Lead sulfate waste desulfurization device

Abstract

The invention discloses a lead sulfate waste desulfurization device, and particularly relates to the technical field of waste lead-acid battery recycling, the lead sulfate waste desulfurization device comprises a support, an outer cylinder is rotatably mounted on the support, a feeding port is formed in the top of the outer cylinder, an inner cylinder is fixedly mounted in the middle of the outer cylinder, and a circulating grinding device is mounted in the outer cylinder; the circulating grinding device comprises a circulating device, a first-stage grinding device, a second-stage grinding device and a first driving device. According to the lead sulfate waste desulfurization device, the circulating grinding device is arranged to drive lead sulfate to circularly grind, so that the surface of the lead sulfate is updated in time, smooth desulfurization reaction is guaranteed, the lead sulfate in lead plaster acts with a desulfurizing agent in time, the desulfurization efficiency is obviously improved, and the service life of the desulfurization device is prolonged. Meanwhile, the calcium sulfate generated by the desulfurization device can be used as a production raw material of cement, and the obtained sodium carbonate can be repeatedly utilized, so that the desulfurization cost of the lead sulfate waste is greatly reduced, and the pollution to the environment is effectively reduced.

Description

Technical Field

[0001] The invention relates to the technical field of waste lead-acid battery recovery, in particular to a lead sulfate waste desulfurization device. Background Art

[0002] The main components of lead-acid batteries include: anode plate (lead peroxide PbO2), cathode plate (spongy lead Pb), electrolyte (dilute sulfuric acid). It is a chemical power source widely used in the world. It has the advantages of stable voltage, safety and reliability, low price, wide application range, and abundant raw materials. It is the battery with the largest output and the widest application among all types of batteries in the world. The main components of lead-acid batteries after reaching the end of their service life will be converted into: PbSO4 (50-60%), PbO2 (30-35%), PbO (10-15%) and Sb (0.2-0.7%). Among them, lead paste (or sulfuric acid) containing sulfuric acid compounds and heavy metal substances such as lead, antimony, arsenic, and zinc will have adverse effects on the environment and human health. Therefore, it is of great significance to carry out the recycling of waste lead-acid batteries.

[0003] The traditional pyrometallurgical process for recovering lead from waste lead-acid batteries is to crush the battery plates and mix them with coke, and then directly roast them at a high temperature of more than 1350°C to reduce lead sulfate to metallic lead. However, toxic and harmful fumes such as SO2 and lead dust will be produced during the whole process, causing serious damage to the ecological environment. Han Zhao et al. proposed in the patent "A method for desulfurization of lead paste of waste lead-acid batteries" that waste lead-acid battery lead paste, desulfurizer and co-solvent should be mixed in a certain proportion, and then roasted at a high temperature of 100-1000°C for 5-240 minutes for desulfurization. The disadvantage of this method is that the reaction requires a higher temperature, a longer reaction time, and the subsequent treatment is also more complicated.

[0004] my country's clean production standard for lead recovery of waste lead-acid batteries (HJ510-2009) recommends the use of a clean production process, the core content of which is: lead sulfate in lead paste is converted into lead carbonate and sodium sulfate under the action of sodium carbonate, the reaction mixture is filtered, the solid enters the smelting link to recover lead, the sodium sulfate solution enters purification and crystallization to obtain the sodium sulfate product, this process transfers sulfur from the solid to the liquid before the sulfur-containing solid enters the thermal decomposition, so it is also called lead paste pre-desulfurization. The lead carbonate obtained by this method has a very low decomposition temperature, which can greatly save the energy consumption of the subsequent decomposition furnace. At the same time, the solid material entering the smelting furnace does not contain sulfur, and the flue gas produced does not contain or contains very little sulfur dioxide. This process has good energy-saving and economic benefits.

[0005] The desulfurization reaction is as follows: PbSO4+Na2CO3→PbCO3+Na2SO4. In this reaction, KspPbSO4=1.6*10-8, KspPbCO3=7.4*10-14. The difference between the two is 6 orders of magnitude, which is very easy to carry out thermodynamically.

[0006] In the above-mentioned pre-desulfurization process, the PbSO4 particles react with the Na2CO3 solution, and the generated PbCO3 is wrapped on the surface of the PbSO4 particles. The PbCO3 shell wrapped on the outer surface of the PbSO4 must be peeled off in time to expose the PbSO4 to the Na2CO3 solution, so that the pre-desulfurization reaction can occur. In order to improve the efficiency of the reaction, the kettle reactor with stirring function is currently used at home and abroad. This equipment realizes the renewal of the surface of the lead sulfate particles through the hydraulic shearing effect generated by stirring, which has limited capacity, slow reaction, and unstable desulfurization effect. Summary of the invention

[0007] The main purpose of the present invention is to provide a lead sulfate waste desulfurization device, which can effectively solve the problems in the background technology.

