Catalyst adding device for rare metal recovery reaction in cyanide waste liquid

Abstract

The application relates to the technical field of waste liquid recovery, and discloses a catalyst adding device for rare metal recovery reaction in cyanide waste liquid, which comprises a waste liquid treatment device, the waste liquid treatment device comprises a treatment tank and a tank cover, a catalyst adding port is further arranged on the tank cover, catalyst can be added into the treatment tank through the catalyst adding port, and rare metals in the waste liquid are recovered and treated; and a catalyst adding unit is arranged for controlling the catalyst adding amount in the catalyst adding port. When the first plugging plate moves to extrude the second piston rod, gas is conducted through the hose to push the first piston rod, so that the spline shaft drives the movable shaft and the dispersing disc to move. At this time, the dispersing disc is separated from the discharge port, the discharge port is opened, the rotating dispersing disc cooperates with the shunt piece to uniformly spread the quantitatively output catalyst, so that the local concentration unevenness of the catalyst is avoided, and the rare metal recovery efficiency and purity are greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste liquid recovery, more particularly, it relates to a catalyst adding device for rare metal recovery reaction in cyanide waste liquid. BACKGROUND

[0002] Wastewater treatment is a commonly used technical means in modern construction operation, through the treatment of harmful substances in wastewater, the discharge of wastewater will not cause environmental pollution and uncontrolled escape of harmful substances, and cyanide waste liquid is a highly hazardous industrial wastewater. Cyanide waste liquid mainly comes from gold mining, electroplating, metal surface treatment and other industries. In these production processes, cyanide is widely used in ore leaching, metal complexation and other processes, thereby generating a large amount of waste liquid containing cyanide. The cyanide waste liquid contains gold, silver, platinum, palladium and other rare metals, which have high economic value and are widely used in electronic, aerospace, new energy and other high-tech fields.

[0003] Currently, the recovery of rare metals in cyanide waste liquid mainly adopts methods such as chemical precipitation, ion exchange, adsorption and membrane separation, but these methods have problems such as low recovery rate, high cost, serious secondary pollution and the like. In order to improve the recovery efficiency of rare metals, introducing a catalyst into the recovery reaction becomes an effective solution.

[0004] In the process of recovering rare metals in cyanide waste liquid, if the catalyst is not added uniformly, the catalyst concentration in some areas is too high, which will cause waste of catalyst, increase cost, and may also cause side reactions, affecting the purity of rare metal recovery; and the catalyst concentration in some areas is too low, which will slow down the reaction rate and reduce the recovery efficiency of rare metals.

[0005] Specifically, the catalyst is mostly granular, and the powder catalyst has large specific surface area and high surface energy. The particles are easily agglomerated into large particle groups due to electrostatic attraction and the like, and it is difficult to uniformly disperse in a short time after entering the treatment tank, resulting in local concentration difference. In addition, different catalysts have different flowabilities, and some catalysts have poor flowability due to irregular particle shape and uneven particle size distribution, and are easily accumulated in the pipeline and discharge port during transportation and addition, causing poor discharge or unstable amount, affecting uniformity of addition. SUMMARY

[0006] The present application provides a catalyst adding device for rare metal recovery reaction in cyanide waste liquid, which solves the technical problem that in the related art, if the catalyst is not added uniformly in the process of recovering rare metals in cyanide waste liquid, the catalyst concentration in some areas is too high, which will cause waste of catalyst, increase cost, and may also cause side reactions, affecting the purity of rare metal recovery; and the catalyst concentration in some areas is too low, which will slow down the reaction rate and reduce the recovery efficiency of rare metals.

