A reactor for the preparation of iron oxide by a precipitation process

Abstract

This invention relates to the field of iron oxide preparation technology, and discloses a reactor for preparing iron oxide by precipitation. The reactor includes a hollow main body, a storage component fixed inside the main body, a spraying component sequentially fixed along the length of the storage component, an adjusting component located on top of the storage component and fixed to the main body, and a rotating stirring component located at the bottom of the adjusting component and connected to the storage component and the spraying component. This invention effectively avoids the accumulation of large amounts of iron filings at the bottom of the reaction vessel, preventing slow reaction rates and incomplete reactions. It uses pressurized gas to spray the precipitated iron filings upwards, ensuring thorough contact and mixing with the solution, thus improving the efficiency and quality of secondary oxidation of the iron filings. The mixture of solution and iron filings is achieved through vertical compression, vibration, and stirring, increasing the mixing contact time and ensuring sufficient contact between the oxidizing gas and the solution, thereby improving the reaction environment and enhancing the reaction rate and quality.

Description

Technical Field

[0001] This invention relates to the field of iron oxide preparation technology, and more particularly to a reactor for preparing iron oxide by precipitation method. Background Technology

[0002] Iron oxide pigment is an important inorganic chemical pigment widely used in coatings, construction, and transportation. Currently, the production methods for iron oxide pigment include dry and wet processes. The dry process generates a large amount of waste gas, causing significant environmental pollution. The wet process is the most commonly used method in industry, and in the wet process of manufacturing iron oxide, a cylindrical reaction vessel is generally used. Ferrous sulfate solution is added to the reaction vessel, sodium hydroxide solution is added to adjust the pH value, air is introduced from the bottom of the vessel at a certain temperature, and the mixture is continuously stirred to promote reaction. Iron filings are gradually added to participate in the reaction until the pigment in the reaction vessel reaches the desired state. At this point, the reaction is stopped, and the reaction solution is pumped to a filtration unit. After washing, drying, and packaging, the finished product is obtained. In existing preparation methods, the iron filings tend to settle to the bottom of the reactor, resulting in low efficiency of the secondary oxidation reaction and unstable reaction quality. Traditional reactors are also inconvenient for fully dispersing and mixing the iron filings. Therefore, a reactor for preparing iron oxide by precipitation method is proposed. Summary of the Invention

[0003] To address the technical problems of low efficiency and unstable reaction quality in the secondary oxidation reaction due to the easy sedimentation of iron filings to the bottom of the reactor, and the inconvenience of fully dispersing and mixing iron filings in traditional reactors, this invention provides a reactor for preparing iron oxide by precipitation.

[0004] The present invention is achieved by the following technical solution: a reactor for preparing iron oxide by precipitation, comprising a hollow main body, a storage component fixed inside the main body, a spray component fixedly connected along the length of the storage component, an adjustment component disposed on the top of the storage component and fixedly connected to the main body, and a rotary stirring component disposed at the bottom of the adjustment component and connected to the storage component and the spray component. The adjustment assembly includes a rotating tube that is movably sleeved with the inner sidewall of the top of the main body, a gear ring 1 fixedly sleeved on the outer ring of the rotating tube, a gear 1 meshing with one side of the gear ring 1 and movably sleeved with the inner sidewall of the top of the main body, a gear ring 2 meshing with one side of the gear ring 1 and movably sleeved with the inner sidewall of the top of the main body, and an L-shaped push-pull rod 1 fixedly connected to the bottom of the gear ring 2. The push-pull rod 1 is slidably connected to the storage assembly. A drive unit 1 fixedly connected to the main body is installed on one side of the rotating tube. The storage component includes a bottom sleeve with an annular structure fixed to the inner wall of the bottom of the main body, a movable tube slidably sleeved on the inner ring of the top of the bottom sleeve, a top sleeve slidably sleeved on the outer ring of the top of the movable tube and fixed to the inner wall of the top of the main body, a support plate fixedly sleeved on the inner ring of the movable tube and connected to the rotary stirring assembly, a transfer plate with an annular structure fixed to the top of the support plate, an adjustment unit 1 with an annular structure opened in the inner ring of the transfer plate, a push-pull rod 2 slidably connected to the adjustment unit 1 and connected to the rotary stirring assembly, and an adjustment unit 2 with an annular structure set on the top of the support plate and located in the inner ring of the movable sleeve, and the adjustment unit 2 is slidably connected to the push-pull rod 1. An air jet box fixed to the main body is installed in the inner ring of the bottom sleeve, and a feeding unit fixed to the main body is installed in the outer ring of the movable sleeve.