[0008] To achieve the above object, the technical solution adopted by the present invention is:

[0009] A lead sulfate waste desulfurization device comprises a bracket, an outer cylinder is rotatably mounted on the bracket, a feed port is provided at the top of the outer cylinder, an inner cylinder is fixedly mounted in the middle of the outer cylinder, a circulation grinding device is mounted in the outer cylinder, the circulation grinding device comprises a circulation device, a primary grinding device, a secondary grinding device and a first driving device, the circulation device rotates outside the inner cylinder, a working chamber is provided in the middle of the inner cylinder, a return port is provided at the top of the working chamber, a discharge port is provided on the bottom wall of the working chamber, the primary grinding device is mounted in the middle of the working chamber, the secondary grinding device is mounted at the bottom of the working chamber, the first driving device is fixedly mounted at the front end of the outer cylinder, and is used to drive the circulation device, the primary grinding device and the secondary grinding device to work, a second driving device for driving the outer cylinder to rotate is fixedly mounted at the front end of the bracket, an arc plate located at the lower side of the outer surface of the outer cylinder is mounted on the bracket, a filter box is fixedly mounted at the bottom of the arc plate, a discharge pipe is fixedly mounted at the bottom of the filter box, a collecting box is fixedly mounted at the bottom of the discharge pipe, a circulation pump is mounted on one side of the collecting box, and a connecting pipe is connected to the circulation pump.

[0010] Preferably, the bracket includes a first fixed ring and a second fixed ring, and the outer cylinder rotates in the first fixed ring and the second fixed ring. The first fixed ring and the second fixed ring are distributed on the front and back sides of the outer surface of the outer cylinder. Support rods are fixedly installed on the left and right sides of the lower surface of the first fixed ring and the second fixed ring, and a plurality of connecting rods are fixedly installed between the two support rods on the same side.

[0011] Preferably, the arc plate is fixedly installed between the first fixing ring and the second fixing ring, a collecting groove is opened on the inner wall of the arc plate, the middle part of the bottom wall of the collecting groove is connected with the inside of the filter box, a collecting funnel is fixedly installed on the upper part of the inner wall of the filter box, a filter drawer is pulled out in the middle part of the rear end of the filter box, the filter drawer is located directly below the collecting funnel, and a filter hole is opened at the bottom of the collecting funnel.

[0012] Preferably, the arc plate is a regular C-shaped arc circle, and the opening of the arc plate is arranged directly above, and the angles between the two ends of the opening of the arc plate and the center of the middle circle are 45-60 degrees.

[0013] Preferably, the circulation device includes two ring plates and a first driving rod, the two ring plates are both sleeved on the outside of the inner cylinder, and a first sealing ring is fixedly installed on the outer wall of the ring plate, the first sealing ring is sealingly and rotatably connected to the inner wall of the outer cylinder, a second sealing ring is fixedly installed on the inner wall of the ring plate, the second sealing ring is sealingly and rotatably connected to the outer surface of the inner cylinder, and a plurality of scraper plates are fixedly installed between the two ring plates, an inner gear ring is fixedly installed in the middle of the front wall of the ring plate located on the front side, the first driving rod is rotatably installed on the upper part of the front end of the outer cylinder, the inner end of the first driving rod extends through the outer cylinder and is fixedly installed with a first gear, the first gear is meshed with the inner gear ring, and the first driving rod is connected to the first driving device.

[0014] Preferably, the primary grinding device includes two grinding blocks and a grinding roller, movable grooves are provided in the middle of the inner walls on both sides of the working chamber, the grinding roller is rotatably installed in the middle of the working chamber, a second driving rod is fixedly installed at one end of the grinding roller, the second driving rod rotatably passes through the inner cylinder and the outer cylinder and is connected to the first driving device, two grinding blocks are arranged on both sides of the grinding roller, the end of the grinding block away from the grinding block slides in the movable groove, and a hydraulic push rod is fixedly installed in the middle of the inner wall of the movable groove away from the working chamber, the output end of the hydraulic push rod is fixedly connected to the grinding block on the same side, sliding grooves are provided on the upper and lower walls of the movable groove, a sealing baffle is slidably installed in the sliding groove, a spring is fixedly installed between the end of the sealing baffle away from the grinding block and the inner wall of the sliding groove, and the bottom of the sealing baffle is in close contact with the surface of the grinding block.

