating.

[0014] Furthermore, the shaking is achieved by using a servo motor to drive a gear rack, which in turn drives the slider carrying the crucible to perform linear reciprocating motion on the slide rail. The control relationship is as follows: Rack displacement formula: ; ; in, This represents the linear displacement of the rack; Let be the pitch circle radius of the gear; The angular displacement of the servo motor is given; the sinusoidal reciprocating motion of the rack is: ; in, The amplitude; For frequency, For time; The angular displacement command executed by the servo motor is: ; The corresponding motor speed is: ; Total shaking time T This determines the duration and frequency of motion execution. f Together they determine the total number of round trips. N : .

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention achieves a high degree of integration and seamless connection of the production process through the cooperation of a ground-rail robot, a cooling buffer area mechanism, a dripping and shaking area mechanism, a water bath heating area mechanism, and a peristaltic pump dripping mechanism; through the cooperation of guide rails, sliders, racks and gears in the dripping and shaking area mechanism, as well as the peristaltic pump dripping mechanism, precise control of liquid addition and shaking can be achieved, and at the same time, the shaking effect is guaranteed by the staged shaking method. 2. This invention constructs a fully modular integrated working device that integrates multiple independent functional modules, such as a ground-rail robot, shaking, water bath heating, cooling buffer, and high-precision liquid addition, into a compact fixed frame box. Through unified scheduling by the ground-rail robot, the crucible rack achieves fully automatic and seamless flow between processes such as cooling, liquid addition, shaking, and heating, solving the problems of poor process connection and scattered site in traditional manual or semi-automatic equipment.

[0016] 3. This invention utilizes a phased programmable sinusoidal shaking method to quantify, for the first time, fuzzy operations such as gentle shaking that rely on experience into precise control parameters based on sinusoidal motion trajectories and programmable in stages. The first stage aims to wet the NaCl solution and aqua regia, using low frequency, medium amplitude, short duration, and slow start-stop to achieve gentle mixing and prevent splashing. The second stage aims to dissolve the hydrochloric acid, using medium frequency, small amplitude, short duration, and high stability to match the mass transfer and dissolution of hot hydrochloric acid and solid residues.

[0017] 4. This invention uses a pump to pump concentrated nitric acid and concentrated hydrochloric acid into a stirred reaction flask in a specific ratio, instantly generating aqua regia. This avoids the safety and spoilage risks associated with pre-prepared aqua regia storage and transportation, and enables online instant preparation. The use of a high-precision peristaltic pump group and multi-channel valve group, combined with a movable drip head, allows for sequential and quantitative liquid addition to multiple crucibles, ensuring consistency in the processing conditions of each sample within a batch, and achieving precise liquid separation and dripping.

[0018] 5. This invention innovatively designs a cooling buffer area and optimizes the robot handling logic, enabling the most time-consuming water bath heating process to be carried out in parallel with processes such as liquid addition and shaking. This optimizes the system bottleneck from single-item processing time to pallet turnover cycle time, greatly improving the overall equipment utilization and testing throughput.

[0019] 6. This invention addresses the core pain points of wet gold testing, such as reliance on manual experience, poor operational accuracy, low consistency, poor process integration, and high safety risks. By transforming vague process experience into precise and controllable motion parameters and liquid addition commands, it achieves precise control of the liquid droplets through a peristaltic pump set and provides real-time feedback of titration data, thus achieving accurate titration. Utilizing a staged shaking strategy, it controls the frequency, amplitude, and time of different stages to achieve a uniform shaking process. This systematically solves the problems of uneven mixing, inaccurate liquid addition, large batch fluctuations, and personnel exposure to corrosive reagents in traditional processes. It achieves a high degree of integration and seamless connection of the production process, improving the precision, accuracy, and processing efficiency of the final test results. Attached Figure Description

[0020] The accompanying drawings, which form part of this embodiment, are used to provide a further understanding of this embodiment. The illustrative embodiments and their descriptions are used to explain this embodiment and do not constitute an improper limitation of this embodiment.