[0005] Through the above technical solution, the adjustment component is started, which drives the rotary stirring component to rotate and perform oxygen supply and stirring operation on the reaction solution. At the same time, it drives the moving tube to move up and down. During the up and down movement, the spray component sprays oxygen to the solution. By using the method of layered iron filings and upward spraying to push the iron filings to float, the precipitated iron filings are sprayed upward, so that the iron filings react with the solution quickly.

[0006] As a further improvement to the above solution, the drive unit one includes a gear two that meshes with a gear ring one, a rotating shaft one that is fixedly sleeved on the inner ring of the gear two and movably sleeved with the main body, and a motor one that is fixedly connected to one end of the rotating shaft one that extends out of the top of the main body.

[0007] With the above technical solution, when the motor starts, the second gear rotates, then the first gear ring rotates, which drives the rotating tube to rotate, and the rotating tube drives the rotating stirring component to rotate.

[0008] As a further improvement to the above solution, the inner ring of the rotating tube is provided with a groove along its length, and the cross-section of the groove is a regular polygonal structure. The groove is slidably fitted with a guide ring that is fixedly fitted with the rotating stirring assembly.

[0009] As a further improvement to the above solution, the adjustment unit one includes an upper pressure groove one, a top retaining groove one, a lower pressure groove one and a bottom retaining groove one connected in sequence on the adapter plate, and the adjustment unit two includes a top retaining groove two, a lower pressure groove two, a bottom retaining groove two and an upper pressure groove two connected in sequence on the inner ring of the movable sleeve.

[0010] With the above technical solution, when the push-pull rod 1 moves along the top holding groove 2, the push-pull rod 2 moves along the upper pressing groove 1. At this time, the push-pull rod 2 moves upward relative to the adapter plate while rotating, which drives the adapter ring 1 to move upward. Then the transmission rod moves upward relative to the active tube. At this time, the mesh plate connected to the rotating ring 1 moves upward relative to the partition plate. Then the sealing block 2 moves upward to seal the through hole 2. The sealing block 1 moves upward and does not seal the through hole 1. The solution at the top of the partition plate cannot move downward from the through hole 2, and the gas at the bottom of the partition plate can be sprayed upward along the through hole 1. Afterwards, when the push-pull rod moves along the holding groove 2 to the lower pressure groove 2 and then moves along the lower pressure groove 2, the movable sleeve moves downward relative to the push-pull rod 1. When the movable sleeve moves downward, the bottom space of the bottom spray mechanism becomes smaller, which increases the pressure at the bottom of the bottom spray mechanism. At the same time, the gas ejected from the jet box rises and is compressed. At this time, the compressed gas moves upward along the blocking ring 1 to the through hole 1, and then sprays the iron filings deposited in the deposition tank upward along the spiral structure spray channel, pushing the iron filings upward. Afterwards, according to the same principle as above, the spray assembly sprays the iron filings upward and mixes them thoroughly with the solution.

[0011] As a further improvement to the above solution, the rotary stirring assembly includes multiple sets of active tubes with openings at the top that are slidably sleeved with the support plate; a first annular transfer ring that is slidably sleeved on the outer ring of the active tube and slides along the length of the active tube; a first transfer channel that is set in the inner ring of the first transfer ring and is set along the length of the active tube; a first connecting rod that is slidably connected to the first transfer channel and fixedly connected to the first transfer ring; a second transmission rod that is set inside the active tube and fixedly connected to the first connecting rod; a second push-pull rod that is fixedly connected to the outer ring of the topmost first transfer ring; and a spray pipe that communicates with the outer ring of the active tube is fixedly sleeved on it.

