Acid-based flake graphite purification equipment and method

Abstract

The present invention discloses an acid-based graphite flake purification device and method, which relates to the technical field of graphite purification. The device comprises a bracket, the outer wall of which is fixedly connected to a mixed acid leaching device, the outer wall of which is rotatably connected to a neutralization and washing device, and the outer wall of which is fixedly connected to a medium processing device; heat is generated by the relative rotation of a friction block, a heat conducting block, and a heat conducting strip, thereby assisting the reaction between graphite particles and acid solution; the reaction between graphite particles and acid solution is promoted under the stirring of the heat conducting strip and the acid leaching guide strip; the raised portion of the acid leaching plate continuously contacts the execution strip during rotation, causing the acid leaching plate to vibrate, thereby preventing the mixture from adhering to the inner wall; the graphite particles are uniformly neutralized through primary neutralization and secondary neutralization washing; the low-concentration medium is reused by separately collecting high-concentration medium and low-concentration medium, thereby improving the utilization rate.

Description

Technical Field

[0001] The present invention relates to the technical field of graphite purification, and in particular to an acid-based flake graphite purification device and method. Background Art

[0002] Acid purification is a key process for the deep processing of flake graphite, but in actual application, there are still problems such as low reaction efficiency and easy pollution of equipment. Traditional acid leaching processes mostly rely on static reactions or simple mechanical stirring. The graphite particles are unevenly contacted with the acid solution. Especially when processing high-viscosity mixtures, the particles are prone to agglomeration or sedimentation. During the acid leaching process, the mixture is prone to adhere to the inner wall of the reactor to form a scaling layer, which not only reduces the heat transfer efficiency, but also may hinder the flow of materials. In the neutralization and washing link, traditional processes often use a single wash or a simple step-by-step treatment. The mixing uniformity of the neutralization medium and the residual acid solution is insufficient, resulting in incomplete neutralization in some areas, requiring repeated washing or increased medium dosage. In terms of the recycling of neutralization media, existing technologies mostly mix media of different concentrations or directly discharge low-concentration waste liquids, resulting in low utilization of effective ingredients and increased waste liquid treatment costs. Summary of the Invention

[0003] (1) Technical problems solved

[0004] In view of the deficiencies of the prior art, the present invention adopts the following technical solutions to solve the technical problems: an acid-based flake graphite purification device and method, which generates heat through the relative rotation of a friction block, a heat-conducting block and a heat-conducting strip to assist the reaction of graphite particles and acid solution. Under the stirring of the heat-conducting strip and the acid leaching guide strip, the reaction of the graphite particles and the acid solution is promoted, so that the two react dynamically to achieve a dynamic uniform reaction effect. When the acid leaching plate rotates, its raised part continuously contacts the execution strip. The execution strip vibrates the acid leaching plate under the action of a reset spring to prevent the mixture from sticking to the inner wall. Through the initial neutralization washing and the secondary neutralization washing, the graphite particles are uniformly neutralized. By separately collecting the high-degree medium and the low-degree medium, the low-degree medium is reused to achieve the effect of improving the utilization rate.

[0005] (2) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an acid-based flake graphite purification device, comprising a bracket, an outer wall of the bracket is fixedly connected to a mixed acid leaching device, an outer wall of the mixed acid leaching device is rotatably connected to a neutralization and washing device, and an outer wall of the neutralization and washing device is fixedly connected to a medium processing device;

[0007] Preferably, the mixed acid leaching device includes a mixing device, the outer wall of the mixing device is fixedly connected to the vibration device; the mixing device includes a driving shaft, the outer wall of the driving shaft is fixedly connected to the driving gear, the outer wall of the driving gear is meshed with a planetary gear, the outer wall of the planetary gear is fixedly connected to the acid leaching plate, the inner wall of the acid leaching plate is fixedly connected to the acid leaching guide bar, the outer wall of the driving shaft is fixedly connected to the friction block, the outer wall of the friction block is rotatably connected to the heat conductive block, the outer wall of the heat conductive block is fixedly connected to the rotating heat conductive bar, the outer wall of the heat conductive block is fixedly connected to the outer wall of the bottom of the acid leaching plate, and the outer wall of the bottom of the acid leaching plate is provided with a discharge hole; the vibration device includes a mounting block, the outer wall of the mounting block is fixedly connected to the connecting block, the outer wall of the connecting block is rotatably connected to the execution bar, the outer wall of the mounting block is fixedly connected to the reset spring, the end of the reset spring away from the mounting block is fixedly connected to the outer wall of the top of the execution bar, and the outer wall of the mounting block is fixedly connected to the outer wall of the bottom of the bracket.

