Separation treatment device for recovering rhenium from sulfur-arsenic slag

Abstract

The invention discloses a separation treatment device for recovering rhenium from sulfur-arsenic slag, which relates to the technical field of scattered metal recovery and comprises a heating furnace and a distributing funnel mounted on one side of the heating furnace. A feeding mechanism capable of performing spiral reciprocating motion and uniformly distributing and controlling an extracting agent, a sucking disc which is arranged in the distributing funnel and can float up and down along with the ascending and descending of a liquid level on the distributing funnel, and a negative pressure mechanism which is connected with the sucking disc and is used for extracting liquid in the distributing funnel are mounted in the distributing funnel; the material injection pipeline does spiral reciprocating motion along the spiral track, it is ensured that an extraction agent is evenly dispersed in all areas in the material distribution funnel, the extraction agent and leaching liquid are fully and efficiently mixed, local extraction agent is locally accumulated, and the extraction purity and efficiency are improved; and the negative pressure mechanism is matched to extract liquids with different masses by utilizing negative pressure difference, and the upper-layer liquid and the lower-layer liquid can be effectively prevented from being mixed and discharged.

Description

Technical Field

[0001] The invention relates to the technical field of rare metal recovery, in particular to a separation and processing device for recovering rhenium from sulfur-arsenic slag. Background Art

[0002] Rhenium is a rare metal with a high melting point, high strength and good oxidation resistance. It can maintain stable mechanical properties under extremely high temperature conditions. Currently, rhenium is widely used, mainly in the manufacture of high-temperature components of aircraft engines, and can also be used to manufacture highly sensitive electron tubes and semiconductor devices.

[0003] Rhenium rarely exists in the form of an independent mineral in nature, but is often associated with other minerals. Sulfur-arsenic slag is a waste slag produced in the smelting process of some non-ferrous metals, the main components of which are sulfur, arsenic and some metal elements such as rhenium. At present, the separation and extraction scheme of rhenium in sulphur-arsenic slag generally involves pre-treating the sulphur-arsenic slag by acid leaching or alkaline leaching to allow rhenium to enter the solution in the form of ions. The leachate is then mixed with a selected extractant at a certain ratio to promote a complex reaction between the target element and the extractant and transfer the target element to the organic phase. After the extraction is completed, a rhenium-containing organic phase is obtained, and the rhenium is extracted. Finally, the rhenium-loaded organic phase is stripped with a suitable stripping agent, such as sodium hydroxide solution, to obtain a rhenium-containing aqueous solution.

[0004] In the actual processing process, the core of separation and extraction lies in the addition of the extractant. This process will directly affect the purity of the rhenium finally extracted. If the extractant is added too quickly, it may cause it to react too violently with the sulfur-arsenic slag and the local reaction rate will be out of control. This will not only affect the selectivity of the extraction, but may also cause some impurities that are not expected to be extracted to be quickly extracted, thereby reducing the purity of the rhenium. If the addition rate is too slow, it will take a long time and the extraction efficiency will be reduced.

[0005] In addition, the current separation and extraction method mainly relies on static stratification technology to separate the organic phase and the aqueous phase. During the operation, the material is discharged in batches by opening the bottom valve. However, during the liquid separation stage, if the operator is inexperienced and finds it difficult to accurately control the timing and speed of liquid separation, this may result in the piston being closed before the lower layer of liquid is completely discharged, or the upper layer of liquid being accidentally mixed into the lower layer, ultimately affecting the extraction efficiency and purity of rhenium.

[0006] In response to the above problems, it is urgent to carry out innovative design based on the original separation and extraction device. Summary of the Invention

[0007] The technical solution of the present invention addresses the technical problem that the existing technical solutions are too simple, and provides a solution that is significantly different from the existing technology. Specifically, the purpose of the present invention is to provide a separation and processing device for recovering rhenium from sulfur-arsenic slag, so as to solve the problem proposed in the above background technology that the rate of addition of the extractant is difficult to control during the separation and extraction process, and the timing is difficult to control during the liquid separation process, which affects the final extraction purity and efficiency of rhenium.