[0012] As a further improvement to the above solution, the spraying assembly includes a partition plate fixedly sleeved with the movable tube, a mesh plate disposed at the bottom of the partition plate and movably sleeved with the rotating stirring assembly, a spraying mechanism and a sealing mechanism disposed on the partition plate.

[0013] As a further improvement to the above solution, the spraying mechanism includes a deposition tank arrayed on the top of the partition plate, a through hole 1 opened at the bottom of the deposition tank and the pipe partition plate, a connecting column 1 disposed inside the through hole 1 and fixedly connected to the top of the mesh plate, a spraying column fixedly connected to the top of the connecting column 1 and slidably sleeved with the through hole 1, a spraying channel arrayed on the outer ring of the spraying column in a spiral structure, a sealing block 1 with a frustum-shaped structure fixedly connected to one end of the spraying column extending out of the top of the through hole 1, a sealing ring 1 fixedly sleeved on the outer ring of the connecting column 1, and a blocking ring 1 fixedly sleeved on the inner ring of the through hole 1 for sealing the sealing ring.

[0014] As a further improvement to the above solution, the sealing mechanism includes multiple sets of through holes 2 penetrating the partition, an arc-shaped filter screen set at the top and bottom openings of the through holes 2 and fixed to the partition, and a connecting post 2 set at the bottom of the partition and slidably sleeved with the bottom filter screen. The bottom of the connecting post 2 is fixedly connected to the top of the screen plate, and a sealing block 2 for sealing the through holes 2 is installed at one end of the connecting post 2 that extends out of the top of the bottom filter screen.

[0015] Through the above technical solution, the transmission rod moves up and down, thereby causing the first adapter ring to drive the mesh plate to move up and down. When the mesh plate moves, the second connecting column moves, and then the second sealing block performs the sealing and opening operation on the second through hole. At the same time, the first connecting column moves, and the first sealing block on it moves relative to the first sealing ring. When the first sealing block contacts the first sealing ring, the sealing of the first through hole is completed. When the first sealing block moves away from the first sealing ring, the opening of the first through hole is completed.

[0016] As a further improvement to the above solution, the feeding unit includes a storage box fixedly connected to the main body, a first conveying pipe fixedly connected to the bottom of the storage box extending into the main body, a second conveying pipe slidably connected to the bottom of the first conveying pipe, and a third conveying pipe fixedly connected to the bottom of the second conveying pipe and fixedly connected to the movable sleeve.

[0017] Through the above technical solution, the iron filings are transported along the storage box, conveying pipe one, conveying pipe two, and conveying pipe three to the storage box.

[0018] As a further improvement to the above scheme, an air inlet pipe is installed at the bottom of the jet box, a spray hole is passed through the jet box, a discharge pipe fixed to the main body is installed on the inner ring of the bottom sleeve, an air inlet pipe connected to the inner ring of the rotating tube is fixedly sleeved on the top of the main body, a liquid inlet pipe and an exhaust pipe are fixedly connected to the top of the bearing plate, and a heating pipe is fixedly connected to the outer ring of the movable tube.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention employs a layered iron filings method for secondary oxidation, effectively preventing large amounts of iron filings from accumulating at the bottom of the reaction vessel and avoiding situations where iron filings accumulate, resulting in slow reaction rates and incomplete reactions.

[0020] The gas introduced for oxidation is pressurized by an upward and downward extrusion method, which sprays the precipitated iron filings upward to fully contact and mix with the solution, thereby improving the efficiency and quality of secondary oxidation of iron filings.