[0008] Preferably, the neutralization and washing device includes a primary neutralization device, and the outer wall of the primary neutralization device is fixedly connected to the secondary neutralization device; the primary neutralization device includes a connecting shaft, the outer wall of the connecting shaft is fixedly connected to a stirring blade, the outer wall of the connecting shaft is rotatably connected to a connecting plate, the outer wall of the connecting plate is fixedly connected to a stirring bar, the outer wall of the connecting shaft is rotatably connected to a filter plate, the outer wall of the filter plate is fixedly connected to the neutralization plate, the outer wall of the filter plate is fixedly connected to the acid liquid box, the inner wall of the neutralization plate is provided with a neutralization medium hole, the outer wall of the connecting shaft is fixedly connected to a pushing plate, the outer wall of the neutralization plate is provided with a discharge port, the outer wall of the acid liquid box is provided with an acid liquid hole, the outer wall of the connecting shaft is fixedly connected to a pressing plate, the outer wall of the pressing plate is fixedly connected to a spring mounting ring, and the spring mounting ring The outer wall of the mounting ring is slidably connected to a telescopic rod, the outer wall of the pressure plate is fixedly connected to a telescopic spring, and the end of the telescopic spring away from the spring mounting ring is fixedly connected to the outer wall of the bottom of the pressure plate; the secondary neutralization device includes a rotating shaft, the outer wall of the rotating shaft is rotatably connected to the neutralization box, the outer wall of the neutralization box is provided with a feed hole, the outer wall of the rotating shaft is fixedly connected to a rotating block, the outer wall of the rotating block is fixedly connected to a stirring bar, the outer wall of the neutralization box is provided with an outlet, the outer wall of the neutralization box is provided with a medium injection hole, and the inner wall of the neutralization box is provided with a medium port; the outer wall of the top of the connecting shaft is fixedly connected to the outer wall of the bottom of the drive shaft, the outer wall of the top of the connecting plate is fixedly connected to the outer wall of the bottom of the acid immersion plate, and the outer wall of the planetary gear is fixedly connected to the outer wall of the bottom of the acid immersion plate.

[0009] Preferably, the medium processing device includes a recycling device, and the outer wall of the recycling device is fixedly connected to the waste collection device; the recycling device includes a low-altitude medium box, the outer wall of the low-altitude medium box is fixedly connected to an extraction pipe, the outer wall of the extraction pipe is fixedly connected to a medium pump, the outer wall of the medium pump is fixedly connected to an output pipe, the outer wall of the output pipe is fixedly connected to an auxiliary pipe, and the outer wall of the auxiliary pipe is fixedly connected to a feed pipe; the inner wall of the neutralization plate is fixedly connected to the outer wall of the top of the output pipe through the neutralization medium hole, the inner wall of the neutralization box is fixedly connected to the outer wall of the bottom of the feed pipe through the feed hole, the inner wall of the neutralization plate is fixedly connected to the outer wall of the top of the feed pipe through the discharge port, and the outer wall of the low-altitude medium box is fixedly connected to the outer wall of the bottom of the neutralization box; the waste collection device includes a height medium box, the outer wall of the height medium box is fixedly connected to the collection pipe, the inner wall of the neutralization plate is fixedly connected to the outer wall of the top of the collection pipe through the acid hole, and the outer wall of the height medium box is fixedly connected to the outer wall of the bottom of the low-altitude medium box.

[0010] A method for using an acid-based flake graphite purification device, based on an acid-based flake graphite purification device, comprises the following steps:

[0011] Step 1: Put the crushed graphite particles and acid solution into a mixing device;

[0012] Step 2: The graphite particles and the acid solution are stirred and mixed by the acid leaching guide strips and the heat conductive strips in the mixing device and then enter the primary neutralization device. In the primary neutralization device, the mixture and the neutralization medium are stirred and washed by the stirring blades and the stirring strips and then enter the secondary neutralization device. In the secondary neutralization device, the mixture and the neutralization medium are stirred and neutralized again by the stirring strips and then flow out through the outlet, and the washed pure graphite particles are sent to the next process.

