Continuous drying device for high-purity manganese sulfate

Abstract

The application discloses a continuous drying device for high-purity manganese sulfate, which comprises a steam structure, a drying structure, a feeding structure, and a cyclone separator, wherein the drying structure comprises a straight pipe, at least one variable-diameter pipe and a first auger structure; the straight pipe is vertically arranged; the variable-diameter pipe is arranged at the top of the straight pipe; the first auger structure is arranged in the straight pipe; the upper end of the straight pipe is provided with a material inlet; the lower end of the straight pipe is provided with a steam port and a coarse material outlet; the feeding structure comprises a feeding hopper, a second auger structure and a third auger structure; the second auger structure is arranged in a downward inclination; one end of the second auger structure is connected with the material inlet, and the other end is connected with the feeding hopper; one end of the third auger structure is connected with the coarse material outlet, and the other end is connected with the second auger structure. The application can recycle tail gas, reduce the probability of impurity introduction, effectively crush large-particle materials by using steel balls, preheat the materials, and improve the drying efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of drying devices. More particularly, the present application relates to a continuous drying device for high-purity manganese sulfate. BACKGROUND

[0002] In the chemical industry and new energy material field, high-purity manganese sulfate as an important basic raw material, its preparation process has a high requirement on the purity and drying degree of the product. Patent publication No. CN210051114U discloses a drying device for manganese sulfate production, which comprises a heat source assembly, a drying assembly, a conveying assembly, a separation assembly, a dust removal assembly and an air induction assembly. The drying assembly comprises a first drying pipe, a second drying pipe, a second support and a transmission pipe. The top end of the second support is fixed with the second drying pipe, the top end of the second drying pipe is welded with the first drying pipe, and the flange on one side of the first drying pipe is fixed with the transmission pipe. When the wet material is introduced into the second drying pipe by the conveying assembly, the rotation of the shaft driven by the second motor drives the three material discs and three connecting rods on the shaft to rotate. At this time, the material is first introduced into the highest layer of the material disc, and then the wet material is evenly distributed by the scraper on the connecting rod. In the process of rotation, the excess material is sequentially introduced into the next material disc, thereby increasing the drying of the wet material and reducing the problem of material caking in the drying pipe. When the auger is used to convey the manganese sulfate, the manganese sulfate adheres to the auger, which reduces the conveying capacity of the auger. SUMMARY

[0003] An object of the present application is to solve at least the above problems and to provide at least the advantages to be described later.

[0004] Another object of the present application is to provide a continuous drying device for high-purity manganese sulfate, which can prevent the adhesion of manganese sulfate to the auger and maintain the stable material conveying capacity of the auger.

[0005] In order to achieve these objects and other advantages according to the present application, a continuous drying device for high-purity manganese sulfate is provided, which comprises a steam structure for providing steam for drying, a drying structure connected with the steam structure for drying the manganese sulfate material with the steam, a feeding structure for continuously providing the manganese sulfate material to be dried to the drying structure, a cyclone separator connected with the drying structure for collecting the manganese sulfate material, the drying structure comprising a straight pipe, at least one variable-diameter pipe and a first auger structure, the straight pipe being vertically arranged, the variable-diameter pipe being arranged at the top of the straight pipe, and the first auger structure being arranged in the straight pipe, the upper end of the straight pipe being provided with a material inlet, and the lower end of the straight pipe being provided with a steam outlet and a coarse material outlet.

[0006] The feeding structure comprises a feeding hopper, a second auger structure and a third auger structure, the second auger structure is arranged obliquely downward, one end of the second auger structure is connected with the material inlet, the other end is connected with the feeding hopper, one end of the third auger structure is connected with the coarse material outlet, the other end is connected with the second auger structure.

[0007] Wherein, a plurality of steel structure balls are circulated and rolled under the driving of the first auger structure, the second auger structure and the third auger structure.

[0008] Preferably, the first auger structure comprises:

[0009] A first motor is arranged below the straight pipe;

[0010] A first rotating shaft is rotatably fixed in the middle of the straight pipe, the first rotating shaft rotatably penetrates the bottom of the straight pipe and is connected with the output shaft of the first motor;

[0011] Auger leaves are arranged in a spiral shape on the outside of the first rotating shaft, the outer edge of the auger leaves abuts against the inner wall of the straight pipe.