[0015] Preferably, the secondary grinding device includes a first rotating rod and a fourth driving rod, the two ends of the first rotating rod rotate at the lower part of the inner wall of the working chamber, a grinding ball is fixedly installed in the middle of the outer surface of the first rotating rod, the grinding ball cooperates with the bottom wall of the working chamber, an equipment groove is opened inside the inner cylinder, one end of the first rotating rod extends into the equipment groove and is fixedly installed with a first bevel gear, the fourth driving rod penetrates and is rotatably installed at the lower part of the front end of the outer cylinder, the inner end of the fourth driving rod extends into the equipment groove and is fixedly installed with a second bevel gear, and the second bevel gear is meshed with the first bevel gear.

[0016] Preferably, the first driving device includes a first motor, a third sprocket, a first chain, a fourth sprocket and a second chain, the first motor is fixedly mounted on the front end of the outer cylinder, a linkage rod is fixedly mounted on the output end of the first motor, a first sprocket and a second sprocket are fixedly mounted on the outer surface of the linkage rod, an end of the linkage rod away from the first motor is fixedly connected to the second driving rod, the third sprocket is fixedly mounted on the outer end of the first driving rod, the second sprocket drives the third sprocket to rotate via the first chain, the fourth sprocket is fixedly mounted on the outer end of the fourth driving rod, and the first sprocket drives the fourth sprocket to rotate via the second chain.

[0017] Preferably, the second driving device includes a second motor, a mounting plate, a second gear and an outer gear ring, the outer gear ring is fixedly mounted on the front end of the outer cylinder, the mounting plate is fixedly mounted on the middle left side of the front end of the first fixed ring, the second motor is fixedly mounted on the mounting plate, and a second gear is fixedly mounted on the output end of the second motor, and the second gear is meshed with the outer gear ring.

[0018] Preferably, an arc groove is formed on the upper part of the ends of the first fixing ring and the second fixing ring close to each other, and arc shielding plates are slidably installed in the arc grooves on the front and rear sides, and a handle is fixedly installed on the upper end of the arc shielding plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The invention discloses a lead sulfate waste desulfurization device. The device is provided with a circulating grinding device, which drives the lead sulfate to be cyclically ground, crushes and removes the newly generated lead carbonate wrapped on the surface of the lead sulfate, so that the surface of the lead sulfate is updated in time, and the desulfurization reaction is ensured to proceed smoothly. The lead sulfate in the lead paste can react with the desulfurizer in time, and the reaction is rapid. The sulfur content of the terminal material is low, and the desulfurization efficiency is significantly improved. The desulfurization rate reaches more than 90%. At the same time, the calcium sulfate generated by the desulfurization device can be used as a raw material for cement production, and the obtained sodium carbonate can be repeatedly used, which greatly reduces the cost of desulfurization of the lead sulfate waste, effectively reduces the pollution to the environment, effectively improves the production efficiency, and completely achieves the purpose of desulfurization. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 It is a rear view schematic diagram of the overall structure of the present invention;

[0023] Figure 3 is a first cross-sectional view of the overall structure of the present invention;

[0024] Figure 4 is a second cross-sectional view of the overall structure of the present invention;

[0025] Figure 5 The third cross-sectional view of the overall structure of the present invention

[0026] Figure 6 It is a schematic diagram of the connection between the bracket and the partial structure of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the circulation device of the present invention;

[0028] Figure 8 For the present invention Figure 3 A magnified schematic diagram of center A.

[0029] In the figure: 1. bracket; 2. outer cylinder; 3. inner cylinder; 4. circulation device; 5. primary grinding device; 6. secondary grinding device; 7. first driving device; 8. second driving device; 9. arc plate; 10. filter box; 11. filter drawer; 12. discharge pipe; 13. collecting funnel; 14. arc shielding plate; 15. collecting box; 16. circulation pump; 17. connecting pipe; 101. first fixed ring; 102. second fixed ring; 103. arc groove; 104. support rod; 105. connecting rod; 21. feed port; 31. working chamber; 32. return port; 33. discharge port; 34. movable groove; 35. equipment groove; 36. slide groove; 41. ring plate; 42. scraper Plate; 43, first sealing ring; 44, second sealing ring; 45, inner gear ring; 46, first gear; 47, first drive rod; 51, hydraulic push rod; 52, grinding block; 54, grinding roller; 55, second drive rod; 56, spring; 57, sealing baffle; 61, first rotating rod; 62, grinding ball; 63, first bevel gear; 64, second bevel gear; 65, fourth drive rod; 71, first motor; 72, linkage rod; 73, first sprocket; 74, second sprocket; 75, third sprocket; 76, first chain; 77, fourth sprocket; 78, second chain; 81, second motor; 82, mounting plate; 83, second gear; 84, outer gear ring; 91, collecting tank. DETAILED DESCRIPTION

[0030] 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.