[0013] Step 3: The liquid squeezed out after the initial neutralization enters the high-pressure medium box, and the medium liquid after the secondary neutralization flows into the low-pressure medium box, and is then pumped by the medium pump to provide neutralization medium for the initial neutralization and washing, completing the washing process and obtaining the pure graphite after washing.

[0014] (3) Beneficial effects

[0015] The present invention provides an acid-based graphite flake purification device and method, which has the following beneficial effects:

[0016] (1) The relative rotation of the friction block, the heat-conducting block and the heat-conducting strip generates heat to assist the reaction between the graphite particles and the acid solution. Under the stirring of the heat-conducting strip and the acid leaching guide strip, the reaction between the graphite particles and the acid solution is promoted, so that the two react dynamically to achieve a dynamic and uniform reaction effect.

[0017] (2) When the acid immersion plate rotates, its raised part is in continuous contact with the execution bar. When the execution bar contacts the raised part, the reset spring is stretched by force. When the execution bar loses contact with the raised part, the reset spring is no longer under force and retracts. During the retraction process, the execution bar hits the acid immersion plate, causing the wall to vibrate. In this way, the continuous vibration is achieved to prevent the mixture from adhering to the inner wall.

[0018] (3) The neutralization medium and the liquid in the mixture are squeezed out by the pressing plate in the initial neutralization and washing. The pressing plate squeezes out the liquid under the action of the tension of the telescopic spring, and then pushes the remaining graphite particles into the secondary neutralization and washing. Through multiple neutralization and washing, the graphite particles can achieve a uniform and effective neutralization effect.

[0019] (4) By collecting high-degree medium and low-degree medium separately, the high-degree medium flowing out after the primary neutralization is collected, and the low-degree medium flowing out after the secondary neutralization is collected into the low-degree medium box, and then the low-degree medium is pumped into the primary neutralization by the medium pump for reuse, thereby achieving the effect of improving the utilization rate of the neutralization medium. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the mixed acid leaching device of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the mixed acid leaching device of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the mixed acid leaching device of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the neutralization and flushing device of the present invention;

[0026] Figure 7 It is a structural schematic diagram of the neutralization and flushing device of the present invention;

[0027] Figure 8 yes Figure 7 A schematic diagram of the structure at point A in the middle;

[0028] Figure 9 It is a structural schematic diagram of the neutralization and flushing device of the present invention;

[0029] Figure 10 It is a structural schematic diagram of the medium processing device of the present invention.

[0030] In the figure: 1. bracket; 2. mixed acid leaching device; 21. mixing device; 210. drive shaft; 211. drive gear; 212. planetary gear; 213. acid leaching plate; 214. discharge hole; 215. friction block; 216. heat conduction block; 217. heat conduction strip; 218. acid leaching guide strip; 22. vibration device; 220. mounting block; 221. connecting block; 222. execution strip; 223. return spring; 3. neutralization and washing device; 31. primary neutralization device; 310. connecting shaft; 311. connecting plate; 312. stirring strip; 313. neutralization plate; 314. neutralization medium hole; 315. stirring blade; 316. filter plate; 317. acid liquid tank; 318 , pressure plate; 3180, telescopic spring; 3181, spring mounting ring; 3182, telescopic rod; 319, push plate; 3110, discharge port; 3111, acid hole; 32, secondary neutralization device; 320, rotating shaft; 321, neutralization box; 322, rotating block; 323, stirring bar; 324, feed hole; 325, outlet; 326, medium injection hole; 327, medium port; 4, medium processing device; 41, recycling device; 410, low-altitude medium box; 411, extraction pipe; 412, medium pump; 413, output pipe; 414, auxiliary pipe; 415, feed pipe; 42, waste collection device; 420, high-altitude medium box; 421, collection pipe. DETAILED DESCRIPTION

[0031] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are chosen and described to better illustrate the principles of the invention and its practical application, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for specific applications.

