Manufacturing process of hollow sphere refractory brick

Abstract

The invention discloses a manufacturing process of a hollow sphere refractory brick. The preparation method comprises the following steps: step 1, putting 40-45wt% of aluminum oxide hollow spheres, 25-35wt% of aluminum oxide powder, 10-15wt% of a binding agent and 10-15wt% of zirconium oxide into a stirrer, and uniformly mixing to form pug; 2, pug is poured into the brick mold and subjected to vibration forming through a vibration machine, and a green brick is formed; step 3, standing the green brick at room temperature for 8-16 hours, then putting the green brick into a dryer, and drying the green brick at 80-150 DEG C for 16-30 hours; and step 4, putting the heated green brick into the tunnel kiln, and firing the green brick at 1600-1800 DEG C for 5-7 hours to form a finished product of the hollow-sphere refractory brick. The preparation method has the beneficial effects that the fire resistance of the hollow-sphere refractory brick is improved, the mechanical strength of the hollow-sphere refractory brick is improved, and the application range of the hollow-sphere refractory brick is expanded; the product quality is improved; the forming quality of the bricks is improved; and the working noise of the vibrator is reduced.

Description

Technical Field

[0001] The invention relates to the technical field related to the manufacture of hollow ball refractory bricks, in particular to a manufacturing process of hollow ball refractory bricks. Background Art

[0002] Hollow ball bricks refer to refractory materials made of refractory hollow balls. Hollow ball bricks have low apparent porosity, low thermal conductivity, good thermal shock resistance, and high high-temperature structural strength. They can be directly laid on the lining of high-temperature kilns in contact with flames, as well as to manufacture high-temperature furnace pipes, trays, protective covers, etc.

[0003] Currently, most commonly used hollow ball bricks are made of alumina powder and phosphoric acid, with an Al2O3 content of more than 95%. The overall composition is relatively simple, and there is room for improvement in terms of fire resistance and mechanical strength, and the scope of use is also limited.

[0004] In summary, there is a need for a manufacturing process for hollow spherical refractory bricks that can improve refractory properties and mechanical strength. Summary of the invention

[0005] The present invention aims to overcome the shortcomings of the prior art that most hollow ball bricks are made of alumina powder and phosphoric acid, with an Al2O3 content of more than 95%, a relatively simple overall composition, and need to be improved in terms of refractory performance and mechanical strength, and provides a manufacturing process for hollow ball refractory bricks that can improve refractory performance and mechanical strength.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A manufacturing process of hollow ball refractory bricks comprises the following steps: Step 1: 40-45 wt% of alumina hollow balls, 25-35 wt% of alumina powder, 10-15 wt% of a binder, and 10-15 wt% of zirconium oxide are put into a mixer and mixed evenly to form a mud material; Step 2, pouring mud into a brick mold and vibrating it through a vibrator to form a brick blank; Step 3, leaving the bricks at room temperature for 8 to 16 hours, and then placing them in a dryer to dry them at 80 to 150° C. for 16 to 30 hours; Step 4: Place the heated bricks into a tunnel kiln and fire them at 1600-1800°C for 5-7 hours to form hollow spherical refractory bricks.

[0007] The present invention adopts zirconium oxide as the auxiliary material for manufacturing hollow ball refractory bricks, so that the manufactured hollow ball refractory bricks have high melting point and high temperature resistance as well as high hardness and strength, thereby improving the refractory performance of the hollow ball refractory bricks, increasing the mechanical strength of the hollow ball refractory bricks, and expanding the application range of the hollow ball refractory bricks.

[0008] Preferably, during the vibration molding process, the clay in the brick mold is pressed once every 20 to 30 seconds with a pressing plate, and clay is immediately added to the brick mold after pressing until the brick mold is filled. The intermittent pressing operation can fully compact the clay in the brick mold, increase the molding density of the brick, so that the hollow ball refractory bricks produced have higher structural strength and improve product quality.

