A pre-treatment device for producing blast furnace aluminum cement and a production method thereof

Abstract

This invention discloses a pretreatment device and production method for blast furnace alumina mortar production, belonging to the field of refractory material preparation technology. The pretreatment device includes a crushing chamber with a feed hopper at the top; a double-roller crushing mechanism for coarsely crushing the material in the crushing chamber; a drying chamber with a discharge port between the crushing and drying chambers, containing a roller with the discharge port located at the top opening of the roller, which is used for secondary crushing and screening; a crushed material outlet on one side below the drying chamber; a discharge inner pipe at the bottom of the roller for discharging coarse material; a drive mechanism for rotating the roller within the drying chamber; and a heat source chamber containing a heating element. The crushing chamber, drying chamber, and heat source chamber are arranged sequentially from top to bottom, with a heat-conducting plate between the drying chamber and the heat source chamber. This invention solves the problem of transferring material between the crushing and drying devices during blast furnace alumina mortar preparation.

Description

Technical Field

[0001] This invention relates to the field of refractory material preparation technology, and more specifically, to a pretreatment apparatus and production method for producing blast furnace aluminous mortar. Background Technology

[0002] Cementitious mortar is a refractory material used for sealing blast furnace tapholes. Alumina cementitious mortar, containing bauxite in its raw materials, is widely used, along with magnesia cementitious mortar. It is primarily used in large and medium-sized blast furnaces. Current alumina cementitious mortar production processes require separate crushing and drying processes. This material transfer between the crushing and drying units not only increases production costs but also reduces efficiency.

[0003] In view of this, the present invention provides a novel pretreatment device and production method for the production of blast furnace alumina mortar. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention aims to provide a pretreatment device and production method for the production of blast furnace alumina mortar, which solves the problem of transferring blast furnace alumina mortar between crushing and drying devices, saving time and labor and reducing equipment investment.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A pretreatment device for the production of aluminous mortar in blast furnaces includes:

[0007] A crushing chamber, wherein a feed hopper is provided at the top of the crushing chamber;

[0008] A double-roller crushing mechanism is used to coarsely crush the material in the crushing chamber;

[0009] A drying chamber is provided, with a feeding port between the crushing chamber and the drying chamber. A roller is provided inside the drying chamber, and the feeding port is located at the top opening of the roller. The roller is used for screening after secondary crushing. A crushed material outlet is provided on one side below the drying chamber. An inner discharge pipe for discharging coarse material is provided at the bottom of the roller. A drive mechanism for rotating the roller is provided inside the drying chamber.

[0010] The heat source chamber is equipped with a heating element. The crushing chamber, drying chamber, and heat source chamber are arranged sequentially from top to bottom. A heat-conducting plate is arranged between the drying chamber and the heat source chamber.

[0011] A further preferred embodiment is that the drum includes a secondary crushing chamber and a screening chamber located below the secondary crushing chamber;

[0012] The secondary grinding chamber is provided with a guide plate. The guide plate is inclined and its upper end is fixed to the side of the secondary grinding chamber, while its lower end extends to the other side of the secondary grinding chamber. Grinding teeth are provided on both the upper and lower sides of the guide plate and on the inner circumference of the secondary grinding chamber.

[0013] The screening chamber is provided with several discharge holes in the circumferential direction for throwing out crushed material.

[0014] A further preferred embodiment is that at least two guide plates are provided vertically, with the two guide plates located on opposite sides of the secondary crushing chamber.

[0015] A further preferred embodiment is that the drive mechanism includes a first gear, a second gear, a drive motor, a rotating shaft, and a mounting base;

[0016] The first gear is sleeved on the outer circumference of the drum, the first gear is fixedly disposed with the drum, and the first gear is meshed with the second gear;

[0017] The drive motor is mounted on the top of the drying chamber via the mounting base. One end of the rotating shaft is fixed to the output shaft of the drive motor, and the rotating shaft is fixed to the center of the second gear.

[0018] A further preferred embodiment is that a stirring paddle is fixed to the outer wall of the drum, and the stirring paddle is an inclined blade.