[0032] See also Figure 1 - Figure 10 The present invention provides a technical solution: an acid-based flake graphite purification device, comprising a bracket 1, the outer wall of which is fixedly connected to a mixed acid leaching device 2, the outer wall of which is rotatably connected to a neutralization and washing device 3, and the outer wall of which is fixedly connected to a medium processing device 4;

[0033] The mixed acid leaching device 2 includes a mixing device 21, the outer wall of which is fixedly connected to a vibration device 22, the mixing device 21 includes a drive shaft 210, the outer wall of which is fixedly connected to a drive gear 211, the outer wall of which is meshed with a planetary gear 212, the outer wall of which is fixedly connected to an acid leaching plate 213, the inner wall of which is fixedly connected to an acid leaching guide strip 218, the outer wall of which is fixedly connected to a friction block 215, the outer wall of which is rotatably connected to a heat conducting block 216, the outer wall of which is fixedly connected to a heat conducting block 216. It is fixedly connected with a rotating heat-conducting bar 217, the outer wall of the heat-conducting block 216 is fixedly connected to the outer wall of the bottom of the acid immersion plate 213, and the outer wall of the bottom of the acid immersion plate 213 is provided with a discharge hole 214; the vibration device 22 includes a mounting block 220, the outer wall of the mounting block 220 is fixedly connected with a connecting block 221, the outer wall of the connecting block 221 is rotatably connected with an execution bar 222, the outer wall of the mounting block 220 is fixedly connected with a reset spring 223, the end of the reset spring 223 away from the mounting block 220 is fixedly connected to the outer wall of the top of the execution bar 222, and the outer wall of the mounting block 220 is fixedly connected to the outer wall of the bottom of the bracket 1. The device is driven by a motor, and the driving shaft 210 rotates while driving the driving gear 211 to rotate. The driving gear 211 drives the planetary gear 212 to rotate through gear meshing. The planetary gear 212 is fixed on the pickling plate 213. When the pickling plate 213 rotates, it drives the pickling guide bar 218 on the inner wall to rotate. When the pickling guide bar 218 rotates, the acid solution and the graphite particles are stirred, so that the two react in a dynamic state. When the driving shaft 210 rotates, it drives the friction block 215 to rotate. When the pickling plate 213 rotates, it drives the heat conducting block 216 to rotate. Friction is generated between the friction block 215 and the heat conducting block 216 during rotation, and heat is generated during the friction process. The heat is dissipated through the rotating heat conducting bar 217 fixedly installed on the heat conducting block 216, so that the heat is conducted to assist the reaction between the graphite particles and the acid solution. The reaction time of the two is shortened, and the graphite particles and the acid liquid complete the reaction process under the action of heat and stirring; during the rotation of the acid immersion plate 213, the raised portion of the outer wall of the acid immersion plate 213 continuously contacts the execution bar 222. When the execution bar 222 does not contact the raised portion, it contacts the outer wall of the acid immersion plate 213 under the action of the return spring 223. When the execution bar 222 contacts the raised portion, the return spring 223 is stretched by force. After the raised portion separates from the execution bar 222, the return spring 223 retracts and hits the outer wall of the acid immersion plate 213, generating vibration during the collision. The continuous contact and separation causes the acid immersion plate 213 to vibrate, preventing the graphite particles and acid liquid mixture from staying on the inner wall of the acid immersion plate 213. The mixture flows out through the discharge hole 214 under the action of centrifugal force.