[0007] The application discloses a catalyst adding device for rare metal recovery reaction in cyanide waste liquid, which comprises a waste liquid treatment device, the waste liquid treatment device comprises a treatment tank and a tank cover, a catalyst adding port is further installed on the tank cover, catalyst can be added into the treatment tank through the catalyst adding port, and rare metals in the waste liquid are recovered and treated; a catalyst adding unit is arranged for controlling the catalyst adding amount in the catalyst adding port; the catalyst adding unit comprises a discharge port installed on the catalyst adding port, a feeding hopper is installed on the discharge port, a feeding box is installed on the feeding hopper, a feeding hopper is installed on the feeding box, a gasket is installed in the feeding box, the gasket is fixedly connected with the feeding hopper, two groups of first blocking plates are arranged in the feeding box, and a containing space for containing catalyst raw materials is formed between the two groups of first blocking plates.

[0008] As a further optimization scheme of the application, a second motor is installed on the feeding box, a threaded rod is installed on the output shaft of the second motor, a threaded sleeve is threadedly connected with the threaded rod, and the two ends of the threaded sleeve are connected with the first blocking plates.

[0009] As a further optimization scheme of the application, a dispersion unit is arranged on the discharge port, so that the catalyst is dispersed and uniformly dispersed in the treatment tank.

[0010] As a further optimization scheme of the application, the dispersion unit comprises a movable shaft arranged in the discharge port, a dispersion disc is installed on one end of the movable shaft close to the treatment tank, the dispersion disc is arranged in a conical structure, a conical groove matched with the dispersion disc is formed at the open position of the discharge port, and the dispersion disc is used for closing the open position of the discharge port.

[0011] As a further optimization scheme of the application, a sliding sleeve is slidably connected with the outer portion of the movable shaft, the sliding sleeve is installed on the discharge port, a first connecting frame is further installed on the discharge port, a shaft sleeve is rotatably connected with the inner portion of the first connecting frame through a bearing, a spline shaft is slidably connected with the inner portion of the shaft sleeve, the spline shaft is fixedly connected with the movable shaft, a third motor is installed on the first connecting frame, a first gear is installed at the output shaft of the third motor, a second gear is meshingly connected with the first gear, and the second gear is installed on the shaft sleeve.

[0012] As a further optimization of the present invention, a second connecting frame is also installed on the first connecting frame, and a first connecting cylinder is installed on the second connecting frame. A first piston rod is slidably connected inside the first connecting cylinder, and a connecting block is installed at the end of the first piston rod away from the first connecting cylinder. The connecting block is rotatably connected to the spline shaft through a bearing. A first spring is provided on the first piston rod. A second connecting cylinder is installed on the feed box, and a second piston rod is slidably connected inside the second connecting cylinder. The end of the second piston rod away from the second connecting cylinder extends through the feed box into the interior of the feed box. A second spring is provided on the second piston rod. A hose is installed between the first connecting cylinder and the second connecting cylinder to connect the interiors of the first connecting cylinder and the second connecting cylinder through the hose.

[0013] As a further optimization of the present invention, the dispersing disk has a number of flow dividers evenly distributed in a ring, and each flow divider has a slot that matches the opening of the discharge port.

[0014] As a further optimization of the present invention, the feed box is provided with an opening adapted to the feeding hopper, the interiors of the feed box and the feeding hopper are connected through the opening, and a sealing unit is provided inside the opening to isolate the catalyst inside the feeding hopper.

[0015] As a further optimization of the present invention, the sealing unit includes a second sealing plate slidably connected to the opening, and a guide frame is installed on the second sealing plate. A guide rod is slidably connected inside the guide frame, and the end of the guide rod away from the guide frame is fixedly connected to the outer wall of the feed box. A third spring is provided on the guide rod.

[0016] As a further optimization of the present invention, a blocking block is installed on the second sealing plate, and a movable groove adapted to the second sealing plate is provided in the opening, and a notch for accommodating the blocking block is provided in the movable groove.