[0031] Embodiment 1

[0032] like Figure 1-3As shown, a lead sulfate waste desulfurization device comprises a bracket 1, an outer cylinder 2 is rotatably mounted on the bracket 1, a feed port 21 is provided at the top of the outer cylinder 2, an inner cylinder 3 is fixedly mounted in the middle of the outer cylinder 2, a circulating grinding device is installed in the outer cylinder 2, the circulating grinding device comprises a circulating device 4, a primary grinding device 5, a secondary grinding device 6 and a first driving device 7, the circulating device 4 rotates outside the inner cylinder 3, a working chamber 31 is provided in the middle of the inner cylinder 3, a return port 32 is provided at the top of the working chamber 31, the return port 32 is located below the feed port 21, a discharge port 33 is provided on the bottom wall of the working chamber 31, the primary grinding device 5 is installed in the middle of the working chamber 31, and the secondary grinding device 6 is installed at the bottom of the working chamber 31. The bottom of the working chamber 31, the first driving device 7 is fixedly installed at the front end of the outer cylinder 2, and is used to drive the circulation device 4, the first grinding device 5 and the second grinding device 6 to work. The front end of the bracket 1 is fixedly installed with a second driving device 8 that drives the outer cylinder 2 to rotate, and the bracket 1 is installed with an arc plate 9 located on the lower side of the outer surface of the outer cylinder 2, and a filter box 10 is fixedly installed at the bottom of the arc plate 9. A collecting groove 91 is opened on the inner wall of the arc plate 9, and the middle part of the bottom wall of the collecting groove 91 is connected with the inside of the filter box 10, and a feed pipe 12 is fixedly installed at the bottom of the filter box 10, and a collecting box 15 is fixedly installed at the bottom of the feed pipe 12. A circulating pump 16 is installed on one side of the collecting box 15, and a connecting pipe 17 is connected to the circulating pump 16.

[0033] When in use, the outer cylinder 2 is driven to rotate by the second driving device 8, and the feed port 21 is rotated to the top, and the lead sulfate waste and the sodium carbonate solution are added into the outer cylinder 2 through the feed port 21, and enter the return port 32 below from the feed port 21 and then enter the working chamber 31, and the primary grinding device 5 grinds the lead sulfate waste, and the ground waste enters the secondary grinding device 6 for secondary grinding, and then is transported to the inner wall of the outer cylinder 2 through the discharge port 33, and the ground lead sulfate waste can be fully contacted with the sodium carbonate solution, and then the circulation device 4 rotates, driving the lead sulfate waste and the sodium carbonate solution to move continuously from bottom to top, and then enter the working chamber 31 from the return port 32 for grinding, and repeated cycle grinding can make the surface and The outer cylinder 2 is updated in time, so that the lead sulfate reacts with the sodium carbonate in time to generate sodium sulfate and lead carbonate solids. Then the second driving device 8 drives the outer cylinder 2 to rotate, and the feed port 21 is turned downward, and the lead carbonate solids and the sodium sulfate solution are poured into the filter box 10 for filtration. Then the outer cylinder 2 is turned right, and the filtered sodium sulfate solution is collected in the collection box 15. Then the sodium sulfate solution is re-transported to the outer cylinder 2 through the circulation 16 and the connecting pipe 17, and then calcium hydroxide is added to the outer cylinder 2 from the feed port 21. The calcium hydroxide and sodium sulfate react to generate calcium sulfate and sodium hydroxide, and then they are re-filtered to obtain calcium sulfate and sodium hydroxide solutions. The calcium sulfate is sold to the cement plant, and the sodium hydroxide solution is introduced into the carbon dioxide to produce the sodium carbonate solution for the next lead sulfate desulfurization work.

[0034] The bracket 1 includes a first fixing ring 101 and a second fixing ring 102. The outer cylinder 2 rotates in the first fixing ring 101 and the second fixing ring 102. The first fixing ring 101 and the second fixing ring 102 are distributed on the front and back sides of the outer surface of the outer cylinder 2. Support rods 104 are fixedly installed on the left and right sides of the lower surfaces of the first fixing ring 101 and the second fixing ring 102, and multiple connecting rods 105 are fixedly installed between the two support rods 104 on the same side.

