Device for producing iron oxide powder through cold rolling acid regeneration

Abstract

The utility model discloses a device for producing iron oxide powder through cold rolling acid regeneration, and relates to the technical field of cold rolling acid regeneration iron oxide powder. The device for producing the iron oxide powder through cold rolling acid regeneration comprises a base, a sealing tank assembly is arranged on the upper surface of the base, a communicating assembly is arranged on the surface of the sealing tank assembly, and a pressure relief touch control assembly is arranged at the top of the sealing tank assembly. By means of the pressure relief touch control assembly and the spraying purification assembly, in the using process, when the internal pressure of the tank body is increased, the tank body can conduct pressure relief operation automatically, the air pump and the water pump can be controlled to work synchronously under the action of the pressure while pressure relief is conducted, and gas obtained after pressure relief is fed into the shell through the air pump; gas in the shell is adsorbed and filtered by the purified diluent through the water pump, so that emission of irritant gas and harmful gas is reduced, harm to physical and psychological health of workers in the using process is reduced, and meanwhile pollution to the atmospheric environment is also reduced.

Description

Technical Field

[0001] This utility model relates to the field of cold-rolled acid regeneration of iron oxide powder, specifically to an apparatus for producing iron oxide powder through cold-rolled acid regeneration. Background Technology

[0002] Cold-rolled pickled iron oxide powder is an important byproduct of the hydrochloric acid regeneration process in steel plants. In cold-rolled pickling plants, when steel plates are pickled with hydrochloric acid, the iron oxide on the plate surface reacts with the hydrochloric acid to form ferrous chloride or ferric chloride, which dissolves in the pickling solution. As the pickling process continues, the concentration of iron ions in the pickling solution increases, while the concentration of free HCl decreases accordingly. To maintain the concentration of free HCl in the pickling acid solution, the waste acid solution needs to be sent to an acid regeneration unit. In the acid regeneration unit, iron chlorides are calcined and oxidized, generating HCl gas and Fe2O3 particles. The HCl is absorbed to generate regenerated acid with a concentration of 18-20%, which is returned to the pickling line for recycling. Fe2O3 is then produced as iron oxide powder. The cold-rolled pickling regeneration process mainly consists of two parts: a silicon removal section and a calcination section. In the desiliconization process, an oxidation process has been added: 4Fe²⁺ + O₂ + 4H⁺ = 4Fe³⁺ + 2H₂O. This process consumes hydrogen ions, raises the pH value to some extent, reduces the amount of ammonia or ammonium carbonate used, and generates some ferric ions, prematurely producing some ferric hydroxide. This ferric hydroxide adsorbs elements such as silicon and aluminum in the acid solution, prolonging the reaction time and enhancing the impurity removal effect. During production, when the waste acid solution flows out of the leaching tower, the pH value of its free acid is around 1.5-2.0. The acid solution overflows into the ammonia reaction tank, and 20% ammonia solution is added to the ammonia reaction tank to raise the pH value to between 4.0 and 4.5. The apparatus for cold-rolled acid regeneration to produce iron oxide powder in this application is specifically an ammonia reaction tank used in this desiliconization process.

[0003] However, in the production process of this iron oxide powder, ammonia or ammonium carbonate is used to increase the pH value of the solution through an ammonia reaction. Both of these substances must be kept sealed during use. This process increases the pressure inside the reaction tank, and the tank cannot automatically depressurize. Furthermore, the irritating and harmful gases produced after depressurization cannot be purified or treated, which will harm the physical and mental health of workers and pollute the atmospheric environment. Utility Model Content

[0004] The purpose of this invention is to provide an apparatus for producing iron oxide powder by cold rolling acid regeneration, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an apparatus for producing iron oxide powder by cold rolling acid regeneration, comprising a base, a sealed tank assembly disposed on the upper surface of the base, a communication assembly disposed on the surface of the sealed tank assembly, a pressure relief touch control assembly disposed on the top of the sealed tank assembly, and a spray purification assembly disposed on one side of the pressure relief touch control assembly.

[0006] The sealed tank assembly includes a tank body fixedly mounted on a base, with a feeding pipe connected to the top of the tank body, and a sealing plug threadedly connected to the top of the feeding pipe.