[0034] The neutralization and washing device 3 includes a primary neutralization device 31, the outer wall of which is fixedly connected to a secondary neutralization device 32, the primary neutralization device 31 including a connecting shaft 310, the outer wall of which is fixedly connected to a stirring blade 315, the outer wall of which is rotatably connected to a connecting plate 311, the outer wall of which is fixedly connected to a stirring bar 312, the outer wall of which is rotatably connected to a filter plate 316, the outer wall of which is fixedly connected to a neutralization plate 313, the outer wall of which is fixedly connected to an acid liquid tank 317, the inner wall of which is provided with a neutralization medium hole 314, the outer wall of which is fixedly connected to a push plate 319, the outer wall of which is provided with a discharge port 3110, the outer wall of which is provided with an acid liquid hole 3111, the outer wall of which is provided with an acid liquid hole 3111, the outer wall of which is provided with an acid liquid hole 3111 The wall is fixedly connected to a pressure plate 318, the outer wall of the pressure plate 318 is fixedly connected to a spring mounting ring 3181, the outer wall of the spring mounting ring 3181 is slidably connected to a telescopic rod 3182, the outer wall of the pressure plate 318 is fixedly connected to a telescopic spring 3180, and one end of the telescopic spring 3180 away from the spring mounting ring 3181 is fixedly connected to the outer wall of the bottom of the pressure plate 318; the secondary neutralization device 32 includes a rotating shaft 320, the outer wall of the rotating shaft 320 is rotatably connected to a neutralization box 321, the outer wall of the neutralization box 321 is provided with a feed hole 324, the outer wall of the rotating shaft 320 is fixedly connected to a rotating block 322, the outer wall of the rotating block 322 is fixedly connected to a stirring bar 323, the outer wall of the neutralization box 321 is provided with an outlet 325, the outer wall of the neutralization box 321 is provided with a medium injection hole 326, and the inner wall of the neutralization box 321 is provided with a medium port 327;When the device is in use, after the mixture enters the neutralization plate 313, the connecting shaft 310 is fixedly connected to the drive shaft 210, driving the stirring blade 315 to stir the mixture, the connecting plate 311 is fixedly connected to the connecting shaft 310, and the connecting plate 311 is fixedly connected to the stirring bar 312, and the stirring bar 312 also stirs the mixture. At the same time, the neutralizing medium is injected into the neutralization plate 313 through the neutralizing medium hole 314. Under the injection of the neutralizing medium, the neutralizing medium and the mixture are mixed again. Under the joint stirring of the stirring blade 315 and the stirring bar 312, the mixture undergoes a neutralization reaction. The mixture after the neutralization reaction is stirred on the neutralization plate 313. The bottom of the mixture is aggregated. A push plate 319 is fixedly connected to the outer wall of the bottom of the connecting shaft 310. A pressure plate 318 is also fixedly connected to the outer wall of the bottom of the connecting shaft 310. The outer wall of the bottom of the pressure plate 318 squeezes the acidic liquid from the bottom-aggregated mixture under the action of a telescopic spring 3180. When the pressure plate 318 squeezes the mixture, the telescopic spring 3180 is stretched, and the telescopic rod 3182 extends. Under the force of the telescopic spring 3180, the highly concentrated acid in the mixture is squeezed out. The acid passes through the filter plate 316 and enters the acid tank 317. The push plate 319 pushes the remaining graphite particles out through the discharge port 3110.

[0035] The medium processing device 4 includes a recycling device 41, the outer wall of which is fixedly connected to a waste collection device 42; the recycling device 41 includes a low-altitude medium box 410, the outer wall of which is fixedly connected to an extraction pipe 411, the outer wall of which is fixedly connected to a medium pump 412, the outer wall of which is fixedly connected to an output pipe 413, the outer wall of which is fixedly connected to an auxiliary pipe 414, the outer wall of which is fixedly connected to a feed pipe 415; the inner wall of the neutralization plate 313 is fixedly connected to the outer wall of the top of the output pipe 413 through the neutralization medium hole 314 The inner wall of the neutralization box 321 is fixedly connected to the outer wall of the bottom of the feed pipe 415 through the feed hole 324, the inner wall of the neutralization plate 313 is fixedly connected to the outer wall of the top of the feed pipe 415 through the discharge port 3110, and the outer wall of the low-altitude medium box 410 is fixedly connected to the outer wall of the bottom of the neutralization box 321; the waste collection device 42 includes a height medium box 420, and the outer wall of the height medium box 420 is fixedly connected to the collection pipe 421, the inner wall of the neutralization plate 313 is fixedly connected to the outer wall of the top of the collection pipe 421 through the acid hole 3111, and the outer wall of the height medium box 420 is fixedly connected to the outer wall of the bottom of the low-altitude medium box 410. When the device is in use, the medium pump 412 extracts the neutralizing medium in the low-concentration medium box 410 through the extraction pipe 411, and then injects the neutralizing medium into the neutralizing medium hole 314 through the output pipe 413. The outer wall of the delivery pipe 415 is fixedly connected to the auxiliary pipe 414. The low-concentration neutralizing medium enters the delivery pipe 415 through the auxiliary pipe 414 to assist the graphite particles in entering the secondary neutralization device 32. By recovering the high-concentration and low-concentration neutralizing media, the high-concentration neutralizing medium is recovered and the low-concentration neutralizing medium is recycled and reused, so that the low-concentration neutralizing medium provides neutralizing raw materials for the initial neutralization washing, thereby improving utilization and reducing resource waste.