[0017] The beneficial effects of this invention are as follows: This invention quantitatively delivers catalyst to the feeding hopper through a catalyst addition unit. When the first sealing plate moves and squeezes the second piston rod, gas is conducted through a hose, pushing the first piston rod and causing the splined shaft to drive the movable shaft and the dispersion disc. At this time, the dispersion disc disengages from the discharge port, opening the discharge port. The rotating dispersion disc, in conjunction with the flow divider, evenly distributes the quantitatively output catalyst, thereby avoiding uneven local catalyst concentration. This ensures the concentration required for the reaction, prevents waste, and greatly improves the recovery efficiency and purity of rare metals. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0019] Figure 2 is a schematic perspective view of the structure of the present application Figure 2 ;

[0020] Figure 3 is a schematic sectional view of the structure of the present application;

[0021] Figure 4 is a schematic perspective view of the structure of the present application

[0022] Figure 5 is a schematic perspective view of the structure of the present application

[0023] Figure 6 is a schematic perspective view of the structure of the present application

[0024] Figure 7 is a schematic perspective view of the structure of the present application

[0025] Figure 8 is a schematic perspective view of the structure of the present application

[0026] Figure 9 is a schematic sectional view of the structure of the present application Figure 5

[0027] is a schematic perspective view of the structure of the present application Figure 10 Figure 9 is a schematic perspective view of the structure of the present application

[0028] Figure 11 Figure 9 is a schematic perspective view of the structure of the present application

[0029] ​​In the figure: 100, waste liquid treatment device; 101, base; 102, treatment tank; 103, tank cover; 104, first motor; 105, connecting shaft; 106, blade; 107, catalyst adding port; 108, first connecting pipe; 109, lifting pump; 110, second connecting pipe; 111, third connecting pipe; 112, fourth connecting pipe; 200, catalyst adding unit; 201, discharge port; 202, feeding hopper; 203, feeding box; 204, feeding hopper; 205, backing plate; 206, second motor; 207, threaded rod; 208, threaded sleeve; 209, first blocking plate; 300, dispersion unit; 301, movable shaft; 302, dispersion disc; 303, sliding sleeve; 304, first connecting frame; 305, shaft sleeve; 306, spline shaft; 307, third motor; 308, first gear; 309, second gear; 310, second connecting frame; 311, first connecting barrel; 312, first piston rod; 313, connecting block; 314, first spring; 315, first exhaust port; 316, second connecting barrel; 317, second piston rod; 318, second spring; 319, second exhaust port; 320, hose; 321, flow divider; 400, sealing unit; 401, second blocking plate; 402, guide rod; 403, third spring; 404, blocking block; 405, limiting block; 406, limiting groove. DETAILED DESCRIPTION

[0030] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that discussions of these implementations are merely provided to enable those skilled in the art to better understand so as to be able to implement the subject matter described herein, and variations of elements discussed can be made by one skilled in the art, without departing from the scope of the present specification. Various examples can omit, substitute, or add various procedures or components as appropriate, and the embodiments described should not be taken as limiting. Features described in relation to one example can also be applicable to other examples.

[0031] According to Figure 1 , Figure 2 , Figure 3 and Figure 4As shown in the figure, a catalyst adding device for rare metal recovery reaction in cyanide waste liquid, comprising a waste liquid treatment device 100, the waste liquid treatment device 100 comprises a base 101, and the base 101 is provided with a treatment tank 102, and the treatment tank 102 is detachably provided with a tank cover 103, and the tank cover 103 is provided with a first motor 104, and the inside of the treatment tank 102 is provided with a connecting shaft 105, and the end of the connecting shaft 105 away from the tank cover 103 is provided with a plurality of blades 106, and the end of the connecting shaft 105 close to the tank cover 103 is fixedly connected with the output shaft of the first motor 104, and the tank cover 103 is also provided with a catalyst adding port 107, so as to add catalyst in the inside of the treatment tank 102 through the catalyst adding port 107, so as to recover the rare metal in the cyanide waste liquid.