[0007] The sealing tank assembly and connecting assembly facilitate sealing and feeding operations during use, as well as hoisting and moving the entire device, maintaining its stability and improving ease of use.

[0008] The pressure relief touch control assembly includes a sealed tube connected to the top of the tank, a pressure relief pipe connected inside the sealed tube, a return spring fixedly installed on the inner bottom wall of the pressure relief pipe, a piston fixedly installed on the top of the return spring, a piston ring fixedly installed inside the pressure relief pipe, a limit rod fixedly installed on the top of the pressure relief pipe, a baffle fixedly installed on the top of the limit rod, a touch switch fixedly installed on the bottom of the baffle, an air outlet pipe connected to the top of the sealed tube, an air pump connected to one end of the air outlet pipe, an air pump inlet connected to one end of the air outlet pipe, and an air supply pipe connected to the other end of the air pump.

[0009] The spray purification assembly includes a shell fixedly installed on the top of the tank. A mesh plate is fixedly installed inside the shell, and an adsorption plate is fixedly installed on the top of the mesh plate. One end of the air supply pipe passes through the top of the shell, the adsorption plate, and the mesh plate in sequence and extends to the bottom of the mesh plate. A water pump is fixedly installed on one side of the top of the shell. The outlet of the water pump is connected to a water outlet pipe. One end of the water outlet pipe passes through the top of the shell and extends into the interior of the shell. The end of the water outlet pipe inside the shell is connected to a spray head. The surface of the spray head is connected to a nozzle. The inlet of the water pump is connected to a circulating water inlet pipe. One end of the circulating water inlet pipe is connected to one side of the shell.

[0010] With the addition of a pressure relief touch control component and a spray purification component, the tank can automatically depressurize when the internal pressure increases during use. Simultaneously, the pressure controls the air pump and water pump to work synchronously. The depressurized gas is then pumped into the interior of the shell by the air pump, and the water pump uses a purification dilution solution to adsorb and filter the gas inside the shell. This reduces the emission of irritating and harmful gases, minimizing harm to the physical and mental health of workers during use, and also reducing pollution to the atmospheric environment.

[0011] Preferably, the bottom of the base is provided with a support limiting component, which includes support rods fixedly installed at the four corners of the bottom of the base. The bottom of the support rods is fixedly installed with a mounting plate, and the mounting plate has mounting holes. The mounting holes are oblong holes. The lower surface of the mounting plate has anti-slip texture. Adjacent support rods are fixedly connected by a pull rod.

[0012] By setting up support and limiting components, the device can be easily supported and positioned during use, which not only facilitates support but also improves the installation stability of the device, making it easier to use later. It also makes it easier for staff to operate and improves the efficiency of the device.

[0013] Preferably, the communication component further includes a cleaning pipe connected to the bottom of the tank, the surface of which is connected to a solenoid valve, the top of which is fixedly connected to the bottom of the tank.

[0014] With its cleaning pipe and solenoid valve, the system allows for easy cleaning of residual or contaminated liquids inside the tank during use, reducing the difficulty of cleaning and maintaining the tank's cleanliness.

[0015] Preferably, lifting blocks are fixedly installed on both sides of the tank body, and the upper surface of the lifting blocks is provided with grooves, and the inner bottom wall of the grooves is provided with lifting holes.

[0016] The lifting blocks facilitate lifting operations during use, thereby simplifying subsequent hoisting and installation and improving the ease of use of the device.

[0017] Preferably, the connecting component further includes a feed pipe connected to one side of the tank body, a discharge pipe connected to one side of the front surface of the tank body, a flange connected to one end of both the discharge pipe and the feed pipe, a flange hole provided on the flange, an observation hole provided on the front surface of the tank body, a glass plate embedded in the inner wall of the observation hole, and the surface of the glass plate being sealed to the inner wall of the observation hole.

[0018] The inlet and outlet pipes facilitate connection between the corresponding pipes during use, while the flanges facilitate installation and positioning, maintaining a tight seal during connection.

[0019] Preferably, the top of the sealing plug is hexagonal, and the surface of the sealing plug is provided with anti-slip texture.

[0020] The hexagonal sealing plug allows for easy loosening and tightening with a wrench during use.