[0008] To achieve the above-mentioned object, the present invention provides the following technical solution: a separation and processing device for recovering rhenium from sulfur-arsenic slag, comprising a heating furnace and a distribution funnel mounted on one side of the heating furnace, wherein the distribution funnel is internally equipped with a feeding mechanism capable of performing spiral reciprocating motion and uniformly distributing an extractant, a suction cup disposed inside the distribution funnel capable of floating up and down following the rise and fall of the liquid level in the distribution funnel, and a negative pressure mechanism connected to the suction cup for extracting liquid from the distribution funnel; A reagent bottle is installed on the top of the dividing funnel corresponding to the position of the feeding mechanism, and a liquid storage bottle is installed on one side of the dividing funnel corresponding to the position of the negative pressure mechanism.

[0009] Preferably, the feeding mechanism comprises a spiral track welded to the inner wall of the distribution funnel and a material injection pipe that performs a spiral reciprocating motion on the spiral track, a diverter pipe is installed at one end of the material injection pipe, and a hose is threadedly connected to the other end of the material injection pipe; A valve for controlling the flow of the extractant is installed at one end of the hose away from the injection pipeline.

[0010] Preferably, an annular protrusion is provided on the outside of the injection pipe, and the injection pipe is connected to the spiral track in a sliding manner through the annular protrusion.

[0011] Preferably, the spiral track is a three-dimensional conical track, and the inner diameter of the spiral track gradually decreases from top to bottom, and a rotating rod for driving the injection pipe to rotate passes through the middle of the spiral track, and the output shaft of the servo motor is installed at the bottom of the rotating rod, and the servo motor is arranged outside the distribution funnel.

[0012] Preferably, a shift rod is fixedly connected to the top of the rotating rod, a through groove is provided on the surface of the shift rod, and the injection pipe slides back and forth linearly along the inner wall of the through groove.

[0013] Preferably, the negative pressure mechanism comprises a tapered pipe installed directly above the liquid storage bottle, a fan installed at the top of the tapered pipe, and a negative pressure nozzle sliding along the side curved surface of the tapered pipe; One side of the negative pressure suction nozzle is threadedly connected to a screw rod, and the negative pressure suction nozzle is driven to slide along the side curved surface of the tapered pipe by rotating the screw rod, thereby achieving fine adjustment of the negative pressure suction force of the negative pressure suction nozzle.

[0014] Preferably, the side curved surface of the tapered pipe is provided with a strip opening, the negative pressure suction nozzle slides along the strip opening, and a sealing gasket is fixedly connected to the outside of the negative pressure suction nozzle and is slidably connected along the inner wall of the tapered pipe.

[0015] Preferably, a negative pressure tube is wrapped around the surface of the rotating rod, one end of the negative pressure tube is bonded to the suction cup, and the other end of the negative pressure tube is threadedly connected to the negative pressure suction nozzle. A circular fixing block is provided at the end of the lever close to the rotating rod, and the negative pressure tube passes through the circular fixing block and is connected to the suction cup.

[0016] Preferably, a circular cavity is provided in the middle of the suction cup, a sliding connection is adopted between the suction cup and the shifting rod, and a liquid inlet is provided on the outside of the suction cup.

[0017] Preferably, a furnace cover is installed on the top of the heating furnace, a feed port and an exhaust gas pipe are provided on the surface of the furnace cover, and a discharge pipe is provided at the bottom of the heating furnace.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The movement trajectory of the injection pipe and the diversion pipe is controlled by the spiral track of the feeding mechanism. The track is welded to the inner wall of the distribution funnel, providing a spiral reciprocating movement path for the injection pipe. The injection pipe moves from top to bottom along the spiral track and then moves in the opposite direction to reset. During this process, the extractant is evenly injected into the distribution funnel through the diversion pipe, ensuring that the extractant is evenly dispersed from the outside to the inside and from top to bottom in the distribution funnel at different heights and areas, so as to ensure sufficient and efficient mixing of the extractant and the leachate, thereby improving the purity of the extraction.