[0035] An arc-shaped groove 103 is commonly formed at the upper part of one end of the first fixing ring 101 and the second fixing ring 102 that are close to each other, and an arc-shaped shielding plate 14 is slidably installed in the arc-shaped grooves 103 on the front and rear sides, and a handle is fixedly installed on the upper end of the arc-shaped shielding plate 14. The arc-shaped shielding plate 14 can block the feed port 21 to prevent external air from passing through the feed port 21 and reacting with the sodium carbonate solution inside the outer cylinder 2, thereby reducing the concentration of sodium carbonate and affecting the desulfurization effect.

[0036] The second driving device 8 includes a second motor 81, a mounting plate 82, a second gear 83 and an outer gear ring 84. The outer gear ring 84 is fixedly mounted on the front end of the outer cylinder 2. The mounting plate 82 is fixedly mounted on the middle left part of the front end of the first fixing ring 101. The second motor 81 is fixedly mounted on the mounting plate 82. The second gear 83 is fixedly mounted on the output end of the second motor 81. The second gear 83 is meshed with the outer gear ring 84. The second motor 81 drives the second gear 83 to rotate, the second gear 83 drives the outer gear ring 84 to rotate, and the outer gear ring 84 drives the outer cylinder 2 to rotate, thereby rotating the feed port 21 from top to bottom to pour the solution in the outer cylinder 2 into the filter box 10.

[0037] The arc plate 9 is fixedly installed between the first fixing ring 101 and the second fixing ring 102. A collecting funnel 13 is fixedly installed on the upper inner wall of the filter box 10. A filter drawer 11 is pull-out and arranged in the middle of the rear end of the filter box 10. The filter drawer 11 is located directly below the collecting funnel 13. A filter hole is opened at the bottom of the collecting funnel 13, and the solution produced by desulfurization is separated into solid and liquid through the filter hole.

[0038] The arc plate 9 is a regular C-shaped arc circle, and the opening of the arc plate 9 is set at the top, and the angle between the two ends of the opening of the arc plate 9 and the center of the middle circle is 45-60 degrees. When the outer cylinder 2 rotates to the feed port 21 and enters the arc groove 103, it can prevent the inside of the outer cylinder 2 from being easily splashed out from the feed port 21.

[0039] Embodiment 2

[0040] See also Figure 3-8 As shown, in order to allow lead sulfate to continuously react with the desulfurizer and avoid lead carbonate being wrapped around the outside of the lead sulfate and affecting the desulfurization work, a circulating grinding device is provided to continuously grind the lead sulfate. The grinding action can timely update the surface of the lead sulfate, so that the lead sulfate can react with the desulfurizer in time, the reaction is rapid, and the sulfur content of the final material is low, which significantly improves the desulfurization efficiency. The desulfurization rate reaches more than %, and the production capacity of the system is also improved.

[0041] The circulation device 4 includes two ring plates 41 and a first driving rod 47. The two ring plates 41 are both sleeved on the outside of the inner cylinder 3, and a first sealing ring 43 is fixedly installed on the outer wall of the ring plate 41. The first sealing ring 43 is sealingly and rotatably connected to the inner wall of the outer cylinder 2. A second sealing ring 44 is fixedly installed on the inner wall of the ring plate 41. The second sealing ring 44 is sealingly and rotatably connected to the outer surface of the inner cylinder 3, and a plurality of scraper plates 42 are fixedly installed between the two ring plates 41. An inner gear ring 45 is fixedly installed in the middle of the front wall of the ring plate 41 located on the front side. The first driving rod 47 is rotatably installed on the upper front end of the outer cylinder 2. The inner end of the first driving rod 47 extends through the outer cylinder 2 and is fixedly installed with a first gear 46. The first gear 46 is meshed with the inner gear ring 45, and the first driving rod 47 is connected to the first driving device 7.

[0042] The primary grinding device 5 includes two grinding blocks 52 and a grinding roller 54. A movable groove 34 is provided in the middle of the inner walls on both sides of the working chamber 31. The grinding roller 54 is rotatably installed in the middle of the working chamber 31. A second driving rod 55 is fixedly installed at one end of the grinding roller 54. The second driving rod 55 rotates through the inner cylinder 3 and the outer cylinder 2 and is connected to the first driving device 7. The two grinding blocks 52 are arranged on both sides of the grinding roller 54. The end of the grinding block 52 away from the grinding block 52 slides in the movable groove 34, and a hydraulic push rod 51 is fixedly installed in the middle of the inner wall of the movable groove 34 away from the working chamber 31. The output end of the hydraulic push rod 51 is fixedly connected to the grinding block 52 on the same side. The upper and lower walls of the movable groove 34 are provided with a slide groove 36. A sealing baffle 57 is slidably installed in the slide groove 36. A spring 56 is fixedly installed between the end of the sealing baffle 57 away from the grinding block 52 and the inner wall of the slide groove 36. The bottom of the sealing baffle 57 is in close contact with the surface of the grinding block 52.

