A light magnesium oxide modification system
By combining crushing, modification, and calcination, the problems of high cost and complex process in modifying light magnesium oxide were solved. This achieved efficient modification with low cost and simple process, which increased the specific surface area and bulk density of magnesium oxide and changed its microstructure and pH value.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 青海濮耐高新材料有限公司
- Filing Date
- 2025-07-11
- Publication Date
- 2026-06-02
AI Technical Summary
Existing methods for modifying lightweight magnesium oxide suffer from high costs, complex processes, environmental pollution, and high requirements for precise control, making it difficult to achieve low-cost, simple processes to modify it into lightweight magnesium oxide with large specific surface area, low bulk density, and modifiable microstructure.
The system employs a combination of crushing mechanism, modification reaction mechanism, steam generation mechanism, and calcination mechanism. Through crushing, modification reaction, and calcination processes, steam generated by the steam generator reacts with magnesium oxide in the reaction vessel. Combined with the design of rotary joints and hollow discs, uniform contact and modification are achieved. Finally, the modification is completed in the calcination furnace.
The method achieves low-cost and simple process modification of lightweight magnesium oxide, which significantly increases the specific surface area and bulk density of the modified magnesium oxide, changes its microstructure and pH value, and eliminates the need for drying process, thus reducing energy consumption. The equipment is also easy to maintain and operate.
Smart Images
Figure CN224308386U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of lightweight magnesium oxide modification technology. Specifically, it relates to a lightweight magnesium oxide modification system. Background Technology
[0002] Currently, there are five main categories of modification methods for lightweight magnesium oxide: surface modification, doping modification, composite modification, liquid-phase precipitation modification, and polymer film coating modification. Among these, surface modification includes coupling agent methods, surfactant methods, esterification reactions, and high-energy surface modification. Surface modification technology for lightweight magnesium oxide has significant advantages in improving its application performance, but in practical applications, factors such as high cost, environmental pollution, and high process complexity need to be comprehensively considered. Doping modification can optimize and improve performance without changing the original crystal structure of lightweight magnesium oxide, offering good flexibility. However, the doping process requires precise control of the type and content of dopant elements; otherwise, it may lead to excessive lattice defects, which in turn affects the performance of lightweight magnesium oxide. Composite modification, liquid-phase precipitation modification, and polymer film coating modification, while each having their own advantages, all share common drawbacks, including high requirements for control precision, complex processes, and high costs.
[0003] Therefore, there is a need to develop a lightweight magnesium oxide modification system that is low in cost, simple in process technology, and capable of modifying ordinary magnesium oxide with poor activity into lightweight magnesium oxide with large specific surface area and low bulk density, while also changing its microstructure and pH value. Utility Model Content
[0004] Therefore, the technical problem to be solved by this utility model is to provide a lightweight magnesium oxide modification system that can achieve low cost and simple process technology, and the modified lightweight magnesium oxide has a large specific surface area, low bulk density, and can change microstructure and pH.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0006] A lightweight magnesium oxide modification system includes a crushing mechanism, a modification reaction mechanism, a steam generating mechanism, and a calcination mechanism; the material output end of the crushing mechanism is connected to the material input end of the modification reaction mechanism, and the material output end of the modification reaction mechanism is connected to the material input end of the calcination mechanism; the steam output end of the steam generating mechanism is fluidly connected to the steam input end of the modification reaction mechanism.
[0007] The aforementioned lightweight magnesium oxide modification system includes a crushing mechanism comprising a crusher, a buffer silo A, a metering silo, a tubular screw conveyor, and a bucket elevator A. The material output end of the crusher is connected to the material input end of the buffer silo A, the material output end of the buffer silo A is connected to the material input end of the metering silo, the material output end of the metering silo is connected to the material input end of the tubular screw conveyor, the material output end of the tubular screw conveyor is connected to the material input end of the bucket elevator A, and the material output end of the bucket elevator A is connected to the material input end of the modification reaction mechanism.