[0036] A method for using an acid-based flake graphite purification device, based on the above-mentioned acid-based flake graphite purification device, comprises the following steps:

[0037] Step 1: Add the crushed graphite particles and acid solution into the mixing device 21;

[0038] Step 2: The graphite particles and the acid solution are stirred and mixed by the acid leaching guide strips 218 and the heat conductive strips 217 in the mixing device 21, and then enter the primary neutralization device 31. In the primary neutralization device 31, the mixture and the neutralization medium are stirred and washed by the stirring blades 315 and the stirring strips 312, and then enter the secondary neutralization device 32. In the secondary neutralization device 32, the mixture and the neutralization medium are stirred and washed again by the stirring strips 323, and then flow out through the outlet 325. The washed pure graphite particles are sent to the next process.

[0039] Step 3: The liquid squeezed out after the initial neutralization enters the high-purity medium box, and the medium liquid after the secondary neutralization flows into the low-purity medium box 410, and is then pumped by the medium pump 412 to provide neutralization medium for the initial neutralization and washing, completing the washing process and obtaining the pure graphite after washing.

[0040] During use, graphite particles and acid enter the pickling plate 213 through the two inlets at the top. Driven by the motor, the drive shaft 210 rotates while driving the drive gear 211. The drive gear 211 drives the planetary gear 212 to rotate through gear meshing. The planetary gear 212 is fixed on the pickling plate 213. When the pickling plate 213 rotates, it drives the pickling guide bar 218 on the inner wall to rotate. When the pickling guide bar 218 rotates, the acid and graphite particles are stirred, so that the two react dynamically. When the drive shaft 210 rotates, it drives the friction block 215 to rotate. When the pickling plate 213 rotates, it drives the heat conducting block 216 to rotate. Friction occurs between the friction block 215 and the heat conducting block 216 during rotation, and heat is generated during the friction process. The heat is transmitted through the heat conducting block 216 fixedly mounted on the heat conducting block 213. The rotating heat conducting strip 217 on 16 dissipates heat, so that heat is conducted to assist the reaction between the graphite particles and the acid solution, shortening the reaction time of the two. The graphite particles and the acid solution complete the reaction process under the action of heat and stirring; during the rotation of the pickling plate 213, the raised portion of the outer wall of the pickling plate 213 continuously contacts the execution strip 222. When the execution strip 222 does not contact the raised portion, it contacts the outer wall of the pickling plate 213 under the action of the return spring 223. When the execution strip 222 contacts the raised portion, the return spring 223 is stretched by force. After the raised portion separates from the execution strip 222, the return spring 223 retracts and hits the outer wall of the pickling plate 213, generating vibration during the collision, thereby constantly contacting and separating to cause the pickling plate 213 to vibrate, thereby preventing the graphite particles from The mixture of particles and acid solution stays on the inner wall of the acid immersion plate 213, and the mixture enters the neutralization plate 313 through the discharge hole 214 under the action of centrifugal force. After the mixture enters the neutralization plate 313, the connecting shaft 310 is fixedly connected to the drive shaft 210, driving the stirring blade 315 to stir the mixture, the connecting plate 311 is fixedly connected to the connecting shaft 310, and the connecting plate 311 is fixedly connected to the stirring bar 312, and the stirring bar 312 also stirs the mixture. At the same time, the neutralizing medium is injected into the neutralization plate 313 through the neutralizing medium hole 314. Under the injection of the neutralizing medium, the neutralizing medium and the mixture are mixed again. Under the joint stirring of the stirring blade 315 and the stirring bar 312, the mixture undergoes a neutralization reaction. The mixture after the neutralization reaction gathers at the bottom of the neutralization plate 313, and the mixture is connected. The outer wall of the bottom of the connecting shaft 310 is fixedly connected to a push plate 319, and the outer wall of the bottom of the connecting shaft 310 is fixedly connected to a pressure plate 318. The outer wall of the bottom of the pressure plate 318 squeezes out the acidic liquid in the mixture gathered at the bottom under the action of the telescopic spring 3180. When the pressure plate 318 squeezes the mixture, the telescopic spring 3180 is stretched by force, and the telescopic rod 3182 extends at the same time. Under the action of the telescopic spring 3180, the high-concentration acid liquid in the mixture is squeezed out, and the acid liquid passes through the filter plate 316 into the acid liquid tank 317. The acid liquid tank 317 enters the collection pipe 421 through the acid liquid hole 3111 and then flows into the height medium box 420. After the high-concentration acid liquid is squeezed out, the push plate 319 pushes the remaining graphite particles through the discharge port 3110 into the delivery pipe 415.The outer wall of the feeding pipe 415 is fixedly connected with an auxiliary pipe 414. The low-degree neutralization medium enters the feeding pipe 415 through the auxiliary pipe 414 to assist the graphite particles to enter the secondary neutralization device 32. The graphite particles enter the neutralization box 321 through the feed hole 324 with the assistance of the neutralization medium. After entering the neutralization box 321, the rotating shaft 320 rotates under the drive of the motor. The rotating shaft 320 is fixedly connected to the rotating block 322. The stirring bar 323 is fixedly connected to the rotating block 322. When the rotating shaft 320 rotates, it drives the rotating block 322 to rotate. The neutralization medium enters the neutralization box 321 through the medium port 327. Under the stirring of the stirring bar 323, the graphite particles enter the neutralization box 321. Under the action of the filter, the graphite particles react with the neutralizing medium again to react with the neutralizing medium. The reaction mixture discharges the low-concentration neutralizing medium into the low-concentration medium box 410 through the filter hole. The graphite particles enter the outlet 325 under the action of the pushing block and reach the next process. The medium pump 412 extracts the neutralizing medium in the low-concentration medium box 410 through the extraction pipe 411 and then injects the neutralizing medium into the neutralizing medium hole 314 through the output pipe 413 to neutralize the mixture. The low-concentration neutralizing medium after the secondary neutralization and washing is collected and extracted by the medium pump 412 to provide neutralizing medium for the initial neutralization and washing, thereby reducing the waste of neutralizing medium.

