Ammonium rhenate extraction mechanism and extraction method

Abstract

The invention belongs to the technical field of ammonium rhenate preparation, and particularly relates to an ammonium rhenate extraction mechanism and method. The ammonium rhenate extraction mechanism comprises a kettle body, an inner container, a first rotating rod, a first motor, blades, a partition plate and an interception plate; the ammonium rhenate solution is conveyed into the kettle body, and meanwhile, a first motor drives a first rotating rod and a paddle to rotate, so that the ammonium rhenate solution rotates in the kettle body; the ammonium rhenate solution in the kettle body is cooled, so that ammonium rhenate crystals are separated out of the ammonium rhenate solution; meanwhile, the ammonium rhenate solution rotates, the ammonium rhenate crystals are fully intercepted by the intercepting plate, the ammonium rhenate crystals are attached to the surface of the intercepting plate, then the partition plate is controlled to rotate and turn over, the intercepting plate attached with the ammonium rhenate crystals is driven to rotate into the collecting cavity, and the ammonium rhenate crystals on the surface of the intercepting plate fall into the collecting cavity; the ammonium rhenate crystals attached to the inner wall of the inner container are reduced, the ammonium rhenate crystals can be continuously discharged, the cleaning frequency of workers is reduced, and the production efficiency of the ammonium rhenate crystals is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of ammonium rhenate preparation, in particular to an ammonium rhenate extraction mechanism and an extraction method. Background Art

[0002] Ammonium rhenate is a white, crystalline inorganic compound. It is one of the most widely used rhenium compounds in industry. It is mainly used to manufacture super heat-resistant alloys required by the aerospace and nuclear industries, and key products for petroleum refining and reforming to produce lead-free or low-lead gasoline and Pt-Re alloy catalysis.

[0003] A patent application with publication number CN108408785A discloses a method for preparing high-purity ammonium rhenate, which comprises: 1. dissolving ammonium rhenate in pure water to obtain an ammonium rhenate solution and adjusting the pH to 7-10, then oxidizing and precipitating in sequence, and obtaining an ammonium rhenate solution free of Tl by centrifugation; 2. concentrating and crystallizing the ammonium rhenate solution free of Tl, and then oxidizing and volatilizing it to obtain a perrhenic acid solution; 3. exchanging and removing impurities from the perrhenic acid solution using a cation exchange resin; 4. , adding ammonia water to the perrhenic acid solution after adsorption and impurity removal and concentrating and crystallizing to obtain high-purity ammonium rhenate; the invention first oxidizes Tl+ in the ammonium rhenate solution to Tl3+, and then removes the harmful impurity Tl through the synergistic effect of hydrolysis precipitation of Tl3+ and adsorption and encapsulation of flocculant, and then removes trace Tl and other impurity elements through oxidation volatilization, ion exchange and concentrated crystallization in turn to obtain high-purity ammonium rhenate with low Tl content, which meets the requirements of aviation materials for low Tl content in rhenium.

[0004] When a high concentration of ammonium rhenate solution is crystallized, the ammonium rhenate solution needs to be cooled so that the ammonium rhenate crystals in the ammonium rhenate solution are precipitated; the ammonium rhenate crystals are formed on the inner wall of the crystallization kettle, which is not conducive to the discharge of the ammonium rhenate crystals. At the same time, the staff needs to frequently clean up, which seriously affects the production efficiency.

[0005] To this end, the present invention provides an ammonium rhenate extraction mechanism and an extraction method. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: an ammonium rhenate extraction mechanism described in the present invention comprises a kettle body; an inner tank is fixedly connected to the inner side of the outer wall of the kettle body; a collecting chamber is formed between the inner wall of the kettle body and the outer wall of the inner tank; a rotating rod No. 1 is rotatably installed in the middle of the kettle body; the top end of the rotating rod No. 1 rotates and penetrates the top wall of the kettle body; a motor No. 1 is fixedly connected to the middle of the top surface of the kettle body; the output shaft of the motor No. 1 is fixedly connected to the top end of the rotating rod No. 1; a paddle is fixedly connected to the bottom end of the rotating rod No. 1; a plurality of through grooves are arranged around the inner tank; a separation assembly is arranged inside the through groove; the separation assembly comprises a partition rotatably installed inside the through groove; a plurality of interception plates are fixedly connected to both sides of the middle of the partition; a plurality of through holes are evenly arranged on the interception plate.

[0008] Preferably, a No. 2 rotating rod is rotatably installed in the middle of the through slot; the partition is fixedly connected to the outer ring of the No. 2 rotating rod; the top end of the No. 2 rotating rod rotates and passes through the top wall of the kettle body; a bracket is fixedly connected to one side of the top of the kettle body; a No. 2 motor is fixedly connected to a side of the bracket away from the kettle body; a No. 1 synchronous wheel is fixedly connected to the outer ring of the output shaft of the No. 2 motor and the top outer ring of the No. 2 rotating rod; a No. 1 synchronous belt is provided on the outer rings of the plurality of No. 1 synchronous wheels.

[0009] Preferably, both sides of the top surface of the bracket are bolted with adjustment wheels; the outer ring of the adjustment wheel is slidably matched with the outer ring of the first synchronous belt.