[0019] In addition, the dynamic rotational displacement of the injection pipe allows the internal solution to be fully mixed. Compared with the traditional stirring rod, the dynamically moving stirring rod can more effectively ensure that the liquid in the distribution funnel is evenly mixed, so that the evenly added extractant and leachate are fully mixed, avoiding local accumulation of extractant, thereby significantly improving the extraction efficiency and mixing uniformity.

[0020] At the same time, a suction cup is added to the dividing funnel, which can automatically float according to the rise and fall of the liquid level. The suction cup can fit tightly with the liquid surface and enhance the suction force through the negative pressure mechanism, so as to efficiently extract the upper and lower layers of liquid in the dividing funnel. When the negative pressure suction nozzle slides from top to bottom, the negative pressure suction force it generates gradually increases, and the negative pressure difference can be used to extract liquids of different masses according to actual needs. The liquid separation efficiency is higher, and it can effectively avoid the upper and lower layers of liquid from mixing and discharging. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the distribution funnel of the present invention.

[0023] Figure 3 It is a structural schematic diagram of the feeding mechanism and negative pressure mechanism of the present invention.

[0024] Figure 4 It is a schematic structural diagram of the negative pressure mechanism of the present invention.

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the tapered pipeline of the present invention.

[0026] Figure 6 For the present invention Figure 2 Enlarged structural diagram at point A in the middle.

[0027] Figure 7 For the present invention Figure 3 Enlarged structural diagram at point B in the middle.

[0028] In the figure: 1. Heating furnace; 101. Furnace cover; 102. Feed port; 103. Exhaust gas duct; 104. Discharge pipe; 2. Distribution funnel; 3. Loading mechanism; 301. Spiral track; 302. Injection pipe; 303. Diverter pipe; 304. Hose; 305. Rotating rod; 306. Servo motor; 307. Annular bump; 308. Push rod; 309. Valve; 4. Suction cup; 5. Negative pressure mechanism; 501. Conical pipe; 502. Fan; 503. Negative pressure nozzle; 504. Screw; 505. Sealing gasket; 6. Reagent bottle; 7. Liquid storage bottle; 8. Negative pressure pipe. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] See also Figures 1 to 7 The present invention provides a technical solution: a separation and processing device for recovering rhenium from sulfur-arsenic slag, comprising a heating furnace 1 and a distribution funnel 2 installed on one side of the heating furnace 1, the distribution funnel 2 is internally provided with a feeding mechanism 3 capable of performing spiral reciprocating motion and uniformly distributing the extractant, a suction cup 4 provided inside the distribution funnel 2 capable of floating up and down following the rise and fall of the liquid level on the distribution funnel 2, and a negative pressure mechanism 5 connected to the suction cup 4 for extracting the liquid inside the distribution funnel 2.

[0031] A reagent bottle 6 is installed on the top of the separating funnel 2 corresponding to the position of the feeding mechanism 3 , and a liquid storage bottle 7 is installed on one side of the separating funnel 2 corresponding to the position of the negative pressure mechanism 5 .

[0032] It should be noted that the uniform dispersion and precise delivery of the extractant are achieved through the feeding mechanism 3, ensuring that it performs spiral reciprocating motion along the distribution funnel 2, thereby expanding the range of action of the extractant and fully mixing it with the leachate to improve the efficiency of the chemical reaction. This process can also prevent local reactions from being too intense, avoiding other impurities from being extracted, and thereby improving the extraction purity of rhenium.