[0021] Preferably, the piston is T-shaped, and the bottom of the piston is in contact with the top of the piston ring, the surface of the piston is slidably connected to the inner wall of the piston ring, the piston and the piston ring are adapted to each other, the surface of the piston is slidably connected to the inner wall of the pressure relief pipe, and the piston and the pressure relief pipe are adapted to each other.

[0022] By designing piston rings and pistons, the sealing between them is increased during use, while maintaining the airtightness of the device.

[0023] Preferably, both the adsorption plate and the mesh plate are provided with pipe holes for the gas delivery pipe to pass through, and the inner wall of the pipe hole is sealed to the surface of the gas delivery pipe. The bottom of the gas delivery pipe is close to the inner bottom wall of the shell, one end of the circulating water inlet pipe is located below the mesh plate, and one end of the circulating water inlet pipe is flush with the inner bottom wall of the shell.

[0024] The set mesh plate and adsorption plate can filter and adsorb the gas after depressurization during use. The adsorption plate is made of activated carbon adsorption material.

[0025] Preferably, a liquid filling pipe is connected to one side of the back of the housing, and a control valve is connected to the surface of the liquid filling pipe. One end of the control valve is connected to one side of the back of the housing. A cleaning and discharge pipe is connected to one side of the back of the housing below the liquid filling pipe, and a valve is connected to the surface of the cleaning and discharge pipe.

[0026] The addition tube allows for easy addition of diluent to the device during use, facilitating subsequent purification operations and liquid replacement.

[0027] Preferably, the top of the housing is connected to an exhaust pipe, and an inverted conical protective pipe is fixedly installed on the top of the exhaust pipe. The touch switch is electrically connected to the air pump and the water pump respectively.

[0028] The exhaust pipe and inverted cone-shaped protective pipe not only discharge the purified gas but also prevent dust or impurities from entering the interior of the casing through the exhaust pipe, facilitating normal use in the future.

[0029] Compared with the prior art, the beneficial effects of this utility model are:

[0030] (1) The device for producing iron oxide powder by cold rolling acid regeneration has a pressure relief control component and a spray purification component. During use, when the internal pressure of the tank increases, the tank can automatically perform pressure relief operation. At the same time as pressure relief, the air pump and water pump can be controlled to work synchronously under the action of pressure. The gas after pressure relief is sent into the interior of the shell by the air pump. The water pump uses the purification dilution liquid to adsorb and filter the gas in the shell, thereby reducing the emission of irritating and harmful gases, reducing the harm to the physical and mental health of the staff during use, and also reducing the pollution to the atmospheric environment.

[0031] (2) The device for producing iron oxide powder by cold rolling acid regeneration, through the set sealing tank assembly and connecting assembly, facilitates the sealing and feeding operation during use, and also facilitates the hoisting and moving operation of the whole device, maintaining the stability of the device and facilitating subsequent operation, thus improving the ease of use of the device.

[0032] (3) The device for producing iron oxide powder by cold rolling acid regeneration has a support and limiting component that facilitates the support and positioning of the device during use. This not only facilitates the support of the device, but also improves the installation stability of the device, making it easier to use in the future. It also makes it easier for the staff to operate the device and improves the efficiency of the device. Attached Figure Description

[0033] Figure 1 This is a first-view perspective three-dimensional cross-sectional structural diagram of the present invention;

[0034] Figure 2 This is a second-view perspective three-dimensional cross-sectional structural diagram of the present invention;

[0035] Figure 3 This is a first-view perspective three-dimensional structural diagram of the present invention;

[0036] Figure 4 This is a second-view perspective three-dimensional structural diagram of the present invention;

[0037] Figure 5 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0038] Figure 6 This utility model Figure 2 Enlarged schematic diagram of the structure at point B;

[0039] Figure 7 This utility model Figure 3 Enlarged schematic diagram of the structure at point C;

[0040] Figure 8 This utility model Figure 4 Enlarged schematic diagram of the structure at point D.

