Alumina dissolution device

Abstract

The utility model provides an aluminum oxide dissolving-out device. The aluminum oxide dissolving-out device comprises a body part, a stirring part, a heating part, a pressure detection part and a pressure relief part, the body part extends along the horizontal direction and is internally provided with a plurality of reaction cavities; the stirring parts are used for stirring materials in the corresponding reaction cavities; the heating parts are used for heating materials in the corresponding reaction cavities; the pressure detection part is arranged on the body part and is used for detecting the pressure of the internal space of the body part; the pressure relief part is used for releasing internal pressure of the reaction cavity and keeping the internal pressure of the reaction cavity stable. The utility model solves the problem that the cost of the dissolution device is increased because a plurality of vertical reaction kettles are connected in series and two adjacent reaction kettles need to be connected through a pipeline and a valve in the traditional process.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum oxide dissolution, in particular to an aluminum oxide dissolution device. Background Art

[0002] Compared to traditional bauxite extraction, the acid-based alumina extraction process from fly ash reduces damage to the original ecosystem, lowers energy consumption, and reduces carbon emissions, making it an environmentally friendly resource recycling technology. The acid-based alumina extraction process primarily involves the reaction of hydrochloric acid with the alumina in the fly ash, converting it into soluble aluminum chloride. For the acid-based alumina extraction process from high-alumina fly ash, vertical reactors have traditionally been used for dissolution.

[0003] To increase the alumina dissolution rate, traditional processes typically utilize multiple vertical reactors connected in series to extend the slurry residence time and ensure sufficient dissolution of the alumina. However, connecting multiple vertical reactors in series requires connecting adjacent reactors with pipes and valves, increasing the cost of the dissolution equipment. Utility Model Content

[0004] The utility model provides an aluminum oxide dissolution device to solve the problem of high cost in the prior art of realizing aluminum oxide dissolution by operating a plurality of vertical reactors in series.

[0005] The utility model provides an alumina dissolution device, which includes: a main body, extending in a horizontal direction, the main body having a plurality of reaction chambers, the plurality of reaction chambers being spaced apart along the length direction of the main body, two adjacent reaction chambers being connected to each other, and the reaction chambers including a head end reaction chamber and a tail end reaction chamber; the main body having a material inlet, a material outlet, an exhaust port and a safety valve port, the material inlet being connected to the head end reaction chamber, the material outlet being connected to the tail end reaction chamber, the exhaust port being connected to at least one reaction chamber, and the safety valve port being connected to at least one reaction chamber; a plurality of stirring parts, each reaction chamber correspondingly provided with a stirring part, the stirring part being used to stir the material in the corresponding reaction chamber; a plurality of heating parts, each reaction chamber correspondingly provided with a heating part, the heating part being used to heat the material in the corresponding reaction chamber; a pressure detection part being provided on the main body, the pressure detection part being used to detect the pressure in the internal space of the main body; a pressure relief part being provided at the safety valve port.

[0006] Furthermore, the main body includes: an outer shell made of stainless steel; and an inner liner arranged in the outer shell, wherein the inner liner has a plurality of reaction chambers.

[0007] Furthermore, the inner lining includes: a thermal insulation layer, the contour of the thermal insulation layer being adapted to the contour of the inner side of the outer shell, and the thermal insulation layer being disposed on the inner side of the outer shell; and a first acid-resistant and heat-resistant brick layer, the contour of the first acid-resistant and heat-resistant brick layer being adapted to the contour of the thermal insulation layer, and the first acid-resistant and heat-resistant brick layer being disposed on the inner side of the thermal insulation layer. The thermal insulation layer can effectively block the heat inside the alumina dissolution device, reduce heat loss to the outside, and maintain the temperature environment inside the alumina dissolution device. The first acid-resistant and heat-resistant brick layer has excellent acid and high temperature resistance, and can protect the thermal insulation layer and outer shell from corrosion under high temperature and acidic conditions.