[0008] The aforementioned light magnesium oxide modification system includes a modification reaction mechanism comprising a buffer silo B, a reactor connecting pipe, a reactor, a bucket elevator B, a buffer silo C, and a conveying tank connecting pipe. The material input end of the buffer silo B is connected to the material output end of the crushing mechanism; the material output end of the buffer silo B is connected to the material input end of the reactor connecting pipe; the material output end of the reactor connecting pipe is connected to the material input end of the reactor; the material output end of the reactor is connected to the material input end of the bucket elevator B; the material output end of the bucket elevator B is connected to the material input end of the buffer silo C; the material output end of the buffer silo C is connected to the material input end of the conveying tank connecting pipe; and the material output end of the conveying tank connecting pipe is connected to the material input end of the calcining mechanism.
[0009] The aforementioned lightweight magnesium oxide modification system includes a reactor comprising a hardened gear reducer, a rotary joint, a hollow shaft, a tank body, and several hollow discs. Bearings are installed at both ends of the hollow shaft. The rotary joint is connected to the bearing installed at the first end of the hollow shaft via a flange. The second end of the hollow shaft passes through the first end wall of the tank body into the internal space of the tank body and extends out of the tank body through the second end wall. A mechanical seal is installed between the hollow shaft and the first end tank wall, and also between the hollow shaft and the second end tank wall. The hollow shaft is connected to the power output end of the hardened gear reducer via a coupling through the bearing located at the second end of the hollow shaft.
[0010] The hollow disc is mounted on the hollow shaft located inside the tank body. The surface of the hollow disc is perpendicular to the hollow shaft, and the hollow shaft passes through the center of the circle containing the hollow disc. The internal space of the hollow disc is in fluid communication with the internal space of the hollow shaft. A pair of spiral lifting plates are symmetrically mounted on each hollow disc.
[0011] In the aforementioned lightweight magnesium oxide modification system, there are eight hollow discs, which are evenly distributed on the hollow shaft located inside the tank body.
[0012] In the aforementioned light magnesium oxide modification system, the rotary joint is provided with one steam inlet and one steam outlet; the tank body has a feed inlet and a discharge outlet on its central vertical line, the feed inlet is connected to the material output end of the pipeline connecting the reactor, and the discharge outlet is connected to the material input end of the bucket elevator B; the tank body has four steam inlets and two steam outlets, two steam inlets are located at the upper end of the tank body, and the other two steam inlets and two steam outlets are evenly distributed at the lower end of the tank body.
[0013] In the aforementioned lightweight magnesium oxide modification system, a temperature controller is installed at the lower end of the second end of the tank, with the temperature probe of the temperature controller facing the internal space of the tank; a safety valve is installed at the upper end of the first end of the tank; and a manhole is provided at 1 / 4 and 3 / 4 of the upper end of the tank from the first end to the second end.
[0014] The aforementioned lightweight magnesium oxide modification system includes a calcination mechanism comprising a pneumatic conveying tank, a conveyor belt, and a calcination furnace; the material input end of the pneumatic conveying tank is connected to the material output end of the modification reaction mechanism, the material output end of the pneumatic conveying tank is connected to the material input end of the conveyor belt, and the material output end of the conveyor belt is connected to the material input end of the calcination furnace.
[0015] The aforementioned light magnesium oxide modification system includes a steam generating mechanism comprising a water source tank, connecting water pipes, a steam generator, and a steam pipeline. The fluid outlet of the water source tank is fluidly connected to the fluid inlet of the connecting water pipe, the fluid outlet of the connecting water pipe is fluidly connected to the fluid inlet of the steam generator, the fluid outlet of the steam generator is fluidly connected to the fluid inlet of the steam pipeline, and the fluid outlet of the steam pipeline is fluidly connected to the steam input of the modification reaction mechanism. The descaling agent in the steam generator is citric acid, acetic acid, sodium bicarbonate, etc.