[0019] A further preferred embodiment is that a receiving cavity is provided below the heat source cavity, and a discharge control mechanism is provided inside the receiving cavity, the discharge control mechanism being used to control the material discharge from the drum.

[0020] A further preferred embodiment is that the discharge control mechanism includes a disc, a slider, a connecting rod, a spring, a fixing block, and a positioning plate;

[0021] One end of the rotating shaft is fixed to the output shaft of the drive motor, and the other end passes through the second gear and extends downward and inserts into the bottom of the receiving cavity. The disk is located in the receiving cavity and fixed on the rotating shaft. The rotating shaft passes through the center of the disk. A slide rail is provided around the outside of the disk along the circumferential direction of the rotating shaft. The slider is located inside the slide rail. A limiting part is provided on the outside of the slide rail to prevent the slider from being thrown out of the slide rail.

[0022] The inner discharge tube is fitted with an outer discharge tube, which extends downward after passing through the heat source cavity and the receiving cavity. One end of the connecting rod is fixed to the slider, and the other end is fixed with a baffle. The baffle is used to extend into the outer discharge tube to block the inner discharge tube.

[0023] The fixing block is located outside the discharge pipe and fixed to the bottom of the material baffle. The positioning plate is fixed to the bottom of the receiving cavity. The positioning plate is located between the fixing block and the disc. The spring is fixed between the fixing block and the positioning plate.

[0024] A further preferred embodiment is: a limiting plate is fixed to the outside of the discharge pipe, and a sliding groove is provided on the limiting plate, and the slider moves back and forth in the sliding groove along the axial direction of the connecting rod;

[0025] The baffle is used to block the area below the discharge inner tube, and the top surface of the baffle is provided with an inclined surface.

[0026] A further preferred embodiment is that the dual-roll crushing mechanism includes a first crushing roller, a second crushing roller, a first rotating shaft, a second rotating shaft, a crushing motor, a mounting plate, a driving gear, and a driven gear;

[0027] The pulverizing motor is mounted on the outside of the pulverizing chamber via the mounting plate. One end of the first rotating shaft is connected to the output shaft of the pulverizing motor, and the other end extends into the pulverizing chamber after passing through the driving gear. The second rotating shaft is arranged parallel to the first rotating shaft. The driving gear is fixed on the first rotating shaft and meshes with the driven gear. The driven gear is fixed on the second rotating shaft. Both the driving gear and the driven gear are located outside the pulverizing chamber.

[0028] The first crushing roller and the second crushing roller are both located inside the crushing chamber. The first crushing roller is fixed on the first rotating shaft, and the second crushing roller is fixed on the second rotating shaft. The first crushing roller and the second crushing roller are used to crush the material in the crushing chamber.

[0029] A method for producing aluminous mortar for blast furnaces includes the following steps:

[0030] S1. Gradually add the material to be pre-treated into the feed hopper of the pre-treatment device for the production of blast furnace aluminum clay, and start the crushing motor and drive motor to carry out material crushing and drying operations.

[0031] S2. After the crushed material from the drying chamber has cooled, mix it according to the following weight proportions: 10-15 parts white mud, 25-35 parts recycled crushed material from the slide plate, 15-25 parts bauxite, 4-10 parts coke powder, 8-15 parts pyrophyllite, 2-8 parts silicon nitride iron, 10-15 parts silicon carbide, and 2-6 parts kyanite.

[0032] S3. Add the mixed ingredients to the wheel mixer and mix evenly;

[0033] S4. After molding, package the product to obtain blast furnace alumina mortar.