[0010] Preferably, elastic rubber strips are fixed on both sides of the partition; the elastic rubber strips are in sliding contact with the sides of the through slot; grooves are provided on both sides of the through slot; a fixed magnetic strip is fixed inside the groove; a movable magnetic strip is fixed on one side of the elastic rubber strip close to the groove; the movable magnetic strip is attracted to the fixed magnetic strip.

[0011] Preferably, a sliding ring is slidably installed on the inner side of the outer wall of the kettle body; the inner ring of the sliding ring is bolted with a plurality of fixing seats; the fixing seats correspond to the intercepting plate; a pair of scrapers are bolted to a side of the fixing seat away from the outer wall of the kettle body; the two scrapers are respectively located on both sides of the intercepting plate; a plurality of inclined convex strips are fixed to the adjacent sides of the two scrapers; the inclined convex strips can be in sliding contact with the intercepting plate.

[0012] Preferably, a screw is rotatably mounted on the outer wall of the inner tank; the top end of the screw rotates and penetrates the top wall of the kettle body; a slider is fixedly connected to the inner ring of the sliding ring; the slider is threadedly matched with the screw; a No. 3 motor is fixedly connected to the outer wall of the kettle body on one side close to the screw; a No. 2 synchronous wheel is fixedly connected to the outer ring of the output shaft of the No. 3 motor and the outer ring of the top end of the screw; the outer rings of the two No. 2 synchronous wheels are provided with No. 2 synchronous belts.

[0013] Preferably, a cooling cylinder is fixedly connected to the inner top surface of the kettle body; the cooling cylinder is sleeved on the outer ring of the No. 1 rotating rod; a dividing ring plate is fixedly connected to the inside of the cooling cylinder; the dividing ring plate divides the cooling cylinder into an inner cavity and an outer cavity; a liquid inlet pipe is connected to the top of the outer cavity of the cooling cylinder, and the liquid inlet pipe passes through the top of the kettle body; a liquid outlet pipe is connected to the top of the inner cavity of the cooling cylinder, and the liquid outlet pipe passes through the top of the kettle body; the liquid inlet pipe and the liquid outlet pipe are connected to a liquid storage tank filled with coolant; a plurality of connecting grooves are arranged around the bottom of the dividing ring plate.

[0014] Preferably, a plurality of spiral strips are arranged around the outer cavity of the cooling cylinder; the outer circle of the spiral strips contacts the inner wall of the cooling cylinder; the outer circle of the spiral strips contacts the outer wall of the separating ring plate; the top and bottom ends of the plurality of spiral strips are fixedly connected with an annular plate; a plurality of diversion holes are opened around the annular plate; the diversion hole is located between two of the spiral strips.

[0015] Preferably, a liquid inlet head is fixedly connected to the top surface of the inner wall of the kettle body; an inclined water outlet is provided on one side of the bottom of the liquid inlet head; the top pipe of the liquid inlet head passes through the top wall of the kettle body; a liquid extraction tube is penetrated on the side of the top wall of the kettle body away from the liquid inlet head; a filter head is provided at the bottom of the liquid extraction tube; a cleaning port is provided at the bottom end of the kettle body; a discharge port is provided on the bottom side of the kettle body; the discharge port is connected to the bottom of the collecting chamber; and valves are provided at both the cleaning port and the discharge port.

[0016] An ammonium rhenate extraction method, the extraction method adopts the above-mentioned ammonium rhenate extraction mechanism, and the extraction method comprises the following steps:

[0017] S1: using hydrochloric acid to extract rhenium from the organic phase of the rhenium-containing extract, then introducing chlorine gas into the solution, then adding saturated ammonium chloride solution and stirring, filtering to obtain a precipitate; finally, washing with ammonium hydrochloric acid and ethanol solution to obtain ammonium rhenate powder;

[0018] S2: mixing ammonium rhenate with deionized water, heating to dissolve, and adjusting the pH value to obtain an ammonium rhenate solution;

[0019] S3: The ammonium rhenate solution is transported to the interior of the kettle body. At the same time, the No. 1 motor drives the No. 1 rotating rod and the paddle to rotate, so that the ammonium rhenate solution rotates inside the kettle body;

[0020] S4: At the same time, the coolant is injected into the outer cavity of the cooling cylinder. The coolant is guided by the spiral strips to form multiple rotating water flows in the outer cavity of the cooling cylinder. Then, the coolant flows into the inner cavity of the cooling cylinder through the connecting groove and finally, is discharged from the kettle body; the ammonium rhenate solution in the kettle body is cooled, so that ammonium rhenate crystals are precipitated in the ammonium rhenate solution;

[0021] S5: The liquid in the kettle rotates, driving the ammonium rhenate crystals to pass through a plurality of interception plates, so that the ammonium rhenate crystals adhere to the surface of the interception plates;

[0022] S6: Afterwards, the partition is controlled to rotate and turn over, driving the interception plate with the ammonium rhenate crystals attached to rotate into the inside of the collection chamber, and the interception plate located inside the collection chamber rotates into the ammonium rhenate solution inside the kettle body;

[0023] S7: driving the sliding ring to slide downward, driving the scraper to push and clean the two sides of the interception plate, pushing the attached ammonium rhenate crystals to the bottom of the collection chamber, and then discharging them from the discharge port;

[0024] S8: Finally, the ammonium rhenate crystals are dried to obtain high-purity ammonium rhenate.