[0021] The solution and iron filings are mixed by using an up-and-down squeezing and oscillation method and stirring to increase the mixing contact time, so that the oxidizing gas can fully contact the solution, improve the reaction environment, and increase the reaction rate and quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partially enlarged structural diagram of point A provided by the present invention; Figure 3 This is a partially enlarged structural diagram of point B provided by the present invention; Figure 4 This is a schematic diagram of the structure of the rotary stirring assembly provided by the present invention; Figure 5 This is a schematic diagram of the spray assembly provided by the present invention; Figure 6 This is a schematic diagram of the unfolded plane of adjustment unit one and adjustment unit two provided by the present invention.

[0023] Explanation of key symbols: 1. Main body; 2. Storage component; 3. Rotary stirring component; 4. Adjustment component; 5. Spraying component; 21. Bottom sleeve; 22. Movable tube; 23. Support plate; 24. Top sleeve; 25. Feeding unit; 26. Jet box; 27. Adapter plate; 28. Push-pull rod II; 29. ​​Adjustment unit I; 210. Adjustment unit II; 211. Top retaining groove II; 212. Downward pressing groove II; 213. Bottom retaining groove II 214 Upper Pressure Groove II, 291 Upper Pressure Groove I, 292 Top Holding Groove I, 293 Lower Pressure Groove I, 294 Bottom Holding Groove I, 31 Active Pipe, 32 Adapter Ring I, 33 Adapter Channel I, 34 Connecting Rod I, 35 Conducting Rod, 36 Nozzle, 41 Rotating Pipe, 42 Gear Ring I, 43 Gear I, 44 Gear Ring II, 45 Push-Pull Rod I, 51 Partition Plate, 52 Spray Mechanism, 53 Sealing Mechanism, 54 Mesh Plate, 521 Sedimentation Tank, 522 Connecting Column I, 523 Sealing Ring I, 524 Blocking Ring I, 525 Spray Column, 526 Sealing Block I, 527 Spray Channel, 531 Through Hole II, 532 Filter Screen, 533 Connecting Column II, 534 Sealing Block II. Detailed Implementation

[0024] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] Example 1

[0026] Please combine Figures 1-6 A reactor for preparing iron oxide by precipitation in this embodiment includes a hollow main body 1, a storage component 2 fixed inside the main body 1, an injection component 5 fixedly connected along the length of the storage component 2, an adjustment component 4 disposed on the top of the storage component 2 and fixedly connected to the main body 1, and a rotary stirring component 3 disposed at the bottom of the adjustment component 4 and connected to the storage component 2 and the injection component 5. The adjustment assembly 4 includes a rotating tube 41 that is movably sleeved with the inner side wall of the top of the main body 1, a gear ring 42 fixedly sleeved on the outer ring of the rotating tube 41, a gear 43 meshing with one side of the gear ring 42 and movably sleeved with the inner side wall of the top of the main body 1, a gear ring 44 meshing with one side of the gear ring 43 and movably sleeved with the inner side wall of the top of the main body 1, and an L-shaped push-pull rod 45 fixedly connected to the bottom of the gear ring 44. The push-pull rod 45 is slidably connected to the storage assembly 2. A drive unit 1 fixedly connected to the main body 1 is installed on one side of the rotating tube 41. The storage component 2 includes a bottom sleeve 21 with an annular structure fixed to the inner wall of the bottom of the main body 1, a movable tube 22 slidably sleeved on the inner ring of the top of the bottom sleeve 21, a top sleeve 24 slidably sleeved on the outer ring of the top of the movable tube 22 and fixed to the inner wall of the top of the main body 1, a support plate 23 fixedly sleeved on the inner ring of the movable tube 22 and movably sleeved with the active tube 31 of the rotary stirring component 3, a transition plate 27 with an annular structure fixed to the top of the support plate 23, an adjustment unit 29 with an annular structure opened in the inner ring of the transition plate 27, a push-pull rod 28 slidably connected to the adjustment unit 29 and connected to the transition ring 32 of the rotary stirring component 3, and an adjustment unit 210 with an annular structure set on the top of the support plate 23 and located in the inner ring of the movable tube 22, and the adjustment unit 210 is slidably connected to the push-pull rod 45. The inner ring of the bottom sleeve 21 is equipped with an air jet box 26 fixed to the main body 1, and the outer ring of the movable tube 22 is equipped with a feeding unit 25 fixed to the main body 1. The drive unit includes a gear 2 that meshes with a gear ring 42, a rotating shaft 1 that is fixedly sleeved on the inner ring of the gear 2 and movably sleeved on the main body 1, and a motor 1 that is fixedly connected to one end of the rotating shaft 1 that extends out of the top of the main body 1. The inner ring of the rotating tube 41 is provided with a sliding groove along its length, and the cross-section of the sliding groove is a regular polygonal structure. The sliding groove is slidably fitted with a guide ring that is fixedly fitted with the active tube 31 of the rotating stirring assembly 3. Adjustment unit 1 29 includes an upper pressure groove 291, a top retaining groove 292, a lower pressure groove 293 and a bottom retaining groove 294 that are sequentially connected on the adapter plate 27. Adjustment unit 210 includes a top retaining groove 211, a lower pressure groove 212, a bottom retaining groove 213 and an upper pressure groove 214 that are sequentially connected on the inner ring of the movable tube 22. The feeding unit 25 includes a storage box fixedly connected to the main body 1, a first conveying pipe fixedly connected to the bottom of the storage box extending into the main body 1, a second conveying pipe slidably connected to the bottom of the first conveying pipe, and a third conveying pipe fixedly connected to the bottom of the second conveying pipe and fixedly connected to the movable pipe 22.