[0033] At the same time, a suction cup 4 is added to the separating funnel 2, which can automatically float according to the rise and fall of the liquid level. The suction cup 4 can fit tightly with the liquid surface and enhance the suction force through the negative pressure mechanism 5, so as to efficiently extract the upper and lower layers of liquid in the separating funnel 2. Compared with the traditional method of relying on gravity to discharge, this liquid separation method of using the suction cup 4 to absorb and extract the liquid has higher liquid separation efficiency and can effectively avoid the upper and lower layers of liquid from mixing and discharging.

[0034] In this embodiment, if Figure 2 and Figure 3 As shown, the feeding mechanism 3 includes a spiral track 301 welded to the inner wall of the distribution funnel 2 and an injection pipe 302 that performs spiral reciprocating motion on the spiral track 301. A diversion pipe 303 is installed at one end of the injection pipe 302, and a hose 304 is threadedly connected to the other end of the injection pipe 302.

[0035] A valve 309 for controlling the flow of the extractant is installed at one end of the hose 304 away from the injection pipe 302 .

[0036] It should be noted that the valve 309 is connected to one side of the discharge port of the reagent bottle 6. When the valve 309 is opened, the extractant in the reagent bottle 6 flows to the hose 304, and then enters the injection pipe 302 through the hose 304, and is finally distributed to the inside of the distribution material through the diversion pipe 303. The function of the valve 309 is to adjust the flow rate of the extractant, and the spiral track 301 is responsible for controlling the position of the injection pipe 302 and the diversion pipe 303 to ensure that the extractant is evenly distributed in the distribution funnel 2 and is fully mixed with the leachate.

[0037] Specifically, the spiral track 301 controls the movement trajectory of the injection pipe 302 and the diversion pipe 303. The track is welded to the inner wall of the distribution funnel 2, providing a spiral reciprocating movement path for the injection pipe 302. The injection pipe 302 moves from top to bottom along the spiral track 301, and then moves in the opposite direction to reset. During this process, the extractant is evenly injected into the distribution funnel 2 through the diversion pipe 303, ensuring that the extractant is evenly distributed in the distribution funnel 2, and the addition rate is stable, fully in contact with the leachate, and quickly merges, thereby significantly improving the extraction efficiency and mixing uniformity.

[0038] In this embodiment, if Figure 3 and Figure 7As shown, an annular protrusion 307 is provided on the outside of the injection pipe 302 , and the injection pipe 302 is connected to the spiral track 301 in a sliding manner through the annular protrusion 307 .

[0039] It should be noted that the function of the annular protrusion 307 of the injection pipe 302 is to limit the lower end of the injection pipe 302 on the spiral track 301 to prevent it from escaping from the spiral track 301 when performing spiral reciprocating motion, thereby improving the stability of the entire structure.

[0040] In this embodiment, if Figure 2 and Figure 3 As shown, the spiral track 301 is a three-dimensional conical track, and the inner diameter of the spiral track 301 gradually decreases from top to bottom, and a rotating rod 305 for driving the injection pipe 302 to rotate passes through the middle of the spiral track 301, and the output shaft of the servo motor 306 is installed at the bottom of the rotating rod 305, and the servo motor 306 is arranged on the outside of the distribution funnel 2.

[0041] It should be noted that, in this embodiment, the spiral track 301 adopts a three-dimensional conical design, and its inner diameter gradually narrows from top to bottom. This special structural design makes the spiral track 301 more compatible with the shape of the existing distribution funnel 2, and during the movement of the injection pipe 302, the extractant is placed at various positions in the distribution funnel 2.

[0042] At the same time, a rotating rod 305 is set through the middle of the spiral track 301, and the bottom of the rotating rod 305 is connected to the output shaft of the servo motor 306. The servo motor 306 is installed outside the distribution funnel 2. The forward and reverse rotation of the rotating rod 305 is controlled by the servo motor 306. When the rotating rod 305 rotates forward, it drives the injection pipe 302 to rotate from top to bottom along the spiral track 301. When the rotating rod 305 is reversed, the injection pipe 302 is reset from bottom to top along the spiral track 301. While performing reciprocating motion, it ensures that the extractant is evenly dispersed from outside to inside and from top to bottom in the distribution funnel 2 at different heights and areas to ensure sufficient and efficient mixing of the extractant and the leachate.