[0016] The aforementioned lightweight magnesium oxide modification system includes a crushing mechanism comprising a crusher, a buffer silo A, a metering silo, a tubular screw conveyor, and a bucket elevator A. The material output end of the crusher is connected to the material input end of the buffer silo A, the material output end of the buffer silo A is connected to the material input end of the metering silo, the material output end of the metering silo is connected to the material input end of the tubular screw conveyor, and the material output end of the tubular screw conveyor is connected to the material input end of the bucket elevator A.
[0017] The modified reaction mechanism includes a buffer silo B, a reactor connecting pipe, a reactor, a bucket elevator B, a buffer silo C, and a conveying tank connecting pipe. The material input end of the buffer silo B is connected to the material output end of the bucket elevator A, the material output end of the buffer silo B is connected to the material input end of the reactor connecting pipe, the material output end of the reactor connecting pipe is connected to the material input end of the reactor, the material output end of the reactor is connected to the material input end of the bucket elevator B, the material output end of the bucket elevator B is connected to the material input end of the buffer silo C, and the material output end of the buffer silo C is connected to the material input end of the conveying tank connecting pipe.
[0018] The calcination mechanism includes a pneumatic conveying tank, a conveyor belt, and a calcination furnace; the material input end of the pneumatic conveying tank is connected to the material output end of the pipe connecting the conveying tank, the material output end of the pneumatic conveying tank is connected to the material input end of the conveyor belt, and the material output end of the conveyor belt is connected to the material input end of the calcination furnace.
[0019] The steam generating mechanism includes a water source tank, a connecting water pipe, a steam generator, and a steam pipeline; the fluid outlet end of the water source tank is fluidly connected to the fluid inlet end of the connecting water pipe, the fluid outlet end of the connecting water pipe is fluidly connected to the fluid inlet end of the steam generator, the fluid outlet end of the steam generator is fluidly connected to the fluid inlet end of the steam pipeline, and the fluid outlet end of the steam pipeline is fluidly connected to the steam input end of the reactor.
[0020] The technical solution of this utility model has achieved the following beneficial technical effects:
[0021] 1. This utility model's lightweight magnesium oxide modification system is convenient to operate, safe, efficient, and simple in process. No other impurities are introduced during the entire reaction. After modification, no drying process is required; it can be directly calcined near the furnace, significantly reducing energy consumption. Compared with existing lightweight magnesium oxide modification devices or systems, this utility model's modification system has lower costs, is easier to control, has a simpler site layout, is highly efficient and energy-saving, and the production process is smooth. If the lightweight magnesium oxide modification system malfunctions, it is easy to repair and replace.
[0022] 2. This utility model provides a reaction vessel that increases modification efficiency. The hollow shaft rotates, driving spiral lifters at both ends of a hollow disc to lift magnesium oxide powder from the bottom, ensuring full contact with water vapor. Adjusting the forward and reverse rotation of the hollow shaft allows for material spreading and aggregation, resulting in more uniform material distribution. Multiple steam inlets at the top and bottom of the reaction vessel ensure more uniform internal water vapor distribution, effectively reducing modification time. Multiple steam outlets at the bottom of the reaction vessel facilitate rapid pressure release, making discharge safer. The reaction vessel features pressure and temperature maintenance functions while maintaining a high degree of automation. Attached Figure Description
[0023] Figure 1 A schematic diagram of the structure of the lightweight magnesium oxide modification system in this embodiment of the present invention;
[0024] Figure 2 Side sectional view of the reactor structure of the lightweight magnesium oxide modification system in this embodiment of the present invention;
[0025] Figure 3 A front sectional view of the reactor structure of the lightweight magnesium oxide modification system in this embodiment of the present invention.