[0021] Figure 1 This is a top view of the device according to Embodiment 1 of the present invention; Figure 2 This is a side view of the device according to Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the rack enclosure structure according to Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the cooling buffer area mechanism in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the droplet mixing region mechanism in Embodiment 1 of the present invention; Figure 6 This is a side view of the liquid mixing region mechanism in Embodiment 1 of the present invention; Figure 7 This is a top view of the droplet mixing area mechanism of Embodiment 1 of the present invention; Figure 8This is a schematic diagram of the gantry frame in Embodiment 1 of the present invention; Figure 9 This is a schematic diagram of the water bath heating area mechanism in Embodiment 1 of the present invention; Figure 10 This is a schematic diagram of the crucible rack structure according to Embodiment 1 of the present invention; Among them, 1. Ground-rail robot; 11. Ground rail; 12. Robot; 13. Gripper; 2. Frame box; 21. Upper frame box; 22. Lower frame box; 3. Cooling buffer area mechanism; 31. First support frame; 32. First support rod; 33. Buffer heat insulation plate; 34. First heat insulation plate; 4. Dropping and shaking area mechanism; 41. Second support frame; 42. Second support rod; 43. Slider; 44. First support plate; 45. Motor fixing shell; 46. Gear; 47. Rack; 48. Second support plate; 49. Servo motor; 410. Guide rail; 411. Y-shaped plate; 412. Second heat insulation plate; 413. Positioning pin; 414. Gantry frame; 5. Water bath heating zone mechanism; 6. Crucible rack; 61. Ear bracket; 62. Crucible; 63. Support; 7. Peristaltic pump dripping mechanism; 71. Peristaltic pump assembly; 72. Valve assembly; 73. Hose; 74. Drip head; 75. Stirrer; 76. First pump; 77. Second pump; 78. Third pump; 79. Fourth pump; 710. First storage tank; 711. Second storage tank; 712. Third storage tank; 713. Fourth storage tank. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] Example 1: Wet gold assay is a core method for quantitative analysis of gold-containing materials after pyrometallurgical assay. The accuracy and precision of its analytical results directly affect the economic benefits of mineral resource assessment, gold transaction settlement, and smelting process control. This assay typically involves multiple complex steps, including sample dissolution, filtration and adsorption, carbonization and ashing, acid evaporation and volume adjustment, and titration. Among these, acid evaporation and volume adjustment serves as a crucial bridge connecting sample pretreatment and final titration analysis. Its function is to dissolve the elemental gold obtained after carbonization and ashing in aqua regia and convert it into stable chloroauric acid. This is followed by acid evaporation and volume adjustment with hydrochloric acid to form a standard solution suitable for titration analysis. This mainly involves adding sodium chloride, aqua regia, and hydrochloric acid solution to a crucible, heating and evaporating the acid to completely dissolve the sample and adjust the volume for subsequent titration analysis.

[0025] Traditional methods rely on manual operation, which suffers from low efficiency, poor consistency, and high risk of operators coming into contact with highly corrosive reagents. Although some automated equipment is currently used in wet testing, most systems have low integration, especially in the acid evaporation and volume adjustment process, where problems such as insufficient liquid addition accuracy, uneven mixing, and poor process coordination still exist.

[0026] To solve at least one of the above problems, such as Figure 1 and Figure 2 As shown, this embodiment provides a wet alchemy crucible volume-fixing device that integrates liquid addition and shaking, which is suitable for automated liquid addition, shaking, acid evaporation, and volume-fixing operations in large-scale sample processing. The device includes a ground-rail robot 1 and a frame box 2 arranged side by side. The frame box 2 is equipped with a cooling buffer area mechanism 3, a dripping and shaking area mechanism 4, a water bath heating area mechanism 5, and a peristaltic pump dripping mechanism 7, etc.

[0027] like Figure 1 , Figure 2 and Figure 10 As shown, the ground-rail robot 1 includes a ground rail 11, a robot 12 mounted on the ground rail 11, and grippers 13 mounted on the robot 12. Specifically, the grippers 13 can accurately grasp and transfer a crucible rack 6 carrying multiple crucibles 62, and the crucible rack 6 can hold 20 crucibles 62; the ground rail 11 is placed on the ground parallel to the frame box 2, and after grasping the crucible rack 6, it moves the crucible rack 6 to the storage station.

[0028] like Figure 3 As shown, the rack housing 2 is configured as a box structure with a certain volume (approximately 2.7m high, 1.8m long, and 1m wide); the volume of the box can be set to approximately 2.7m high, 1.8m long, and 1m wide. The rack housing 2 includes an upper rack housing 21 and a lower rack housing 22 connected to each other. The lower rack housing 22 includes three independent spaces 23. Specifically, the rack housing 2 has a hollow interior and thin walls with a certain thickness. There is a platform at a height of 0.8m. Below the platform, it is divided into three independent spaces 23 by a partition. The middle independent space has a rectangular opening with the platform, and the left and right independent spaces have two openings with the platform.