[0027] The implementation principle of a reactor for preparing iron oxide by precipitation in this embodiment is as follows: the adjustment component 4 is started, which drives the rotating stirring component 3 to rotate and perform oxygen supply and stirring operation on the reaction solution. At the same time, the moving tube 22 is pushed up and down to move back and forth. When it moves up and down, the spray component 5 sprays oxygen to the solution. The iron filings are added in layers and sprayed upward to push the iron filings to float. The precipitated iron filings are sprayed upward so that the iron filings react with the solution quickly.

[0028] Example 2

[0029] Based on Embodiment 1, this embodiment is further improved in that: the rotary stirring assembly 3 includes multiple sets of active tubes 31 with openings at the top that are slidably sleeved with the support plate 23; a ring-shaped transition ring 32 that is slidably sleeved on the outer ring of the active tube 31 and slides along the length of the active tube 31; a transition channel 33 that is disposed in the inner ring of the transition ring 32 and disposed along the length of the active tube 31; a connecting rod 34 that is slidably connected to the transition channel 33 and fixedly connected to the transition ring 32; a transmission rod 35 disposed inside the active tube 31 and fixedly connected to the connecting rod 34; a push-pull rod 28 that is fixedly connected to the outer ring of the topmost transition ring 32; and a spray pipe 36 that communicates with the outer ring of the active tube 31 is fixedly sleeved on the outer ring.

[0030] Example 3

[0031] Based on Embodiment 1, this embodiment is further improved in that: the spraying assembly 5 includes a partition 51 fixedly sleeved with the movable tube 22, a mesh plate 54 disposed at the bottom of the partition 51 and movably sleeved with the rotating stirring assembly 3, a spraying mechanism 52 disposed on the partition 51, and a sealing mechanism 53. The spraying mechanism 52 includes a deposition tank 521 arrayed on the top of the partition plate 51, a through hole 1 of the pipe partition plate 51 at the bottom of the deposition tank 521, a connecting column 522 disposed inside the through hole 1 and fixedly connected to the top of the mesh plate 54, a spraying column 525 fixedly connected to the top of the connecting column 522 and slidably sleeved with the through hole 1, a spraying channel 527 arrayed on the outer ring of the spraying column 525 in a spiral structure, a sealing block 526 of a frustum-shaped structure fixedly connected to one end of the spraying column 525 extending out of the top of the through hole 1, a sealing ring 523 fixedly sleeved on the outer ring of the connecting column 522, and a blocking ring 524 fixedly sleeved on the inner ring of the through hole 1 for sealing the sealing ring 523. The sealing mechanism 53 includes multiple sets of through holes 531 penetrating the partition 51, an arc-shaped filter screen 532 fixedly connected to the partition 51 at the top and bottom openings of the through holes 531, and a connecting post 533 fixedly connected to the bottom filter screen 532 at the bottom of the partition 51. The bottom of the connecting post 533 is fixedly connected to the top of the screen plate 54, and a sealing block 534 for sealing the through holes 531 is installed at one end of the connecting post 533 that extends out of the top of the bottom filter screen 532.