[0025] The beneficial effects of the present invention are as follows:

[0026] 1. An ammonium rhenate extraction mechanism and extraction method described in the present invention include a kettle body, an inner tank, a No. 1 rotating rod, a No. 1 motor, a paddle, a partition and an interception plate; the ammonium rhenate solution is transported to the interior of the kettle body, and at the same time, the No. 1 motor drives the No. 1 rotating rod and the paddle to rotate, so that the ammonium rhenate solution rotates inside the kettle body; at this time, the partition is located inside the through groove on the inner tank, the partition blocks the through groove, the interception plate on one side of the partition extends into the interior of the inner tank, and the interception plate on the other side is located inside the collecting chamber; the ammonium rhenate solution in the kettle body is cooled, so that ammonium rhenate crystals are precipitated in the ammonium rhenate solution; at the same time, the ammonium rhenate solution The partition is controlled to rotate and flip over, driving the interception plate with the ammonium rhenate crystals attached to the collecting chamber, while the interception plate located inside the collecting chamber rotates into the ammonium rhenate solution inside the kettle body; the ammonium rhenate crystals on the surface of the interception plate fall into the collecting chamber, thereby reducing the ammonium rhenate crystals adhering to the inner wall of the inner tank, being able to continuously discharge the ammonium rhenate crystals, reducing the frequency of cleaning by the staff, and improving the production efficiency of the ammonium rhenate crystals.

[0027] 2. The ammonium rhenate extraction mechanism and extraction method described in the present invention include a sliding ring, a fixed seat, a scraper, an inclined convex strip, a screw, a slider, a No. 3 motor, a No. 2 synchronous wheel and a No. 2 synchronous belt; when the interception plate of the ammonium rhenate crystals rotates to the inside of the collecting chamber, at this time, the sliding ring is located at the top of the collecting chamber, the scraper is located at the top of the interception plate, and each pair of scrapers is aligned with the interception plate; the No. 3 motor drives the No. 2 synchronous wheel to rotate, and through the No. 2 synchronous belt transmission, drives the No. 2 synchronous wheel and the screw to rotate, drives the slider and the sliding ring to move downward, drives each pair of scrapers to move downward along the two sides of the interception plate, and the inclined protrusions on the scraper push the ammonium rhenate crystals on the surface of the interception plate to the bottom of the collecting chamber, thereby realizing the collection of the ammonium rhenate crystals. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 is a stereogram of the present invention;

[0030] Figure 2 It is the internal structure diagram of the kettle body in the present invention;

[0031] Figure 3 is a cross-sectional view of a kettle body in the present invention;

[0032] Figure 4 yes Figure 3 A partial enlarged view of the middle part;

[0033] Figure 5 is a perspective view of the separation components of the present invention;

[0034] Figure 6 is a three-dimensional diagram of a partition in the present invention;

[0035] Figure 7 It is a three-dimensional diagram of the fixing base and the scraper in the present invention;

[0036] Figure 8 It is a three-dimensional diagram of the cooling cylinder in the present invention;

[0037] Fig. 9 It is a cross-sectional view of the cooling cylinder in the present invention;

[0038] Fig.10 is a stereogram of the spiral strip plate and the annular plate in the present invention;

[0039] Fig.11 is a flow chart of the extraction method of the present invention;

[0040] In the figure: 1. kettle body; 2. liner; 3. collecting chamber; 4. No. 1 rotating rod; 5. No. 1 motor; 6. paddle; 7. through groove; 8. partition; 9. intercepting plate; 10. No. 2 rotating rod; 11. bracket; 12. No. 2 motor; 13. No. 1 synchronous wheel; 14. No. 1 synchronous belt; 15. adjusting wheel; 16. elastic rubber strip; 17. groove; 18. fixed magnetic strip; 19. movable magnetic strip; 20. sliding ring; 21. fixing seat; 22. scraper; 23. inclined convex strip; 24. screw rod; 25. slider; 26. No. 3 motor; 27. No. 2 synchronous wheel; 28. No. 2 synchronous belt; 29. ​​cooling cylinder; 30. dividing ring plate; 31. connecting groove; 32. spiral strip plate; 33. annular plate; 34. diversion hole; 35. liquid inlet head; 36. liquid extraction pipe; 37. cleaning port; 38. discharge port. DETAILED DESCRIPTION

[0041] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0042] like Figures 1 to 6 As shown, an ammonium rhenate extraction mechanism described in an embodiment of the present invention comprises a kettle body 1; an inner tank 2 is fixedly connected to the inner side of the outer wall of the kettle body 1; a collecting chamber 3 is formed between the inner wall of the kettle body 1 and the outer wall of the inner tank 2; a No. 1 rotating rod 4 is rotatably installed in the middle of the kettle body 1; the top end of the No. 1 rotating rod 4 rotates and penetrates the top wall of the kettle body 1; a No. 1 motor 5 is fixedly connected to the middle of the top surface of the kettle body 1; the output shaft of the No. 1 motor 5 is fixedly connected to the top end of the No. 1 rotating rod 4; a paddle 6 is fixedly connected to the bottom end of the No. 1 rotating rod 4; a plurality of through grooves 7 are arranged around the inner tank 2; a separation assembly is arranged inside the through groove 7; the separation assembly comprises a partition 8 rotatably installed inside the through groove 7; a plurality of interception plates 9 are fixedly connected to both sides of the middle of the partition 8; a plurality of through holes are evenly arranged on the interception plate 9;