[0043] In addition, the dynamic rotational displacement of the injection pipe 302 acts like a stirring rod, so that the internal solution is fully mixed. Compared with the traditional stirring rod, the dynamically moving stirring rod can more effectively ensure that the liquid in the distribution funnel 2 is evenly mixed, so that the extractant and leachate are evenly added and sufficient, avoiding local accumulation of the extractant.

[0044] In this embodiment, if Figure 3 As shown, a shifting rod 308 is fixedly connected to the top of the rotating rod 305 , and a through groove is opened on the surface of the shifting rod 308 , and the injection pipe 302 slides back and forth linearly along the inner wall of the through groove.

[0045] It should be noted that a shift rod 308 is connected to the top of the rotating rod 305, and a vertical structure is set between the shift rod 308 and the rotating rod 305. The rotating rod 305 and the shift rod 308 are fixedly connected. When the rotating rod 305 rotates, it drives the shift rod 308 to rotate synchronously. When the shift rod 308 rotates, it drives the injection pipe 302 to slide back and forth along the through groove. The through groove provides a displacement range for the injection pipe 302, so that the injection pipe 302 slides along the through groove of the shift rod 308 while sliding along the spiral track 301. The two limit the injection pipe 302 at the same time, making its operation more stable.

[0046] In this embodiment, if Figure 4 As shown, the negative pressure mechanism 5 includes a tapered pipe 501 installed directly above the liquid storage bottle 7, a fan 502 installed on the top of the tapered pipe 501, and a negative pressure suction nozzle 503 sliding along the side curved surface of the tapered pipe 501.

[0047] One side of the negative pressure suction nozzle 503 is threadedly connected to a screw rod 504 , and the screw rod 504 is rotated to drive the negative pressure suction nozzle 503 to slide along the side curved surface of the tapered pipe 501 , thereby achieving fine adjustment of the negative pressure suction force of the negative pressure suction nozzle 503 .

[0048] It should be noted that the fan 502 of the negative pressure mechanism 5 is fixed to the outside of the distribution funnel 2 by bolts, and its air outlet is connected to the wider end of the conical pipe 501. The fan 502 provides a continuous airflow in the conical pipe 501. As the airflow flows, the gas flow rate in the pipe increases and the air pressure decreases, thereby realizing the extraction of the liquid in the distribution funnel 2.

[0049] In addition, it should be pointed out that the inner diameter of the conical pipe 501 gradually decreases from top to bottom, so that the gas flow rate gradually increases as the inner diameter decreases. When the negative pressure suction nozzle 503 slides from top to bottom, the negative pressure suction force it generates gradually increases, and different masses of liquids can be extracted using the negative pressure difference according to actual needs.

[0050] In this embodiment, if Figure 5 As shown, the side curved surface of the conical pipe 501 is provided with a strip opening, the negative pressure suction nozzle 503 slides along the strip opening, and a sealing gasket 505 is fixedly connected to the outside of the negative pressure suction nozzle 503 and slides along the inner wall of the conical pipe 501.

[0051] It should be noted that the strip opening is designed to provide a sliding path for the negative pressure suction nozzle 503, and can control the negative pressure suction nozzle 503 to move smoothly along the side curved surface of the conical pipe 501. The sealing gasket 505 is installed on the inner wall of the conical pipe 501. When the negative pressure suction nozzle 503 slides up and down, the sealing gasket 505 can close the other gaps of the strip opening and effectively prevent liquid leakage.

[0052] In addition, in this embodiment, the sealing gasket 505 is made of metal material, and it can undergo corresponding deformation according to the shape change of the inner wall of the tapered pipe 501. When the negative pressure suction nozzle 503 slides down along the inner wall of the tapered pipe 501, the sealing gasket 505 will adaptively deform, and when the negative pressure suction nozzle 503 slides upward, the sealing gasket 505 can automatically return to its original shape.