[0032] Example 4

[0033] An air inlet pipe is installed at the bottom of the jet box 26, and a spray hole is passed through the jet box 26. A discharge pipe fixed to the main body 1 is installed on the inner ring of the bottom sleeve 21. An air inlet pipe connected to the inner ring of the rotating tube 41 is fixedly sleeved on the top of the main body 1. An inlet pipe and an exhaust pipe are fixedly connected to the top of the support plate 23. A heating tube is fixedly connected to the outer ring of the movable tube 22. A control box is installed on one side of the main body 1. A controller is installed inside the control box. A temperature sensor and a pH sensor are embedded inside the movable tube 22. A power interface, a data interface, a display screen, and a power opening are installed on one side of the control box. The controller is connected to the motor, the heating tube, the temperature sensor, the pH sensor, the power interface, the data interface, the display screen, and the power opening.

[0034] Working principle: First, ferrous sulfate solution and sodium hydroxide solution are introduced into the interior of the movable tube 22 through the liquid inlet pipe at the top of the support plate 23 to carry out the seed crystal preparation reaction. After the seed crystal preparation reaction is completed, the iron filings for the second-step oxidation are sequentially introduced from the feeding unit 25 into the spray assembly 5 and the movable tube 22 to form a reaction cavity for oxidation reaction. During the seed crystal preparation and the second-step oxidation reaction, the adjustment assembly 4 is started, which drives the rotating stirring assembly 3 to rotate and perform oxygen supply and stirring operation on the reaction solution. At the same time, the movable tube 22 is pushed up and down. When it moves up and down, the spray assembly 5 sprays oxygen into the solution. The iron filings are added in layers and sprayed upward to push the iron filings to float. The precipitated iron filings are sprayed upward so that the iron filings react with the solution quickly. When the adjustment component 4 is started, the motor starts, the gear 2 rotates, and then the gear ring 42 rotates, driving the rotating tube 41 to rotate. The rotating tube 41 drives the rotating stirring component 3 to rotate, stirring the reaction solution. At the same time, the gear ring 42 drives the gear 43 to rotate, and then the gear ring 44 rotates. At this time, the push-pull rod 45 moves with the gear ring 44. When the push-pull rod 45 moves, under the guidance and compression of the adjustment unit 210, the movable tube 22 moves up and down. At this time, the spray component 5 moves with the movable tube 22. At the same time, when the rotating stirring component 3 rotates, the push-pull rod 28 also moves up and down under the action of the adjustment unit 29 on the adapter plate 27. When the push-pull rod 28 moves up and down, it drives the adapter ring 32 to move, and then drives the connecting rod 34 to move, causing the transmission rod 35 to move up and down. This causes the adapter ring 32 to drive the mesh plate 54 to move up and down to adjust the spray state of the spray component 5. like Figure 6As shown, when the push-pull rod 45 moves along the top holding groove 211, the push-pull rod 28 moves along the upper pressing groove 291. At this time, the push-pull rod 28 moves upward relative to the adapter plate 27 while rotating, which drives the adapter ring 32 to move upward. Then the transmission rod 35 moves upward relative to the active tube 31. At this time, the mesh plate 54 connected to the rotating ring 32 moves upward relative to the partition plate 51. Then the sealing block 534 moves upward to seal the through hole 531. The sealing block 526 moves upward and does not seal the through hole 1. The solution at the top of the partition plate 51 cannot move downward from the through hole 531, and the gas at the bottom of the partition plate 51 can be sprayed upward along the through hole 1. Afterwards, when the push-pull rod 45 moves along the holding groove 211 to the pressing groove 212 and then moves along the pressing groove 212, the movable tube 22 moves downward relative to the push-pull rod 45. When the movable tube 22 moves downward, the bottom space of the bottom spray mechanism 52 becomes smaller, which increases the pressure at the bottom of the bottom spray mechanism 52. At the same time, the gas ejected from the spray box 26 rises and is compressed. At this time, the compressed gas moves upward along the blocking ring 524 to the through hole 1, and then sprays the iron filings deposited in the deposition tank 521 upward along the spiral structure spray channel 527, pushing the iron filings upward. Afterwards, according to the same principle as above, the spray assembly 5 sprays the iron filings upward and mixes them thoroughly with the solution. Subsequently, using the same steps as above, when the injection assembly 5 moves upward in the active tube 22, the injection mechanism 52 closes and the sealing mechanism 53 opens, so that the reaction solution and gas flow normally in the upper and lower positions of the injection assembly 5. At the same time, the gas delivered from the top air inlet pipe 2 of the main body 1 is delivered downward along the rotating tube 41 to the active tube 31, and then sprayed out from the nozzle 36 for oxygen supply and oxidation. This design first employs a layered approach to the secondary oxidation process, effectively preventing iron filings from accumulating at the bottom of the reaction vessel and avoiding slow or incomplete reactions. Next, an upward-squeezing method is used to pressurize the introduced oxidation gas, which then sprays the precipitated iron filings upwards to ensure thorough contact and mixing with the solution, thus improving the efficiency and quality of the secondary oxidation. Finally, the design utilizes a combination of upward-squeezing, shaking, and stirring to further mix the solution and iron filings, increasing the contact time and ensuring sufficient contact between the oxidizing gas and the solution. This improves the reaction environment and enhances both the reaction rate and quality.