[0008] Furthermore, the first acid-resistant and heat-resistant brick layer is provided with multiple layers from the outside to the inside, and two adjacent first acid-resistant and heat-resistant brick layers are connected by a first mud glue layer.

[0009] Furthermore, the thermal insulation layer is connected to the first acid-resistant and heat-resistant brick layer through a second mud glue layer.

[0010] The alumina dissolution apparatus further includes a plurality of baffles, spaced apart along the length of the main body to divide the space within the main body into multiple reaction chambers. Overflow channels are formed between the tops of the baffles and the main body, and two adjacent reaction chambers are connected via corresponding overflow channels. The layout of the multiple reaction chambers and the overflow channels creates a continuous but segmented flow path for the material within the main body. The material flows smoothly from one reaction chamber to the next through the overflow channels for the next reaction, ensuring the continuity of the alumina dissolution reaction.

[0011] Furthermore, the barrier portion includes a second acid-resistant and heat-resistant brick layer.

[0012] Furthermore, the heating part includes: a sleeve, the sleeve having a wire threading hole and a receiving cavity that are interconnected, the receiving cavity is filled with a heat-conducting medium, one end of the sleeve is inserted into the reaction cavity, and the end of the sleeve having the wire threading hole is located on the outside of the main body; a heating rod is arranged in the receiving cavity; a connecting wire, one end of the connecting wire extends into the receiving cavity through the wire threading hole and is connected to the heating rod, and the connecting wire is sealed and connected to the sleeve.

[0013] Furthermore, the sleeve includes a first sleeve and a second sleeve which are sleeved on each other from the inside to the outside. The first sleeve is made of stainless steel, and the second sleeve is made of tantalum-tungsten alloy.

[0014] Furthermore, an installation port is provided on the main body, the installation port is connected to the reaction chamber, and the sleeve is passed through the installation port to the reaction chamber. The alumina dissolution device also includes: a sealing part, which is provided between the installation port and the sleeve to seal the gap between the sleeve and the installation port.

[0015] The technical solution of this utility model incorporates multiple, longitudinally distributed and sequentially interconnected reaction chambers within the main body of the alumina dissolution apparatus. This allows for continuous alumina dissolution using a single device, reducing the number of equipment units and associated piping, valves, and instrumentation, thereby lowering production costs. Furthermore, each reaction chamber is equipped with an independent stirring and heating unit, enhancing the uniformity of material mixing and the controllability of reaction temperature, thereby improving the mass and heat transfer efficiency during the alumina dissolution process.

[0016] The exhaust port is used to discharge the gas generated during the reaction process. By exhausting the gas in time, the internal pressure of the reaction chamber can be reduced and maintained within an appropriate range, which is conducive to the smooth progress of the reaction. The pressure detection unit provided on the main body can monitor the pressure changes inside the reaction chamber in real time. When the pressure is abnormal, the pressure relief unit is used to relieve the pressure, reduce the pressure in the internal space of the reaction chamber, ensure that the pressure inside the reaction chamber is within a safe range, and improve the safety of the alumina dissolution device. Among them, the pressure relief unit can be set as a safety pressure relief valve, which is electrically connected to the pressure detection unit. When the pressure value detected by the pressure detection unit exceeds the preset value, the safety pressure relief valve automatically relieves the pressure; when the pressure value detected by the pressure detection unit meets the working standard, the safety pressure relief valve is closed.