[0034] In summary, the present invention has the following beneficial effects: When the drive motor starts, the rotating shaft and the second gear will rotate synchronously, thereby driving the first gear to rotate. Since the first gear is fixed on the outer surface of the drum, the drum will rotate around its central axis when the first gear rotates. The material after primary crushing enters the drum through the feed port and is further crushed by continuous collision with the baffle and the crushing teeth on the secondary crushing chamber. After secondary crushing, the material enters the screening chamber and is thrown out through the discharge hole under the action of centrifugal force. Large particles that do not meet the particle size requirements will be temporarily collected in the drum. When the drum rotates, the blades will stir the material in the drying chamber to ensure that the material is heated evenly and facilitates drying. The dried material will be discharged through the crushed material outlet. When the rotating shaft rotates, the disc will rotate synchronously with the rotating shaft, so that under the action of centrifugal force, the slider is always located at the outermost edge of the slide rail. At this time, the baffle is blocked below the discharge inner tube. When the drive motor stops, the baffle is automatically pulled out under the action of the spring. At this time, the discharge inner tube is opened and the large particles in the drum are discharged. The discharged large particles can be poured back into the feed hopper for re-crushing. The pretreatment device in this invention can perform crushing, drying and screening, which solves the problem of transferring blast furnace alumina slurry between crushing and drying devices, saving time and effort and reducing equipment investment. Attached Figure Description

[0035] Figure 1 This is a cross-sectional schematic diagram of an embodiment, mainly used to illustrate the internal structure of the pretreatment device for the production of aluminum clay in blast furnaces.

[0036] Figure 2 This is a side view of an embodiment, mainly used to illustrate the overall structure of the pretreatment device for blast furnace aluminum mortar production.

[0037] Figure 3 This is a cross-sectional schematic diagram of an embodiment, mainly used to illustrate the internal structure of the drum;

[0038] Figure 4 This is a partial cross-sectional schematic diagram of an embodiment, mainly used to illustrate the structure of the material discharge control mechanism;

[0039] Figure 5 This is a cross-sectional schematic diagram of an embodiment, mainly used to illustrate the mounting structure of the spring;

[0040] Figure 6 This is a partial cross-sectional view of an embodiment, mainly used to illustrate the mounting structure of the slider.

[0041] In the diagram, 1. Crushing chamber; 2. Drying chamber; 3. Heat source chamber; 4. Receiving chamber; 51. First crushing roller; 52. Second crushing roller; 53. First rotating shaft; 54. Second rotating shaft; 55. Crushing motor; 56. Mounting plate; 57. Drive gear; 6. Drum; 601. Secondary crushing chamber; 602. Screening chamber; 71. First gear; 72. Second gear; 73. Drive motor; 74. Rotating shaft; 75. Mounting base; 8. Stirring paddle; 9. Discharge control mechanism; 91. Disc; 92. Slide rail ; 93. Slider; 94. Connecting rod; 95. Limiting part; 96. Spring; 97. Fixing block; 98. Short column; 99. Positioning plate; 10. Base; 11. Support leg; 12. Baffle; 13. Outer discharge tube; 14. First partition; 15. Heat-conducting plate; 16. Plug; 17. Second partition; 18. Discharge port; 19. Air hole; 20. Feed hopper; 21. Heating tube; 22. Throwing hole; 23. Guide plate; 24. Crushing teeth; 25. Inner discharge tube; 26. Limiting plate; 27. Inclined surface. Detailed Implementation

[0042] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0043] Example 1: A pretreatment device and production method for producing aluminous mortar in blast furnaces, such as... Figure 1-6 As shown, the pretreatment device includes a crushing chamber 1, a base 10, a double-roll crushing mechanism, a drying chamber 2, a heat source chamber 3, and a receiving chamber 4. The crushing chamber 1, drying chamber 2, heat source chamber 3, and receiving chamber 4 are arranged sequentially from top to bottom. A feed hopper 20 is located at the top of the crushing chamber 1, the base 10 is located at the bottom of the receiving chamber 4, and support legs 11 are fixed to the bottom of the receiving chamber 4. The double-roll crushing mechanism is used to coarsely crush the material in the crushing chamber 1. The double-roll crushing mechanism includes a first crushing roller 51, a second crushing roller 52, a first rotating shaft 53, a second rotating shaft 54, a crushing motor 55, a mounting plate 56, a driving gear 57, and a driven gear (not shown in the figure). The crushing motor 55 is mounted on the outside of the crushing chamber 1 via the mounting plate 56. One end of the first rotating shaft 53 is connected to the output shaft of the crushing motor 55, and the other end passes through the driving gear 57 and extends into the crushing chamber 1, where it is inserted into the inner wall of the crushing chamber 1. The second rotating shaft 54 ​​is horizontally parallel to the first rotating shaft 53. The driving gear 57 is fixed on the first rotating shaft 53 and meshes with the driven gear. The driven gear is fixed on the second rotating shaft 54. Both the driving gear 57 and the driven gear are located outside the crushing chamber 1. One end of the second rotating shaft 54 ​​is inserted into the inner wall of the crushing chamber 1, and the other end passes through the second crushing roller 52, the outer shell of the crushing chamber 1, and the driven gear in sequence. The first crushing roller 51 and the second crushing roller 52 are both located inside the crushing chamber 1. The first crushing roller 51 is fixed on the first rotating shaft 53, and the second crushing roller 52 is fixed on the second rotating shaft 54. The first crushing roller 51 and the second crushing roller 52 are used to crush the pre-processed material inside the crushing chamber 1.