[0009] Preferably, during drying, the dryer operates at a temperature of 120-150°C in the first 1 / 3 of the drying time, and operates at a temperature of 80-120°C in the last 2 / 3 of the drying time. Drying the green bricks at a high temperature and quickly in the first 1 / 3 of the drying time can quickly evaporate the water in the green bricks, effectively improving the drying efficiency, while drying the green bricks at a low temperature and for a long time in the last 2 / 3 of the drying time can fully evaporate the residual water in the green bricks while avoiding cracking and deformation due to the high temperature of the green bricks, thereby improving the molding quality of the bricks.

[0010] Preferably, the vibration machine includes a frame panel, a fixed trough body is fixed on the frame panel, a placement frame is arranged inside the fixed trough body, the inner bottom surface of the fixed trough body and the outer bottom surface of the placement frame are connected by a plurality of lower fixed springs, the outer side wall of each side of the placement frame and the inner side wall of the fixed trough body are connected by a plurality of side fixed springs, and a vibration motor is fixed on the placement frame. The placement frame is used to place a brick mold containing mud, and the mud in the brick mold is vibrated and formed by the vibration generated by the vibration motor. The bottom of the placement frame is connected to the bottom of the fixed trough body by the lower fixed spring, and the side of the placement frame is connected to the side of the fixed trough body by the side fixed spring. The connection design of the lower fixed spring and the side fixed spring avoids direct contact between the placement frame and the fixed trough body, can fully buffer and absorb the vibration energy generated by the placement frame, prevent the vibration generated by the placement frame from being transmitted to the fixed trough body and the frame panel, and greatly reduce the working noise of the vibration machine.

[0011] Preferably, the placement frame is provided with a side top plate 1 and a side top plate 2, a side slide bar 1 is fixed on the side top plate 1, a slide bar through hole 1 matching the side slide bar 1 is provided on the side wall of the placement frame, the side top plate 1 is installed on the side wall of the placement frame through the cooperation of the side slide bar 1 and the slide bar through hole 1 and is connected to the side wall by sliding left and right, the side top plate 2 is fixed on the side top plate 2, a slide bar through hole 2 matching the side slide bar 2 is provided on the other side wall of the placement frame through the cooperation of the side slide bar 2 and the slide bar through hole 2 and is connected to the side wall by sliding forward and backward, and the placement frame is also provided with a locking mechanism 1 connected to the side top plate 1 and the side top plate 2. Through the cooperation of the side slide bar 1 and the slide bar through hole 1, it is convenient to install the side top plate 1 in the placement frame, and it plays a guiding role in the movement of the side top plate 1; through the cooperation of the side slide bar 2 and the slide bar through hole 2, it is convenient to install the side top plate 2 in the placement frame, and it plays a guiding role in the movement of the side top plate 2. After the brick mold is placed in the placement frame, the position of the brick mold in the left-right direction can be fixed by pushing the side top plate 1 toward the brick mold and pressing the brick mold against the inner wall of the placement frame, and the position of the brick mold in the front-back direction can be fixed by pushing the side top plate 2 toward the brick mold and pressing the brick mold against the other inner wall of the placement frame. After the side top plate 1 and the side top plate 2 jointly press the brick mold against the inner wall of the placement frame, the side top plate 1 and the side top plate 2 are locked by a locking mechanism, and the position of the brick mold on the horizontal plane can be fixed.

[0012] Preferably, the side top plate 1 and the side top plate 2 are both fixed with screws, the side wall of the placement frame is provided with screw holes matching the screws, the screws are placed in the screw holes and the two are movably connected, the locking mechanism 1 includes a fastening nut sleeved on the screws, the fastening nut and the screws are threadedly connected, the fastening nut is placed inside the placement frame, and the width of the fastening nut is greater than the width of the screw holes. When the side top plate 1 and the side top plate 2 jointly push the brick mold against the inner wall of the placement frame, the fastening nut on the screw of the side top plate 1 and the fastening nut on the screw of the side top plate 2 are rotated, and the fastening nut is tightened on the inner wall of the placement frame, so that the side top plate 1 and the side top plate 2 can be locked, which has a simple structure, convenient operation, and good fixing effect.

