High-purity magnesia production device

Abstract

The utility model belongs to the technical field of high-purity magnesia production, and particularly relates to a high-purity magnesia production device which comprises a shaft kiln, the shaft kiln is communicated with a waste gas pipe, the gas outlet end of the waste gas pipe is communicated with a filter box, a fixed frame is fixedly arranged on the inner wall face of the filter box, and a filter mechanism is arranged on the fixed frame. The filtering mechanism comprises a movable frame, an activated carbon plate and a limiting frame, the top surface of the fixed frame makes contact with the movable frame, the activated carbon plate is installed in the movable frame, the limiting frame is fixedly arranged on the top surface of the movable frame, the gas outlet end of the waste gas pipe is located below the activated carbon plate, and the side wall of the filtering box communicates with an exhaust pipe. The exhaust pipe is located above the activated carbon plate, and a cover plate covers an opening in the upper end of the filter box. Waste gas can be filtered through the activated carbon plate, and part of impurities fall into the dust collection box under the action of gravity, so that a large number of impurities can be prevented from being accumulated on the surface of the activated carbon plate to influence the filtering effect of the activated carbon plate.

Description

Technical Field

[0001] This utility model belongs to the field of high-purity magnesia production technology, and in particular relates to a high-purity magnesia production device. Background Technology

[0002] High-purity magnesia is an important raw material for refractory materials, and magnesia refractories are widely used in high-temperature industries such as metallurgy and building materials. Currently, high-purity magnesia is mainly produced by vertical kilns. Magnesite or lightly calcined magnesia is briquetteted into raw materials, then calcined at high temperatures in a vertical kiln to completely remove CO2, forming high-purity magnesia. However, existing vertical kilns used for high-purity magnesia production emit large amounts of waste gas, polluting the surrounding environment. Utility Model Content

[0003] In view of the shortcomings of the existing technology, this utility model provides a high-purity magnesia production device, which solves the technical problem that the existing vertical kilns used for high-purity magnesia production emit a large amount of waste gas and pollute the surrounding environment.

[0004] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0005] A high-purity magnesia production apparatus, characterized in that it includes a vertical kiln, the vertical kiln being connected to an exhaust gas pipe, the exhaust gas pipe's outlet being connected to a filter box, a fixed frame being fixedly provided on the inner wall of the filter box, a filter mechanism being provided on the fixed frame, the filter mechanism including a movable frame, an activated carbon plate, and a limiting frame, the top surface of the fixed frame contacting the movable frame, the activated carbon plate being installed inside the movable frame, the limiting frame being fixedly provided on the top surface of the movable frame, the exhaust gas pipe's outlet being located below the activated carbon plate, an exhaust pipe being connected to the side wall of the filter box, the exhaust pipe being located above the activated carbon plate, a cover plate covering the upper opening of the filter box, multiple springs being fixedly provided on the bottom surface of the cover plate, pressure plates being fixedly provided at the lower ends of the multiple springs, and the pressure plates contacting the top surface of the limiting frame.

[0006] Furthermore, two fixing blocks are fixedly provided on the upper two side walls of the filter box, and a portal frame is fixedly provided on the top surface of the two fixing blocks. A hydraulic cylinder is fixedly installed on the top wall of the portal frame, and the telescopic end of the hydraulic cylinder is fixedly connected to the top surface of the cover plate.

[0007] Furthermore, a dust collection box is connected to the bottom surface of the filter box.

[0008] Furthermore, a conical hopper is connected to the bottom surface of the filter box, and the conical hopper is connected to the dust collection box.

[0009] Furthermore, the dust collection box is equipped with a cleaning door on the front.

[0010] Furthermore, multiple guide rods are slidably provided inside the top wall of the portal frame, and the lower end of the guide rods is fixedly connected to the top surface of the cover plate.

[0011] Furthermore, a first sealing ring is fixedly provided on the bottom surface of the cover plate.

[0012] Furthermore, a second sealing ring is fixedly provided on the bottom surface of the movable frame.