[0043] The secondary grinding device 6 includes a first rotating rod 61 and a fourth driving rod 65. The two ends of the first rotating rod 61 rotate at the lower part of the inner wall of the working chamber 31. A grinding ball 62 is fixedly installed in the middle of the outer surface of the first rotating rod 61. The grinding ball 62 cooperates with the bottom wall of the working chamber 31. An equipment groove 35 is opened inside the inner cylinder 3. One end of the first rotating rod 61 extends into the equipment groove 35 and is fixedly installed with a first bevel gear 63. The fourth driving rod 65 is rotatably installed at the lower part of the front end of the outer cylinder 2. The inner end of the fourth driving rod 65 extends into the equipment groove 35 and is fixedly installed with a second bevel gear 64. The second bevel gear 64 is meshed with the first bevel gear 63.

[0044] The first driving device 7 includes a first motor 71, a third sprocket 75, a first chain 76, a fourth sprocket 77 and a second chain 78. The first motor 71 is fixedly mounted on the front end of the outer cylinder 2. A linkage rod 72 is fixedly mounted on the output end of the first motor 71. A first sprocket 73 and a second sprocket 74 are fixedly mounted on the outer surface of the linkage rod 72. One end of the linkage rod 72 away from the first motor 71 is fixedly connected to the second driving rod 55. The third sprocket 75 is fixedly mounted on the outer end of the first driving rod 47. The second sprocket 74 drives the third sprocket 75 to rotate through the first chain 76. The fourth sprocket 77 is fixedly mounted on the outer end of the fourth driving rod 65. The first sprocket 73 drives the fourth sprocket 77 to rotate through the second chain 78.

[0045] When in use, the first motor 71 drives the linkage rod 72 to rotate, the linkage rod 72 drives the first sprocket 73 and the second sprocket 74 to rotate, the second sprocket 74 drives the third sprocket 75 to rotate through the first chain 76, the third sprocket 75 drives the first driving rod 47 to rotate, the first driving rod 47 drives the first gear 46 to rotate, the first gear 46 drives the inner gear ring 45 to rotate, the inner gear ring 45 drives the ring plate 41 to rotate, the ring plate 41 drives the partition plate to rotate, the partition plate drives the lead sulfate and sodium carbonate solution to rotate in the outer cylinder 2, and then transported from the return material to the working chamber 31, the linkage rod 72 rotates while driving the second driving rod 55 to rotate, the second driving rod 55 drives the grinding roller 54 to rotate, the grinding roller 54 grinds the lead sulfate so that the surface of the lead sulfate is timely The lead sulfate is updated, and then the first sprocket 73 drives the fourth sprocket 77 to rotate through the second chain 78, the fourth sprocket 77 drives the fourth driving rod 65 to rotate, the fourth driving rod 65 drives the second bevel gear 64 to rotate, the second bevel gear 64 drives the first bevel gear 63 to rotate, the first bevel gear 63 drives the first rotating rod 61 to rotate, the first rotating rod 61 drives the grinding ball 62 to rotate, and the lead sulfate is secondary ground. The ground lead sulfate is transported to the bottom wall of the outer cylinder 2 through the discharge port 33, and the circulating grinding device drives the lead sulfate to grind cyclically, crushing and removing the newly generated lead carbonate wrapped on the surface of the lead sulfate, ensuring the smooth progress of the desulfurization reaction, improving the desulfurization efficiency, and making the surface of the lead sulfate updated in time, so that the lead sulfate can react with the desulfurizer in time.

[0046] The working principle of the present invention is as follows: when in use, the lead sulfate waste and the sodium carbonate solution are added into the outer cylinder 2 through the feed port 21, and enter the return port 32 below from the feed port 21 and then enter the working chamber 31. The primary grinding device 5 grinds the lead sulfate waste, and the ground waste enters the secondary grinding device 6 for secondary grinding, and then is transported to the inner wall of the outer cylinder 2 through the discharge port 33. The ground lead sulfate waste can be fully contacted with the sodium carbonate solution, and then the circulation device 4 rotates to drive the lead sulfate waste and the sodium carbonate solution to move continuously from bottom to top, and then enter the working chamber 31 from the return port 32 for grinding. Repeated cyclic grinding can timely update the surface of the lead sulfate, so that the lead sulfate Lead reacts with sodium carbonate in time to generate sodium sulfate and lead carbonate, and then the second driving device 8 drives the outer cylinder 2 to rotate, drives the feed port 21 to flip downward, pours the lead carbonate solid and sodium sulfate solution into the filter box 10 for filtration, and then the outer cylinder 2 is turned upright, and the filtered sodium sulfate solution is collected in the collection box 15, and then the sodium sulfate solution is re-transported to the outer cylinder 2 through the circulation pump 16 and the connecting pipe 17, and then calcium hydroxide is added to the outer cylinder 2 from the feed port 21, and the calcium hydroxide and sodium sulfate react to generate calcium sulfate and sodium hydroxide, which are then re-filtered to obtain calcium sulfate and sodium hydroxide solution, and the calcium sulfate is sold to the cement plant, and carbon dioxide is introduced into the sodium hydroxide solution to produce sodium carbonate solution for the next lead sulfate desulfurization work.