[0043] During operation, hydrochloric acid is used to extract rhenium from the organic phase of the rhenium-containing extract, and chlorine gas is then introduced into the solution. After that, a saturated ammonium chloride solution is added and stirred, filtered, and a precipitate is obtained; finally, after washing with ammonium-containing hydrochloric acid and ethanol solution, ammonium rhenate powder is obtained; the ammonium rhenate is mixed with deionized water, heated to dissolve, and at the same time, the pH value is adjusted to obtain an ammonium rhenate solution; the ammonium rhenate solution is transported to the interior of the kettle body 1, and at the same time, the No. 1 motor 5 drives the No. 1 rotating rod 4 and the paddle 6 to rotate, so that the ammonium rhenate solution rotates inside the kettle body 1; at this time, the partition 8 is located inside the through groove 7 on the inner tank 2, and the partition 8 blocks the through groove 7, and the interception plate 9 on one side of the partition 8 extends into the interior of the inner tank 2, while the interception plate 9 on the other side is located inside the collecting chamber 3; the inside of the kettle body 1 The ammonium rhenate solution in the upper part is cooled to precipitate ammonium rhenate crystals in the ammonium rhenate solution; at the same time, the ammonium rhenate solution rotates, and the interception plate 9 located inside the inner tank 2 blocks the rotating ammonium rhenate solution, so that the ammonium rhenate crystals are fully intercepted by the interception plate 9, and the ammonium rhenate crystals adhere to the surface of the interception plate 9; then, the partition plate 8 is controlled to rotate and turn over, driving the interception plate 9 with the ammonium rhenate crystals attached to rotate into the inside of the collecting chamber 3, and the interception plate 9 located inside the collecting chamber 3 rotates into the ammonium rhenate solution inside the kettle body 1; the ammonium rhenate crystals on the surface of the interception plate 9 fall into the collecting chamber 3, thereby reducing the ammonium rhenate crystals adhering to the inner wall of the inner tank 2, and can continuously discharge the ammonium rhenate crystals, reducing the frequency of cleaning by the staff, and improving the production efficiency of the ammonium rhenate crystals.

[0044] like Figures 1 to 6 As shown, a No. 2 rotating rod 10 is rotatably mounted in the middle of the through slot 7; the partition plate 8 is fixedly connected to the outer ring of the No. 2 rotating rod 10; the top end of the No. 2 rotating rod 10 rotates and penetrates the top wall of the kettle body 1; a bracket 11 is fixedly connected to one side of the top of the kettle body 1; a No. 2 motor 12 is fixedly connected to the side of the bracket 11 away from the kettle body 1; the outer ring of the output shaft of the No. 2 motor 12 and the outer ring of the top end of the No. 2 rotating rod 10 are both fixedly connected to a No. 1 synchronous wheel 13; the outer rings of the plurality of No. 1 synchronous wheels 13 are sleeved with a No. 1 synchronous belt 14;

[0045] During operation, the second motor 12 drives the first synchronous wheel 13 to rotate, which is transmitted through the first synchronous belt 14, driving multiple first synchronous wheels 13 to rotate synchronously, and driving multiple second rotating rods 10 to rotate synchronously, thereby providing power for the rotation and turning of the partition 8.

[0046] like Figure 1 As shown, adjusting wheels 15 are bolted to both sides of the top surface of the bracket 11; the outer ring of the adjusting wheel 15 is slidably matched with the outer ring of the No. 1 synchronous belt 14; the two sides of the No. 1 synchronous belt 14 are squeezed by the adjusting wheels 15 on both sides, so that the No. 1 synchronous belt 14 is tightened, so that the No. 1 synchronous belt 14 and the No. 1 synchronous wheel 13 can stably cooperate for transmission.

[0047] like Figures 2 to 6 As shown, elastic rubber strips 16 are fixedly connected to both sides of the partition 8; the elastic rubber strips 16 are in sliding contact with the side of the through slot 7; grooves 17 are provided on both sides of the through slot 7; a fixed magnetic strip 18 is fixedly connected to the inside of the groove 17; a movable magnetic strip 19 is fixedly connected to the side of the elastic rubber strip 16 close to the groove 17; the movable magnetic strip 19 is attracted to the fixed magnetic strip 18;

[0048] During operation, when the partition 8 is located inside the through groove 7 on the inner tank 2, the movable magnetic strip 19 is attracted to the fixed magnetic strip 18 inside the groove 17, and the movable magnetic strip 19 drives the elastic rubber strip 16 to stretch, so that the elastic rubber strip 16 extends into the interior of the groove 17, sealing the gap between the partition 8 and the through groove 7, thereby improving the sealing effect of the partition 8 on the through groove 7.