[0017] The main body also features a stirring port and a temperature measuring port, through which the stirring unit is inserted into the reaction chamber. The temperature measuring port houses a temperature measuring device that monitors the temperature inside the reaction chamber in real time and adjusts the operating state of the heating unit based on the monitored temperature to maintain the temperature within the reaction chamber within the appropriate reaction temperature range. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 The figure shows the structure of the aluminum oxide dissolution device provided by the present invention;

[0020] Figure 2 The figure shows a schematic top view of the structure of the alumina dissolution device provided by the present invention;

[0021] Figure 3 A cross-sectional view of the alumina dissolution device provided by the present invention from a first perspective is shown;

[0022] Figure 4 Shown Figure 3 Cross-sectional view at point A;

[0023] Figure 5The figure shows the structure of the heating part of the alumina dissolution device provided by the present invention;

[0024] Figure 6 A cross-sectional view of the alumina dissolution device provided by the present invention from a second viewing angle is shown;

[0025] Figure 7 The figure shows the structural diagram of the stirring shaft and stirring blades provided by the present invention.

[0026] The above drawings include the following reference numerals:

[0027] 10. Body part;

[0028] 1001, material inlet; 1002, material outlet; 1003, exhaust port; 1004, safety valve port; 1005, installation port; 1006, stirring port; 1007, temperature measurement port;

[0029] 101, reaction chamber; 1011, head end reaction chamber; 1012, tail end reaction chamber;

[0030] 102. Shell;

[0031] 103, lining;

[0032] 1031, thermal insulation layer; 10311, rubber layer; 10312, thermal insulation putty;

[0033] 1032. First acid-resistant and heat-resistant brick layer;

[0034] 1033, first mud layer;

[0035] 1034, second mud layer;

[0036] 20. Stirring unit; 201. Stirring shaft; 202. Stirring blade; 203. Stirring motor;

[0037] 30. Heating unit;

[0038] 301, casing;

[0039] 3011, threading hole; 3012, accommodating cavity; 3013, heat-conducting medium; 3014, first sleeve; 3015, second sleeve;

[0040] 302, heating rod;

[0041] 303, connecting line;

[0042] 40. Pressure detection unit;

[0043] 50. Pressure relief unit;

[0044] 60. Baffle; 601. Overflow channel;

[0045] 70. Sealing part. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0047] like Figure 1 、 Figure 2 and Figure 6 As shown, the embodiment of the present invention provides an alumina dissolution device, which includes a main body 10, a stirring part 20, a heating part 30, a pressure detection part 40 and a pressure relief part 50. The main body 10 extends in the horizontal direction. The main body 10 has a plurality of reaction chambers 101. The plurality of reaction chambers 101 are spaced apart along the length direction of the main body 10. Two adjacent reaction chambers 101 are connected to each other. The reaction chamber 101 includes a head end reaction chamber 1011 and a tail end reaction chamber 1012. The main body 10 has a material inlet 1001, a material outlet 1002, an exhaust port 1003 and a safety valve port 1004. The material inlet 1001 is connected to the head end reaction chamber 1011, and the material outlet 1002 is connected to the exhaust port 1003. It is connected to the tail end reaction chamber 1012, the exhaust port 1003 is connected to at least one reaction chamber 101, and the safety valve port 1004 is connected to at least one reaction chamber 101; there are multiple stirring parts 20, and each reaction chamber 101 is correspondingly provided with a stirring part 20, and the stirring part 20 is used to stir the material in the corresponding reaction chamber 101; there are multiple heating parts 30, and each reaction chamber 101 is correspondingly provided with a heating part 30, and the heating part 30 is used to heat the material in the corresponding reaction chamber 101; the pressure detection part 40 is provided on the main body 10, and the pressure detection part 40 is used to detect the pressure of the internal space of the main body 10; the pressure relief part 50 is provided at the safety valve port 1004.

[0048] The technical solution of the present invention employs a plurality of horizontally distributed and sequentially interconnected reaction chambers 101 within the main body 10 of the alumina dissolution apparatus. This allows for continuous alumina dissolution using a single device, reducing the number of equipment units and associated piping, valves, and instrumentation, thereby lowering production costs. Furthermore, each reaction chamber 101 is equipped with an independent stirring section 20 and heating section 30, enhancing the uniformity of material mixing and the controllability of the reaction temperature, thereby improving the mass and heat transfer efficiency during the alumina dissolution process.

