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CN-121976040-A - Rare earth oxalate precipitation device

CN121976040ACN 121976040 ACN121976040 ACN 121976040ACN-121976040-A

Abstract

The invention relates to the technical field of rare earth oxalate recovery, and discloses a rare earth oxalate precipitation device for mixing oxalic acid with rare earth ions and then collecting the mixed oxalic acid and the rare earth ions, which comprises a precipitation tank, wherein the middle part of the inner cavity of the precipitation tank is provided with a rotating component for stirring the mixture and scraping off precipitate attached to the surface of the inner cavity of the precipitation tank, the bottom of the inner cavity of the precipitation tank is provided with a discharging component for discharging wastewater, the discharging component comprises a fixed block, the fixed block is fixedly connected with the bottom of the inner cavity of the precipitation tank, the inner cavity top of the precipitation tank is provided with a feeding assembly for automatically placing oxalic acid and rare earth ions into the precipitation tank, the rotation of the connecting rod drives the rotary shell to rotate and slide up and down, so that the stirring rod revolves around the connecting rod as the center of a circle and slides up and down, uniform stirring of rare earth oxalate in the precipitation tank is ensured, and the multidimensional stirring mode is favorable for breaking aggregation and layering phenomena between materials, and uniformity and efficiency of stirring are improved.

Inventors

  • WANG XIONGYUAN
  • LI XIANYANG
  • ZOU JIANLI
  • Zhao Jingdu

Assignees

  • 江西万弘高新技术材料有限公司

Dates

Publication Date
20260505
Application Date
20260206

Claims (8)