[0053] In this embodiment, if Figure 3 As shown, a negative pressure tube 8 is wrapped around the surface of the rotating rod 305, one end of the negative pressure tube 8 is bonded to the suction cup 4, and the other end of the negative pressure tube 8 is threadedly connected to the negative pressure suction nozzle 503. A circular fixing block is provided at one end of the lever 308 close to the rotating rod 305, and the negative pressure tube 8 passes through the circular fixing block and is connected to the suction cup 4.

[0054] In this embodiment, if Figure 3 As shown, a circular cavity is provided in the middle of the suction cup 4 , a sliding connection is adopted between the suction cup 4 and the shifting rod 308 , and a liquid inlet is provided on the outside of the suction cup 4 .

[0055] It should be noted that the negative pressure tube 8 is made of flexible material, and is distributed in a spirally wound manner on the outside of the rotating rod 305. The spiral rotation direction of the negative pressure tube 8 is opposite to the rotation direction of the spiral track 301. Through the forward and reverse rotation of the rotating rod 305, the shape of the negative pressure tube 8 on the surface of the rotating rod 305 is dynamic, avoiding excessive winding of the negative pressure tube 8.

[0056] Specifically, when the rotating rod 305 rotates forward, it drives the injection pipe 302 to move from top to bottom, and at the same time the negative pressure tube 8 rotates in the opposite direction and unfolds along the surface of the rotating rod 305. When the rotating rod 305 rotates in the opposite direction, the injection pipe 302 is reset from bottom to top, and the negative pressure tube 8 is also reset along the surface of the rotating rod 305 in a spiral winding manner.

[0057] Through the connection between the negative pressure tube 8 and the suction cup 4, the negative pressure suction force generated by the negative pressure mechanism 5 is transmitted to the suction cup 4, and the suction cup 4 is continuously suspended at the upper liquid level of the dividing funnel 2. The up and down floating path of the suction cup 4 is controlled by the rotating rod 305, and there is a gap between the rotating rod 305 and the suction cup 4, so that the suction cup 4 can slide up and down smoothly on the surface of the rotating rod 305. The liquid in the dividing funnel 2 is sucked into the negative pressure tube 8 by using the liquid inlet on the suction cup 4, and then transported to the tapered pipe 501, and finally the liquid is transported to the liquid storage bottle 7.

[0058] In this embodiment, if Figure 1 As shown, a furnace cover 101 is installed on the top of the heating furnace 1, a material inlet 102 and an exhaust gas pipe 103 are provided on the surface of the furnace cover 101, and a material discharge pipe 104 is provided at the bottom of the heating furnace 1.

[0059] It should be noted that the heating furnace 1 in this embodiment adopts a vertical high-temperature resistant heating furnace 1 with a built-in silicon carbon rod heating element to provide a stable high-temperature environment. It belongs to the existing technology. The sulfur-arsenic slag raw material is injected through the feed port 102, so that rhenium enters the solution in the form of oxide ions to form a leachate, and at the same time, sulfur and arsenic are volatilized, and the waste gas is discharged from the waste gas pipe. One end of the discharge pipe 104 is opposite to the separation funnel 2. A filter is provided on the inner wall of the discharge pipe 104 to filter impurities. The leachate is transported to the separation funnel 2 through the discharge pipe 104 for the next step of extraction and separation.