[0029] like Figure 4As shown, the cooling buffer area mechanism 3 is located on one side of the rack housing 2 platform. The cooling buffer area mechanism 3 includes a first heat insulation plate 34 mounted on the rack housing 2 via positioning pins, a first support rod 32 mounted on the rack housing 2 via a first support frame 31, and a buffer heat insulation plate 33 mounted on the first support rod 32 away from the first support frame 31. Optionally, the first heat insulation plate 34 is located at the bottom, has four positioning pins, and four first support frames 31 are arranged at the four corners around it. The first support frames 31 can be inserted into the first support rod 32, and four connecting parts extend outward from the four corners of the buffer heat insulation plate 33 and connect to the first support rod 32.

[0030] like Figure 1 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the drip mixing area mechanism 4 includes multiple second support frames 41 mounted on the frame housing 2, multiple second support frames 42 mounted on the second support frames 41, a first support plate 44 and a second support plate 48 mounted on the second support frames 42 and parallel to each other, two guide rails 410 mounted on the first support plate 44 and the second support plate 48 respectively, a second heat insulation plate 412 mounted on the guide rails 410 via a slider 43, and a gantry frame 414 mounted on the frame housing 2; the second heat insulation plate 412 can be connected to the slider 43 via a positioning pin 413; a Y-shaped plate 411 is provided at the lower part of one end of the second heat insulation plate 412 near the first support plate 44, and a rack 47 is provided on the Y-shaped plate 411; a servo motor 49 is mounted on the first support plate 44 via a motor fixing housing 45, and a gear 46 that meshes with the rack 47 is provided on the output shaft of the servo motor 49.

[0031] Optionally, the second support frame 41 is located in the central independent space below the platform of the lower frame box 22, with four on the left side placed symmetrically in parallel, and the same applies to the two on the right side. The four second support frames 41 on the left are connected to four second support rods 42, which are then connected in the opposite direction to the four second support frames 41. A first support plate 44 is connected above the second support frame 41, and a U-shaped groove is cut in the middle of the first support plate 44. Servo motors 49 are placed vertically in the U-shaped groove, and the servo motors 49 are connected to gears 46. The gears 46 mesh with racks 47. A motor fixing shell 45 is located outside the servo motors 49, and the motor fixing shell 45 is connected to the first support plate 44. The guide rail 410 is parallel to the rack 47, and there are two sliders 43 with a certain distance between them on the guide rail 410. The upper planes of the sliders 43 and the rack 47 are coplanar, and the sliders 43 are fixed to the Y-shaped plate 411 with bolts. Two second support frames 41 on the right side are connected to two second support rods 42, which in turn are connected to two more second support frames 41 in the opposite direction. A second support plate 48 is connected above the second support frames 41. Identical slide rails 410 and sliders 43 are placed on the second support plate 48. The sliders 43 are also bolted to the Y-shaped plate 411. The heat insulation plate 4-12 is located above the Y-shaped plate 4-11 and is bolted to it. The second heat insulation plate 412 is coplanar with the lower frame box 22 platform and has four positioning pins 413. A gantry frame 414 is also installed on the platform, with three drip heads evenly distributed at intervals along the crossbeam of the gantry frame 414.

[0032] Optionally, the drip mixing area mechanism 4 uses a servo motor to drive a gear rack, which in turn drives the slider carrying the crucible to make precise linear reciprocating motion on the slide rail. The relevant formula is as follows: Rack displacement formula: (1) (2) in, Linear displacement of the rack (unit: mm); Pitch circle radius of gear (unit: mm / rad); Angular displacement of the servo motor (unit: rad). To achieve the sinusoidal reciprocating motion of the rack, i.e.: (3) in, The amplitude is (mm). Frequency (Hz) For time (s).

[0033] The angular displacement command that the servo motor must execute is: (4) The corresponding motor speed is its derivative: (5) Total shaking time T It determines the duration of the motion execution. It is related to frequency. f Together they determine the total number of round trips. N : (6) Based on formulas (1) and (2), a basic model of mechanical transmission is established, and the rotational motion of the servo motor (output angular displacement) is established. ) and the linear motion of the final actuator (rack displacement) A deterministic proportional relationship between ( ) and ( ). This is achieved through precise control of the motor's rotation angle. This allows for unique and precise control of the linear displacement of the worktable and crucible. .