[0026] The reference numerals in the diagram are as follows: 1-Crusher; 2-Buffer silo A; 3-Metering silo; 4-Tube screw conveyor; 5-Bucket elevator A; 6-Buffer silo B; 7-Reaction vessel connecting pipe; 8-Water source tank; 9-Connecting water pipe; 10-Steam generator; 11-Steam pipe; 12-Reaction vessel; 13-Bucket elevator B; 14-Buffer silo C; 15-Transport tank connecting pipe; 16-Pneumatic conveying tank; 17-Conveyor belt; 18-Calcination furnace;
[0027] 121-Hardened gear reducer; 122-Bearing; 123-Mechanical seal; 124-Temperature controller; 125-Inlet; 126-Outlet; 127-Safety valve; 128-Rotary joint; 129-Steam inlet; 130-Steam outlet; 131-Hollow shaft; 132-Spiral lifter; 133-Manhole; 134-Tank body; 135-Hollow disc; 136-Staircase; 137-Protective cover; 138-Safety railing. Detailed Implementation
[0028] like Figure 1 As shown, the lightweight magnesium oxide modification system in this embodiment includes a crushing mechanism, a modification reaction mechanism, a steam generation mechanism, and a calcination mechanism;
[0029] The crushing mechanism includes a crusher 1, a buffer silo A2, a metering silo 3, a tubular screw conveyor 4, and a bucket elevator A5; the material output end of the crusher 1 is connected to the material input end of the buffer silo A2, the material output end of the buffer silo A2 is connected to the material input end of the metering silo 3, the material output end of the metering silo 3 is connected to the material input end of the tubular screw conveyor 4, and the material output end of the tubular screw conveyor 4 is connected to the material input end of the bucket elevator A5.
[0030] The modified reaction mechanism includes a buffer silo B6, a reactor connecting pipe 7, a reactor 12, a bucket elevator B13, a buffer silo C14, and a conveying tank connecting pipe 15. The material input end of the buffer silo B6 is connected to the material output end of the bucket elevator A5, the material output end of the buffer silo B6 is connected to the material input end of the reactor connecting pipe 7, the material output end of the reactor connecting pipe 7 is connected to the material input end of the reactor 12, the material output end of the reactor 12 is connected to the material input end of the bucket elevator B13, the material output end of the bucket elevator B13 is connected to the material input end of the buffer silo C14, and the material output end of the buffer silo C14 is connected to the material input end of the conveying tank connecting pipe 15.
[0031] The calcination mechanism includes a pneumatic conveying tank 16, a conveyor belt 17, and a calcination furnace 18; the material input end of the pneumatic conveying tank 16 is connected to the material output end of the conveying tank connecting pipe 15, the material output end of the pneumatic conveying tank 16 is connected to the material input end of the conveyor belt 17, and the material output end of the conveyor belt 17 is connected to the material input end of the calcination furnace 18.
[0032] The steam generating mechanism includes a water source tank 8, a connecting water pipe 9, a steam generator 10, and a steam pipeline 11; the fluid outlet end of the water source tank 8 is fluidly connected to the fluid inlet end of the connecting water pipe 9, the fluid outlet end of the connecting water pipe 9 is fluidly connected to the fluid inlet end of the steam generator 10, the fluid outlet end of the steam generator 10 is fluidly connected to the fluid inlet end of the steam pipeline 11, and the fluid outlet end of the steam pipeline 11 is fluidly connected to the steam input end of the reaction vessel 12.
[0033] like Figure 2 and Figure 3 As shown, the reactor 12 includes a hardened gear reducer 121, a rotary joint 128, a hollow shaft 131, a tank body 134, and a hollow disc 135. Bearings 122 are installed at both ends of the hollow shaft 131. The rotary joint 128 is connected to the bearing 122 installed at the first end of the hollow shaft 131 via a flange. The second end of the hollow shaft 131 passes through the first end wall of the tank body 134, enters the internal space of the tank body 134, and exits through the second end wall of the tank body 134. A mechanical seal 123 is installed between the hollow shaft 131 and the first end wall, and also between the hollow shaft 131 and the second end wall. The hollow shaft 131 is connected to the power output end of the hardened gear reducer 121 via a coupling through the bearing 122 located at the second end of the hollow shaft 131.