[0049] like Figures 2 to 7 As shown, a sliding ring 20 is slidably installed on the inner side of the outer wall of the kettle body 1; the inner ring of the sliding ring 20 is bolted with a plurality of fixing seats 21; the fixing seats 21 correspond to the interception plate 9; a pair of scrapers 22 are bolted to the side of the fixing seat 21 away from the outer wall of the kettle body 1; the two scrapers 22 are respectively located on both sides of the interception plate 9; the sides of the two scrapers 22 that are close to each other are fixed with a plurality of inclined convex strips 23; the inclined convex strips 23 can be in sliding contact with the interception plate 9;

[0050] A screw 24 is rotatably mounted on the outer wall of the inner pot 2; the top end of the screw 24 rotates and penetrates the top wall of the kettle body 1; a slider 25 is fixedly connected to the inner ring of the sliding ring 20; the slider 25 is threadedly matched with the screw 24; a No. 3 motor 26 is fixedly connected to the outer wall of the kettle body 1 on one side close to the screw 24; the outer ring of the output shaft of the No. 3 motor 26 and the outer ring of the top end of the screw 24 are both fixedly connected to a No. 2 synchronous wheel 27; the outer rings of the two No. 2 synchronous wheels 27 are sleeved with a No. 2 synchronous belt 28;

[0051] During operation, when the interception plate 9 of the ammonium rhenate crystals rotates to the inside of the collecting chamber 3, at this time, the sliding ring 20 is located at the top of the collecting chamber 3, the scraper 22 is located at the top of the interception plate 9, and each pair of scrapers 22 is aligned with the interception plate 9; the No. 3 motor 26 drives the No. 2 synchronous wheel 27 to rotate, and through the transmission of the No. 2 synchronous belt 28, drives the No. 2 synchronous wheel 27 and the screw 24 to rotate, drives the slider 25 and the sliding ring 20 to move downward, and drives each pair of scrapers 22 to move downward along the two sides of the interception plate 9. The inclined protrusions 23 on the scraper 22 push the ammonium rhenate crystals on the surface of the interception plate 9 to the bottom of the collecting chamber 3, thereby realizing the collection of the ammonium rhenate crystals.

[0052] like Figure 1 , Figure 2 , Figure 8 , Fig. 9 and Fig.10 As shown, a cooling cylinder 29 is fixedly connected to the top surface of the interior of the kettle body 1; the cooling cylinder 29 is sleeved on the outer ring of the No. 1 rotating rod 4; a separation ring plate 30 is fixedly connected to the interior of the cooling cylinder 29; the separation ring plate 30 separates the cooling cylinder 29 into an inner cavity and an outer cavity; a liquid inlet pipe is connected to the top of the outer cavity of the cooling cylinder 29, and the liquid inlet pipe passes through the top of the kettle body 1; a liquid outlet pipe is connected to the top of the inner cavity of the cooling cylinder 29, and the liquid outlet pipe passes through the top of the kettle body 1; the liquid inlet pipe and the liquid outlet pipe are connected to a liquid storage tank filled with coolant; a plurality of connecting grooves 31 are arranged around the bottom of the separation ring plate 30;

[0053] The outer cavity of the cooling cylinder 29 is surrounded by a plurality of spiral strips 32; the outer ring of the spiral strips 32 contacts the inner wall of the cooling cylinder 29; the outer ring of the spiral strips 32 contacts the outer wall of the separation ring plate 30; the top and bottom ends of the plurality of spiral strips 32 are fixedly connected to an annular plate 33; the annular plate 33 is surrounded by a plurality of diversion holes 34; the diversion hole 34 is located between two of the spiral strips 32;

[0054] During operation, after the ammonium rhenate solution is transported to the interior of the kettle body 1, at the same time, the coolant inside the liquid storage tank is transported to the outer cavity between the cooling cylinder 29 and the dividing ring plate 30, the coolant is blocked by the ring plate 33, and then diverted through multiple diversion holes 34, so that the coolant is evenly diverted to between the threaded strips 32, forming multiple spiral water flows in the outer cavity of the cooling cylinder 29, which fully cools the outer wall of the cooling cylinder 29 and reduces the temperature of the ammonium rhenate solution. Afterwards, after the coolant flows to the bottom of the outer cavity of the cooling cylinder 29, the coolant flows into the inner cavity of the cooling cylinder 29 through the connecting groove 31, and then is discharged back to the liquid storage tank; thereby effectively and continuously cooling the ammonium rhenate solution, which is conducive to the continuous precipitation of ammonium rhenate crystals from the ammonium rhenate solution.