[0044] In the above technical solution, when the crushing motor 55 starts, the first rotating shaft 53 will drive the drive gear 57 and the first crushing roller 51 to rotate. Since the drive gear 57 and the driven gear are meshed, when the crushing motor 55 starts, the first crushing roller 51 and the second crushing roller 52 will cooperate to crush the material to be pre-processed.

[0045] Reference Figure 1-6 A first partition 14 is provided between the heat source chamber 3 and the receiving chamber 4. A heat-conducting plate 15 is provided between the drying chamber 2 and the heat source chamber 3. A second partition 17 is provided between the crushing chamber 1 and the drying chamber 2. The height of the second partition 17 gradually decreases from the periphery to the center. A discharge port 18 for connecting the crushing chamber 1 and the drying chamber 2 is opened in the center of the second partition 17. An air hole 19 is provided on one side of the upper part of the drying chamber 2 for water vapor to be discharged. A crushed material outlet is provided on one side of the lower part of the drying chamber 2. The heat-conducting plate 15 gradually slopes downward towards the crushed material outlet so that the crushed material in the drying chamber 2 can be smoothly discharged through the crushed material outlet. A plug 16 is provided at the crushed material outlet. A heating element is provided in the heat source chamber 3. The heating element is an electric heating tube 21 in a turbine shape. The drying chamber 2 is equipped with a drum 6, and the discharge port 18 is located at the top opening of the drum 6. The drum 6 is used to pulverize and screen the material. The bottom of the drum 6 is equipped with a discharge inner pipe 25 for discharging coarse material. The drying chamber 2 is equipped with a drive mechanism for rotating the drum 6.

[0046] Preferably, the drum 6 is a vertical cylindrical shape with an open design. The drum 6 includes a secondary crushing chamber 601 and a screening chamber 602 located below the secondary crushing chamber 601. A guide plate 23 is provided inside the secondary crushing chamber 601. The guide plate 23 is inclined, with its upper end fixed to the side of the secondary crushing chamber 601 and its lower end extending to the other side of the secondary crushing chamber 601. Crushing teeth 24 are provided on both the upper and lower sides of the guide plate 23 and on the inner circumference of the secondary crushing chamber 601. For better crushing effect, two guide plates 23 are further provided, one on each side of the secondary crushing chamber 601. The screening chamber 602 has several discharge holes 22 circumferentially arranged for the discharge of crushed material, allowing the crushed material to enter the drying chamber 2 for drying, while large particles that do not meet the required crushing degree are discharged through the discharge inner pipe 25.

[0047] Preferably, the drive mechanism includes a first gear 71, a second gear 72, a drive motor 73, a rotating shaft 74, and a mounting base 75. The first gear 71 is sleeved on the outer circumference of the drum 6 and is fixedly disposed with the drum 6. The second gear 72 is located on the horizontal side of the first gear 71 and is meshed with the first gear 71. The drive motor 73 is mounted on the top of the drying chamber 2 through the mounting base 75. The rotating shaft 74 is vertically disposed, with one end fixed to the output shaft of the drive motor 73, and the other end passing through the second gear 72, the heat-conducting plate 15, and the first heat-insulating plate in sequence before being inserted into the bottom of the receiving cavity 4. The rotating shaft 74 is centered with the second gear 72.