[0032] Specifically, the catalyst adding device further comprises a first connecting pipe 108, a lifting pump 109, a second connecting pipe 110, a third connecting pipe 111 and a fourth connecting pipe 112, the first connecting pipe 108 is installed on the treatment tank 102, the lifting pump 109 is installed on the base 101, the lifting pump 109 is provided with an input end and an output end, the input end of the lifting pump 109 is provided with the second connecting pipe 110, and the output end of the lifting pump 109 is provided with the third connecting pipe 111, the end of the second connecting pipe 110 away from the lifting pump 109 is communicated with the treatment tank 102, and the fourth connecting pipe 112 is installed at the bottom of the treatment tank 102.

[0033] In this embodiment, the first connecting pipe 108 can be connected with the cyanide waste liquid source outside, so as to supply liquid to the inside of the treatment tank 102, facilitating the continuous treatment of the cyanide waste liquid by the waste liquid treatment device 100; the lifting pump 109, the second connecting pipe 110 and the third connecting pipe 111 can extract the flocculation or precipitation after the reaction of the catalyst in the inside of the treatment tank 102, so as to facilitate the recovery of the rare metal in the cyanide waste liquid; the fourth connecting pipe 112 can be connected with the sewage pipeline outside, so as to facilitate the cleaning of the inside of the treatment tank 102.

[0034] It should be understood that when the first motor 104 is controlled to rotate, the connecting shaft 105 rotates synchronously to drive the plurality of blades 106 to mix the cyanide waste liquid and the catalyst in the inside of the treatment tank 102, so as to facilitate the recovery of the rare metal in the cyanide waste liquid and improve the waste liquid recovery efficiency.

[0035] According to Figure 5 and Figure 6 As shown in the figure, the catalyst adding port 107 is provided with a catalyst adding unit 200, so as to control the amount of catalyst added in the inside of the catalyst adding port 107, so as to reduce the cost of catalyst consumption and facilitate the recovery of the rare metal in the cyanide waste liquid.

[0036] According toFigure 6 As shown, the catalyst adding unit 200 comprises a discharge port 201 mounted on the catalyst adding port 107, and a feeding hopper 202 is mounted on the discharge port 201, a feeding box 203 is mounted on the feeding hopper 202, and a feeding hopper 204 is mounted on the feeding box 203, and an opening is formed in the feeding box 203 and matched with the feeding hopper 204, the inside of the feeding box 203 and the feeding hopper 204 are communicated through the opening, a gasket 205 is mounted in the inside of the feeding box 203, and the gasket 205 is fixedly connected with the feeding hopper 202, a second motor 206 is mounted on the feeding box 203, and a threaded rod 207 is mounted on the output shaft of the second motor 206, the threaded rod 207 is rotatably connected to the inner wall of the feeding box 203 through a bearing, a threaded sleeve 208 is threadedly connected to the threaded rod 207, and first blocking plates 209 are arranged at both ends of the threaded sleeve 208, and a containing space for containing catalyst raw materials is formed between the two groups of first blocking plates 209.

[0037] Further, when the second motor 206 is controlled to rotate, the threaded rod 207 rotates synchronously, and the first blocking plates 209 are driven to move in the inside of the feeding box 203 through the threaded connection of the threaded rod 207 and the threaded sleeve 208, so as to form a movable containing space and drive the catalyst in the containing space to move synchronously, so that the catalyst moves towards the feeding hopper 202, a certain amount of catalyst is transported into the feeding hopper 202, the catalyst is transported into the discharge port 201 through the feeding hopper 202, so as to control the adding amount of the catalyst and add the catalyst, and this quantitative adding method avoids the excessive use of the catalyst, reduces the cost of the catalyst, and ensures the stability of the catalyst concentration in the reaction process, which is beneficial to improve the recovery effect of the rare metal.

[0038] According to Figure 5 As shown, the discharge port 201 is provided with a dispersion unit 300 for dispersing the catalyst and uniformly dispersing it in the inside of the treatment tank 102, so as to facilitate the recovery of the rare metal in the cyanide waste liquid.