  1. 1. The utility model provides a rare earth oxalate precipitation device for collect oxalic acid and rare earth ion after mixing, including precipitation tank (1), a plurality of supporting leg (11), staircase (12), oxalic acid place pipe (13), rare earth ion place pipe (14), exhaust gas collecting pipe (15), inlet tube (16), crystallization place pipe (17), filter screen (18), check valve (19), precipitate discharge gate (110), waste water discharge pipe (111), wherein precipitation tank (1) inner chamber middle part is provided with and is used for stirring the mixture and strike off the rotation subassembly (2) of the precipitate that adheres to at precipitation tank (1) inner chamber surface, precipitation tank (1) inner chamber bottom is provided with and is used for carrying out discharge subassembly (3) of waste water, discharge subassembly (3) include fixed block (35), fixed block (35) fixed connection are in precipitation tank (1) inner chamber bottom, precipitation tank (1) inner chamber top is provided with and is used for placing oxalic acid and rare earth ion inside feeding subassembly (4) of precipitation tank (1) automatically.
  2. 2. The rare earth oxalate precipitation device according to claim 1, wherein the plurality of supporting legs (11) are circumferentially arrayed and fixedly connected to the lower surface of the precipitation tank (1), the escalator (12) is fixedly connected to the top of the outer surface of the precipitation tank (1), the oxalic acid placing pipe (13) and the rare earth ion placing pipe (14) are fixedly connected to the upper surface of the precipitation tank (1), one end of the exhaust collecting pipe (15) is fixedly connected with the top of the precipitation tank (1), the other end of the exhaust collecting pipe (15) is fixedly connected with the external collecting device, the water inlet pipe (16) is fixedly connected to the inside of the precipitation tank (1), one end of the water inlet pipe (16) away from the precipitation tank (1) is rotatably connected with an opening door, the crystallization placing pipe (17) is fixedly connected to the inside of the precipitation tank (1), the filter screen (18) is fixedly connected to the inner cavity surface of the precipitation tank (1) close to the water inlet pipe (16), the one-way valve (19) is rotatably connected to the inner cavity surface of the precipitation tank (17), the precipitate discharging port (110) is rotatably connected to the precipitation tank (1) and is fixedly connected to the bottom of the precipitation tank (35) and fixedly connected to the outer surface (111), and a control valve is detachably arranged at one end of the wastewater discharge pipe (111) far away from the sedimentation tank (1).
  3. 3. The rare earth oxalate precipitation device of claim 1, wherein the rotating assembly (2) comprises a fixed cross plate (21), the fixed cross plate (21) is fixedly connected to the top of an inner cavity of the precipitation tank (1), two feeding plates are fixedly connected to the outer surface of the fixed cross plate (21), a driving column (22) is rotatably connected to the bottom of the fixed cross plate (21), a connecting rod (23) is fixedly connected to the lower surface of the fixed cross plate (21), a rotating ring (24) is fixedly connected to the outer surface of the driving column (22), a first telescopic rod (25) is fixedly connected to the lower surface of the rotating ring (24) in a circumferential array arrangement, a second telescopic rod (26) is fixedly connected to the upper surface of the fixed block (35), a fixed gear (27) is fixedly connected to the telescopic end of the second telescopic rod (26), a first limiting plate (28) is fixedly connected to the top of the fixed gear (27), a second limiting plate (29) is rotatably connected to the bottom of the fixed gear (27), a sliding groove (210) is formed in the top of the fixed cross plate (21), a second outer surface (211) is symmetrically arranged on the bottom of the rotating housing (211), the utility model discloses a rotary device, including rotation casing (211), connecting block (213), connecting block (218), connecting block (217) are kept away from one end at rotation casing (211) inner chamber top all rotates and is connected with rotation gear (214), two rotation gear (214) bottom all fixedly connected with dwang (215), two dwang (215) bottom all fixedly connected with puddler (216), rotation casing (211) lower surface bilateral symmetry fixedly connected with link (217), two link (217) are kept away from one end fixedly connected with straight line pole (218), two straight line pole (218) are kept away from one end fixedly connected with of link (217) and strike off piece (219), rotation casing (211) upper surface has been seted up the rotary groove, rotation casing (211) rotary groove inner chamber surface symmetry fixedly connected with gag lever post (220).
  4. 4. The rare earth oxalate precipitation device of claim 1, wherein the discharge assembly (3) further comprises a fixing frame (31), the fixing frame (31) is fixedly connected to the bottom of an inner cavity of the precipitation tank (1) and located below the fixing blocks (35), telescopic springs (32) are fixedly connected to the upper surface of the fixing frame (31) in a cross array arrangement mode, a lower pressing plate (33) is fixedly connected to one end, away from the fixing frame (31), of each telescopic spring (32), and a plugging column (34) is fixedly connected to the upper surface of the lower pressing plate (33) in a circumferential array arrangement mode.
  5. 5. The rare earth oxalate precipitation device of claim 1, wherein the feeding component (4) comprises a sliding Z rod (41) and a sliding vertical rod (42), the sliding Z rod (41) and the sliding vertical rod (42) respectively penetrate through the outer surfaces of two feeding plates which are connected with the fixed cross plate (21) in a sliding manner, a rotating column I (43) is rotationally connected to the bottom of an inner cavity of the rare earth ion placing tube (14), a rotating door I (44) is fixedly connected to the outer surface of the rotating column I (43), a rotating column II (45) is rotationally connected to the bottom of the inner cavity of the rare earth ion placing tube (14), and a rotating door II (46) is fixedly connected to the outer surface of the rotating column II (45).
  6. 6. The rare earth oxalate precipitation device according to claim 3, wherein the driving column (22) is drivingly installed on a built-in driving motor, the built-in driving motor is electrically connected with an external controller, the connecting rod (23) is rotationally connected inside the driving column (22), a bidirectional thread groove is formed in the outer surface of one end, far away from the driving column (22), of the connecting rod (23), one end, far away from the rotating ring (24), of the telescopic rod (25) is fixedly connected with the upper surface of the rotating shell (211), the fixed gear (27) is meshed with the rotating gear (214), the rotating gear (214) is rotationally connected between the first limiting plate (28) and the second limiting plate (29), the scraping block (219) is matched with the inner cavity surface of the precipitation tank (1), and the limiting rod (220) is slidingly connected in the bidirectional thread groove on the outer surface of the connecting rod (23).
  7. 7. The rare earth oxalate precipitation device of claim 4, wherein the outer surface of the fixed block (35) is provided with drainage grooves in a circumferential array arrangement and penetrating manner, and each plugging column (34) plugs each drainage groove of the fixed block (35) respectively.
  8. 8. The rare earth oxalate precipitation device according to claim 5, wherein torsion springs are arranged at two ends of the first rotating column (43) and the second rotating column (45), the top of the sliding Z rod (41) is abutted against the lower surface of the first rotating door (44), the bottom of the sliding Z rod (41) is abutted against the upper surface of the rotating shell (211), the top of the sliding vertical rod (42) is abutted against the outer surface of the second rotating door (46), and the bottom of the sliding vertical rod (42) is abutted against the upper surface of the rotating shell (211).