[0034] The ideal motion trajectory to be achieved by the shaking mechanism is determined according to formula (3), and the fuzzy process requirements such as gentle shaking are quantified into specific parameters. A and f These two key parameters are set precisely in stages.

[0035] Based on formulas (4) and (5), the sinusoidal trajectory defined in the process layer is converted into the angular position command that the servo motor needs to execute through the relationship in formula (1). According to the set stage parameters A and f Real-time calculation of the motor at each moment t The target position is determined, and this position command is sent to the servo driver, which drives the motor to rotate precisely.

[0036] The process control parameter frequency was established based on formula (5). ,time T Total number of round trips N The quantitative relationship between them. This is achieved by setting different (phases) , T This combination allows for precise control of the energy applied at each stage.

[0037] like Figure 9 and Figure 10 As shown, the water bath heating area mechanism 5 mainly includes a water bath, which is a cuboid with a hollow interior and thin walls. Four positioning pins are located on the top for positioning the crucible rack 6. The crucible rack 6 can hold 20 crucibles 62 in 5 rows and 4 columns. The crucible rack 6 has two rectangular lugs 61 for engaging with the positioning pins.

[0038] like Figure 1 and Figure 2As shown, the peristaltic pump dripping mechanism 7 includes a peristaltic pump assembly 71, a valve assembly 72 connected to the peristaltic pump assembly 71, a hose 73, a stirrer 75, a first pump 76, a second pump 77, a third pump 78, a fourth pump 79, a first storage tank 710, a second storage tank 711, a third storage tank 712, and a fourth storage tank 713. The first pump 76, the second pump 77, the third pump 78, and the fourth pump 79 are respectively placed in the left and right independent spaces of the lower frame housing 22 and are evenly arranged. The first storage tank 710, the second storage tank 711, the third storage tank 712, and the fourth storage tank 713 are respectively placed on the left and right sides of the frame housing 2 and are evenly arranged.

[0039] Specifically, the first liquid addition process and corresponding connections are as follows: Pump 76 draws saturated sodium chloride solution from storage tank 710 via a pumping pipe, and then pumps it into high-precision peristaltic pump assembly 71. Peristaltic pump assembly 71 precisely extracts approximately 3 drops of liquid through the left valve of the connected valve assembly 72 and the left peristaltic pump. This liquid is then dripped into crucible 62 through hose 73 and dropper head 74. Simultaneously, pumps 78 and 79 draw concentrated hydrochloric acid and concentrated nitric acid solutions from storage tanks 712 and 713 respectively via pumping pipes, and then pump them into stirred reaction flask 75 at a 3:1 ratio. Peristaltic pump assembly 71 precisely extracts approximately 2 ml of aqua regia through the right peristaltic pump and the right valve of the connected valve assembly 72. This liquid is then dripped into crucible 62 through hose 73 and dropper head 74. During this process, gear 46 and rack 47 move periodically according to the flow rate to ensure that each crucible 62 receives the required solution. Then, the first mixing stage begins.

[0040] The specific implementation process and corresponding connections for the second liquid addition are as follows: Pump 77 draws liquid from storage tank 711 containing 5% hydrochloric acid solution via a suction pipe, and then pumps it into high-precision peristaltic pump assembly 71. Peristaltic pump assembly 71 precisely extracts approximately 20 ml of liquid through the intermediate valve of valve assembly 72 connected to the peristaltic pump. This liquid is then dripped into crucible 62 through hose 73 and dropper 74. During this process, gear 46 and rack 47 move periodically according to the flow rate to ensure that each crucible 62 receives the required amount of solution. The second mixing stage then begins.

[0041] The stirrer 75 is positioned behind the cooling buffer area mechanism 3. The peristaltic pump assembly 71 is positioned behind the water bath heating area mechanism 5, and the valve assembly 72 is connected to the peristaltic pump assembly 71. Multiple hoses 73 are connected to the valve assembly 72. The drip head 74 is positioned on the gantry 414 and connected to the hose 73. Specifically, the first pump 76 draws liquid from the first storage tank 710 containing saturated sodium chloride solution, precisely extracting approximately 3 drops of liquid through the peristaltic pump assembly 71 and the corrosion valve assembly 72. This liquid is then dripped into the crucible 62 through the hose 73 and the drip head 74. Simultaneously, the third pump 78 and the fourth pump 79 draw concentrated hydrochloric acid and concentrated nitric acid solutions from the third storage tank 712 and the fourth storage tank 713, respectively, and inject them into the stirrer 75 at a ratio of 3:1. Then, approximately 2 ml of aqua regia is precisely extracted through the peristaltic pump assembly 71 and the corrosion valve assembly 72. This liquid is then dripped into the crucible 62 through the hose 73 and the drip head 74. During this process, gear 46 and rack 47 move periodically according to the flow rate to ensure that each crucible 62 receives the required solution. Then, the first mixing stage begins.