[0013] Preferably, the top of the first side top plate and the top of the second side top plate are both provided with a vertical opening, a lower top block is provided in the vertical opening, a vertical slide groove is provided on the side wall of the vertical opening, a vertical slider matching the vertical slide groove is provided on the side of the lower top block, the lower top block is slidably connected with the vertical opening up and down through the cooperation of the vertical slider and the vertical slide groove, a lower top plate is provided on the lower top block, the lower top plate is fixed to the side of the lower top block away from the fastening nut, a tooth bar is fixed on the bottom surface of the vertical slide groove, a locking tooth matching the tooth bar is provided on the vertical slider, and a locking mechanism 2 connected with the vertical slider is also installed on the lower top block. Through the cooperation of the vertical slider and the vertical slide groove, it is convenient to install the lower top block in the vertical opening, and the movement of the lower top block is guided. After the side top plates 1 and 2 have fixed the brick mould in the horizontal position, push the lower top block in the vertical opening downward so that the lower top plate on the lower top block presses the brick mould from top to bottom, and then control the vertical slider on the lower top block to move toward the bottom of the vertical slide groove through locking mechanism 2, so that the locking teeth on the vertical slider are engaged and fixed with the toothed bar on the bottom of the vertical slide groove, thereby locking the position of the vertical slider and the lower top block, thereby completing the vertical position fixation of the brick mould.

[0014] Preferably, a cavity is provided inside the lower top block, a rotating rod hole is provided on the top surface of the cavity, the locking mechanism 2 comprises a rotating rod matching the rotating rod hole, the inner wall of the rotating rod hole is threadedly connected to the outer wall of the rotating rod, the top end of the rotating rod is placed outside the lower top block and a knob is fixed thereon, the bottom end of the rotating rod is placed in the cavity and a guide block 1 is installed thereon, the guide block 1 is rotatably connected to the rotating rod, the guide block 1 is slidably connected to the cavity up and down, a connecting rod hole is provided on the side wall of the cavity, a connecting rod is slidably connected in the connecting rod hole, one end of the connecting rod is placed outside the lower top block and is fixed to the lower wall of the lower top block. The slider is fixedly connected, and the other end of the connecting rod is placed inside the cavity and a guide block 2 is fixed thereon, the guide block 2 is slidably connected to the cavity, a guide slope 1 is provided on the side of the guide block 1 facing the guide block 2, the guide slope 1 is inclined from top to bottom in a direction away from the guide block 2, a guide slope 2 is provided on the guide block 2 matching the guide slope 1, the guide slope 2 is parallel to the guide slope 1 and the two are in contact with each other, a return spring is sleeved on the connecting rod, one end of the return spring is connected to the inner wall of the cavity, and the other end of the return spring is connected to the guide block 2. After the lower top plate on the lower top block presses against the brick mold, rotate the knob on the rotating rod, and the guide block 1 will be driven to move downward under the cooperation of the rotating rod hole and the thread of the rotating rod. At this time, through the cooperation design of guide bevel 1 and guide bevel 2, guide block 2 and the connecting rod and vertical slider on it will be driven to move toward the bottom surface of the vertical slide groove, so that the locking teeth on the vertical slider are engaged and fixed with the toothed bar on the bottom surface of the vertical slide groove, so as to achieve locking of the position of the vertical slider and the lower top block, thereby completing the fixation of the position of the brick mold in the vertical direction, with a simple structure and convenient operation.

[0015] Preferably, a pressure plate bracket is provided above the placement frame, the pressure plate bracket is fixedly connected to the placement frame, a lifting rod is provided on the pressure plate bracket, the lifting rod and the pressure plate are slidably connected up and down, a lifting plate is fixed at the bottom end of the lifting rod, a pressure plate is provided below the lifting plate, and the lifting plate and the pressure plate are connected by a plurality of buffer springs. A cylinder for controlling the up and down movement of the lifting rod is fixed on the pressure plate bracket. During the vibration forming process, the lifting plate and the pressure plate below it are driven downward by the lifting rod to compact the mud in the brick mold, thereby improving the forming density of the brick, so that the hollow spherical refractory bricks produced have higher structural strength and improve the product quality. The lifting plate and the pressure plate below it are connected by buffer springs, which can well reduce the transmission and influence of the pressing impact force, protect other parts from damage, and also slow down the propagation speed and influence of mechanical vibration, and reduce vibration noise.