[0012] Preferably, a plurality of through holes are arranged on the auger leaves, the diameter of the through holes is smaller than the diameter of the balls.

[0013] Preferably, the variable-diameter pipe is in an olive type structure.

[0014] Preferably, the steam structure comprises:

[0015] A steam superheater, the output end of which is connected with the steam outlet, the tail gas outlet of the cyclone separator is connected with the steam superheater through a first pipeline;

[0016] A steam generator is connected with the steam superheater through a second pipeline to provide steam for the steam superheater.

[0017] Preferably, the steam superheater comprises:

[0018] A steam heating structure is connected with the steam generator through a second pipeline;

[0019] An airflow heating structure is connected with the first induced draft fan through a third pipeline;

[0020] A tail gas heating structure is connected with the tail gas outlet of the cyclone separator through a first pipeline;

[0021] A collecting pipe is connected with the steam heating structure, the airflow heating structure and the tail gas heating structure respectively to collect steam, airflow and tail gas, the collecting pipe is connected with the steam outlet through a fourth pipeline, and a first flow valve is arranged on the fourth pipeline.

[0022] The shell part wraps the steam heating structure, the airflow heating structure, the tail gas heating structure and the collecting pipe;

[0023] The heating assembly is arranged in the shell part to heat the heat-conducting oil filled in the shell part.

[0024] The steam heating structure, the airflow heating structure and the tail gas heating structure are arranged in sequence, and the steam heating structure is close to the air outlet of the collecting pipe.

[0025] Preferably, the collecting pipe is connected with the straight pipe through a fifth pipeline, the fifth pipeline is connected with the straight pipe above the first auger structure, and a second flow valve is arranged on the fifth pipeline.

[0026] Preferably, a second induced draft fan is arranged on the first pipeline.

[0027] Preferably, the steam heating structure comprises at least one steam pipe, the airflow heating structure comprises at least one airflow pipe, and the tail gas heating structure comprises at least one tail gas pipe, the steam pipe, the airflow pipe and the tail gas pipe are in S-shaped structures, and first, second and third check valves are arranged at the inlets of the steam pipe, the airflow pipe and the tail gas pipe respectively.

[0028] Preferably, the steam pipe, the airflow pipe and the tail gas pipe are arranged side by side, and a plurality of layers of heat-conducting plates are arranged between the steam pipe, the airflow pipe and the tail gas pipe to connect and fix the steam pipe, the airflow pipe and the tail gas pipe.

[0029] The present application has at least the following advantages: first, the first auger structure is arranged in the middle and lower part of the straight pipe, which can avoid the accumulation of materials at the bottom of the straight pipe, and can also prolong the heating time of the materials during the downward rotation of the materials, so that the materials have enough heating time in the straight pipe and the drying efficiency is improved. Second, the steel balls are arranged in the first, second and third auger structures, the rotation of the auger structure drives the rotation of the steel balls, so that the blocky large particle materials are crushed by the friction and impact of the steel balls, and the heat carried by the steel balls can also preheat the materials in the second auger structure. Third, the tail gas discharged from the cyclone separator is subjected to superheating treatment by the steam superheater, and then reenters the straight pipe to heat the materials, which fully utilizes the heat carried by the tail gas, and the recycling of the tail gas can reduce the amount of introduced external airflow and the probability of introducing impurities by the introduced external airflow, thereby helping to maintain the high purity of manganese sulfate.

[0030] Other advantages, objects and features of the present application will be apparent from the following description, and will be understood by those skilled in the art through study and practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0031] Fig. 1 The structural schematic diagram of one technical solution of the present application is shown in the figure;

[0032] Fig. 2 The structural schematic diagram of the overheating structure of one technical solution of the present application is shown in the figure;

[0033] Fig. 3 The internal structural schematic diagram of the overheating structure of one technical solution of the present application is shown in the figure.

[0034] 1, straight pipe; 2, reducing pipe; 3, first auger; 31, first motor; 32, first rotating shaft; 4, feed hopper; 5, second auger; 6, third auger; 7, steam structure; 71, shell part; 72, airflow heating structure; 73, tail gas heating structure; 74, steam heating structure; 75, collecting pipe; 76, steam pipe; 77, tail gas pipe; 78, airflow pipe; 8, steam heater; 9, cyclone separator; 10, second induced draft fan; 11, first induced draft fan; 12, fourth pipeline; 13, fifth pipeline. DETAILED DESCRIPTION

[0035] The present application will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement the present application according to the description.