Description

Rare earth oxalate precipitation device Technical Field The invention relates to the technical field of rare earth oxalate recovery, in particular to a rare earth oxalate precipitation device. Background In the field of rare earth extraction and processing, rare earth oxalate precipitation is widely applied to separation and purification of rare earth elements from complex mother liquor as an important process step, the process step involves combining rare earth ions with oxalate ions to form insoluble rare earth oxalate precipitation, and then rare earth oxide or other rare earth products are obtained through subsequent treatment. However, in the existing rare earth oxalate precipitation device, a single stirring mode is adopted, for example, stirring is carried out only through rotation of a stirring paddle, fluid power can be generated through rotation of the stirring paddle, reactants such as rare earth feed liquid and oxalic acid solution are helped to be uniformly mixed in a reaction container, meanwhile, the rotation of the stirring paddle can break up caking, so that precipitates are kept in a loose state, subsequent filtering and separating operations are facilitated, however, aggregation and layering phenomena among materials are easily caused by the single stirring paddle, stirring uniformity and efficiency are not high, therefore, effective contact area among materials is limited, reaction between oxalic acid and rare earth ions is insufficient, and precipitation efficiency and recovery of rare earth oxalate are affected; Secondly, in the precipitation process of rare earth oxalate, the precipitate generated by the reaction of oxalic acid and rare earth ions is easy to adhere to the surface of the inner cavity of the precipitation box, so that the surface of the inner cavity is seriously polluted, the precipitation efficiency is reduced, the purity and quality of the precipitate are affected, and meanwhile, the difficulty of subsequent operation and cleaning is increased, Finally, the existing rare earth oxalate precipitation device needs manual intervention during drainage, is complex in operation, is easy to cause untimely or excessive wastewater discharge due to improper manual operation, affects production efficiency and operation convenience, and is lack of a reaction condition for enabling crystals to react with water at the initial stage of reaction to create favorable conditions, so that the reaction rate of oxalic acid and rare earth ions can be limited, and further the overall production efficiency and product quality are affected. For this purpose, a rare earth oxalate precipitation device is proposed. Disclosure of Invention The invention aims to provide a rare earth oxalate precipitation device for solving the problems in the prior art. The rare earth oxalate precipitation device comprises a precipitation box, a plurality of supporting legs, an escalator, an oxalic acid placing pipe, a rare earth ion placing pipe, an exhaust gas collecting pipe, a water inlet pipe, a crystallization placing pipe, a filter screen, a one-way valve, a precipitate discharging hole and a waste water discharging pipe, wherein a rotating component for stirring the mixture and scraping off the precipitate attached to the surface of the precipitation box inner cavity is arranged in the middle of the precipitation box inner cavity, a discharging component for discharging waste water is arranged at the bottom of the precipitation box inner cavity, the discharging component comprises a fixed block, the fixed block is fixedly connected to the bottom of the precipitation box inner cavity, and a feeding component for automatically placing the oxalic acid and the rare earth ions into the precipitation box is arranged at the top of the precipitation box inner cavity. Preferably, a plurality of supporting legs are circumference array arrangement fixed connection in the setting tank lower surface, staircase fixed connection is in setting tank surface top, oxalic acid is placed pipe, tombarthite ion and is placed the pipe and all fixed intercommunication in setting tank upper surface, waste gas collecting pipe one end and setting tank top fixed intercommunication, the waste gas collecting pipe other end and external collection device fixed intercommunication, the inlet tube is fixed to be linked together in setting tank inside, the one end that the setting tank was kept away from to the inlet tube rotates to be connected with and opens the door, crystallization is placed the pipe and is fixedly linked together in setting tank inside, filter screen fixed connection is close to inlet tube inner chamber surface in setting tank, the check valve rotates to be connected in setting tank and is close to crystallization and place pipe inner chamber surface, the precipitate discharge gate rotates to be connected in setting tank surface and be located the fixed block top, waste water discharge pipe is fixed to be linked together