[0034] The hollow discs 135 are mounted on the hollow shaft 131 located inside the tank 134. The surface of the hollow discs 135 is perpendicular to the hollow shaft 131, and the hollow shaft 131 passes through the center of the circle containing the hollow discs 135. The internal space of the hollow discs 135 is in fluid communication with the internal space of the hollow shaft 131. Each hollow disc 135 is symmetrically equipped with a pair of spiral lifting plates 132. There are eight hollow discs 135, which are evenly distributed on the hollow shaft 131 inside the tank 134. The hollow shaft 131 and the hollow discs 135 contain heating oil, which provides the temperature required for the magnesium oxide modification reaction inside the tank 134.
[0035] The rotary joint 128 is provided with one steam inlet 129 and one steam outlet 130; the tank body 134 has a feed inlet 125 and a discharge outlet 126 on its central vertical line. The feed inlet 125 is connected to the material output end of the reactor connecting pipe 7, and the discharge outlet 126 is connected to the material input end of the bucket elevator B13; the tank body 134 has four steam inlets 129 and two steam outlets 130. Two steam inlets 129 are located at the upper end of the tank body 134, and the other two steam inlets 129 and two steam outlets 130 are evenly distributed at the lower end of the tank body 134.
[0036] A temperature measuring and control instrument 124 is installed at the lower end of the second end of the tank body 134, and the temperature measuring probe of the temperature measuring and control instrument 124 faces the internal space of the tank body 134; a safety valve 127 is installed at the upper end of the first end of the tank body 134; a manhole 133 is provided at 1 / 4 and 3 / 4 of the upper end of the tank body 134 from the first end to the second end.
[0037] In this embodiment, the tubular screw conveyor 4 is a GLS325*3000 model, and both bucket elevators A and B are TH300*11.5 meters long. Control valves are installed at both ends of the connecting water pipe 9 and steam pipe 11. Citric acid is added as the descaling agent to the steam generator 10. The steam generator 10 is a 2-2.5m... 3 Steam volume; the volume of reactor 12 is 22.8 m³. 3 Buffer silos A, B, and C are all 5m... 3 Model number Ø1800*2000*1500.
[0038] The working principle of the lightweight magnesium oxide modification system in this embodiment is as follows:
[0039] After being crushed in crusher 1, magnesium oxide is first conveyed to buffer silo A2, and then to metering silo 3 for weighing [crushed particle size D]. 90The crushed particle size is 40-325 mesh (150 mesh in this example). The weighed magnesium oxide is then transported by tubular screw conveyor 4 and bucket elevator A5 to buffer silo B6 for later use. Water from water tank 8 is supplied to steam generator 10 via connecting pipe 9. A descaling agent (usually citric acid, acetic acid, or sodium bicarbonate; citric acid is used in this example) needs to be added to steam generator 10. The generated steam enters reactor 12 through steam pipe 11. The material in buffer silo B6 enters reactor 12 through reactor connecting pipe 7. After modification in reactor 12 (modification time is 30 min-5 h, internal steam pressure is 0.05-0.2 MPa, reactor heating temperature is 100-160 °C; modification time in this example is 100 min, steam pressure is 0.13 MPa), the modified material undergoes modification. [MPa, reactor heating temperature 160℃], the material enters the bucket elevator B13 through the chute pipe, and is then transported to the buffer silo C14 for later use; the material in the buffer silo C14 enters the pneumatic conveying tank 16 through the conveyor tank connecting pipe 15, and is then conveyed to the calcining furnace 18 by the conveyor belt 17. After calcination, the relevant data are tested and found to meet the enterprise standards, which indicates that it is the finished product [calcining furnace temperature is 500~900℃, and the calcining furnace temperature in this example is 750℃].
[0040] After modification, five randomly selected samples of magnesium oxide were analyzed for bulk density, specific surface area, particle size, microstructure, CAA value, and pH value. Significant changes were observed in all samples, as shown in Table 1.
[0041] Table 1 Comparison of various properties of magnesium oxide before and after modification
[0042]
[0043] As can be seen from the data table, there are significant differences in pH value, bulk density, specific surface area and microstructure before and after magnesium oxide modification, indicating a significant modification effect.
[0044] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of the claims of this patent application.