[0039] According to Figure 7 and Figure 8 As shown, the dispersion unit 300 comprises a movable shaft 301 arranged in the inside of the discharge port 201, and a dispersion disc 302 is mounted on the end of the movable shaft 301 close to the treatment tank 102, the dispersion disc 302 is arranged in a conical structure, a conical groove matched with the dispersion disc 302 is formed at the open position of the discharge port 201, and the dispersion disc 302 is used to close the open position of the discharge port 201.

[0040] Specifically, the outer part of the movable shaft 301 is slidably connected with a sliding sleeve 303, the sliding sleeve 303 is installed on the discharge port 201, a first connecting frame 304 is also installed on the discharge port 201, the inner part of the first connecting frame 304 is rotatably connected with a shaft sleeve 305 through a bearing, the inner part of the shaft sleeve 305 is slidably connected with a spline shaft 306, the spline shaft 306 is fixedly connected with the movable shaft 301, a third motor 307 is installed on the first connecting frame 304, a first gear 308 is installed at the output shaft of the third motor 307, the first gear 308 is meshingly connected with a second gear 309, and the second gear 309 is installed on the shaft sleeve 305.

[0041] In this embodiment, when the third motor 307 is controlled to rotate, the first gear 308 is meshingly connected with the second gear 309 to drive the shaft sleeve 305 to rotate synchronously, under the action of the sliding limiting between the shaft sleeve 305 and the spline shaft 306, the movable shaft 301 rotates synchronously, when the movable shaft 301 rotates, the dispersing disc 302 rotates synchronously, so as to facilitate the stirring of the catalyst in the discharge port 201, and the catalyst is uniformly distributed.

[0042] Further, a second connecting frame 310 is also installed on the first connecting frame 304, a first connecting cylinder 311 is installed on the second connecting frame 310, the inner part of the first connecting cylinder 311 is slidably connected with a first piston rod 312, a connecting block 313 is installed at the end of the first piston rod 312 away from the first connecting cylinder 311, the connecting block 313 is rotatably connected with the spline shaft 306 through a bearing, the first piston rod 312 is provided with a first spring 314, one end of the first spring 314 is fixedly connected with the first connecting cylinder 311, the other end of the first spring 314 is fixedly connected with the connecting block 313, and the inner part of the first connecting cylinder 311 is provided with a first exhaust port 315.

[0043] In addition, a second connecting cylinder 316 is installed on the feeding box 203, the inner part of the second connecting cylinder 316 is slidably connected with a second piston rod 317, the end of the second piston rod 317 away from the second connecting cylinder 316 extends to the inside of the feeding box 203 through the feeding box 203, the second piston rod 317 is provided with a second spring 318, one end of the second spring 318 is fixedly connected with the inner wall of the feeding box 203, the other end of the second spring 318 is fixedly connected with the second piston rod 317, and the inner part of the second connecting cylinder 316 is provided with a second exhaust port 319.

[0044] The same is that a hose 320 is installed between the first connecting cylinder 311 and the second connecting cylinder 316, the inner parts of the first connecting cylinder 311 and the second connecting cylinder 316 can be connected through the hose 320.

[0045] It should be noted that, according to Figure 9 andFigure 10 As shown, when the first blocking plate 209 moves towards the position of the second piston rod 317 and extrudes the second piston rod 317, the first blocking plate 209 pushes the second piston rod 317 to move into the second connecting barrel 316, at this time the second spring 318 is elastically deformed, when the second piston rod 317 moves in the second connecting barrel 316, the gas in the second connecting barrel 316 is transported to the inside of the first connecting barrel 311 through the hose 320, thereby driving the first piston rod 312 to move and synchronously moving the connecting block 313, so that the first spring 314 is elastically deformed, the spline shaft 306 moves up and down in the shaft sleeve 305, thereby separating the discharge port 201 from the dispersion disc 302, so that the opening of the discharge port 201 is completely exposed, and the catalyst is uniformly spread through the rotation of the dispersion disc 302.