[0016] Preferably, the pressure plate bracket and the placement frame are fixedly connected by a plurality of fixing rods, the lifting plate is provided with a lifting guide hole matching the fixing rod, the fixing rod is placed in the lifting guide hole, the lifting plate and the fixing rod are connected by sliding up and down, a plurality of downward pressing guide rods are fixed on the pressure plate, the lifting plate is provided with a guide rod through hole matching the downward pressing guide rod, the downward pressing guide rod is placed in the guide rod through hole and connected by sliding up and down with the guide rod. The matching design of the lifting guide hole and the fixing rod makes it convenient to install the lifting plate on the pressure plate bracket, and guides the movement of the lifting plate, and improves the working accuracy.

[0017] The beneficial effects of the present invention are: improving the refractory performance of hollow ball refractory bricks, increasing the mechanical strength of hollow ball refractory bricks, expanding the application range of hollow ball refractory bricks; improving product quality; improving the molding quality of bricks; reducing the working noise of the vibrator; having a simple structure, convenient operation, good fixing effect, and improving working accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the present invention; Figure 2 is a top view of the present invention; Figure 3 yes Figure 1 Sectional view at AA in the middle; Figure 4 yes Figure 1 Sectional view at the middle BB; Figure 5 yes Figure 2 Sectional view at CC; Figure 6 This is the internal structure diagram of the lower top block.

[0019] In the figure: 1. Rack panel, 2. Fixed slot, 3. Placement frame, 4. Lower fixing spring, 5. Side fixing spring, 6. Vibration motor, 7. Side top plate 1, 8. Side top plate 2, 9. Side slide bar 1, 10. Slide bar through hole 1, 11. Side slide bar 2, 12. Slide bar through hole 2, 13. Screw rod, 14. Screw rod through hole, 15. Fastening nut, 16. Vertical opening, 17. Lower top block, 18. Vertical slide groove, 19. Vertical slide block, 20. Lower top plate, 21. Card rack, 22. Locking tooth, 23. Cavity, 24. Rotating rod hole, 25. Rotating rod, 26. Guide block 1, 27. Connecting rod hole, 28. Connecting rod, 29. Guide block 2, 30. Reset spring, 31. Pressure plate bracket, 32. Lifting rod, 33. Lifting plate, 34. Pressing plate, 35. Buffer spring, 36. Fixing rod, 37. Lifting guide hole, 38. Pressing guide rod, 39. Guide rod through hole, 40. Brick mold. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] A manufacturing process of hollow ball refractory bricks comprises the following steps: Step 1: put 45 wt% of alumina hollow balls, 30 wt% of alumina powder, 10 wt% of a binder, and 15 wt% of zirconium oxide into a blender and mix them evenly to form a slurry; Step 2, pouring mud into a brick mold and vibrating it through a vibrator to form a brick blank; Step 3, leaving the bricks at room temperature for 8 hours, and then placing them in a dryer to dry them at 90-130° C. for 18 hours; Step 4: Place the heated bricks into a tunnel kiln and fire them at 1680°C for 6 hours to form hollow spherical refractory bricks.

[0022] During the vibration molding process, the clay in the brick mold 40 is pressed once every 25 seconds by the pressing plate 34, and clay is immediately added to the brick mold 40 after pressing until the brick mold 40 is filled.

[0023] During drying, the dryer operates at a temperature of 130°C in the first 1 / 3 of the drying time and at a temperature of 90°C in the last 2 / 3 of the drying time.