[0041] In the diagram: 1. Base; 2. Sealed tank assembly; 200. Tank body; 201. Feeding pipe; 202. Sealing plug; 203. Lifting block; 3. Connecting assembly; 300. Cleaning pipe; 301. Solenoid valve; 302. Feeding pipe; 303. Discharge pipe; 4. Pressure relief touch control assembly; 400. Sealing pipe; 401. Pressure relief pipe; 402. Return spring; 403. Piston; 404. Piston ring; 405. Limit rod; 406. Baffle; 407. Touch switch; 408. Vent pipe; 09. Air pump; 410. Air supply pipe; 5. Spray purification assembly; 500. Housing; 501. Mesh plate; 502. Adsorption plate; 503. Water pump; 504. Water outlet pipe; 505. Spray head; 506. Nozzle; 507. Circulating water inlet pipe; 508. Liquid filling pipe; 509. Control valve; 510. Cleaning discharge pipe; 511. Valve; 512. Exhaust pipe; 513. Inverted conical protective pipe; 6. Support and limit assembly; 600. Support rod; 601. Mounting plate; 602. Pull rod. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] Please see Figures 1-8 This utility model provides a technical solution: an apparatus for producing iron oxide powder by cold rolling acid regeneration, including a base 1, a sealing tank assembly 2 is provided on the upper surface of the base 1, a connecting assembly 3 is provided on the surface of the sealing tank assembly 2, a pressure relief touch control assembly 4 is provided on the top of the sealing tank assembly 2, and a spray purification assembly 5 is provided on one side of the pressure relief touch control assembly 4.

[0044] The sealed tank assembly 2 includes a tank body 200 fixedly mounted on a base 1. The top of the tank body 200 is connected to a feeding pipe 201, and a sealing plug 202 is threadedly connected to the top of the feeding pipe 201.

[0045] The sealing tank assembly 2 and the connecting assembly 3 facilitate sealing and feeding operations during use, as well as hoisting and moving the entire device, maintaining its stability and improving its ease of use.

[0046] The pressure relief touch control assembly 4 includes a sealing pipe 400 connected to the top of the tank 200, a pressure relief pipe 401 connected inside the sealing pipe 400, a return spring 402 fixedly installed on the inner bottom wall of the pressure relief pipe 401, a piston 403 fixedly installed on the top of the return spring 402, a piston ring 404 fixedly installed inside the pressure relief pipe 401, a limit rod 405 fixedly installed on the top of the pressure relief pipe 401, a baffle 406 fixedly installed on the top of the limit rod 405, a touch switch 407 fixedly installed on the bottom of the baffle 406, an air outlet pipe 408 connected to the top of the sealing pipe 400, an air pump 409 connected to one end of the air outlet pipe 408, an air inlet of the air pump 409 connected to one end of the air outlet pipe 408, and an air supply pipe 410 connected to the other end of the air pump 409.

[0047] The spray purification assembly 5 includes a housing 500 fixedly installed on the top of the tank 200. A mesh plate 501 is fixedly installed inside the housing 500. An adsorption plate 502 is fixedly installed on the top of the mesh plate 501. One end of the air supply pipe 410 passes through the top of the housing 500, the adsorption plate 502 and the mesh plate 501 in sequence and extends to the bottom of the mesh plate 501. A water pump 503 is fixedly installed on one side of the top of the housing 500. The outlet of the water pump 503 is connected to an outlet pipe 504. One end of the outlet pipe 504 passes through the top of the housing 500 and extends into the interior of the housing 500. The end of the outlet pipe 504 located inside the housing 500 is connected to a spray head 505. A nozzle 506 is connected to the surface of the spray head 505. The inlet of the water pump 503 is connected to a circulating water inlet pipe 507. One end of the circulating water inlet pipe 507 is connected to one side of the housing 500.

[0048] With the pressure relief touch control component 4 and the spray purification component 5, when the internal pressure of the tank 200 increases during use, the tank 200 can automatically perform a pressure relief operation. At the same time as the pressure is released, the air pump 409 and the water pump 503 can be controlled to work synchronously. The depressurized gas is sent into the interior of the shell 500 through the air pump 409, and the water pump 503 uses the purification dilution liquid to adsorb and filter the gas in the shell 500, thereby reducing the emission of irritating and harmful gases, reducing the harm to the physical and mental health of the staff during use, and also reducing the pollution to the atmospheric environment.