[0047] The above shows and describes the basic principles and main features of the present invention and the 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 to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A lead sulfate waste desulfurization device, characterized in that: The invention comprises a support (1), an outer cylinder (2) is rotatably mounted on the support (1), a feed port (21) is provided at the top of the outer cylinder (2), an inner cylinder (3) is fixedly mounted in the middle of the outer cylinder (2), a circulating grinding device is installed in the outer cylinder (2), the circulating grinding device comprises a circulating device (4), a primary grinding device (5), a secondary grinding device (6) and a first driving device (7), the circulating device (4) rotates outside the inner cylinder (3), a working chamber (31) is provided in the middle of the inner cylinder (3), a return port (32) is provided at the top of the working chamber (31), a discharge port (33) is provided on the bottom wall of the working chamber (31), the primary grinding device (5) is installed in the middle of the working chamber (31), the secondary grinding device (5) is installed in the middle of the working chamber (31), and the secondary grinding device (6) is installed in the middle of the working chamber (31). The support (6) is mounted at the bottom of the working chamber (31); the first driving device (7) is fixedly mounted at the front end of the outer cylinder (2) and is used to drive the circulation device (4), the first grinding device (5) and the second grinding device (6) to work; a second driving device (8) is fixedly mounted at the front end of the support (1) for driving the outer cylinder (2) to rotate; an arc-shaped plate (9) located at the lower side of the outer surface of the outer cylinder (2) is mounted on the support (1); a filter box (10) is fixedly mounted at the bottom of the arc-shaped plate (9); a feed pipe (12) is fixedly mounted at the bottom of the filter box (10); a collection box (15) is fixedly mounted at the bottom of the feed pipe; a circulation pump (16) is mounted on one side of the collection box (15); and a connecting pipe (17) is connected to the circulation pump (16).

2. A lead sulfate waste desulfurization device according to claim 1, characterized in that: The bracket (1) comprises a first fixing ring (101) and a second fixing ring (102), the outer cylinder (2) rotates inside the first fixing ring (101) and the second fixing ring (102), the first fixing ring (101) and the second fixing ring (102) are distributed on the front and rear sides of the outer surface of the outer cylinder (2), support rods (104) are fixedly installed on the left and right sides of the lower surfaces of the first fixing ring (101) and the second fixing ring (102), and a plurality of connecting rods (105) are fixedly installed between the two support rods (104) on the same side.

3. A lead sulfate waste desulfurization device according to claim 2, characterized in that: The arc-shaped plate (9) is fixedly mounted between the first fixing ring (101) and the second fixing ring (102); a collecting groove (91) is provided on the inner wall of the arc-shaped plate (9); the middle part of the bottom wall of the collecting groove (91) is communicated with the interior of the filter box (10); a collecting funnel (13) is fixedly mounted on the upper part of the inner wall of the filter box (10); a filter drawer (11) is provided in the middle part of the rear end of the filter box (10); the filter drawer (11) is located directly below the collecting funnel (13); and a filter hole is provided at the bottom of the collecting funnel (13).

4. A lead sulfate waste desulfurization device according to claim 3, characterized in that: The arc plate (9) is a C-shaped regular arc circle, and the opening of the arc plate (9) is arranged directly above, and the angles between the two ends of the opening of the arc plate (9) and the center of the middle circle are 45-60 degrees.