[0024] like Figure 1 , Figure 2 and Figure 5In the described embodiment, the vibration machine includes a frame panel 1, a fixed trough body 2 is fixed on the frame panel 1, a placement frame 3 is provided inside the fixed trough body 2, the inner bottom surface of the fixed trough body 2 and the outer bottom surface of the placement frame 3 are connected by a plurality of lower fixed springs 4, the outer side wall of each side of the placement frame 3 and the inner side wall of the fixed trough body 2 are connected by a plurality of side fixed springs 5, and a vibration motor 6 is fixed on the placement frame 3.

[0025] like Figure 1 and Figure 4 As shown, the interior of the placement frame 3 is provided with a side top plate 1 7 and a side top plate 2 8, a side slide bar 1 9 is fixed on the side top plate 1 7, a slide bar through hole 10 matching the side slide bar 1 9 is provided on the side wall of the placement frame 3, the side top plate 1 7 is installed on the side wall of the placement frame 3 through the cooperation of the side slide bar 1 9 and the slide bar through hole 10 and is connected to the side wall for left and right sliding therewith, a side slide bar 2 11 is fixed on the side top plate 2 8, a slide bar through hole 2 12 matching the side slide bar 2 11 is provided on the other side wall of the placement frame 3, the side top plate 2 8 is installed on the other side wall of the placement frame 3 through the cooperation of the side slide bar 2 11 and the slide bar through hole 2 12 and is connected to the side wall for front and back sliding therewith, and a locking mechanism 1 connected to the side top plate 1 7 and the side top plate 2 8 is also provided on the placement frame 3.

[0026] like Figure 1 and Figure 4 As shown, screws 13 are fixed on the side top plate 1 7 and the side top plate 2 8, and a screw through hole 14 matching the screw 13 is provided on the side wall of the placement frame 3. The screw 13 is placed in the screw through hole 14 and the two are movably connected. The locking mechanism 1 includes a fastening nut 15 sleeved on the screw 13, the fastening nut 15 and the screw 13 are threadedly connected, the fastening nut 15 is placed inside the placement frame 3, and the width of the fastening nut 15 is greater than the width of the screw through hole 14.

[0027] like Figure 1 , Figure 3 and Figure 6 As shown, the top of the side top plate 1 7 and the top of the side top plate 2 8 are both provided with a vertical opening 16, and a lower top block 17 is arranged in the vertical opening 16. A vertical slide groove 18 is arranged on the side wall of the vertical opening 16, and a vertical slider 19 matching the vertical slide groove 18 is arranged on the side of the lower top block 17. The lower top block 17 is slidably connected with the vertical opening 16 up and down through the cooperation of the vertical slider 19 and the vertical slide groove 18. A lower top plate 20 is arranged on the lower top block 17, and the lower top plate 20 is fixed on the side of the lower top block 17 away from the fastening nut 15. A card rack 21 is fixed on the bottom surface of the vertical slide groove 18, and a locking tooth 22 matching the card rack 21 is arranged on the vertical slider 19. A locking mechanism 2 connected with the vertical slider 19 is also installed on the lower top block 17.

[0028] like Figure 1 , Figure 3 and Figure 6 As shown, a cavity 23 is provided inside the lower top block 17, and a rotating rod hole 24 is provided on the top surface of the cavity 23. The locking mechanism 2 includes a rotating rod 25 matching the rotating rod hole 24. The inner wall of the rotating rod hole 24 is threadedly connected to the outer wall of the rotating rod 25. The top end of the rotating rod 25 is placed outside the lower top block 17 and a knob is fixed thereon. The bottom end of the rotating rod 25 is placed in the cavity 23 and a guide block 26 is installed thereon. The guide block 26 is rotatably connected to the rotating rod 25, and the guide block 26 is slidably connected to the cavity 23 up and down. A connecting rod hole 27 is provided on the side wall of the cavity 23. A connecting rod 28 is slidably connected in the connecting rod hole 27. One end of the connecting rod 28 is placed on the lower top block 17 The outside of the cavity 23 is fixedly connected to the slider, the other end of the connecting rod 28 is placed inside the cavity 23 and a guide block 29 is fixed thereon, the guide block 29 is slidably connected to the cavity 23, a guide bevel 1 is provided on the side of the guide block 1 26 facing the guide block 29, the guide bevel 1 is inclined from top to bottom in a direction away from the guide block 29, a guide bevel 2 is provided on the guide block 29 matching the guide bevel 1, the guide bevel 2 is parallel to the guide bevel 1 and the two are in contact with each other, a return spring 30 is sleeved on the connecting rod 28, one end of the return spring 30 is connected to the inner wall of the cavity 23, and the other end of the return spring 30 is connected to the guide block 29.