[0049] Please see Figure 4The base 1 has a support limiting component 6 at its bottom. The support limiting component 6 includes support rods 600 fixedly installed at the four corners of the bottom of the base 1. A mounting plate 601 is fixedly installed at the bottom of the support rods 600. The mounting plate 601 has mounting holes, which are oblong holes. The lower surface of the mounting plate 601 has anti-slip texture. Two adjacent support rods 600 are fixedly connected by a tie rod 602. The support limiting component 6 facilitates the support and positioning of the device during use, thereby improving the installation stability of the device, facilitating subsequent use, and making it easier for operators to operate, thus improving the efficiency of the device.

[0050] Please see Figure 4 The connecting component 3 also includes a cleaning pipe 300 connected to the bottom of the tank 200. A solenoid valve 301 is connected to the surface of the cleaning pipe 300. The top of the solenoid valve 301 is fixedly connected to the bottom of the tank 200. The cleaning pipe 300 and the solenoid valve 301 facilitate the cleaning of residual or contaminated liquid inside the tank 200 during use, thereby cleaning the inside of the tank 200 during use, reducing the difficulty of cleaning the tank 200 and maintaining the cleanliness of the tank 200.

[0051] Please see Figure 4 Lifting blocks 203 are fixedly installed on both sides of the tank body 200. The upper surface of the lifting block 203 is provided with a groove, and the inner bottom wall of the groove is provided with a lifting hole. The lifting blocks 203 facilitate the lifting operation during use, thereby facilitating subsequent lifting and installation operations and improving the ease of use of the device.

[0052] Please see Figure 4 The connecting component 3 also includes an inlet pipe 302 connected to one side of the tank body 200, and an outlet pipe 303 connected to one side of the front surface of the tank body 200. One end of both the outlet pipe 303 and the inlet pipe 302 is connected to a flange with a flange hole. An observation hole is provided on the front surface of the tank body 200. A glass plate is embedded in the inner wall of the observation hole, and the surface of the glass plate is sealed to the inner wall of the observation hole. The inlet pipe 302 and the outlet pipe 303 facilitate the connection between the corresponding pipes during use. At the same time, the flange facilitates the installation and positioning operation during use and maintains the sealing during connection.

[0053] Please see Figure 7 The top of the sealing plug 202 is hexagonal, and the surface of the sealing plug 202 is provided with anti-slip texture. The hexagonal sealing plug 202 is convenient to loosen and tighten with a wrench during use.

[0054] Please see Figure 5The piston 403 is T-shaped, and the bottom of the piston 403 fits against the top of the piston ring 404. The surface of the piston 403 is slidably connected to the inner wall of the piston ring 404. The piston 403 and the piston ring 404 are adapted to each other. The surface of the piston 403 is slidably connected to the inner wall of the pressure relief pipe 401. The piston ring 404 and the piston 403 are designed to increase the sealing between them during use, while maintaining the airtightness of the device.

[0055] Please see Figure 6 Both the adsorption plate 502 and the mesh plate 501 have holes for the gas delivery pipe 410 to pass through, and the inner wall of the hole is sealed to the surface of the gas delivery pipe 410. The bottom of the gas delivery pipe 410 is close to the inner bottom wall of the shell 500. One end of the circulating water inlet pipe 507 is located below the mesh plate 501, and the opening of the circulating water inlet pipe 507 is flush with the inner bottom wall of the shell 500. The mesh plate 501 and the adsorption plate 502 can filter and adsorb the gas after depressurization during use. The adsorption plate 502 is made of activated carbon adsorption material.

[0056] Please see Figures 6-7 A liquid inlet pipe 508 is connected to one side of the back of the housing 500. A control valve 509 is connected to the surface of the liquid inlet pipe 508. One end of the control valve 509 is connected to one side of the back of the housing 500. A cleaning discharge pipe 510 is connected to one side of the back of the housing 500 below the liquid inlet pipe 508. A valve 511 is connected to the surface of the cleaning discharge pipe 510. The liquid inlet pipe 508 is designed to facilitate the addition of diluent to the inside of the device during use, which is convenient for subsequent purification operations and also facilitates the replacement of liquid.