[0036] It should be understood that the terms such as "have", "contain" and "include" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0037] It should be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials can be obtained from commercial channels unless otherwise specified. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mount", "connect", "arrange" should be understood broadly, for example, it can be fixedly connected, arranged, or detachably connected, arranged, or integrally connected, arranged. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The orientations or positional relationships indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0038] As Figs. 1-3As shown, the present application provides a continuous drying device for high-purity manganese sulfate, which comprises a steam structure 7 for providing steam for drying, a drying structure connected with the steam structure 7 for drying manganese sulfate material with steam, a feeding structure for continuously providing manganese sulfate material to be dried to the drying structure, a cyclone separator 9 connected with the drying structure for collecting manganese sulfate material, the drying structure comprising a straight pipe 1, at least one variable-diameter pipe 2 and a first auger 3 structure, the straight pipe 1 being vertically arranged, the variable-diameter pipe 2 being arranged at the top of the straight pipe 1, and the first auger 3 structure being arranged in the straight pipe 1, the upper end of the straight pipe 1 being provided with a material inlet, and the lower end of the straight pipe 1 being provided with a steam port and a coarse material outlet;

[0039] The feeding structure comprises a feeding hopper 4, a second auger 5 structure and a third auger 6 structure, the second auger 5 structure being arranged obliquely downward, one end of the second auger 5 structure being connected with the material inlet, and the other end being connected with the feeding hopper 4, one end of the third auger 6 structure being connected with the coarse material outlet, and the other end being connected with the second auger 5 structure.

[0040] Wherein, a plurality of steel structure balls are circulated and rolled under the driving of the first auger 3 structure, the second auger 5 structure and the third auger 6 structure.

[0041] In the technical solution, the steam structure 7 is used to provide the required steam for drying. The structure can include steam generator, steam pipe 76, steam control valve and other components. The high-temperature steam generated by the steam generator is transported to the drying structure through the steam pipe 76, and the steam control valve is used to adjust the flow and pressure of the steam to meet the needs of the drying process. The straight pipe 1 is vertically arranged to accommodate the manganese sulfate material to be dried and allows the steam to pass through. The material of the straight pipe 1 should have good high-temperature resistance and corrosion resistance to ensure long-term stable operation. The reducing pipe 2 is arranged at the top of the straight pipe 1, which changes the flow direction of the steam, so that the steam and the material are fully mixed, the contact area between the steam and the material is increased, and the drying efficiency is improved. The shape and size of the reducing pipe 2 can be customized according to actual needs. The first auger 3 structure is arranged in the straight pipe 1, which transports the coarse material downward in the straight pipe 1 through rotating motion. The coarse material is heated during the downward transportation and enters the second auger 5 structure through the third auger 6 structure to preheat the material transported by the second auger 5 structure. Through the preheating of the material, it helps to achieve uniform drying of the material and prevent the material from accumulating or clogging in the straight pipe 1. The drive motor and reducer of the first auger 3 structure should be installed outside the straight pipe 1 and connected to the auger blades through a transmission shaft. The feed hopper 4 is used to store the manganese sulfate material to be dried and allows the material to flow into the second auger 5 structure by gravity. The second auger 5 structure is arranged inclined downward, one end of which is connected with the material inlet and the other end is connected with the feed hopper 4. Through rotating motion, the second auger 5 structure continuously and uniformly transports the material from the feed hopper 4 to the material inlet. One end of the third auger 6 structure is connected with the coarse material outlet and the other end is connected with the second auger 5 structure. The third auger 6 structure is used to transport the material output by the second auger 5 back to the first auger 3. A material inlet is arranged at the upper end of the straight pipe 1 to receive the manganese sulfate material to be dried from the feeding structure. The lower end of the straight pipe 1 is provided with a steam port and a coarse material outlet. The steam port is used to receive steam from the steam structure 7, and the coarse material outlet is used to discharge the blocky manganese sulfate material. In order to further improve the transportation efficiency and drying effect of the material, a plurality of steel structure balls are arranged in the first auger 3 structure, the second auger 5 structure and the third auger 6 structure. These balls roll in the auger structure under the push of the auger blades, which can press and crush the blocky material, and the impact of the steel balls on the auger blades can also prevent the material from adhering to the auger blades.