[0029] like Figure 1 , Figure 2 and Figure 5 As shown, a pressing plate bracket 31 is provided above the placing frame 3, the pressing plate bracket 31 is fixedly connected to the placing frame 3, a lifting rod 32 is provided on the pressing plate bracket 31, the lifting rod 32 and the pressing plate 34 are connected to each other by sliding up and down, a lifting plate 33 is fixed to the bottom end of the lifting rod 32, a pressing plate 34 is provided below the lifting plate 33, and the lifting plate 33 and the pressing plate 34 are connected by a plurality of buffer springs 35. The vibration motor 6 is fixed on the pressing plate bracket 31.

[0030] like Figure 1 , Figure 2 and Figure 5 As shown, the pressure plate bracket 31 and the placement frame 3 are fixedly connected by a plurality of fixing rods 36, the lifting plate 33 is provided with a lifting guide hole 37 matching the fixing rod 36, the fixing rod 36 is placed in the lifting guide hole 37, the lifting plate 33 and the fixing rod 36 are connected for up and down sliding, a plurality of downward pressing guide rods 38 are fixed on the pressure plate 34, the lifting plate 33 is provided with a guide rod through hole 39 matching the downward pressing guide rod 38, the downward pressing guide rod 38 is placed in the guide rod through hole 39 and connected for up and down sliding therewith.

[0031] After the brick mold 40 filled with mud is placed in the placement frame 3, the position of the brick mold 40 in the left-right direction can be fixed by pushing the side top plate 1 7 toward the brick mold 40 and pressing the brick mold 40 against the inner wall of the placement frame 3. The position of the brick mold 40 in the front-back direction can be fixed by pushing the side top plate 2 8 toward the brick mold 40 and pressing the brick mold 40 against the other inner wall of the placement frame 3. After the side top plate 1 7 and the side top plate 2 8 jointly press the brick mold 40 against the inner wall of the placement frame 3, the fastening nut 15 on the screw 13 of the side top plate 1 7 and the fastening nut 15 on the screw 13 of the side top plate 2 8 are rotated, and the fastening nut 15 is screwed on the inner wall of the placement frame 3 to complete the locking of the side top plate 1 7 and the side top plate 2 8.

[0032] After the side top plates 1 7 and 2 8 have fixed the brick mold 40 in the horizontal position, the lower top block 17 in the vertical opening 16 is pushed downward, so that the lower top plate 20 on the lower top block 17 supports the brick mold 40 from top to bottom, and then the knob on the rotating rod 25 is rotated. Under the cooperation of the rotating rod hole 24 and the thread of the rotating rod 25, the guide block 1 26 will be driven to move downward. At this time, through the cooperation design of the guide bevel 1 and the guide bevel 2, the guide block 29 and the connecting rod 28 and the vertical slider 19 thereon will be driven to move toward the bottom surface of the vertical slide groove 18, so that the locking teeth 22 on the vertical slider 19 are engaged and fixed with the card rack 21 on the bottom surface of the vertical slide groove 18, so as to realize the locking of the position of the vertical slider 19 and the lower top block 17, thereby completing the fixation of the position of the brick mold 40 in the vertical direction.

[0033] During the vibration molding process, every 25 seconds, the lifting rod 32 automatically drives the lifting plate 33 and the pressing plate 34 below it to move downward, pressing the mud in the brick mold 40 once, and immediately replenishing the mud into the brick mold 40 after pressing until the brick mold 40 is filled.