Claims
1. A lightweight magnesium oxide modification system, characterized in that, It includes a crushing mechanism, a modification reaction mechanism, a steam generating mechanism, and a calcining mechanism; the material output end of the crushing mechanism is connected to the material input end of the modification reaction mechanism, and the material output end of the modification reaction mechanism is connected to the material input end of the calcining mechanism; the steam output end of the steam generating mechanism is fluidly connected to the steam input end of the modification reaction mechanism.
2. The lightweight magnesium oxide modification system according to claim 1, characterized in that, The crushing mechanism includes a crusher (1), a buffer silo A (2), a metering silo (3), a tubular screw conveyor (4), and a bucket elevator A (5); the material output end of the crusher (1) is connected to the material input end of the buffer silo A (2), the material output end of the buffer silo A (2) is connected to the material input end of the metering silo (3), the material output end of the metering silo (3) is connected to the material input end of the tubular screw conveyor (4), the material output end of the tubular screw conveyor (4) is connected to the material input end of the bucket elevator A (5), and the material output end of the bucket elevator A (5) is connected to the material input end of the modified reaction mechanism.
3. The lightweight magnesium oxide modification system according to claim 1, characterized in that, The modified reaction mechanism includes a buffer silo B (6), a reactor connecting pipe (7), a reactor (12), a bucket elevator B (13), a buffer silo C (14), and a conveying tank connecting pipe (15). The material input end of the buffer silo B (6) is connected to the material output end of the crushing mechanism. The material output end of the buffer silo B (6) is connected to the material input end of the reactor connecting pipe (7). The material output end of the reactor connecting pipe (7) is connected to the material input end of the reactor (12). The material output end of the reactor (12) is connected to the material input end of the bucket elevator B (13). The material output end of the bucket elevator B (13) is connected to the material input end of the buffer silo C (14). The material output end of the buffer silo C (14) is connected to the material input end of the conveying tank connecting pipe (15). The material output end of the conveying tank connecting pipe (15) is connected to the material input end of the calcining mechanism.
4. The lightweight magnesium oxide modification system according to claim 3, characterized in that, The reactor (12) includes a hardened gear reducer (121), a rotary joint (128), a hollow shaft (131), a tank body (134), and a hollow disc (135); bearings (122) are installed at both ends of the hollow shaft (131); the rotary joint (128) is connected to the bearing (122) installed at the first end of the hollow shaft (131) via a flange; the second end of the hollow shaft (131) passes through the first end of the tank body (134) and enters the tank body (135). 4) The internal space extends out of the tank body (134) through the second end tank wall; a mechanical seal (123) is installed between the hollow shaft (131) and the first end tank wall, and a mechanical seal (123) is also installed between the hollow shaft (131) and the second end tank wall; the hollow shaft (131) is connected to the power output end of the hardened gear reducer (121) via a coupling through the bearing (122) located at the second end of the hollow shaft (131); The hollow disc (135) is installed on the hollow shaft (131) located inside the tank (134). The surface of the hollow disc (135) is perpendicular to the hollow shaft (131), and the hollow shaft (131) passes through the center of the circle containing the hollow disc (135). The internal space of the hollow disc (135) is in fluid communication with the internal space of the hollow shaft (131). A pair of spiral lifting plates (132) are symmetrically installed on each hollow disc (135).
5. The lightweight magnesium oxide modification system according to claim 4, characterized in that, The number of hollow discs (135) is 8, and the 8 hollow discs (135) are evenly distributed on the hollow shaft (131) located inside the can (134).
6. The lightweight magnesium oxide modification system according to claim 4, characterized in that, The rotary joint (128) is provided with one steam inlet (129) and one steam outlet (130); the tank body (134) is provided with a feed inlet (125) and a discharge outlet (126) on the center vertical line. The feed inlet (125) is connected to the material output end of the reactor connecting pipe (7), and the discharge outlet (126) is connected to the material input end of the bucket elevator B (13); the tank body (134) is provided with four steam inlets (129) and two steam outlets (130). Two steam inlets (129) are located at the upper end of the tank body (134), and the other two steam inlets (129) and two steam outlets (130) are evenly distributed at the lower end of the tank body (134).