[0049] In this embodiment, exhaust port 1003 is used to exhaust gases generated during the reaction process. This timely exhaust reduces the internal pressure of reaction chamber 101, maintaining it within a suitable range and facilitating the smooth progress of the reaction. A pressure detection unit 40 provided on body 10 monitors pressure changes within reaction chamber 101 in real time. When pressure becomes abnormal, pressure relief unit 50 provides relief, reducing the pressure within reaction chamber 101 and ensuring it remains within a safe range, thereby enhancing the safety of the alumina dissolution apparatus.

[0050] Among them, the pressure relief part 50 can be set as a safety pressure relief valve, which is electrically connected to the pressure detection part 40. When the pressure value detected by the pressure detection part 40 exceeds the preset value, the safety pressure relief valve automatically releases pressure; when the pressure value detected by the pressure detection part 40 meets the working standard, the safety pressure relief valve is closed.

[0051] In the embodiment of this solution, the main body 10 further has a stirring port 1006 and a temperature measuring port 1007. The stirring unit 20 is inserted into the reaction chamber 101 through the stirring port 1006. The temperature measuring port 1007 is provided with a temperature measuring device that can monitor the temperature of the material inside the reaction chamber 101 in real time and adjust the operating state of the heating unit 30 based on the monitored temperature to maintain the temperature inside the reaction chamber 101 within a suitable reaction temperature range.

[0052] like Figure 7 As shown, in the embodiment of this scheme, the stirring part 20 includes a stirring shaft 201, a stirring blade 202 and a stirring motor 203. The stirring motor 203 drives the stirring shaft 201 to rotate, and the stirring shaft 201 drives the stirring blade 202 to rotate to achieve stirring of the reactants.

[0053] Furthermore, the surfaces of the stirring shaft 201 and the stirring blades 202 are sprayed with PFA material, so that the stirring shaft 201 and the stirring blades 202 have corrosion resistance and prevent the stirring shaft 201 and the stirring blades 202 from being corroded by corrosive reactants.

[0054] This solution does not limit the specific number of reaction chambers 101 , and the number of reaction chambers 101 can be set to be greater than or equal to three.

[0055] In some embodiments of the present solution, two reaction chambers 101 are provided, specifically including a head end reaction chamber 1011 and a tail end reaction chamber 1012 .

[0056] like Figure 4As shown, the main body 10 further includes an outer shell 102 and an inner liner 103. The outer shell 102 is made of stainless steel; the inner liner 103 is disposed within the outer shell 102 and has multiple reaction chambers 101. The stainless steel outer shell 102 can effectively withstand high temperature and high pressure environments, allowing the outer shell 102 to protect the inner liner 103 and enhance the structural strength of the alumina dissolution device. The design of multiple reaction chambers 101 within the inner liner 103 allows the material to undergo multiple reactions continuously within the main body 10, enhancing the uniformity and controllability of the reactions.

[0057] Specifically, the lining 103 includes a thermal insulation layer 1031 and a first acid-resistant and heat-resistant brick layer 1032. The profile of the thermal insulation layer 1031 matches the profile of the inner side of the outer shell 102, and the thermal insulation layer 1031 is disposed inside the outer shell 102. The profile of the first acid-resistant and heat-resistant brick layer 1032 matches the profile of the thermal insulation layer 1031, and the first acid-resistant and heat-resistant brick layer 1032 is disposed inside the thermal insulation layer 1031. This configuration facilitates heat preservation in the alumina dissolution device, improves the corrosion resistance of the alumina dissolution device, and improves the dissolution efficiency of alumina.