[0048] To improve the uniformity of heating of the crushed material in the drying chamber 2, a stirring paddle 8 is further fixed on the outer wall of the drum 6. The stirring paddle 8 is an inclined blade.

[0049] Preferably, a discharge control mechanism 9 is provided inside the receiving cavity 4. The discharge control mechanism 9 is used to control the material discharge from the drum 6 and prevent the material from leaking out through the discharge inner pipe 25 when the drum 6 rotates. The discharge control mechanism 9 includes a disc 91, a slider 93, a connecting rod 94, a spring 96, a fixing block 97, and a positioning plate 99. One end of the rotating shaft 74 is fixed to the output shaft of the drive motor 73, and the other end passes through the second gear 72 and extends downward to insert into the bottom of the receiving cavity 4. The disc 91 is located inside the receiving cavity 4 and fixed on the rotating shaft 74. The rotating shaft 74 passes through the center of the disc 91. A slide rail 92 is provided around the outer side of the disc 91 along the circumferential direction of the rotating shaft 74. The slider 93 is located inside the slide rail 92. A limiting part 95 is provided on the outer side of the slide rail 92 to limit the slider 93 from being thrown out of the slide rail 92. The slide rail 92 is annular and the width of the slider 93 is smaller than the width of the slide rail 92. An outer discharge tube 13 is fitted around the inner discharge tube 25. The outer discharge tube 13 passes through the heat source cavity 3 and the receiving cavity 4 and extends downward. One end of the outer discharge tube 13 and the connecting rod 94 is fixed to the slider 93, and the other end is fixed with a baffle 12. The baffle 12 is used to extend into the outer discharge tube 13 to block the inner discharge tube 25. To facilitate smooth material discharge, the baffle 12 is further used to block the bottom of the inner discharge tube 25, and the top surface of the baffle 12 is provided with an inclined surface 27. The fixing block 97 is located outside the outer discharge tube 13 and fixed to the bottom of the material baffle 12. The positioning plate 99 is fixed to the bottom of the receiving cavity 4 and is located between the fixing block 97 and the disc 91. Short columns 98 are fixed on both the positioning plate 99 and the fixing block 97. The spring 96 is fixed between the fixing block and the positioning plate 99 and is fitted onto the outer surface of the two short columns 98. To facilitate the smooth horizontal movement of the baffle 12, a limiting plate 26 is further fixed to the outside of the discharge pipe 13. The limiting plate 26 is provided with a sliding groove, the length direction of which is consistent with the axial direction of the connecting rod 94. The slider 93 moves back and forth in the sliding groove along the axial direction of the connecting rod 94.

[0050] In this invention, when the drive motor 73 starts, the rotating shaft 74 and the second gear 72 will rotate synchronously, thereby driving the first gear 71 to rotate. Since the first gear 71 is fixed on the outer surface of the drum 6, the drum 6 will rotate around its central axis when the first gear 71 rotates. The material after primary crushing enters the drum 6 through the feed port 18 and is further crushed by continuous collision with the baffle 12 and the crushing teeth 24 on the secondary crushing chamber 601. After secondary crushing, the material enters the screening chamber 602 and will be thrown out through the discharge hole 22 under the action of centrifugal force. Large particles that do not meet the particle size requirements will be temporarily collected in the drum 6. When the drum 6 rotates, the blades will stir the material in the drying chamber to ensure that the material is heated evenly and facilitates drying. The dried material will be discharged through the crushed material outlet. When the rotating shaft 74 rotates, the disc 91 rotates synchronously with it. Under centrifugal force, the slider 93 remains on the outermost side of the slide rail 92, and the baffle 12 blocks the bottom of the discharge inner tube 25. When the drive motor 73 stops, the baffle 12 automatically pulls out under the action of the spring 96, opening the discharge inner tube 25 and discharging large particles from the drum 6. The discharged large particles can then be poured back into the feed hopper 20 for further crushing.

[0051] The method for producing blast furnace alumina mortar includes the following steps:

[0052] S1. Gradually add the material to be pre-treated into the feed hopper 20 of the pre-treatment device for blast furnace aluminum clay production, and start the crushing motor 55 and drive motor 73 to carry out material crushing and drying operations.