[0041] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making creative work should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention are implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. An acid-based flake graphite purification device, comprising a bracket (1), characterized in that: The outer wall of the bracket (1) is fixedly connected to a mixed acid leaching device (2), the outer wall of the mixed acid leaching device (2) is rotatably connected to a neutralization and washing device (3), and the outer wall of the neutralization and washing device (3) is fixedly connected to a medium processing device (4); The mixed acid leaching device (2) comprises a mixing device (21), and a vibration device (22) is fixedly connected to the outer wall of the mixing device (21); The mixing device (21) includes a driving shaft (210), the outer wall of the driving shaft (210) is fixedly connected to a driving gear (211), the outer wall of the driving gear (211) is meshed with a planetary gear (212), the outer wall of the planetary gear (212) is fixedly connected to an acid immersion plate (213), the inner wall of the acid immersion plate (213) is fixedly connected to an acid immersion guide strip (218), the outer wall of the driving shaft (210) is fixedly connected to a friction block (215), the outer wall of the friction block (215) is rotatably connected to a heat conduction block (216), the outer wall of the heat conduction block (216) is fixedly connected to a rotating heat conduction strip (217), the outer wall of the heat conduction block (216) is fixedly connected to the outer wall of the bottom of the acid immersion plate (213), and the outer wall of the bottom of the acid immersion plate (213) is provided with a discharge hole (214).

2. The acid-based flake graphite purification device according to claim 1, characterized in that: The vibration device (22) includes a mounting block (220), the outer wall of the mounting block (220) is fixedly connected to a connecting block (221), the outer wall of the connecting block (221) is rotatably connected to an execution bar (222), the outer wall of the mounting block (220) is fixedly connected to a return spring (223), one end of the return spring (223) away from the mounting block (220) is fixedly connected to the outer wall of the top of the execution bar (222), and the outer wall of the mounting block (220) is fixedly connected to the outer wall of the bottom of the bracket (1).

3. The acid-based flake graphite purification device according to claim 2, wherein: The neutralization and washing device (3) comprises a primary neutralization device (31), the outer wall of the primary neutralization device (31) is fixedly connected to a secondary neutralization device (32), the primary neutralization device (31) comprises a connecting shaft (310), the outer wall of the connecting shaft (310) is fixedly connected to a stirring blade (315), the outer wall of the connecting shaft (310) is rotatably connected to a connecting plate (311), the outer wall of the connecting plate (311) is fixedly connected to a stirring bar (312), the outer wall of the connecting shaft (310) is rotatably connected to a filter plate (316), the outer wall of the filter plate (316) is fixedly connected to a neutralization plate (313), the outer wall of the filter plate (316) is fixedly connected to an acid liquid tank (317), and the inner wall of the neutralization plate (313) is opened. A neutralizing medium hole (314) is provided, the outer wall of the connecting shaft (310) is fixedly connected to a push plate (319), the outer wall of the neutralizing plate (313) is provided with a discharge port (3110), the outer wall of the acid liquid tank (317) is provided with an acid liquid hole (3111), the outer wall of the connecting shaft (310) is fixedly connected to a pressing plate (318), the outer wall of the pressing plate (318) is fixedly connected to a spring mounting ring (3181), the outer wall of the spring mounting ring (3181) is slidably connected to a telescopic rod (3182), the outer wall of the pressing plate (318) is fixedly connected to a telescopic spring (3180), and one end of the telescopic spring (3180) away from the spring mounting ring (3181) is fixedly connected to the outer wall of the bottom of the pressing plate (318).