5. A lead sulfate waste desulfurization device according to claim 1, characterized in that: The circulation device (4) comprises two ring plates (41) and a first driving rod (47). The two ring plates (41) are both sleeved outside the inner cylinder (3), and a first sealing ring (43) is fixedly mounted on the outer wall of the ring plate (41). The first sealing ring (43) is rotatably connected to the inner wall of the outer cylinder (2). A second sealing ring (44) is fixedly mounted on the inner wall of the ring plate (41). The second sealing ring (44) is rotatably connected to the outer surface of the inner cylinder (3). The two ring plates (41) are sleeved outside the inner cylinder (3), and a first sealing ring (43) is fixedly mounted on the outer wall of the ring plate (41). A plurality of scraper plates (42) are fixedly mounted between the ring plates (41); an inner gear ring (45) is fixedly mounted on the middle of the front wall of the ring plate (41) located at the front side; the first drive rod (47) is rotatably mounted on the upper front end of the outer cylinder (2); the inner end of the first drive rod (47) extends through the outer cylinder (2) and is fixedly mounted with a first gear (46); the first gear (46) is meshed with the inner gear ring (45); and the first drive rod (47) is connected to the first drive device (7).

6. A lead sulfate waste desulfurization device according to claim 5, characterized in that: The primary grinding device (5) comprises two grinding blocks (52) and a grinding roller (54). A movable groove (34) is provided in the middle of the inner walls on both sides of the working chamber (31). The grinding roller (54) is rotatably mounted in the middle of the working chamber (31). A second driving rod (55) is fixedly mounted on one end of the grinding roller (54). The second driving rod (55) rotatably penetrates the inner cylinder (3) and the outer cylinder (2) and is connected to the first driving device (7). The two grinding blocks (52) are arranged on both sides of the grinding roller (54). One end of the grinding block (52) away from the grinding block (52) is A hydraulic push rod (51) is fixedly installed in the middle of the inner wall of the movable groove (34) away from the working chamber (31), and the output end of the hydraulic push rod (51) is fixedly connected to the grinding block (52) on the same side. The upper and lower walls of the movable groove (34) are both provided with sliding grooves (36), and a sealing baffle (57) is slidingly installed in the sliding groove (36). A spring (56) is fixedly installed between one end of the sealing baffle (57) away from the grinding block (52) and the inner wall of the sliding groove (36), and the bottom of the sealing baffle (57) is in close contact with the surface of the grinding block (52).

7. A lead sulfate waste desulfurization device according to claim 6, characterized in that: The secondary grinding device (6) comprises a first rotating rod (61) and a fourth driving rod (65), the two ends of the first rotating rod (61) rotate at the lower part of the inner wall of the working chamber (31), a grinding ball (62) is fixedly installed at the middle part of the outer surface of the first rotating rod (61), and the grinding ball (62) cooperates with the bottom wall of the working chamber (31), an equipment groove (35) is opened inside the inner cylinder (3), one end of the first rotating rod (61) extends through the equipment groove (35) and is fixedly installed with a first bevel gear (63), the fourth driving rod (65) penetrates and is rotatably installed at the lower part of the front end of the outer cylinder (2), the inner end of the fourth driving rod (65) extends into the equipment groove (35) and is fixedly installed with a second bevel gear (64), and the second bevel gear (64) and the first bevel gear (63) are meshed.

8. A lead sulfate waste desulfurization device according to claim 7, characterized in that: The first driving device (7) comprises a first motor (71), a third sprocket (75), a first chain (76), a fourth sprocket (77) and a second chain (78); the first motor (71) is fixedly mounted on the front end of the outer cylinder (2); a linkage rod (72) is fixedly mounted on the output end of the first motor (71); a first sprocket (73) and a second sprocket (74) are fixedly mounted on the outer surface of the linkage rod (72); an end of the linkage rod (72) away from the first motor (71) is fixedly connected to the second driving rod (55); the third sprocket (75) is fixedly mounted on the outer end of the first driving rod (47); the second sprocket (74) drives the third sprocket (75) to rotate via the first chain (76); the fourth sprocket (77) is fixedly mounted on the outer end of the fourth driving rod (65); the first sprocket (73) drives the fourth sprocket (77) to rotate via the second chain (78).

9. A lead sulfate waste desulfurization device according to claim 1, characterized in that: The second driving device (8) comprises a second motor (81), a mounting plate (82), a second gear (83) and an outer gear ring (84); the outer gear ring (84) is fixedly mounted on the front end of the outer cylinder (2); the mounting plate (82) is fixedly mounted on the left middle part of the front end of the first fixed ring (101); the second motor (81) is fixedly mounted on the mounting plate (82); a second gear (83) is fixedly mounted on the output end of the second motor (81); and the second gear (83) is meshed with the outer gear ring (84).

10. A lead sulfate waste desulfurization device according to claim 2, characterized in that: An arc-shaped groove (103) is provided at the upper part of the mutually adjacent ends of the first fixing ring (101) and the second fixing ring (102), and an arc-shaped shielding plate (14) is slidably installed in the arc-shaped grooves (103) on the front and rear sides, and a handle is fixedly installed at the upper end of the arc-shaped shielding plate (14).

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