[0034] The bottom of the placement frame 3 is connected to the bottom of the fixed slot body 2 through the lower fixed spring 4, and the side of the placement frame 3 is connected to the side of the fixed slot body 2 through the side fixed spring 5. The connection design of the lower fixed spring 4 and the side fixed spring 5 avoids direct contact between the placement frame 3 and the fixed slot body 2, and can fully buffer and absorb the vibration energy generated by the placement frame 3, preventing the vibration generated by the placement frame 3 from being transmitted to the fixed slot body 2 and the rack panel 1, thereby greatly reducing the working noise of the vibration machine.

Claims

1. A manufacturing process for hollow ball refractory bricks, characterized in that: The following steps are involved: Step 1: 40-45 wt% of alumina hollow balls, 25-35 wt% of alumina powder, 10-15 wt% of a binder, and 10-15 wt% of zirconium oxide are put into a mixer and mixed evenly to form a mud material; Step 2, pouring mud into a brick mold and vibrating it through a vibrator to form a brick blank; Step 3, leaving the bricks at room temperature for 8 to 16 hours, and then placing them in a dryer to dry them at 80 to 150° C. for 16 to 30 hours; Step 4: Place the heated bricks into a tunnel kiln and fire them at 1600-1800°C for 5-7 hours to form hollow spherical refractory bricks.

2. The manufacturing process of hollow spherical refractory bricks according to claim 1, characterized in that During the vibration molding process, the clay in the brick mold (40) is pressed once every 20 to 30 seconds using the pressing plate (34), and clay is immediately added to the brick mold (40) after pressing until the brick mold (40) is filled.

3. The manufacturing process of a hollow ball refractory brick according to claim 1 is characterized in that: During drying, the dryer operates at a temperature of 120-150°C in the first 1 / 3 of the drying time and at a temperature of 80-120°C in the last 2 / 3 of the drying time.

4. A process for manufacturing hollow spherical refractory bricks according to any one of claims 1 to 3, characterized in that: The vibration machine comprises a frame panel (1), a fixed trough body (2) is fixed on the frame panel (1), a placement frame (3) is provided inside the fixed trough body (2), an inner bottom surface of the fixed trough body (2) and an outer bottom surface of the placement frame (3) are connected via a plurality of lower fixed springs (4), an outer side wall of each side of the placement frame (3) and an inner side wall of the fixed trough body (2) are connected via a plurality of side fixed springs (5), and a vibration motor (6) is fixed on the placement frame (3).

5. The manufacturing process of a hollow sphere refractory brick according to claim 4 is characterized in that: The placement frame (3) is provided with a side top plate (7) and a side top plate (8) inside. A side sliding bar (9) is fixed on the side top plate (7). A sliding bar through hole (10) matching the side sliding bar (9) is provided on the side wall of the placement frame (3). The side top plate (7) is mounted on the side wall of the placement frame (3) and is slidably connected to the side wall by the cooperation between the side sliding bar (9) and the sliding bar through hole (10). A side sliding bar (11) is fixed on the side top plate (8). A sliding bar through hole (12) matching the side sliding bar (11) is provided on the other side wall of the placement frame (3). The side top plate (8) is mounted on the other side wall of the placement frame (3) and is slidably connected to the side wall by the cooperation between the side sliding bar (11) and the sliding bar through hole (12). The placement frame (3) is also provided with a locking mechanism (1) connected to the side top plate (7) and the side top plate (8).

6. The manufacturing process of a hollow sphere refractory brick according to claim 5, characterized in that: The side top plate 1 (7) and the side top plate 2 (8) are both fixed with a screw rod (13); a screw rod through hole (14) matching the screw rod (13) is provided on the side wall of the placement frame (3); the screw rod (13) is placed in the screw rod through hole (14) and the two are movably connected; the locking mechanism 1 comprises a fastening nut (15) sleeved on the screw rod (13); the fastening nut (15) and the screw rod (13) are threadedly connected; the fastening nut (15) is placed inside the placement frame (3); and the width of the fastening nut (15) is greater than the width of the screw rod through hole (14).