4. The acid-based flake graphite purification device according to claim 3, characterized in that: The secondary neutralization device (32) comprises a rotating shaft (320), the outer wall of the rotating shaft (320) is rotatably connected to a neutralization box (321), the outer wall of the neutralization box (321) is provided with a feed hole (324), the outer wall of the rotating shaft (320) is fixedly connected to a rotating block (322), the outer wall of the rotating block (322) is fixedly connected to a stirring bar (323), the outer wall of the neutralization box (321) is provided with an outlet (325), the outer wall of the neutralization box (321) is provided with a medium injection hole (326), and the inner wall of the neutralization box (321) is provided with a medium port (327).

5. The acid-based flake graphite purification device according to claim 4, characterized in that: The outer wall of the top of the connecting shaft (310) is fixedly connected to the outer wall of the bottom of the driving shaft (210), the outer wall of the top of the connecting plate (311) is fixedly connected to the outer wall of the bottom of the acid immersion plate (213), and the outer wall of the planetary gear (212) is fixedly connected to the outer wall of the bottom of the acid immersion plate (213).

6. The acid-based flake graphite purification device according to claim 5, characterized in that: The medium processing device (4) includes a recycling device (41), the outer wall of the recycling device (41) is fixedly connected to a waste collection device (42), the recycling device (41) includes a low-altitude medium box (410), the outer wall of the low-altitude medium box (410) is fixedly connected to an extraction pipe (411), the outer wall of the extraction pipe (411) is fixedly connected to a medium pump (412), the outer wall of the medium pump (412) is fixedly connected to an output pipe (413), the outer wall of the output pipe (413) is fixedly connected to an auxiliary pipe (414), and the outer wall of the auxiliary pipe (414) is fixedly connected to a material delivery pipe (415).

7. The acid-based flake graphite purification device according to claim 6, characterized in that: The inner wall of the neutralization plate (313) is fixedly connected to the outer wall of the top of the output pipe (413) through the neutralization medium hole (314); the inner wall of the neutralization box (321) is fixedly connected to the outer wall of the bottom of the delivery pipe (415) through the feed hole (324); the inner wall of the neutralization plate (313) is fixedly connected to the outer wall of the top of the delivery pipe (415) through the discharge port (3110); and the outer wall of the low-alcohol medium box (410) is fixedly connected to the outer wall of the bottom of the neutralization box (321).

8. The acid-based flake graphite purification device according to claim 7, characterized in that: The waste collection device (42) includes a high-altitude medium box (420), the outer wall of the high-altitude medium box (420) is fixedly connected to a collection pipe (421), the inner wall of the neutralization plate (313) is fixedly connected to the outer wall of the top of the collection pipe (421) through the acid hole (3111), and the outer wall of the high-altitude medium box (420) is fixedly connected to the outer wall of the bottom of the low-altitude medium box (410).

9. A method for purifying flake graphite using an acid method, based on the flake graphite purification device using an acid method according to claim 8, characterized in that: The following steps are involved: Step 1: Adding crushed graphite particles and acid solution into a mixing device (21); Step 2: The graphite particles and the acid solution are stirred and mixed by the acid leaching guide strip (218) and the heat conductive strip (217) in the mixing device (21) and then enter the primary neutralization device (31). In the primary neutralization device (31), the mixture and the neutralization medium are stirred and washed by the stirring blade (315) and the stirring strip (312) and then enter the secondary neutralization device (32). In the secondary neutralization device (32), the mixture and the neutralization medium are stirred and washed again by the stirring strip (323) and then flow out through the outlet (325), and the washed pure graphite particles are sent to the next process. Step 3: The liquid squeezed out after the initial neutralization enters the high-purity medium box, and the medium liquid after the secondary neutralization flows into the low-purity medium box (410), and is then pumped by the medium pump (412) to provide neutralization medium for the initial neutralization washing, completing the washing process and obtaining the washed pure graphite.

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