[0035] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A reactor for the production of iron oxide by the precipitation method, characterized in that, It includes a hollow main body, a storage component fixed inside the main body, a jetting component fixed along the length of the storage component, an adjustment component set on top of the storage component and fixed to the main body, and a rotary stirring component set at the bottom of the adjustment component and connected to the storage component and the jetting component. The adjustment assembly includes a rotating tube that is movably sleeved with the inner sidewall of the top of the main body, a gear ring 1 fixedly sleeved on the outer ring of the rotating tube, a gear 1 meshing with one side of the gear ring 1 and movably sleeved with the inner sidewall of the top of the main body, a gear ring 2 meshing with one side of the gear ring 1 and movably sleeved with the inner sidewall of the top of the main body, and an L-shaped push-pull rod 1 fixedly connected to the bottom of the gear ring 2. The push-pull rod 1 is slidably connected to the storage assembly. A drive unit 1 fixedly connected to the main body is installed on one side of the rotating tube. The storage component includes a bottom sleeve with an annular structure fixed to the inner wall of the bottom of the main body, a movable tube slidably sleeved on the inner ring of the top of the bottom sleeve, a top sleeve slidably sleeved on the outer ring of the top of the movable tube and fixed to the inner wall of the top of the main body, a support plate fixedly sleeved on the inner ring of the movable tube and connected to the rotary stirring assembly, a transfer plate with an annular structure fixed to the top of the support plate, an adjustment unit 1 with an annular structure opened in the inner ring of the transfer plate, a push-pull rod 2 slidably connected to the adjustment unit 1 and connected to the rotary stirring assembly, and an adjustment unit 2 with an annular structure set on the top of the support plate and located in the inner ring of the movable sleeve, and the adjustment unit 2 is slidably connected to the push-pull rod 1. An air jet box fixed to the main body is installed in the inner ring of the bottom sleeve, and a feeding unit fixed to the main body is installed in the outer ring of the movable sleeve. The first adjustment unit includes an upper pressure groove, a top retaining groove, a lower pressure groove, and a bottom retaining groove that are sequentially connected on the adapter plate. The second adjustment unit includes a top retaining groove, a lower pressure groove, a bottom retaining groove, and an upper pressure groove that are sequentially connected on the inner ring of the movable sleeve. The spraying assembly includes a partition plate fixedly sleeved with the movable tube, a mesh plate disposed at the bottom of the partition plate and movably sleeved with the rotary stirring assembly, a spraying mechanism and a sealing mechanism disposed on the partition plate; The spraying mechanism includes a deposition tank arrayed on the top of the partition plate, a through hole 1 at the bottom of the deposition tank and the partition plate, a connecting column 1 located inside the through hole 1 and fixed to the top of the mesh plate, a spraying column fixed to the top of the connecting column 1 and slidably sleeved with the through hole 1, a spraying channel arrayed on the outer ring of the spraying column in a spiral structure, a sealing block 1 with a frustum-shaped structure fixed to one end of the spraying column extending out of the top of the through hole 1, a sealing ring 1 fixedly sleeved on the outer ring of the connecting column 1, and a blocking ring 1 fixedly sleeved on the inner ring of the through hole 1 for sealing the sealing ring.