7. The lightweight magnesium oxide modification system according to claim 4, characterized in that, A temperature measuring and control instrument (124) is installed at the lower end of the second end of the tank (134), and the temperature measuring probe of the temperature measuring and control instrument (124) faces the internal space of the tank (134); a safety valve (127) is installed at the upper end of the first end of the tank (134); a manhole (133) is provided at 1 / 4 and 3 / 4 of the upper end of the tank (134) from the first end to the second end.
8. The lightweight magnesium oxide modification system according to claim 1, characterized in that, The calcination mechanism includes a pneumatic conveying tank (16), a conveyor belt (17), and a calcination furnace (18); the material input end of the pneumatic conveying tank (16) is connected to the material output end of the modification reaction mechanism, the material output end of the pneumatic conveying tank (16) is connected to the material input end of the conveyor belt (17), and the material output end of the conveyor belt (17) is connected to the material input end of the calcination furnace (18).
9. The lightweight magnesium oxide modification system according to claim 1, characterized in that, The steam generating mechanism includes a water source tank (8), a connecting water pipe (9), a steam generator (10), and a steam pipeline (11); the fluid outlet end of the water source tank (8) is fluidly connected to the fluid inlet end of the connecting water pipe (9), the fluid outlet end of the connecting water pipe (9) is fluidly connected to the fluid inlet end of the steam generator (10), the fluid outlet end of the steam generator (10) is fluidly connected to the fluid inlet end of the steam pipeline (11), and the fluid outlet end of the steam pipeline (11) is fluidly connected to the steam input end of the modified reaction mechanism.
10. The lightweight magnesium oxide modification system according to claim 1, characterized in that, The crushing mechanism includes a crusher (1), a buffer silo A (2), a metering silo (3), a tubular screw conveyor (4), and a bucket elevator A (5); the material output end of the crusher (1) is connected to the material input end of the buffer silo A (2), the material output end of the buffer silo A (2) is connected to the material input end of the metering silo (3), the material output end of the metering silo (3) is connected to the material input end of the tubular screw conveyor (4), and the material output end of the tubular screw conveyor (4) is connected to the material input end of the bucket elevator A (5); The modified reaction mechanism includes a buffer silo B (6), a reactor connecting pipe (7), a reactor (12), a bucket elevator B (13), a buffer silo C (14), and a conveying tank connecting pipe (15); the material input end of the buffer silo B (6) is connected to the material output end of the bucket elevator A (5), the material output end of the buffer silo B (6) is connected to the material input end of the reactor connecting pipe (7), the material output end of the reactor connecting pipe (7) is connected to the material input end of the reactor (12), the material output end of the reactor (12) is connected to the material input end of the bucket elevator B (13), the material output end of the bucket elevator B (13) is connected to the material input end of the buffer silo C (14), and the material output end of the buffer silo C (14) is connected to the material input end of the conveying tank connecting pipe (15); The calcination mechanism includes a pneumatic conveying tank (16), a conveyor belt (17), and a calcination furnace (18); the material input end of the pneumatic conveying tank (16) is connected to the material output end of the conveying tank connecting pipe (15), the material output end of the pneumatic conveying tank (16) is connected to the material input end of the conveyor belt (17), and the material output end of the conveyor belt (17) is connected to the material input end of the calcination furnace (18); The steam generating mechanism includes a water source tank (8), a connecting water pipe (9), a steam generator (10), and a steam pipeline (11); the fluid outlet end of the water source tank (8) is fluidly connected to the fluid inlet end of the connecting water pipe (9), the fluid outlet end of the connecting water pipe (9) is fluidly connected to the fluid inlet end of the steam generator (10), the fluid outlet end of the steam generator (10) is fluidly connected to the fluid inlet end of the steam pipeline (11), and the fluid outlet end of the steam pipeline (11) is fluidly connected to the steam input end of the reactor (12).