[0053] S2. After the crushed material from drying chamber 2 has cooled, it is mixed according to the following weight: 10kg white mud, 30kg recycled crushed material from the slide plate, 20kg bauxite, 6kg coke powder, 9kg pyrophyllite, 6kg silicon nitride iron, 11kg silicon carbide, and 4kg kyanite.

[0054] After purchasing the above raw materials, those with particle sizes that do not meet the requirements can be crushed and dried by a pretreatment device before being batched. Typically, pyrophyllite, coke powder, kyanite, etc., require pretreatment.

[0055] S3. Add the mixed ingredients to the wheel mixer and mix evenly;

[0056] S4. After molding, package the product to obtain blast furnace alumina mortar.

[0057] Example 2, a pretreatment device and production method for producing blast furnace alumina mortar, differs from Example 1 in that, in step S2 of the production method, the following ingredients are prepared by weight: 12 kg of white clay, 25 kg of recycled scrap from the slide plate, 15 kg of bauxite, 4 kg of coke powder, 8 kg of pyrophyllite, 2 kg of ferrosilicon nitride, 15 kg of silicon carbide, and 6 kg of kyanite.

[0058] Example 3: A pretreatment device and production method for producing blast furnace alumina mortar. The difference from Example 1 is that in step S2 of the production method, the following materials are prepared by weight: 15 kg of white clay, 35 kg of recycled scrap from the slide plate, 25 kg of bauxite, 10 kg of coke powder, 15 kg of pyrophyllite, 8 kg of ferrosilicon nitride, 10 kg of silicon carbide, and 2 kg of kyanite.

[0059] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A pretreatment device for the production of aluminous mortar in blast furnaces, characterized in that: include: The crushing chamber (1) is provided with a feed hopper (20) at the top. A double-roller crushing mechanism is used to coarsely crush the material in the crushing chamber (1); A drying chamber (2) is provided with a discharge port (18) between the crushing chamber (1) and the drying chamber (2). A roller (6) is provided inside the drying chamber (2). The discharge port (18) is located at the top opening of the roller (6). The roller (6) is used for screening after secondary crushing. A crushed material outlet is provided on one side below the drying chamber (2). A discharge inner pipe (25) for coarse material discharge is provided at the bottom of the roller (6). A drive mechanism for driving the roller (6) to rotate is provided inside the drying chamber (2). Heat source chamber (3), a heating element is provided in the heat source chamber (3), the crushing chamber (1), the drying chamber (2) and the heat source chamber (3) are arranged in order from top to bottom, and a heat conduction plate (15) is provided between the drying chamber (2) and the heat source chamber (3). The drum (6) includes a secondary crushing chamber (601) and a screening chamber (602) located below the secondary crushing chamber (601). The secondary crushing chamber (601) is provided with a guide plate (23). The guide plate (23) is inclined and its upper end is fixed to the side of the secondary crushing chamber (601). Its lower end extends to the other side of the secondary crushing chamber (601). Crushing teeth (24) are provided on the upper and lower sides of the guide plate (23) and on the inner circumference of the secondary crushing chamber (601). The screening chamber (602) is provided with a number of discharge holes (22) in the circumferential direction for discharging crushed material; The drive mechanism includes a first gear (71), a second gear (72), a drive motor (73), a rotating shaft (74), and a mounting base (75). The first gear (71) is sleeved on the outer circumference of the roller (6), the first gear (71) is fixedly disposed with the roller (6), and the first gear (71) is meshed with the second gear (72); The drive motor (73) is mounted on the top of the drying chamber (2) via the mounting base (75), one end of the rotating shaft (74) is fixed to the output shaft of the drive motor (73), and the rotating shaft (74) is fixed to the center of the second gear (72); Below the heat source cavity (3) is a receiving cavity (4), and inside the receiving cavity (4) is a discharge control mechanism (9), which is used to control the material discharge from the drum (6); The discharge control mechanism (9) includes a disc (91), a slider (93), a connecting rod (94), a spring (96), a fixing block (97), and a positioning plate (99). One end of the rotating shaft (74) is fixed to the output shaft of the drive motor (73), and the other end passes through the second gear (72) and extends downward and inserts into the bottom of the receiving cavity (4). The disc (91) is located in the receiving cavity (4) and fixed on the rotating shaft (74). The rotating shaft (74) passes through the center of the disc (91). A slide rail (92) is provided around the outer side of the disc (91) along the circumferential direction of the rotating shaft (74). The slider (93) is located inside the slide rail (92). A limiting part (95) is provided on the outer side of the slide rail (92) to limit the slider (93) from being thrown out of the slide rail (92). The discharge inner tube (25) is fitted with a discharge outer tube (13). The discharge outer tube (13) passes through the heat source cavity (3) and the receiving cavity (4) and extends downward. One end of the connecting rod (94) is fixed to the slider (93), and the other end is fixed with a baffle (12). The baffle (12) is used to extend into the discharge outer tube (13) to block the discharge inner tube (25). The fixing block (97) is located outside the discharge pipe (13) and fixed at the bottom of the baffle (12). The positioning plate (99) is fixed at the bottom of the receiving cavity (4). The positioning plate (99) is located between the fixing block (97) and the disc (91). The spring (96) is fixed between the fixing block (97) and the positioning plate (99).