2. A reactor for the preparation of iron oxide by a precipitation process according to claim 1, characterized in that The drive unit includes a gear 2 that meshes with a gear ring 1, a rotating shaft 1 that is fixedly sleeved on the inner ring of the gear 2 and movably sleeved with the main body, and a motor 1 that is fixedly connected to one end of the rotating shaft 1 that extends out of the top of the main body.

3. A reactor for the preparation of iron oxide by a precipitation process according to claim 1, characterized in that The inner ring of the rotating tube is provided with a groove along its length, and the cross-section of the groove is a regular polygon. The groove is slidably fitted with a guide ring that is fixedly fitted with the rotating stirring assembly.

4. The reactor for preparing iron oxide by precipitation as described in claim 1, characterized in that, The rotary stirring assembly includes multiple sets of active tubes with openings at the top that are slidably sleeved with the support plate; a first annular transfer ring that is slidably sleeved on the outer ring of the active tube and slides along the length of the active tube; a first transfer channel that is set in the inner ring of the first transfer ring and is set along the length of the active tube; a first connecting rod that is slidably connected to the first transfer channel and fixedly connected to the first transfer ring; a second transmission rod that is set inside the active tube and fixedly connected to the first connecting rod; a second push-pull rod that is fixedly connected to the outer ring of the topmost first transfer ring; and a spray pipe that communicates with the outer ring of the active tube is fixedly sleeved on the outer ring.

5. The reactor for preparing iron oxide by precipitation as described in claim 1, characterized in that, The sealing mechanism includes multiple sets of through holes 2 penetrating the partition plate, an arc-shaped filter screen set at the top and bottom openings of the through holes 2 and fixed to the partition plate, and a connecting post 2 set at the bottom of the partition plate and slidably sleeved with the bottom filter screen. The bottom of the connecting post 2 is fixedly connected to the top of the screen plate, and a sealing block 2 for sealing the through holes 2 is installed at one end of the connecting post 2 that extends out of the top of the bottom filter screen.

6. The reactor for preparing iron oxide by precipitation as described in claim 1, characterized in that, The feeding unit includes a storage box fixedly connected to the main body, a first conveying pipe fixedly connected to the bottom of the storage box extending into the main body, a second conveying pipe slidably connected to the bottom of the first conveying pipe, and a third conveying pipe fixedly connected to the bottom of the second conveying pipe and fixedly connected to the movable sleeve.

7. The reactor for preparing iron oxide by precipitation as described in claim 1, characterized in that, The bottom of the jet box is equipped with an air inlet pipe, the jet box has a spray hole, the inner ring of the bottom sleeve is equipped with a discharge pipe fixed to the main body, the top of the main body is fixedly sleeved with an air inlet pipe connected to the inner ring of the rotating tube, the top of the support plate is fixedly connected with a liquid inlet pipe and an exhaust pipe, and the outer ring of the movable tube is fixedly connected with a heating pipe.

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