7. The manufacturing process of a hollow sphere refractory brick according to claim 5, characterized in that: The top of the side top plate 1 (7) and the top of the side top plate 2 (8) are both provided with a vertical opening (16), a lower top block (17) is provided in the vertical opening (16), a vertical slide groove (18) is provided on the side wall of the vertical opening (16), a vertical slider (19) matching the vertical slide groove (18) is provided on the side of the lower top block (17), and the lower top block (17) is connected to the vertical opening through the cooperation of the vertical slider (19) and the vertical slide groove (18). (16) is slidably connected up and down, the lower top block (17) is provided with a lower top plate (20), the lower top plate (20) is fixed to the side of the lower top block (17) away from the fastening nut (15), a toothed bar (21) is fixed on the bottom surface of the vertical slide groove (18), and a locking tooth (22) matching the toothed bar (21) is provided on the vertical slide block (19), and a locking mechanism 2 connected to the vertical slide block (19) is also installed on the lower top block (17).

8. The manufacturing process of a hollow sphere refractory brick according to claim 7, characterized in that: The lower top block (17) has a cavity (23) inside, a rotating rod hole (24) is provided on the top surface of the cavity (23), the locking mechanism 2 comprises a rotating rod (25) matching the rotating rod hole (24), the inner wall of the rotating rod hole (24) is threadedly connected to the outer wall of the rotating rod (25), the top end of the rotating rod (25) is placed outside the lower top block (17) and a knob is fixed thereon, the bottom end of the rotating rod (25) is placed in the cavity (23) and a guide block 1 (26) is mounted thereon, the guide block 1 (26) and the rotating rod (25) are rotatably connected, the guide block 1 (26) and the cavity (23) are slidably connected up and down, a connecting rod hole (27) is provided on the side wall of the cavity (23), a connecting rod (28) is slidably connected in the connecting rod hole (27), one end of the connecting rod (28) The connecting rod (28) is arranged outside the lower top block (17) and fixedly connected to the slider. The other end of the connecting rod (28) is arranged inside the cavity (23) and a second guide block (29) is fixed thereon. The second guide block (29) is slidably connected to the cavity (23). A first guide slope is provided on the side of the first guide block (26) facing the second guide block (29). The first guide slope is inclined from top to bottom in a direction away from the second guide block (29). A second guide slope matching the first guide slope is provided on the second guide block (29). The second guide slope is parallel to the first guide slope and contacts each other. A return spring (30) is sleeved on the connecting rod (28). One end of the return spring (30) is connected to the inner wall of the cavity (23), and the other end of the return spring (30) is connected to the second guide block (29).

9. The manufacturing process of a hollow sphere refractory brick according to claim 4, characterized in that: A pressure plate bracket (31) is provided above the placement frame (3), the pressure plate bracket (31) and the placement frame (3) are fixedly connected, a lifting rod (32) is provided on the pressure plate bracket (31), the lifting rod (32) and the pressure plate (34) are connected to each other in an up-and-down sliding manner, a lifting plate (33) is fixed to the bottom end of the lifting rod (32), a pressure plate (34) is provided below the lifting plate (33), and the lifting plate (33) and the pressure plate (34) are connected via a plurality of buffer springs (35).

10. The manufacturing process of hollow spherical refractory bricks according to claim 9, characterized in that: The pressing plate bracket (31) and the placing frame (3) are fixedly connected via a plurality of fixing rods (36); the lifting plate (33) is provided with a lifting guide hole (37) matching the fixing rod (36); the fixing rod (36) is placed in the lifting guide hole (37); the lifting plate (33) and the fixing rod (36) are connected in an up-and-down sliding manner; a plurality of downward pressing guide rods (38) are fixed on the pressing plate (34); the lifting plate (33) is provided with a guide rod through hole (39) matching the downward pressing guide rod (38); the downward pressing guide rod (38) is placed in the guide rod through hole (39) and is connected in an up-and-down sliding manner therewith.

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