[0055] like Figure 1 to Figure 2As shown, a liquid inlet head 35 is fixedly connected to the top surface of the inner wall of the kettle body 1; an inclined water outlet is provided on one side of the bottom of the liquid inlet head 35; the top pipe of the liquid inlet head 35 passes through the top wall of the kettle body 1; a liquid extraction pipe 36 is provided on the side of the top wall of the kettle body 1 away from the liquid inlet head 35; a filter head is provided at the bottom of the liquid extraction pipe 36; a cleaning port 37 is provided at the bottom end of the kettle body 1; a discharge port 38 is provided on the bottom side of the kettle body 1; the discharge port 38 is connected to the bottom of the collecting chamber 3; the cleaning port 37 and the discharge port 38 are both provided with valves The ammonium rhenate solution is continuously transported to the interior of the kettle body 1 through the liquid inlet head 35, and the ammonium rhenate solution is guided by the liquid inlet head 35 so that the ammonium rhenate solution rotates when entering the interior of the kettle body 1, which is beneficial to the precipitation of ammonium rhenate crystals in the ammonium rhenate solution; the waste liquid in the kettle body 1 is extracted through the provided liquid extraction pipe 36 and the filter head; thereby achieving the continuous precipitation and separation of the ammonium rhenate crystals; the provided cleaning port 37 is used to clean the ammonium rhenate crystals and waste liquid remaining in the kettle body 1; the provided discharge port 38 is used to continuously recover the ammonium rhenate crystals in the collecting chamber 3.

[0056] like Fig.11 As shown, an ammonium rhenate extraction method, the extraction method adopts the above-mentioned ammonium rhenate extraction mechanism, and the extraction method comprises the following steps:

[0057] S1: using hydrochloric acid to extract rhenium from the organic phase of the rhenium-containing extract, then introducing chlorine gas into the solution, then adding saturated ammonium chloride solution and stirring, filtering to obtain a precipitate; finally, washing with ammonium hydrochloric acid and ethanol solution to obtain ammonium rhenate powder;

[0058] S2: mixing ammonium rhenate with deionized water, heating to dissolve, and adjusting the pH value to obtain an ammonium rhenate solution;

[0059] S3: The ammonium rhenate solution is transported to the interior of the kettle body 1. At the same time, the first motor 5 drives the first rotating rod 4 and the paddle 6 to rotate, so that the ammonium rhenate solution rotates inside the kettle body 1.

[0060] S4: At the same time, the coolant is injected into the outer cavity of the cooling cylinder 29. The coolant is guided by the spiral strips 32 to form multiple rotating water flows in the outer cavity of the cooling cylinder 29. Then, the coolant flows into the inner cavity of the cooling cylinder 29 through the connecting groove 31, and finally, is discharged from the kettle 1; the ammonium rhenate solution in the kettle 1 is cooled, so that ammonium rhenate crystals are precipitated in the ammonium rhenate solution;

[0061] S5: The rotating liquid in the kettle body 1 drives the ammonium rhenate crystals to pass through the plurality of interception plates 9, so that the ammonium rhenate crystals adhere to the surface of the interception plates 9;

[0062] S6: Afterwards, the partition plate 8 is controlled to rotate and turn over, driving the interception plate 9 with the ammonium rhenate crystals attached thereto to rotate into the inside of the collecting chamber 3, and the interception plate 9 located inside the collecting chamber 3 rotates into the ammonium rhenate solution inside the kettle body 1;

[0063] S7: driving the sliding ring 20 to slide downward, driving the scraper 22 to push and clean the two sides of the interception plate 9, pushing the attached ammonium rhenate crystals to the bottom of the collecting chamber 3, and then discharging them from the discharge port 38;

[0064] S8: Finally, the ammonium rhenate crystals are dried to obtain high-purity ammonium rhenate.

[0065] Working principle: Use hydrochloric acid to extract rhenium from the organic phase of the rhenium-containing extract, then introduce chlorine into the solution, then add saturated ammonium chloride solution and stir, filter to obtain a precipitate; finally, wash with ammonium hydrochloric acid and ethanol solution to obtain ammonium rhenate powder; mix ammonium rhenate with deionized water, heat to dissolve, and adjust the pH value to obtain an ammonium rhenate solution;

[0066] The ammonium rhenate solution is continuously transported to the interior of the kettle body 1 through the liquid inlet head 35, and the ammonium rhenate solution is guided by the liquid inlet head 35, so that the ammonium rhenate solution rotates when entering the interior of the kettle body 1; at the same time, the No. 1 motor 5 drives the No. 1 rotating rod 4 and the paddle 6 to rotate, so that the ammonium rhenate solution rotates inside the kettle body 1; at this time, the partition 8 is located inside the through groove 7 on the inner tank 2, and the partition 8 blocks the through groove 7, and the interception plate 9 on one side of the partition 8 extends into the interior of the inner tank 2, and the interception plate 9 on the other side is located inside the collecting chamber 3; at this time, the sliding ring 20 is located at the top of the collecting chamber 3, and the scraper 22 is located at the top of the interception plate 9, and each pair of scrapers 22 is aligned with the interception plate 9;

[0067] At the same time, the coolant in the liquid storage tank is transported to the outer cavity between the cooling cylinder 29 and the separation ring plate 30. The coolant is blocked by the ring plate 33 and then diverted by a plurality of diversion holes 34, so that the coolant is evenly diverted to the threaded strips 32, forming a plurality of spiral water flows in the outer cavity of the cooling cylinder 29, which fully cools the outer wall of the cooling cylinder 29 and reduces the temperature of the ammonium rhenate solution. After that, the coolant flows to the bottom of the outer cavity of the cooling cylinder 29, and then flows to the inner cavity of the cooling cylinder 29 through the connecting groove 31, and then is discharged back to the liquid storage tank.