[0060] Working principle: When using the separation and processing device for recovering rhenium from sulphur-arsenic slag: First, the sulfur-arsenic slag is pretreated: the sulfur-arsenic slag is pretreated, including steps such as crushing and screening. The pretreated sulfur-arsenic slag is mixed with an alkaline solution at a certain liquid-to-solid ratio and added to a heating furnace 1. The leaching temperature is controlled between 80° and 120°C, and the leaching time is between 1 hour and 3 hours. The target element in the sulfur-arsenic slag is converted into a soluble ionic form and enters the leachate. After the leaching is completed, the switch of the discharge pipe 104 is opened to separate the leachate and the leachate slag into solid and liquid. The leachate enters the separation funnel 2 and enters the next extraction step; Secondly, the leachate is extracted: the extractant is injected into the reagent bottle 6, the valve 309 is opened, the extractant enters the injection pipe 302 through the hose 304, enters the diverter pipe 303 through the injection pipe 302, and flows into the distribution funnel 2 through the diverter pipe 303. At the same time, the servo motor 306 is turned on, and the servo motor 306 drives the rotating rod 305 to rotate forward and reverse; Specifically, the forward rotation of the rotating rod 305 drives the lever 308 to rotate forward, and the injection pipe 302 slides from top to bottom along the spiral track 301, and at the same time, the extractant is evenly fed into the distribution funnel 2 from top to bottom and from outside to inside. Conversely, when the servo motor 306 is reversed, the rotating rod 305 and the lever 308 are driven to reverse, and the injection pipe 302 is reset from bottom to top. At this time, the extraction agent is diffused from bottom to top and from inside to outside. The injection pipe 302 stirs the solution inside while rotating and displacing, so that the leachate and the extractant are fully mixed. This reciprocating process evenly distributes the extractant to various positions in the distribution funnel 2, thereby improving the efficiency of the chemical reaction. The rhenium element reacts with the extractant and is transferred to the organic phase. Then, preliminary extraction and separation are carried out: the servo motor 306 and the valve 309 are turned off, and the layers are allowed to stand and separate. The organic phase carrying the rhenium element is separated from the aqueous phase to form an upper liquid layer and a lower liquid layer. The upper liquid layer is lighter in mass. The fan 502 is started, and the screw rod 504 is rotated forward to adjust the negative pressure suction nozzle 503 to the top. The fan 502 is aimed at the conical pipe 501 to blow air. The gas flow rate in the conical pipe 501 is accelerated, so that the gas in the negative pressure pipe 8 is sucked out. The negative pressure pipe 8 and the suction cup 4 form a negative pressure. The upper liquid layer is first extracted and adsorbed into the liquid storage bottle 7. As the upper liquid layer is extracted, the suction force of the negative pressure suction nozzle 503 is small and cannot adsorb the lower liquid layer. A new liquid storage bottle 7 is replaced, and the screw rod 504 is rotated in the opposite direction to drive the negative pressure suction nozzle 503 to slide downward. The suction force gradually increases until the lower liquid layer is adsorbed and extracted to obtain a separate organic phase containing the rhenium element.

[0061] Finally, the organic phase containing rhenium is subjected to reverse extraction, the extractant in the reagent bottle 6 is sucked out, and a stripping agent is added to transfer the organic phase containing rhenium back into the aqueous phase, thereby achieving the enrichment and separation of rhenium. During the reverse extraction process, the servo motor 306 and the valve 309 are reopened to carry out a new round of directional addition of the stripping agent, and then the aqueous phase containing rhenium is extracted again through the negative pressure mechanism 5.

[0062] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A separation and processing device for recovering rhenium from sulfur-arsenic slag, comprising a heating furnace (1) and a distribution funnel (2) installed on one side of the heating furnace (1), characterized in that: The distribution funnel (2) is internally provided with a feeding mechanism (3) capable of performing spiral reciprocating motion and uniformly distributing the extractant, a suction cup (4) provided inside the distribution funnel (2) capable of floating up and down following the rise and fall of the liquid level on the distribution funnel (2), and a negative pressure mechanism (5) connected to the suction cup (4) for extracting the liquid inside the distribution funnel (2); A reagent bottle (6) is installed on the top of the dividing funnel (2) at a position corresponding to the feeding mechanism (3), and a liquid storage bottle (7) is installed on one side of the dividing funnel (2) at a position corresponding to the negative pressure mechanism (5).