[0042] In use, first, the steam structure 7 generates high-temperature steam flow, and the steam flow is transported to the steam port of the drying structure through the steam pipe 76. The steam flow transports the second auger 5 to the small-particle-size material in the straight pipe 1 to the variable-diameter pipe 2 for drying. After the material is dried in the straight pipe 1 and the variable-diameter pipe 2, the mass of the material becomes lighter, and the material enters the cyclone separator 9 along with the airflow. The large-particle-size material is downwardly transported by the first auger 3 and is returned to the second auger 5 through the third auger 6. The large-particle-size material is crushed by the friction of the steel balls during the transportation process, and the impact of the steel balls also prevents the material from sticking to the auger blades. As can be seen from the above description of the structure and working principle, the continuous drying device for high-purity manganese sulfate has the advantages of simple structure, convenient operation, high drying efficiency, uniform material transportation, and the like.

[0043] In another technical solution, the first auger 3 comprises:

[0044] The first motor 31 is arranged below the straight pipe 1.

[0045] The first rotating shaft 32 is rotatably fixed to the middle part of the straight pipe 1, and the first rotating shaft 32 rotatably penetrates the bottom of the straight pipe 1 and is connected with the output shaft of the first motor 31.

[0046] The auger blades are arranged in a spiral shape on the outer side of the first rotating shaft 32, and the outer edges of the auger blades abut against the inner wall of the straight pipe 1.

[0047] In this technical solution, the airflow is difficult to blow the blocky and large-particle-size material out of the straight pipe 1 and into the variable-diameter pipe 2. The first auger 3 downwardly transports the blocky and large-particle-size material, and then the material is returned to the straight pipe 1 through the third auger 6 and the second auger 5. The large-particle-size material is crushed into small particles by the impact and friction of the steel balls during the transportation process of the auger. The part of the material entering the second auger 5 can also preheat the material in the second auger 5, which helps to increase the temperature of the material entering the straight pipe 1 and improve the drying efficiency.

[0048] In another technical solution, a plurality of through holes are arranged on the auger blades, and the diameters of the through holes are smaller than the diameter of the steel balls. The steam flow at the bottom flows upward through the through holes, thereby increasing the contact area between the steam flow and the material. The steam flow enters from the bottom of the straight pipe 1, blows the small-particle-size material to move upward along the auger blades of the first auger 3 in a spiral shape, and the large-particle-size material moves downward along the auger blades. The small-particle-size material moves upward in a spiral shape into the variable-diameter pipe 2 under the action of the airflow and is finally collected by the cyclone separator 9. The large-particle-size material is returned to the straight pipe 1 through the third auger 6 and the second auger 5.

[0049] In another technical solution, the variable-diameter pipe 2 has an olive-shaped structure. The variable-diameter pipe 2 with the olive-shaped structure can change the flow rate and flow direction of the steam airflow, so that the steam airflow fully contacts the material, thereby helping to improve the drying efficiency.

[0050] In another technical solution, the steam structure 7 comprises:

[0051] a steam superheater, an output end of which is connected with the steam port, and the tail gas port of the cyclone separator 9 is connected with the steam superheater through a first pipeline;

[0052] a steam generator connected with the steam superheater through a second pipeline to provide steam for the steam superheater.

[0053] In the technical solution, the cyclone separator 9 is used to separate solid particles in the gas. The tail gas port of the cyclone separator 9 is connected with the steam superheater through a first pipeline, so that the tail gas treated by the cyclone separator 9 can flow into the steam superheater for overheating treatment, and then re-enter the straight pipe 1 to heat the material. The steam generator is connected with the steam superheater through a second pipeline, which mainly provides sufficient steam for the steam superheater. The steam generator can contain heating elements or combustion chambers inside to heat water to boiling state to generate steam. The steam generator continuously provides steam for the steam superheater, and the cyclone separator 9 ensures that the gas entering the superheater is relatively pure, avoiding the accumulation of particulate impurities to cause pipe blockage or failure in the superheater.