[0068] The ammonium rhenate solution is cooled to precipitate ammonium rhenate crystals, and the ammonium rhenate solution rotates. The interception plate 9 located inside the inner tank 2 blocks the rotating ammonium rhenate solution, so that the ammonium rhenate crystals are fully intercepted by the interception plate 9, and the ammonium rhenate crystals adhere to the surface of the interception plate 9;

[0069] The second motor 12 drives the first synchronous wheel 13 to rotate, and transmits through the first synchronous belt 14, drives multiple first synchronous wheels 13 to rotate synchronously, and drives multiple second rotating rods 10 to rotate synchronously; controls the partition plate 8 to rotate and turn over, drives the interception plate 9 attached with ammonium rhenate crystals to rotate into the inside of the collection chamber 3, and the interception plate 9 located in the collection chamber 3 rotates into the ammonium rhenate solution inside the kettle body 1;

[0070] The third motor 26 drives the second synchronous wheel 27 to rotate, which is then driven by the second synchronous belt 28 to drive the second synchronous wheel 27 and the screw rod 24 to rotate, driving the slider 25 and the sliding ring 20 to move downward, driving each pair of scrapers 22 to move downward along the two sides of the intercepting plate 9, and the inclined protrusions 23 on the scrapers 22 push the ammonium rhenate crystals on the surface of the intercepting plate 9 to the bottom of the collecting chamber 3;

[0071] The discharge port 38 continuously discharges the ammonium rhenate crystals in the collecting chamber 3; finally, after the ammonium rhenate crystals are dried, high-purity ammonium rhenate is obtained.

[0072] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An ammonium rhenate extraction mechanism, characterized in that: The invention comprises a kettle body (1); an inner liner (2) is fixedly connected to the inner side of the outer wall of the kettle body (1); a collecting chamber (3) is formed between the inner wall of the kettle body (1) and the outer wall of the inner liner (2); a No. 1 rotating rod (4) is rotatably mounted in the middle of the kettle body (1); the top end of the No. 1 rotating rod (4) rotates and penetrates the top wall of the kettle body (1); a No. 1 motor (5) is fixedly connected to the middle of the top surface of the kettle body (1); the output shaft of the No. 1 motor (5) is fixedly connected to the top end of the No. 1 rotating rod (4); a paddle (6) is fixedly connected to the bottom end of the No. 1 rotating rod (4); a plurality of through grooves (7) are arranged around the inner liner (2); a separation assembly is arranged inside the through groove (7); the separation assembly comprises a partition (8) rotatably mounted inside the through groove (7); a plurality of interception plates (9) are fixedly connected to both sides of the middle of the partition (8); a plurality of through holes are evenly arranged on the interception plate (9).

2. An ammonium rhenate extraction mechanism according to claim 1, characterized in that: A No. 2 rotating rod (10) is rotatably mounted in the middle of the through slot (7); the partition (8) is fixedly connected to the outer ring of the No. 2 rotating rod (10); the top end of the No. 2 rotating rod (10) rotates through the top wall of the kettle body (1); a bracket (11) is fixedly connected to one side of the top of the kettle body (1); a No. 2 motor (12) is fixedly connected to the side of the bracket (11) away from the kettle body (1); the outer ring of the output shaft of the No. 2 motor (12) and the outer ring of the top end of the No. 2 rotating rod (10) are both fixedly connected to a No. 1 synchronous wheel (13); and the outer rings of the plurality of No. 1 synchronous wheels (13) are sleeved with a No. 1 synchronous belt (14).

3. An ammonium rhenate extraction mechanism according to claim 2, characterized in that: Adjustment wheels (15) are bolted to both sides of the top surface of the bracket (11); the outer ring of the adjustment wheel (15) is slidably matched with the outer ring of the first synchronous belt (14).

4. The ammonium rhenate extraction mechanism according to claim 1, characterized in that: Both sides of the partition (8) are fixedly connected with elastic rubber strips (16); the elastic rubber strips (16) are in sliding contact with the side surfaces of the through slot (7); both sides of the through slot (7) are provided with grooves (17); a fixed magnetic strip (18) is fixedly connected inside the groove (17); a movable magnetic strip (19) is fixedly connected to the side of the elastic rubber strip (16) close to the groove (17); the movable magnetic strip (19) is attracted to the fixed magnetic strip (18).

5. The ammonium rhenate extraction mechanism according to claim 1, characterized in that: A sliding ring (20) is slidably mounted on the inner side of the outer wall of the kettle body (1); the inner ring of the sliding ring (20) is bolted with a plurality of fixing seats (21); the fixing seats (21) correspond to the interception plate (9); a pair of scrapers (22) are bolted to the side of the fixing seats (21) away from the outer wall of the kettle body (1); the two scrapers (22) are respectively located on both sides of the interception plate (9); a plurality of inclined convex strips (23) are fixedly connected to the adjacent sides of the two scrapers (22); the inclined convex strips (23) are capable of slidingly contacting the interception plate (9).