[0057] Please see Figures 1-8 The top of the housing 500 is connected to an exhaust pipe 512, and an inverted conical protective pipe 513 is fixedly installed on the top of the exhaust pipe 512. The touch switch 407 is electrically connected to the air pump 409 and the water pump 503 respectively. The exhaust pipe 512 and the inverted conical protective pipe 513 can not only discharge the purified gas, but also prevent dust or impurities from entering the interior of the housing 500 through the exhaust pipe 512, which facilitates normal use in the future.

[0058] Working Principle: During use, place the reaction vessel in a location away from direct sunlight. Then, install it on compacted or hardened ground using the mounting plate 601 to prevent tilting or sinking that could cause a safety accident. Connect the inlet pipe 302 and outlet pipe 303 to the corresponding equipment interfaces. Loosen the sealing plug 202 to open the feed pipe 201, allowing ammonia or ammonium carbonate to be added into the tank 200. Then, tighten the sealing plug 202. When a reaction occurs inside the tank 200 or when it is affected by temperature, the pressure inside the tank 200 increases. This pressure then pushes up the piston 403 on the return spring 402, causing... The top of piston 403 separates from piston ring 404, and the top of piston 403 moves to the outside of pressure relief pipe 401, and then pressure relief is performed. During the pressure relief process, piston 403 squeezes touch switch 407, thereby causing air pump 409 and water pump 503 to work. Air pump 409 draws the gas in sealing pipe 400 into the interior of housing 500, and then the water inside housing 500 performs preliminary filtration of the gas. At the same time, during the operation of water pump 503, the water in housing 500 is drawn into the interior of water outlet pipe 504, and sprayed through nozzle 505 and nozzle 506, thereby facilitating automatic filtration and spray purification during automatic pressure relief.

[0059] When it is necessary to replace the liquid inside the housing 500, the control valve 511 is opened, thereby releasing the liquid inside the housing 500 through the cleaning discharge pipe 510. Then, the valve 511 is closed and the control valve 509 is opened to add purified diluent into the housing 500 through the liquid addition pipe 508.

[0060] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0061] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. An apparatus for producing iron oxide powder by cold rolling acid regeneration, comprising a base (1), characterized in that: The upper surface of the base (1) is provided with a sealing tank assembly (2), the surface of the sealing tank assembly (2) is provided with a connecting assembly (3), the top of the sealing tank assembly (2) is provided with a pressure relief touch assembly (4), and a spray purification assembly (5) is provided on one side of the pressure relief touch assembly (4). The sealed tank assembly (2) includes a tank body (200) fixedly installed on a base (1), the top of the tank body (200) is connected to a feeding pipe (201), and the top of the feeding pipe (201) is threadedly connected to a sealing plug (202); The pressure relief touch control assembly (4) includes a sealing tube (400) connected to the top of the tank body (200), a pressure relief tube (401) connected inside the sealing tube (400), a return spring (402) fixedly installed on the inner bottom wall of the pressure relief tube (401), a piston (403) fixedly installed on the top of the return spring (402), a piston ring (404) fixedly installed inside the pressure relief tube (401), and a piston ring (404) fixedly installed on the top of the pressure relief tube (401). A limiting rod (405) is provided, with a baffle (406) fixedly installed on the top of the limiting rod (405) and a touch switch (407) fixedly installed on the bottom of the baffle (406). An air outlet pipe (408) is connected to the top of the sealing tube (400), and an air pump (409) is connected to one end of the air outlet pipe (408). The air inlet of the air pump (409) is connected to one end of the air outlet pipe (408), and the other end of the air pump (409) is connected to an air supply pipe (410). The spray purification assembly (5) includes a housing (500) fixedly installed on the top of the tank (200). A mesh plate (501) is fixedly installed inside the housing (500). An adsorption plate (502) is fixedly installed on the top of the mesh plate (501). One end of the gas supply pipe (410) passes through the top of the housing (500), the adsorption plate (502), and the mesh plate (501) in sequence and extends to the bottom of the mesh plate (501). A water pump (503) is fixedly installed on one side of the top of the housing (500). The outlet of the pump (503) is connected to an outlet pipe (504). One end of the outlet pipe (504) passes through the top of the housing (500) and extends into the interior of the housing (500). The end of the outlet pipe (504) inside the housing (500) is connected to a nozzle (505). The surface of the nozzle (505) is connected to a nozzle (506). The inlet of the water pump (503) is connected to a circulating water inlet pipe (507). One end of the circulating water inlet pipe (507) is connected to one side of the housing (500).