2. The separation and processing device for recovering rhenium from sulfur-arsenic slag according to claim 1, characterized in that: The feeding mechanism (3) comprises a spiral track (301) welded to the inner wall of the distribution funnel (2) and a material injection pipe (302) that performs a spiral reciprocating motion on the spiral track (301), a diversion pipe (303) being installed at one end of the material injection pipe (302), and a hose (304) being threadedly connected to the other end of the material injection pipe (302); A valve (309) for controlling the flow of the extractant is installed at one end of the hose (304) away from the injection pipe (302).

3. The separation and processing device for recovering rhenium from sulphur-arsenic slag according to claim 2, characterized in that: An annular protrusion (307) is provided on the outside of the injection pipe (302), and the injection pipe (302) is connected to the spiral track (301) in a sliding manner via the annular protrusion (307).

4. The separation and processing device for recovering rhenium from arsenic-sulfur slag according to claim 2, characterized in that: The spiral track (301) is a three-dimensional conical track, and the inner diameter of the spiral track (301) gradually decreases from top to bottom. A rotating rod (305) for driving the injection pipe (302) to rotate is passed through the middle of the spiral track (301). The output shaft of the servo motor (306) is installed at the bottom of the rotating rod (305). The servo motor (306) is arranged outside the distribution funnel (2).

5. The separation and processing device for recovering rhenium from sulphuric arsenic slag according to claim 4, characterized in that: The top of the rotating rod (305) is fixedly connected to a shifting rod (308), a through groove is provided on the surface of the shifting rod (308), and the injection pipe (302) slides back and forth linearly along the inner wall of the through groove.

6. The separation and processing device for recovering rhenium from sulfur-arsenic slag according to claim 1, characterized in that: The negative pressure mechanism (5) comprises a tapered pipe (501) installed directly above the liquid storage bottle (7), a fan (502) installed at the top of the tapered pipe (501), and a negative pressure nozzle (503) sliding along the side curved surface of the tapered pipe (501); One side of the negative pressure suction nozzle (503) is threadedly connected to a screw rod (504), and the screw rod (504) is rotated to drive the negative pressure suction nozzle (503) to slide along the side curved surface of the tapered pipe (501), thereby achieving fine adjustment of the negative pressure suction force of the negative pressure suction nozzle (503).

7. The separation and processing device for recovering rhenium from sulphuric arsenic slag according to claim 6, characterized in that: The side curved surface of the tapered pipe (501) is provided with a strip opening, the negative pressure suction nozzle (503) slides along the strip opening, and a sealing gasket (505) is fixedly connected to the outside of the negative pressure suction nozzle (503) and is slidably connected along the inner wall of the tapered pipe (501).

8. The separation and processing device for recovering rhenium from sulfur-arsenic slag according to claim 5, characterized in that: A negative pressure tube (8) is wound around the surface of the rotating rod (305), one end of the negative pressure tube (8) is bonded to the suction cup (4), and the other end of the negative pressure tube (8) is threadedly connected to the negative pressure suction nozzle (503). A circular fixing block is provided at one end of the shifting rod (308) close to the rotating rod (305), and the negative pressure tube (8) passes through the circular fixing block and is connected to the suction cup (4).

9. The separation and processing device for recovering rhenium from arsenic-sulfur slag according to claim 5, characterized in that: A circular cavity is provided in the middle of the suction cup (4), a sliding connection is adopted between the suction cup (4) and the shifting rod (308), and a liquid inlet is provided on the outside of the suction cup (4).

10. The separation and processing device for recovering rhenium from sulfur-arsenic slag according to claim 1, characterized in that: A furnace cover (101) is installed on the top of the heating furnace (1), a feed port (102) and an exhaust gas pipe (103) are provided on the surface of the furnace cover (101), and a discharge pipe (104) is provided at the bottom of the heating furnace (1).

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