[0046] It should be noted that the dispersion disc 302 is uniformly distributed with a plurality of shunt pieces 321 in a ring shape, and each shunt piece 321 is provided with a notch matched with the opening of the discharge port 201. Through the arrangement of the shunt piece 321, the rotating dispersion disc 302 can stir the catalyst in the discharge port 201, break the agglomeration of the catalyst, and preliminarily disperse the catalyst before entering the treatment tank 102, which is beneficial to the uniform distribution of the catalyst in the treatment tank 102, eliminates the caking and clumping, and improves the uniformity of catalyst addition.

[0047] According to Figure 5 and Figure 6 , the opening is provided with a closing unit 400, and the closing unit 400 is used for isolating the catalyst in the feeding hopper 204 from the area outside the containing space.

[0048] According to Figure 11 , the closing unit 400 includes a second blocking plate 401 slidably connected to the opening, and a guide frame is installed on the second blocking plate 401, a guide rod 402 is slidably connected in the guide frame, one end of the guide rod 402 away from the guide frame is fixedly connected with the outer wall of the feeding box 203, a third spring 403 is arranged on the guide rod 402, one end of the third spring 403 is fixedly connected with the guide frame, and the other end of the third spring 403 is fixedly connected with the guide rod 402.

[0049] Specifically, the second blocking plate 401 is provided with a blocking block 404, the opening is provided with a movable groove matched with the second blocking plate 401, and the movable groove is provided with a gap for accommodating the blocking block 404, and the initial state of the first blocking plate 209 is shown in Figure 11 , when the first blocking plate 209 is in the initial state, the blocking block 404 is limited.

[0050] Further, the second blocking plate 401 is provided with a limiting block 405 at one end away from the guide frame, and a limiting groove 406 is formed in the opening away from one side of the movable slot, when the first blocking plate 209 is in the moving state, the limiting of the blocking block 404 is released, at this time, the limiting block 405 moves towards the position of the limiting groove 406, so that the limiting block 405 and the limiting groove 406 are clamped and connected, the opening is closed, thereby closing the feeding box 203 and the feeding hopper 204; when the first blocking plate 209 is reset, the second blocking plate 401 is reset in the movable slot through the clamping connection with the blocking block 404, and the gap is clamped and connected with the blocking block 404 again.

[0051] The above describes the embodiments of the present embodiment, but the present embodiment is not limited to the above-described specific embodiment, and the above-described specific embodiment is only illustrative but not restrictive, and those skilled in the art can make many forms under the inspiration of the present embodiment, which all belong to the protection of the present embodiment.