2. The apparatus for producing iron oxide powder by cold rolling acid regeneration according to claim 1, characterized in that: The base (1) is provided with a support limiting component (6) at its bottom. The support limiting component (6) includes support rods (600) fixedly installed at the four corners of the bottom of the base (1). The bottom of the support rods (600) is fixedly installed with an mounting plate (601). The mounting plate (601) has mounting holes, which are oblong holes. The lower surface of the mounting plate (601) has anti-slip texture. Two adjacent support rods (600) are fixedly connected by a pull rod (602).

3. The apparatus for producing iron oxide powder by cold rolling acid regeneration according to claim 1, characterized in that: The connecting component (3) also includes a cleaning pipe (300) connected to the bottom of the tank (200), and a solenoid valve (301) is connected to the surface of the cleaning pipe (300). The top of the solenoid valve (301) is fixedly connected to the bottom of the tank (200).

4. The apparatus for producing iron oxide powder by cold rolling acid regeneration according to claim 1, characterized in that: Lifting blocks (203) are fixedly installed on both sides of the tank (200). The upper surface of the lifting block (203) is provided with a groove, and the inner bottom wall of the groove is provided with a lifting hole.

5. The apparatus for producing iron oxide powder by cold rolling acid regeneration according to claim 1, characterized in that: The connecting component (3) also includes a feed pipe (302) connected to one side of the tank body (200), and a discharge pipe (303) connected to one side of the front surface of the tank body (200). One end of the discharge pipe (303) and the feed pipe (302) are connected to a flange, and a flange hole is provided on the flange. An observation hole is provided on the front surface of the tank body (200), and a glass plate is embedded in the inner wall of the observation hole. The surface of the glass plate is sealed to the inner wall of the observation hole.

6. The apparatus for producing iron oxide powder by cold rolling acid regeneration according to claim 1, characterized in that: The top of the sealing plug (202) is hexagonal, and the surface of the sealing plug (202) is provided with anti-slip texture.

7. The apparatus for producing iron oxide powder by cold rolling acid regeneration according to claim 1, characterized in that: The piston (403) is T-shaped, and the bottom of the piston (403) is in contact with the top of the piston ring (404). The surface of the piston (403) is slidably connected to the inner wall of the piston ring (404). The piston (403) and the piston ring (404) are adapted to each other. The surface of the piston (403) is slidably connected to the inner wall of the pressure relief pipe (401), and the piston (403) and the pressure relief pipe (401) are adapted to each other.

8. The apparatus for producing iron oxide powder by cold rolling acid regeneration according to claim 1, characterized in that: Both the adsorption plate (502) and the mesh plate (501) are provided with pipe holes for the gas delivery pipe (410) to pass through, and the inner wall of the pipe hole is sealed to the surface of the gas delivery pipe (410). The bottom of the gas delivery pipe (410) is close to the inner bottom wall of the shell (500). One end of the circulating water inlet pipe (507) is located below the mesh plate (501), and one end of the pipe opening of the circulating water inlet pipe (507) is flush with the inner bottom wall of the shell (500).

9. The apparatus for producing iron oxide powder by cold rolling acid regeneration according to claim 1, characterized in that: A liquid filling pipe (508) is connected to one side of the back of the housing (500), and a control valve (509) is connected to the surface of the liquid filling pipe (508). One end of the control valve (509) is connected to one side of the back of the housing (500). A cleaning discharge pipe (510) is connected to one side of the back of the housing (500) below the liquid filling pipe (508), and a valve (511) is connected to the surface of the cleaning discharge pipe (510).

10. The apparatus for producing iron oxide powder by cold rolling acid regeneration according to claim 1, characterized in that: The top of the housing (500) is connected to an exhaust pipe (512), and an inverted conical protective pipe (513) is fixedly installed on the top of the exhaust pipe (512). The touch switch (407) is electrically connected to the air pump (409) and the water pump (503) respectively.

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