[0013] The beneficial effects of this utility model are:

[0014] 1. The waste gas generated during the production of high-purity magnesia in the vertical kiln enters the filter box through the waste gas pipe. The waste gas is filtered by the activated carbon plate, and some impurities fall into the dust collection box under the action of gravity. This prevents a large amount of impurities from accumulating on the surface of the activated carbon plate and affecting the filtration effect of the activated carbon plate. The filtered gas enters the exhaust pipe, which solves the technical problem that the existing vertical kiln used for the production of high-purity magnesia will emit a large amount of waste gas and pollute the surrounding environment.

[0015] 2. The lifting of the cover plate can move the pressure plate away from the limit frame, thereby removing the filter mechanism from the filter box and placing the new filter mechanism inside. The extension of the hydraulic cylinder can drive the cover plate to descend and press against the edge of the upper opening of the filter box, facilitating the quick replacement of the filter mechanism. At this time, the pressure plate presses against the limit frame, and the spring compression can provide continuous pressure to the limit frame to prevent the movable frame from loosening.

[0016] 3. The dust collection box is easy to clean by having a cleaning door. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0018] Figure 2 This is a three-dimensional schematic diagram of the interior of the filter box in this utility model. Figure 1 ;

[0019] Figure 3 This is a three-dimensional schematic diagram of the interior of the filter box in this utility model. Figure 2 .

[0020] In the diagram: 1. Vertical kiln; 2. Exhaust gas pipe; 3. Hydraulic cylinder; 4. Guide rod; 5. Gantry frame; 6. Cover plate; 7. First sealing ring; 8. Fixing block; 9. Cleaning door; 10. Filter box; 11. Exhaust pipe; 12. Dust collection box; 13. Conical hopper; 14. Fixed frame; 15. Movable frame; 16. Activated carbon plate; 17. Pressure plate; 18. Limiting frame; 19. Second sealing ring; 20. Spring. Detailed Implementation

[0021] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1-3 As shown, this utility model provides a high-purity magnesia production device, including a vertical kiln 1, a waste gas pipe 2 connected to the vertical kiln 1, and a filter box 10 connected to the outlet end of the waste gas pipe 2. A fixed frame 14 is fixedly installed on the inner wall of the filter box 10, and a filter mechanism is installed on the fixed frame 14. The filter mechanism includes a movable frame 15, an activated carbon plate 16, and a limiting frame 18. The top surface of the fixed frame 14 contacts the movable frame 15, the activated carbon plate 16 is installed inside the movable frame 15, and the limiting frame 18 is fixedly installed on the top surface of the movable frame 15. The outlet end of the waste gas pipe 2 is located below the activated carbon plate 16. An exhaust pipe 11 is connected to the side wall of the filter box 10 and is located above the activated carbon plate 16. A cover plate 6 is installed over the upper opening of the filter box 10, and multiple... A spring 20, and multiple springs 20 are fixedly fitted with a pressure plate 17 at their lower ends, which contacts the top surface of the limit frame 18; two fixing blocks 8 are fixedly fitted on the upper two side walls of the filter box 10, and a portal frame 5 is fixedly fitted on the top surface of the two fixing blocks 8; a hydraulic cylinder 3 is fixedly installed on the top wall of the portal frame 5, and the telescopic end of the hydraulic cylinder 3 is fixedly connected to the top surface of the cover plate 6; a dust collection box 12 is connected to the bottom surface of the filter box 10; a conical hopper 13 is connected to the bottom surface of the filter box 10, and the conical hopper 13 is connected to the dust collection box 12; a cleaning door 9 is provided on the front of the dust collection box 12; multiple guide rods 4 are slidably fitted inside the top wall of the portal frame 5, and the lower ends of the guide rods 4 are fixedly connected to the top surface of the cover plate 6; a first sealing ring 7 is fixedly fitted on the bottom surface of the cover plate 6; a second sealing ring 19 is fixedly fitted on the bottom surface of the movable frame 15.