[0042] During operation, the ground-rail robot 1 places the carbonized and ashed crucible rack 6 onto the first heat insulation plate 34 in the cooling buffer area mechanism 3 and cools it for 10 minutes.

[0043] After the crucible rack 6 has been cooled for 10 minutes, the ground-rail robot 1 places the crucible rack 6 into the dripping and shaking area mechanism 4, and uses the peristaltic pump dripping mechanism 7 to perform precise dripping.

[0044] The mixing device employs a phased, sinusoidal reciprocating motion trajectory with different parameters. The first stage of mixing is carried out by using a low-frequency, medium-amplitude, short-duration, and slow-start-stop method on the crucible after adding sodium chloride and aqua regia.

[0045] After the first uniform shaking, the ground-rail robot 1 places the crucible rack 6 on the water bath heating area mechanism 5. Acid evaporation is performed for 20 minutes. After evaporation, the hot crucible rack 6 is transferred to the dripping and shaking area mechanism 4. The pump 77 draws 5% hydrochloric acid solution from the storage tank 710. Approximately 20 ml of liquid is precisely drawn using the peristaltic pump group 71 and valve group 72 and added to the crucible 62. During this process, the gear 46 and rack 47 move periodically according to the flow rate to ensure that each crucible 62 receives the required amount of solution. Then, the second shaking stage begins. This stage uses medium frequency, small amplitude, short duration, and high stability to match the mass transfer and dissolution of hot hydrochloric acid and solid residues, solving the problems of uneven mixing and incomplete dissolution that may occur with manual shaking, ensuring the accuracy of atomic absorption detection. Simultaneously, the ground-rail robot moves the crucible rack 6, which was placed on the buffer insulation plate 33, to the water bath heating area mechanism 5 for heating. At the same time, the ground-rail robot 1 places the newly carbonized and ashed crucible rack 6 onto the first heat insulation plate 34 for cooling.

[0046] Finally, after the second stage of shaking, the ground-rail robot 1 transfers the crucible rack 6 to the three-dimensional material storage.

[0047] One of the working methods or principles of this embodiment is as follows: S1. Robot 12 moves to the liquid addition and shaking station, grabs the crucible tray, and moves it to the buffer station.

[0048] S2, Robot 12 moves to the water bath station, grabs the crucible tray, and moves it to the liquid addition and shaking station.

[0049] S3, Robot 12 moves to the buffer station, grabs the crucible tray, and moves it to the water bath station.

[0050] S4. Robot 12 moves to the liquid addition and mixing station, grabs the crucible tray, and moves it to the storage station.

[0051] S5, Robot 12 moves to the cooling station, grabs the crucible tray, and moves it to the liquid addition and shaking station.

[0052] S6, Robot 12 begins the loop.

[0053] Optionally, the loading and unloading cycle time of robot 12 is 72s / pallet; the longest process cycle time is (1200+28)=1228s / pallet, or 61.4s / piece.

[0054] This embodiment achieves a comprehensive upgrade of the acid evaporation and volume determination process in gold wet processing from manual experience-driven to automated, digitalized, and standardized intelligent control through a systematic approach that uses precise quantification of the shaking process, intelligent integrated system for liquid addition, and parallel process transfer to optimize production rhythm.

[0055] In step S2, four pumps are used to extract saturated NaCl solution, 5% hydrochloric acid solution, pure hydrochloric acid solution, and pure nitric acid solution from the storage tank, respectively. Specifically, the third and fourth pumps (4) pump the solutions into a stirred reaction flask at a 3:1 ratio for reaction, after which the resulting aqua regia is extracted. A peristaltic pump assembly, valve assembly, and hoses are used to precisely add solutions to each crucible. Parameters such as liquid volume, flow rate, running time, and number of dispensing operations are simultaneously fed back during the addition process. Step S2 proposes a phased sinusoidal reciprocating motion trajectory with different parameters.