[0054] In another technical solution, the steam superheater comprises:

[0055] a steam heating structure 74 connected with the steam generator through a second pipeline;

[0056] an air flow heating structure 72 connected with the first induced draft fan 11 through a third pipeline;

[0057] a tail gas heating structure 73 connected with the tail gas port of the cyclone separator 9 through a first pipeline;

[0058] a collecting pipe 75 connected with the steam heating structure 74, the air flow heating structure 72 and the tail gas heating structure 73 to collect steam, air flow and tail gas, the collecting pipe 75 being connected with the steam port through a fourth pipeline 12, and a first flow valve being arranged on the fourth pipeline 12;

[0059] a housing member 71 wrapping the steam heating structure 74, the air flow heating structure 72, the tail gas heating structure 73 and the collecting pipe 75;

[0060] a heating assembly arranged in the housing member 71 to heat the heat-conducting oil filled in the housing member 71;

[0061] In the technical solution, the steam heating structure 74, the air flow heating structure 72 and the tail gas heating structure 73 are arranged in sequence, and the steam heating structure 74 is close to the gas outlet of the collecting pipe 75.

[0062] In the technical solution, the steam, the airflow and the tail gas are heated by the corresponding heating structure, and then gathered in the collecting pipe 75 to form high-pressure and high-temperature unsaturated steam. When the high-pressure and high-temperature unsaturated steam enters the straight pipe 1, the material in the straight pipe 1 is heated and dried. The heating assembly can be an electric heating assembly. The external gas is cleaned and then enters the airflow heating structure through the first induced draft fan.

[0063] In another technical solution, the collecting pipe 75 is connected with the straight pipe 1 through the fifth pipeline 13, and the connection position of the fifth pipeline 13 with the straight pipe 1 is located above the first auger 3 structure. The second flow valve is arranged on the fifth pipeline 13.

[0064] In the technical solution, the high-temperature and high-pressure steam is introduced again above the first auger 3 structure to provide sufficient heat for further heating and drying of the small-particle material.

[0065] In another technical solution, the first pipeline is provided with the second induced draft fan 10. The second induced draft fan 10 is arranged to enhance the circulating flow of the airflow.

[0066] In another technical solution, the steam heating structure 74 includes at least one steam pipe 76, the airflow heating structure 72 includes at least one airflow pipe 78, and the tail gas heating structure 73 includes at least one tail gas pipe 77. The steam pipe 76, the airflow pipe 78 and the tail gas pipe 77 all have an S-shaped structure. First, second and third check valves are arranged at the inlets of the steam pipe 76, the airflow pipe 78 and the tail gas pipe 77 respectively. The outlets of the steam pipe 76, the airflow pipe 78 and the tail gas pipe 77 are connected with the collecting pipe 75. The S-shaped pipes increase the heating area, so that the steam, the airflow and the tail gas can be better heated.

[0067] In another technical solution, the steam pipe 76, the airflow pipe 78 and the tail gas pipe 77 are arranged side by side, and a plurality of layers of heat-conducting plates are arranged between the steam pipe 76, the airflow pipe 78 and the tail gas pipe 77 to connect and fix the steam pipe 76, the airflow pipe 78 and the tail gas pipe 77. The heat-conducting plates are used to connect the steam pipe 76, the airflow pipe 78 and the tail gas pipe 77, so that the temperatures of the steam pipe 76, the airflow pipe 78 and the tail gas pipe 77 are consistent, and the compactness of the structure is improved.

[0068] In another technical solution, a pressure sensing device is arranged at the top of the straight pipe 1. The pressure sensing device is connected with a controller, and the controller is connected with the first induced draft fan 11. The third pipeline is provided with a fourth check valve. When the pressure in the straight pipe 1 reaches a preset value, the first induced draft fan 11 stops working. The pressure sensor is arranged to control the air pressure in the straight pipe 1, so as to regulate the air pressure in the straight pipe 1 to maintain the stability of the air pressure in the straight pipe 1 and keep the particle size of the output material consistent.

[0069] In another technical solution, a branch pipe is arranged on the first pipe, an electrically controlled valve is arranged on the branch pipe, the electrically controlled valve is connected with the controller, and the straight pipe 1 is connected with the bag-type dust collector; wherein when the pressure in the straight pipe 1 exceeds a preset value, the controller controls the electrically controlled valve to open to discharge part of the airflow to reduce the pressure in the straight pipe 1.