[0058] In the embodiment of this scheme, the alumina dissolution reaction needs to be carried out under high temperature conditions above 150°C. Without effective thermal insulation measures, a large amount of heat energy will be dissipated into the environment through the outer shell, resulting in energy waste and affecting reaction efficiency. The thermal insulation layer 1031 can effectively block the heat inside the alumina dissolution device, maintain the stability of the internal temperature environment of the alumina dissolution device, reduce the loss of heat energy to the outside, and ensure the efficiency of the alumina dissolution reaction. The first acid-resistant and heat-resistant brick layer 1032 has good acid resistance and high temperature resistance. It can protect the thermal insulation layer 1031 and the outer shell 102 from corrosion under high temperature and acidic conditions, ensuring the smooth operation of the alumina dissolution device and extending the service life of the equipment.

[0059] In an embodiment of the present scheme, the thermal insulation layer 1031 includes a rubber layer 10311 and a thermal insulation putty 10312 arranged in sequence from the outside to the inside. The thermal insulation putty 10312 is connected to the outer shell 102 through the rubber layer 10311. The rubber layer 10311 and the thermal insulation putty 10312 both have good thermal insulation properties. Their combined use can significantly reduce the loss of heat from the inside of the alumina dissolution device to the outside, thereby maintaining the stability of the internal temperature of the alumina dissolution device.

[0060] In this embodiment, the first acid-resistant and heat-resistant brick layer 1032 is provided with multiple layers from the outside to the inside, with two adjacent layers of the first acid-resistant and heat-resistant brick layer 1032 connected by a first mud glue layer 1033. The multiple layers of first acid-resistant and heat-resistant brick layer 1032 improve the overall structural strength and stability of the alumina dissolution device, further enhancing the corrosion resistance and high-temperature resistance of the alumina dissolution device. The first mud glue layer 1033 not only serves as a connection but also acts as a heat conduction medium, reducing uneven heat conduction caused by gaps between brick layers, improving thermal energy utilization efficiency, and providing a more stable and durable reaction environment suitable for the alumina dissolution reaction.

[0061] Furthermore, the thermal insulation layer 1031 is connected to the first acid-resistant and heat-resistant brick layer 1032 via a second adhesive layer 1034. Specifically, the thermal insulation mortar 10312 is connected to the first acid-resistant and heat-resistant brick layer 1032 via the second adhesive layer 1034. This arrangement ensures a tight fit within the internal structure of the alumina dissolution device, enhancing its structural stability. The second adhesive layer 1034 also serves as a heat transfer medium. Simultaneously, as a sealing material, it effectively isolates the thermal insulation layer 1031 from corrosive media, maintaining the device's corrosion resistance.

[0062] like Figure 3 As shown, further, the alumina dissolution device also includes a baffle portion 60, and a plurality of baffle portions 60 are provided. The plurality of baffle portions 60 are arranged in the main body 10 at intervals along the length direction of the main body 10 to divide the space in the main body 10 into a plurality of reaction chambers 101. An overflow channel 601 is formed between the top of the baffle portion 60 and the main body 10, and two adjacent reaction chambers 101 are connected through the corresponding overflow channel 601.

[0063] Specifically, the design of multiple reaction chambers 101 and multiple overflow channels 601 allows material to flow smoothly from one reaction chamber 101 to the next within the main body 10 through the overflow channels 601 for the next reaction, ensuring the continuity of the alumina dissolution reaction. Furthermore, each reaction chamber 101 can independently control reaction conditions, allowing for segmented control of process parameters such as heating and stirring. This allows precise adjustment of reaction conditions within each reaction chamber 101, enhancing the controllability of the entire alumina dissolution process and ensuring uniform and efficient dissolution of the alumina.

[0064] Furthermore, the barrier 60 includes a second acid-resistant and heat-resistant brick layer. This arrangement ensures that the barrier 60 can separate the reaction chambers 101 while reducing the possibility of being corroded by the reaction substances with corrosive and high-temperature characteristics, thereby ensuring the structural stability of the alumina dissolution device.

[0065] In some embodiments of the present scheme, along the distribution direction of multiple reaction chambers 101, each barrier portion 60 includes multiple layers of second acid-resistant and heat-resistant brick layers, and two adjacent layers of second acid-resistant and heat-resistant brick layers are connected by a third mud glue layer. The above arrangement further improves the corrosion resistance and temperature resistance of the barrier portion 60.