6. An ammonium rhenate extraction mechanism according to claim 5, characterized in that: A screw (24) is rotatably mounted on the outer wall of the inner tank (2); the top end of the screw (24) rotatably penetrates the top wall of the kettle body (1); a slider (25) is fixedly connected to the inner ring of the sliding ring (20); the slider (25) is threadedly matched with the screw (24); a No. 3 motor (26) is fixedly connected to the outer wall of the kettle body (1) on one side close to the screw (24); the outer ring of the output shaft of the No. 3 motor (26) and the outer ring of the top end of the screw (24) are both fixedly connected to a No. 2 synchronous wheel (27); the outer rings of the two No. 2 synchronous wheels (27) are sleeved with a No. 2 synchronous belt (28).

7. The ammonium rhenate extraction mechanism according to claim 1, characterized in that: A cooling cylinder (29) is fixedly connected to the top surface of the interior of the kettle body (1); the cooling cylinder (29) is sleeved on the outer ring of the No. 1 rotating rod (4); a partition ring plate (30) is fixedly connected to the interior of the cooling cylinder (29); the partition ring plate (30) divides the cooling cylinder (29) into an inner cavity and an outer cavity; a liquid inlet pipe is connected to the top of the outer cavity of the cooling cylinder (29), and the liquid inlet pipe passes through the top of the kettle body (1); a liquid outlet pipe is connected to the top of the inner cavity of the cooling cylinder (29), and the liquid outlet pipe passes through the top of the kettle body (1); the liquid inlet pipe and the liquid outlet pipe are connected to a liquid storage tank filled with cooling liquid; a plurality of connecting grooves (31) are arranged around the bottom of the partition ring plate (30).

8. An ammonium rhenate extraction mechanism according to claim 7, characterized in that: A plurality of spiral strips (32) are arranged around the outer cavity of the cooling cylinder (29); the outer ring of the spiral strips (32) contacts the inner wall of the cooling cylinder (29); the outer ring of the spiral strips (32) contacts the outer wall of the separation ring plate (30); the top and bottom ends of the plurality of spiral strips (32) are fixedly connected to an annular plate (33); a plurality of diversion holes (34) are arranged around the annular plate (33); the diversion hole (34) is located between two of the spiral strips (32).

9. The ammonium rhenate extraction mechanism according to claim 1, characterized in that: A liquid inlet head (35) is fixedly connected to the top surface of the inner wall of the kettle body (1); an inclined water outlet is provided on one side of the bottom of the liquid inlet head (35); the top pipe of the liquid inlet head (35) passes through the top wall of the kettle body (1); a liquid extraction pipe (36) is provided on the side of the top wall of the kettle body (1) away from the liquid inlet head (35); a filter head is provided at the bottom of the liquid extraction pipe (36); a cleaning port (37) is provided at the bottom end of the kettle body (1); a discharge port (38) is provided on the bottom side of the kettle body (1); the discharge port (38) is connected to the bottom of the collecting chamber (3); and valves are provided on both the cleaning port (37) and the discharge port (38).

10. An ammonium rhenate extraction method, characterized in that: The extraction method adopts an ammonium rhenate extraction mechanism as described in any one of claims 1 to 9, and the extraction method comprises the following steps: S1: using hydrochloric acid to extract rhenium from the organic phase of the rhenium-containing extract, then introducing chlorine gas into the solution, then adding saturated ammonium chloride solution and stirring, filtering to obtain a precipitate; finally, washing with ammonium hydrochloric acid and ethanol solution to obtain ammonium rhenate powder; S2: mixing ammonium rhenate with deionized water, heating to dissolve, and adjusting the pH value to obtain an ammonium rhenate solution; S3: The ammonium rhenate solution is transported to the interior of the kettle body (1), and at the same time, the first motor (5) drives the first rotating rod (4) and the paddle (6) to rotate, so that the ammonium rhenate solution rotates inside the kettle body (1); S4: At the same time, the cooling liquid is injected into the outer cavity of the cooling cylinder (29), and the cooling liquid is guided by the spiral strip plate (32), forming a plurality of rotating water flows in the outer cavity of the cooling cylinder (29). Then, the cooling liquid flows into the inner cavity of the cooling cylinder (29) through the connecting groove (31), and finally, is discharged from the kettle (1); the ammonium rhenate solution in the kettle (1) is cooled, so that ammonium rhenate crystals are precipitated in the ammonium rhenate solution; S5: the rotating liquid in the kettle (1) drives the ammonium rhenate crystals to pass through the plurality of interception plates (9), so that the ammonium rhenate crystals adhere to the surfaces of the interception plates (9); S6: Afterwards, the partition plate (8) is controlled to rotate and turn over, driving the interception plate (9) with the ammonium rhenate crystals attached thereto to rotate into the interior of the collecting chamber (3), and the interception plate (9) located inside the collecting chamber (3) rotates into the ammonium rhenate solution inside the kettle body (1); S7: driving the sliding ring (20) to slide downward, driving the scraper (22) to push and clean the two sides of the interception plate (9), pushing the attached ammonium rhenate crystals to the bottom of the collection chamber (3), and then discharging them from the discharge port (38); S8: Finally, the ammonium rhenate crystals are dried to obtain high-purity ammonium rhenate.

Images