[0023] During use, the waste gas generated by the vertical kiln 1 during the production of high-purity magnesia enters the filter box 10 through the waste gas pipe 2. The waste gas is filtered by the activated carbon plate 16, and some impurities fall into the dust collection box 12 under the action of gravity, thereby preventing a large amount of impurities from accumulating on the surface of the activated carbon plate 16 and affecting the filtration effect of the activated carbon plate 16. The filtered gas enters the exhaust pipe 11, which solves the technical problem that the existing vertical kiln used for the production of high-purity magnesia will emit a large amount of waste gas and pollute the surrounding environment.

[0024] When the filter mechanism needs to be replaced, the hydraulic cylinder 3 shortens, which drives the cover plate 6 to rise. The rise of the cover plate 6 drives the pressure plate 17 away from the limit frame 18, thereby removing the filter mechanism from the filter box 10. The new filter mechanism is then placed in the filter box 10, and the second sealing ring 19 contacts the top surface of the fixed frame 14. The extension of the hydraulic cylinder 3 drives the cover plate 6 to fall and press against the edge of the upper opening of the filter box 10, facilitating the quick replacement of the filter mechanism. At this time, the pressure plate 17 presses against the limit frame 18, and the compression of the spring 20 provides continuous pressure to the limit frame 18 to prevent the movable frame 15 from loosening.

[0025] The sealing effect of the filter box 10 can be improved by providing a second sealing ring 19 and a first sealing ring 7.

[0026] The dust collection box 12 is easy to clean by the cleaning door 9.

[0027] The stability of the cover plate 6 during lifting can be improved by equipping it with multiple guide rods 4.

[0028] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any modifications, alterations, substitutions, and variations made by those skilled in the art to the above embodiments are within the scope of the present invention.

Claims

1. A high-purity magnesia production apparatus, characterized in that, The system includes a vertical kiln (1), which is connected to a waste gas pipe (2). The outlet end of the waste gas pipe (2) is connected to a filter box (10). A fixed frame (14) is fixedly installed on the inner wall of the filter box (10). A filtration mechanism is provided on the fixed frame (14). The filtration mechanism includes a movable frame (15), an activated carbon plate (16), and a limiting frame (18). The top surface of the fixed frame (14) contacts the movable frame (15). The activated carbon plate (16) is installed inside the movable frame (15). The limiting frame (18) is fixedly installed on the top surface of the movable frame (15). The outlet end of the waste gas pipe (2) is located below the activated carbon plate (16). An exhaust pipe (11) is connected to the side wall of the filter box (10). The exhaust pipe (11) is located above the activated carbon plate (16). A cover plate (6) is placed over the upper opening of the filter box (10). Multiple springs (20) are fixedly installed on the bottom surface of the cover plate (6). Multiple springs (20) are fixedly provided with pressure plates (17) at their lower ends, and the pressure plates (17) are in contact with the top surface of the limiting frame (18); two fixing blocks (8) are fixedly provided on the upper two side walls of the filter box (10), and a portal frame (5) is fixedly provided on the top surface of the two fixing blocks (8). A hydraulic cylinder (3) is fixedly installed on the top wall of the portal frame (5), and the telescopic end of the hydraulic cylinder (3) is fixedly connected to the top surface of the cover plate (6); a dust collection box (12) is connected to the bottom surface of the filter box (10); a conical hopper (13) is connected to the bottom surface of the filter box (10), and the conical hopper (13) is connected to the dust collection box (12); a cleaning door (9) is provided on the front of the dust collection box (12); the activated carbon plate (16) can filter the exhaust gas, and some impurities fall into the dust collection box (12) under the action of gravity, thereby preventing a large number of impurities from accumulating on the surface of the activated carbon plate (16) and affecting the filtration effect of the activated carbon plate (16).

2. The high-purity magnesia production apparatus according to claim 1, characterized in that, Multiple guide rods (4) are slidably provided inside the top wall of the portal frame (5), and the lower end of the guide rods (4) is fixedly connected to the top surface of the cover plate (6).

3. The high-purity magnesia production apparatus according to claim 1, characterized in that, The bottom surface of the cover plate (6) is fixedly provided with a first sealing ring (7).

4. The high-purity magnesia production apparatus according to claim 1, characterized in that, The bottom surface of the movable frame (15) is fixedly provided with a second sealing ring (19).

Images