[0056] The first stage involves gently and thoroughly wetting and initially dissolving the ashing gold particles in the crucible with corrosive aqua regia, initiating the formation of chloroaurate, while strictly preventing splashing. A low-frequency, medium-amplitude, short-duration, and slow-start-stop process is employed to match the reaction between aqua regia and sodium chloride to produce sodium chloroaurate. This stage requires gentle mixing to prevent splashing, while ensuring the aqua regia fully wets the solid particles to avoid localized violent reactions that could lead to sample loss.

[0057] The second stage: The use of medium frequency, small amplitude, short time, and high stability to match the mass transfer and dissolution of hot hydrochloric acid and solid residues solves the problems of uneven mixing and incomplete dissolution that may be caused by manual shaking, thus ensuring the accuracy of atomic absorption detection.

[0058] Optionally, a pipeline-style multi-threaded execution strategy can be used to optimize the automated distillation process. While heating, the cooled new crucible rack is placed in the titration and mixing area. Precise dispensing and uniform mixing are achieved by titrating first and then mixing. After the titration is complete, the crucible rack is placed in a buffer heat-insulating plate. After the addition is finished, the crucible rack from the heating area is first moved to the titration and mixing area, and then the crucible rack from the buffer heat-insulating plate is placed in the water bath heating area for heating, thus achieving simultaneous heating and mixing.

[0059] Example 2: This embodiment provides a method for volume determination of a wet gold refining crucible that integrates liquid addition and shaking. The method uses a wet gold refining crucible volume determination device that integrates liquid addition and shaking as described in Embodiment 1. The device includes: the ground-rail robot 1 places the carbonized and ashed crucible rack 6 into the cooling buffer area mechanism 3. After cooling, the ground-rail robot 1 places the crucible rack 6 into the dripping and shaking area mechanism 4, and drips liquid using a peristaltic pump dripping mechanism 7. The dripping and shaking area mechanism 7 uses a staged shaking method for shaking.

[0060] The above description is merely a preferred embodiment of this practice and is not intended to limit the scope of this practice. Various modifications and variations can be made to this practice by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this practice should be included within the protection scope of this practice.

Claims

1. A wet gold refining crucible volume-regulating device integrating liquid addition and shaking, characterized in that, It includes a ground-rail robot and a frame housing arranged side by side. The frame housing is equipped with a cooling buffer area mechanism, a dripping and shaking area mechanism, a water bath heating area mechanism, and a peristaltic pump dripping mechanism. The droplet mixing area mechanism includes multiple second support frames mounted on the frame housing, a first support plate and a second support plate mounted on the second support frames and parallel to each other, two guide rails mounted on the first support plate and the second support plate respectively, and a second heat insulation plate mounted on the guide rails via a slider; the second heat insulation plate is connected to the slider, a rack is mounted on the second heat insulation plate, a servo motor is mounted on the first support plate, and a gear that meshes with the rack is mounted on the output shaft of the servo motor; The ground-rail robot places the carbonized and ashed crucible rack into the cooling buffer area mechanism. After cooling, the ground-rail robot places the crucible rack into the dripping and shaking area mechanism, and uses a peristaltic pump dripping mechanism to drip liquid. The dripping and shaking area mechanism uses a staged shaking method to shake the liquid.

2. The integrated liquid addition and shaking wet gold refining crucible volume-regulating device as described in claim 1, characterized in that, The ground-rail robot includes a ground rail, a robot mounted on the ground rail, and grippers mounted on the robot.

3. The integrated liquid addition and shaking wet gold refining crucible volume-regulating device as described in claim 1, characterized in that, The rack enclosure is configured as a box structure, and the rack enclosure includes an upper rack enclosure and a lower rack enclosure that are connected to each other. The lower rack enclosure includes multiple independent spaces.

4. The integrated liquid addition and shaking wet gold refining crucible volume-regulating device as described in claim 1, characterized in that, The cooling buffer area mechanism is located on one side of the rack housing platform. The cooling buffer area mechanism includes a first heat insulation plate disposed on the rack housing, a first support rod disposed on the rack housing 2 via a first support frame, and a buffer heat insulation plate disposed on the first support rod away from the first support frame.