[0066] like Figure 5 As shown, further, the heating part 30 includes a sleeve 301, a heating rod 302 and a connecting wire 303, the sleeve 301 has a threading hole 3011 and a accommodating chamber 3012 that are interconnected, the accommodating chamber 3012 is filled with a heat-conducting medium 3013, one end of the sleeve 301 is inserted into the reaction chamber 101, and the end of the sleeve 301 with the threading hole 3011 is located on the outside of the main body 10; the heating rod 302 is arranged in the accommodating chamber 3012; one end of the connecting wire 303 extends into the accommodating chamber 3012 through the threading hole 3011 and is connected to the heating rod 302, and the connecting wire 303 is sealed and connected to the sleeve 301.

[0067] In an embodiment of this scheme, the heating rod 302 is connected to an external power source via a connecting line 303, and the heat-conducting medium 3013 enables the heat generated by the heating rod 302 to be heat-exchanged with the material inside the reaction chamber 101, thereby ensuring the temperature conditions required for the reaction of the materials in each reaction chamber 101.

[0068] Furthermore, the sleeve 301 includes a first sleeve 3014 and a second sleeve 3015, which are arranged one inside the other from the inside out. The first sleeve 3014 is made of stainless steel, and the second sleeve 3015 is made of a tantalum-tungsten alloy. Stainless steel has excellent mechanical strength and thermal conductivity. The first sleeve 3014 made of stainless steel provides stable structural support and a thermally conductive environment for the heating unit 30. Tantalum-tungsten alloy has excellent high-temperature and corrosion resistance, which enables the second sleeve 3015 to directly contact the corrosive reactants in the reaction chamber 101, effectively preventing the corrosive medium from corroding the heating unit 30. This arrangement of inner and outer sleeves not only ensures the efficient operation of the heating unit 30 under high-temperature and high-acidity conditions, but also improves structural stability and corrosion resistance.

[0069] like Figure 2 and Figure 5 As shown, further, a mounting port 1005 is provided on the main body 10, the mounting port 1005 is communicated with the reaction chamber 101, the sleeve 301 is passed through the mounting port 1005 into the reaction chamber 101, and the alumina dissolution device also includes a sealing portion 70, which is provided between the mounting port 1005 and the sleeve 301 to seal the gap between the sleeve 301 and the mounting port 1005.

[0070] In the embodiment of the present scheme, the sealing portion 70 can effectively isolate the corrosive materials inside the reaction chamber 101 from the external environment, especially preventing the leakage of high-temperature, high-acidity materials through the gap between the installation port 1005 and the sleeve 301, protecting the electrical components of the heating portion 30 from corrosion, and at the same time reducing heat loss, ensuring that the heat generated by the heating portion 30 can be efficiently transferred to the interior of the reaction chamber 101, maintaining the high temperature conditions required for the dissolution of alumina, and improving the reaction efficiency.

[0071] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0072] Unless otherwise specified, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0073] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0074] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0075] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0076] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An alumina dissolution device, characterized in that: include: The main body (10) extends in a horizontal direction, and the main body (10) has a plurality of reaction chambers (101), the plurality of reaction chambers (101) are spaced apart along the length direction of the main body (10), and two adjacent reaction chambers (101) are connected to each other, and the reaction chamber (101) includes a head end reaction chamber (1011) and a tail end reaction chamber (1012); the main body (10) has a material inlet (1001), a material outlet (1002), an exhaust port (1003) and a safety valve port (1004), the material inlet (1001) is connected to the head end reaction chamber (1011), the material outlet (1002) is connected to the tail end reaction chamber (1012), the exhaust port (1003) is connected to at least one of the reaction chambers (101), and the safety valve port (1004) is connected to at least one of the reaction chambers (101); A plurality of stirring parts (20) are provided, and one stirring part (20) is correspondingly provided in each reaction chamber (101), and the stirring part (20) is used to stir the material in the corresponding reaction chamber (101); A plurality of heating parts (30) are provided, and one heating part (30) is correspondingly provided in each reaction chamber (101), and the heating part (30) is used to heat the material in the corresponding reaction chamber (101); a pressure detection portion (40) disposed on the main body (10), the pressure detection portion (40) being used to detect the pressure of the internal space of the main body (10); The pressure relief portion (50) is arranged at the safety valve port (1004).