2. The pretreatment device for blast furnace aluminous mortar production according to claim 1, characterized in that: At least two guide plates (23) are provided vertically, with the two guide plates (23) located on opposite sides of the secondary crushing chamber (601).

3. The pretreatment device for blast furnace aluminous mortar production according to claim 1, characterized in that: The outer wall of the drum (6) is fixed with a stirring paddle (8), which is an oblique blade.

4. The pretreatment device for blast furnace aluminous mortar production according to claim 1, characterized in that: A limiting plate (26) is fixed on the outside of the discharge pipe (13). A sliding groove is provided on the limiting plate (26). The baffle (12) moves back and forth in the sliding groove along the axial direction of the connecting rod (94). The baffle (12) is used to block the bottom of the discharge inner tube (25), and the top surface of the baffle (12) is provided with an inclined surface (27).

5. The pretreatment device for blast furnace aluminous mortar production according to claim 1, characterized in that: The double-roll crushing mechanism includes a first crushing roller (51), a second crushing roller (52), a first rotating shaft (53), a second rotating shaft (54), a crushing motor (55), a mounting plate (56), a driving gear (57), and a driven gear; The crushing motor (55) is mounted on the outside of the crushing chamber (1) via the mounting plate (56). One end of the first rotating shaft (53) is connected to the output shaft of the crushing motor (55), and the other end extends into the crushing chamber (1) after passing through the driving gear (57). The second rotating shaft (54) is arranged parallel to the first rotating shaft (53). The driving gear (57) is fixed on the first rotating shaft (53) and meshes with the driven gear. The driven gear is fixed on the second rotating shaft (54). Both the driving gear (57) and the driven gear are located outside the crushing chamber (1). The first crushing roller (51) and the second crushing roller (52) are both located in the crushing chamber (1). The first crushing roller (51) is fixed on the first rotating shaft (53), and the second crushing roller (52) is fixed on the second rotating shaft (54). The first crushing roller (51) and the second crushing roller (52) are used to crush the material in the crushing chamber (1).

6. A method for producing aluminous mortar for blast furnaces, characterized in that: Includes the following steps: S1. Gradually add the material to be pre-treated into the feed hopper (20) of the pre-treatment device for the production of blast furnace aluminum clay as described in any one of claims 1-5, and start the crushing motor (55) and drive motor (73) to carry out material crushing and drying operations. S2. After the crushed material from the drying chamber (2) has cooled down, it is mixed according to the following weight proportions: 10-15 parts white mud, 25-35 parts recycled crushed material from the slide plate; 15-25 parts bauxite; 4-10 parts coke powder; 8-15 parts pyrophyllite; 2-8 parts silicon nitride iron; 10-15 parts silicon carbide; and 2-6 parts kyanite. S3. Add the mixed ingredients to the wheel mixer and mix evenly; S4. After molding, package the product to obtain blast furnace alumina mortar.

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