5. The integrated liquid addition and shaking wet gold refining crucible volume-regulating device as described in claim 1, characterized in that, The drip mixing area mechanism includes multiple second support frames mounted on the frame housing, multiple second support frames mounted on the second support frames, a first support plate and a second support plate mounted on the second support frames and parallel to each other, two guide rails mounted on the first support plate and the second support plate respectively, a second heat insulation plate mounted on the guide rails via a slider, and a gantry frame mounted on the frame housing; a Y-shaped plate is provided at the lower part of one end of the second heat insulation plate near the first support plate, and a rack is provided on the Y-shaped plate.

6. The integrated liquid addition and shaking wet gold refining crucible volume-regulating device as described in claim 1, characterized in that, The peristaltic pump dripping mechanism includes a peristaltic pump assembly, a valve assembly, hoses, a stirrer, a first pump, a second pump, a third pump, a fourth pump, a first storage tank, a second storage tank, a third storage tank, and a fourth storage tank. The first pump, the second pump, the third pump, and the fourth pump are respectively placed in the left and right independent spaces of the lower frame housing. The first storage tank, the second storage tank, the third storage tank, and the fourth storage tank are respectively placed on the left and right sides of the frame housing. The stirrer is placed behind the cooling buffer area mechanism, the peristaltic pump assembly is placed behind the water bath heating area mechanism, the valve assembly is connected to the peristaltic pump assembly, multiple hoses are respectively connected to the valve assembly, and the dripping head is connected to the hose. The first pump draws liquid from the first storage tank containing saturated sodium chloride solution, and through the peristaltic pump group and the corrosion valve group, a preset amount of liquid is drawn; the liquid is then dripped into the crucible through a hose and a drip head. Meanwhile, the third and fourth pumps extract concentrated hydrochloric acid and concentrated nitric acid solutions from the third and fourth storage tanks, respectively, and pump them into the stirrer according to a preset ratio; then, a preset amount of aqua regia is extracted through the peristaltic pump group and corrosion valve group and dripped into the crucible through the hose and drip head. The gears and racks move at regular intervals to ensure that each crucible receives the required amount of solution.

7. A method for volume determination of a wet alchemical crucible integrating liquid addition and shaking, characterized in that, The wet refining crucible volume-fixing device integrating liquid addition and shaking as described in any one of claims 1-6 includes: the ground-rail robot placing the carbonized and ashed crucible rack into the cooling buffer area mechanism; after cooling, the ground-rail robot placing the crucible rack into the dripping and shaking area mechanism, and dripping liquid using a peristaltic pump dripping mechanism; the dripping and shaking area mechanism uses a staged shaking method for shaking.

8. The wet alchemy crucible volume-fixing method integrating liquid addition and shaking as described in claim 7, characterized in that, The ground-rail robot places the carbonized and ashed crucible rack onto the first heat insulation plate in the cooling buffer area mechanism. After cooling for 10 minutes, the ground-rail robot places the crucible rack into the dripping and shaking area mechanism and uses the peristaltic pump dripping mechanism 7 to drip the liquid. The crucible after dripping in sodium chloride and aqua regia is shaken in the first stage.

9. The wet alchemy crucible volume-fixing method integrating liquid addition and shaking as described in claim 8, characterized in that, After the first stage of shaking, the ground-rail robot places the crucible rack on the water bath heating area mechanism for acid evaporation. After the acid evaporation is completed, the hot crucible rack is transferred to the dripping and shaking area mechanism. The pump will draw hydrochloric acid solution from the storage tank and add the liquid to the crucible through the peristaltic pump group and valve group. The gears and racks move at intervals to ensure that each crucible is dripped with solution. Then, the second mixing stage begins; the ground-rail robot moves the crucible rack, which was placed on the buffer insulation plate, to the water bath heating area for heating.

10. The wet alchemy crucible volume-fixing method integrating liquid addition and shaking as described in claim 9, characterized in that, The mixing is achieved by using a servo motor to drive a rack and pinion mechanism, which in turn moves a slider carrying the crucible in a linear reciprocating motion on a slide rail. The control relationship is as follows: Rack displacement formula: ； ； in, This represents the linear displacement of the rack; Let be the pitch circle radius of the gear; The angular displacement of the servo motor is given; the sinusoidal reciprocating motion of the rack is: ； in, The amplitude; For frequency, For time; The angular displacement command executed by the servo motor is: ； The corresponding motor speed is: ； Total shaking time T This determines the duration and frequency of motion execution. f Together they determine the total number of round trips. N : 。

Images