2. The alumina dissolution device according to claim 1, characterized in that: The main body (10) comprises: The housing (102) is made of stainless steel; An inner liner (103) is arranged in the outer shell (102), and the inner liner (103) has a plurality of reaction chambers (101).

3. The alumina dissolution device according to claim 2, characterized in that: The lining (103) comprises: a heat-insulating layer (1031), wherein the profile of the heat-insulating layer (1031) matches the profile of the inner side of the outer shell (102), and the heat-insulating layer (1031) is arranged on the inner side of the outer shell (102); A first acid-resistant and heat-resistant brick layer (1032), the contour of the first acid-resistant and heat-resistant brick layer (1032) is adapted to the contour of the heat-insulating layer (1031), and the first acid-resistant and heat-resistant brick layer (1032) is arranged on the inner side of the heat-insulating layer (1031).

4. The alumina dissolution device according to claim 3, characterized in that: The first acid-resistant and heat-resistant brick layer (1032) is provided with multiple layers from the outside to the inside, and two adjacent first acid-resistant and heat-resistant brick layers (1032) are connected by a first mud glue layer (1033).

5. The alumina dissolution device according to claim 3, characterized in that: The heat-insulating layer (1031) is connected to the first acid-resistant and heat-resistant brick layer (1032) via a second mud glue layer (1034).

6. The alumina dissolution device according to claim 1, characterized in that: The alumina dissolution device also includes: A plurality of baffles (60) are provided, and the plurality of baffles (60) are arranged in the main body (10) at intervals along the length direction of the main body (10) to divide the space in the main body (10) into a plurality of reaction chambers (101). An overflow channel (601) is formed between the top of the baffle (60) and the main body (10), and two adjacent reaction chambers (101) are connected through the corresponding overflow channel (601).

7. The alumina dissolution device according to claim 6, characterized in that: The barrier portion (60) includes a second acid-resistant and heat-resistant brick layer.

8. The alumina dissolution device according to claim 1, characterized in that: The heating unit (30) includes: A sleeve (301), the sleeve (301) having a threading hole (3011) and a receiving cavity (3012) that are interconnected, the receiving cavity (3012) being filled with a heat-conducting medium (3013), one end of the sleeve (301) being passed through the reaction cavity (101), and the end of the sleeve (301) having the threading hole (3011) being located outside the main body (10); A heating rod (302) is disposed in the accommodating cavity (3012); A connecting wire (303), one end of which extends into the accommodating cavity (3012) through the threading hole (3011) and is connected to the heating rod (302), and the connecting wire (303) is sealed and connected to the sleeve (301).

9. The alumina dissolution device according to claim 8, characterized in that: The sleeve (301) comprises a first sleeve (3014) and a second sleeve (3015) which are sleeved on each other from the inside to the outside, the first sleeve (3014) is made of stainless steel, and the second sleeve (3015) is made of tantalum-tungsten alloy.

10. The alumina dissolution device according to claim 8, characterized in that: The main body (10) is provided with a mounting port (1005), the mounting port (1005) is communicated with the reaction chamber (101), the sleeve (301) is passed through the mounting port (1005) and is installed in the reaction chamber (101), and the alumina dissolution device further comprises: The sealing portion (70) is provided between the installation opening (1005) and the sleeve (301) to seal the gap between the sleeve (301) and the installation opening (1005).

Images