Claims

1. A catalyst addition device for rare metal recovery reaction in cyanide waste liquid, characterized in that, The application relates to a waste liquid treatment device. The waste liquid treatment device comprises a treatment tank and a tank cover, and a catalyst adding port is further arranged on the tank cover to add catalyst into the treatment tank for recycling rare metals in waste liquid. A catalyst adding unit is arranged on the catalyst adding port to control the amount of catalyst added. The catalyst adding unit comprises a discharge port arranged on the catalyst adding port, a feeding hopper arranged on the discharge port, a feeding box arranged on the feeding hopper, a feeding hopper arranged on the feeding box, a backing plate arranged in the feeding box, and two groups of first blocking plates arranged in the feeding box. A dispersion unit is arranged on the discharge port to uniformly disperse the catalyst in the treatment tank. The dispersion unit comprises a movable shaft arranged in the discharge port, and a dispersion disc arranged on the end of the movable shaft close to the treatment tank. A first connecting frame is further arranged on the discharge port, a shaft sleeve is rotatably connected to the first connecting frame through a bearing, a spline shaft is slidably connected to the shaft sleeve, and the spline shaft is fixedly connected to the movable shaft. A second connecting frame is further arranged on the first connecting frame, a first connecting cylinder is arranged on the second connecting frame, a first piston rod is slidably connected to the first connecting cylinder. A second connecting cylinder is arranged on the feeding box, a second piston rod is slidably connected to the second connecting cylinder, a second spring is arranged on the second piston rod, a hose is arranged between the first connecting cylinder and the second connecting cylinder to connect the interiors of the first connecting cylinder and the second connecting cylinder. A first exhaust port is arranged in the first connecting cylinder, and a second exhaust port is arranged in the second connecting cylinder. When the first blocking plate moves towards the position of the second piston rod and extrudes the second piston rod, the first blocking plate drives the second piston rod to move into the second connecting cylinder. When the second piston rod moves in the second connecting cylinder, the gas in the second connecting cylinder is transported into the first connecting cylinder through the hose to drive the first piston rod to move and synchronously drive the connecting block to move. The spline shaft moves up and down in the shaft sleeve to separate the discharge port from the dispersion disc, so that the opening of the discharge port is completely exposed, and the catalyst is uniformly spread through the rotation of the dispersion disc. An opening is arranged in the feeding box and matched with the feeding hopper, the interiors of the feeding box and the feeding hopper are connected through the opening, and a blocking unit is arranged in the opening to isolate the catalyst in the feeding hopper. The blocking unit comprises a second blocking plate slidably connected to the opening, a guide frame is arranged on the second blocking plate, a guide rod is slidably connected to the guide frame, the end of the guide rod away from the guide frame is fixedly connected to the outer wall of the feeding box, and a third spring is arranged on the guide rod. The second blocking plate is provided with a blocking block, the opening is provided with a movable slot matched with the second blocking plate, and the movable slot is provided with a notch for accommodating the blocking block; The second blocking plate is provided with a limiting block away from one end of the guide frame, and the opening is provided with a limiting slot away from one side of the movable slot; When the first blocking plate is in the moving state, the limiting of the blocking block is released, and the limiting block moves towards the position of the limiting slot, so that the limiting block and the limiting slot are clamped and connected, the opening is closed, and the feeding box and the feeding hopper are closed; when the first blocking plate is reset, the second blocking plate is reset in the movable slot through the clamping connection with the blocking block, and the notch is clamped and connected with the blocking block again.

2. The catalyst addition device for the recovery of rare metals from cyanide waste solution according to claim 1, characterized in that, The feeding box is provided with a second motor, and a threaded rod is arranged on the output shaft of the second motor, and a threaded sleeve is threadedly connected to the threaded rod, and the two ends of the threaded sleeve are connected with the first blocking plate.

3. The catalyst addition device for the recovery of rare metals from cyanide waste solution according to claim 1, characterized in that, The dispersion disc is arranged in a conical structure, the opening of the discharge port is provided with a conical slot matched with the dispersion disc, and the dispersion disc is used for closing the opening of the discharge port.

4. The catalyst addition device for the recovery of rare metals from cyanide waste solution according to claim 1, characterized in that, The outer part of the movable shaft is slidably connected with a sliding sleeve, and the sliding sleeve is installed on the discharge port, a third motor is installed on the first connecting frame, a first gear is installed on the output shaft of the third motor, a second gear is engagedly connected to the first gear, and the second gear is installed on the shaft sleeve.

5. The catalyst addition device for a rare metal recovery reaction from cyanide waste liquid according to claim 4, characterized by The first piston rod is provided with a connecting block away from one end of the first connecting cylinder, the connecting block and the spline shaft are rotatably connected through a bearing, the first piston rod is provided with a first spring, and the second piston rod extends to the inside of the feeding box through the feeding box away from one end of the second connecting cylinder.

6. The catalyst addition device for a rare metal recovery reaction from cyanide waste liquid according to claim 1, characterized by The dispersion disc is uniformly distributed with a plurality of shunt pieces in a ring shape, and each shunt piece is provided with a slot matched with the opening of the discharge port.

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