[0070] While embodiments of the application have been disclosed in connection with the above description and drawings, it will be appreciated that modifications can be made without departing from the intended scope of the application as defined by the appended claims.

Claims

1. A continuous drying apparatus for high-purity manganese sulfate, comprising a steam structure for providing steam for drying, a drying structure connected to the steam structure for drying manganese sulfate material using steam, a feed structure for continuously supplying the manganese sulfate material to be dried to the drying structure, and a cyclone separator connected to the drying structure for collecting the manganese sulfate material, characterized in that, The drying structure includes a straight pipe, at least one reducing pipe, and a first auger structure. The straight pipe is vertically arranged, the reducing pipe is located at the top of the straight pipe, and the first auger structure is located inside the straight pipe. The upper end of the straight pipe is provided with a material inlet, and the lower end of the straight pipe is provided with a steam outlet and a coarse material outlet. The feeding structure includes a feeding hopper, a second auger structure, and a third auger structure. The second auger structure is inclined downwards, with one end connected to the material inlet and the other end connected to the feeding hopper. One end of the third auger structure is connected to the coarse material outlet, and the other end is connected to the second auger structure. Among them, several steel structure ball bearings circulate and roll under the drive of the first auger structure, the second auger structure, and the third auger structure; The first auger structure includes: The first motor is located below the straight pipe; The first rotating shaft is rotatably fixed in the middle of the straight tube, and the first rotating shaft rotatably passes through the bottom of the straight tube and is connected to the output shaft of the first motor. The blade is spirally arranged on the outside of the first rotating shaft, and the outer edge of the blade abuts against the inner wall of the straight tube. The blade is provided with several through holes, the diameter of which is smaller than the diameter of the ball. The steam structure includes: A steam superheater, the output end of which is connected to a steam port, and the tail gas port of the cyclone separator is connected to the steam superheater through a first pipe; A steam generator, which is connected to a steam superheater via a second pipe to supply steam to the steam superheater; The steam superheater includes: A steam heating structure, which is connected to a steam generator via a second pipe; The airflow heating structure is connected to the first induced draft fan via a third pipe; The exhaust gas heating structure is connected to the exhaust gas port of the cyclone separator through a first pipe; A collection pipe is connected to a steam heating structure, an airflow heating structure and an exhaust gas heating structure respectively to collect and mix steam, airflow and exhaust gas. The collection pipe is connected to a steam port through a fourth pipe, and a first flow valve is installed on the fourth pipe. The housing component encloses the steam heating structure, the airflow heating structure, the exhaust gas heating structure, and the manifold. A heating component is disposed within a housing component to heat the heat-conducting oil filling the housing component; The airflow heating structure, exhaust gas heating structure, and steam heating structure are arranged in sequence, with the steam heating structure located near the outlet of the manifold.

2. The continuous drying apparatus for high-purity manganese sulfate according to claim 1, characterized in that, The reducing pipe has an olive-shaped structure.

3. The continuous drying apparatus for high-purity manganese sulfate according to claim 1, characterized in that, The manifold is connected to the straight pipe via the fifth pipe. The connection between the fifth pipe and the straight pipe is located above the first auger structure. A second flow valve is installed on the fifth pipe.

4. The continuous drying apparatus for high-purity manganese sulfate according to claim 1, characterized in that, A second induced draft fan is installed on the first pipeline.

5. The continuous drying apparatus for high-purity manganese sulfate according to claim 1, characterized in that, The steam heating structure includes at least one steam pipe, the airflow heating structure includes at least one airflow pipe, and the exhaust gas heating structure includes at least one exhaust gas pipe. The steam pipe, airflow pipe, and exhaust gas pipe are all S-shaped. A first check valve is provided at the inlet of the steam pipe, a second check valve is provided at the inlet of the airflow pipe, and a third check valve is provided at the inlet of the exhaust gas pipe.

6. The continuous drying apparatus for high-purity manganese sulfate according to claim 5, characterized in that, The steam pipe, airflow pipe, and exhaust pipe are arranged side by side, and several layers of heat-conducting plates are provided between the steam pipe, airflow pipe, and exhaust pipe to connect and fix them.

Images