Composite zirconium mullite brick and preparation process thereof

Abstract

The invention discloses a composite zirconium mullite brick and a preparation process thereof. The mullite-tabular corundum refractory material is prepared from the following formula raw materials: 35-45% of mullite, 25-35% of tabular corundum, 6-10% of zirconium powder and 15-20% of composite powder. The composite zirconium mullite brick has the beneficial effects that the composite zirconium mullite brick prepared from the raw materials according to the proportion has high thermal shock resistance and can well resist water vapor erosion of a kiln opening, and the service life is greatly prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field related to the preparation of composite zirconium-mullite bricks, in particular to a composite zirconium-mullite brick and a preparation process thereof. Background Art

[0002] Zirconium-mullite bricks are commonly used as kiln-mouth bricks in lime kilns. They can withstand the high temperatures and pressures within the kiln, ensuring safe and reliable operation. Zirconium-mullite bricks can generally withstand temperatures exceeding 1300°C, making them ideal for kiln-mouth bricks, maintaining stable structure and performance.

[0003] Although existing zirconium mullite bricks can be used under the conventional process conditions of lime kilns, they are still insufficient for certain special process requirements. For example, when the lime kiln needs to drop the temperature from over 1400°C to several hundred degrees Celsius and then quickly return to normal in order to meet process requirements, microcracks will gradually appear inside the zirconium mullite bricks. As the use time increases, these microcracks may expand and connect, resulting in a decrease in the structural strength of the bricks, peeling, falling blocks, etc., affecting their service life. In addition, in actual applications, if the operating temperature of the kiln is not stably controlled and often fluctuates greatly, it will also have an adverse effect on the thermal shock resistance of the zirconium mullite bricks and accelerate the damage of the bricks. For example, when the water vapor content in the lime kiln is high or water often enters the kiln during the production process, it will promote the dissolution and diffusion of impurities in the zirconium mullite bricks, causing the bricks to be eroded and thinned, making them loose, reducing the density of the bricks, and even forming holes.

[0004] In summary, there is a need for a composite zirconium mullite brick with high thermal shock resistance and high water vapor erosion resistance and a preparation process thereof. Summary of the Invention

[0005] The present invention aims to overcome the above-mentioned deficiencies of the prior art and provides a composite zirconium mullite brick with high thermal shock resistance and high water vapor erosion resistance and a preparation process thereof.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A composite zirconium-mullite brick comprises the following raw materials by weight: 35% to 45% mullite, 25% to 35% plate-shaped corundum, 6% to 10% zirconium powder, and 15% to 20% composite powder.

[0007] The composite zirconium mullite bricks made from the raw materials with the above ratio not only have high thermal shock resistance, but also can well resist the erosion of water vapor at the kiln mouth, greatly improving the service life.

[0008] The present invention also provides a preparation process of a composite zirconium mullite brick, comprising the following steps: Step 1: crush the bulk raw material into particles using a crusher, and then grind the crushed particles into powder using a grinder; Step 2: Add the powdered raw materials into a mixing device according to the proportion and mix them, and add 4% to 9% water during the mixing process to mix them into a paste; Step 3: Use a moisture content detection instrument to automatically detect the moisture content of the mud. If the actual moisture content of the mud exceeds the allowable error of the standard value, water or material is automatically added according to the difference between the standard value and the actual value and stirring is continued; Step 4: Put the prepared clay into a mold and press the mixed clay into a brick shape by applying pressure through a press; Step 5: Place the formed bricks into a drying kiln for drying to remove moisture; Step six: Place the dried bricks into a kiln for sintering to form finished composite zirconium mullite bricks.

[0009] The present invention can automatically detect the moisture content of the mud material during the preparation of the composite zircon-mullite brick. If the moisture content of the mud material does not meet the standard, water or material can be automatically added according to the situation to ensure that the moisture content of the produced mud material reaches the standard state, thereby greatly improving the product quality of the composite zircon-mullite brick after molding.

[0010] As a preferred, the stirring device comprises a tank body, a feeding box and a water feeding box are fixed on the tank body, the feeding box and the water feeding box are respectively provided with a feeding opening and a water feeding opening, the feeding opening and the water feeding opening are arranged on the side wall of the tank body and communicate with the inside of the tank body, a switch baffle is further arranged on the side wall of the tank body, the switch baffle is rotatably connected with the tank body, the positions of the feeding opening and the water feeding opening correspond to the position of the switch baffle, one of the feeding opening and the water feeding opening is opened or the feeding opening and the water feeding opening are simultaneously closed by rotating the switch baffle, the tank body is provided with a baffle driving device, the baffle driving device is connected with the switch baffle, the water content detection instrument comprises a water content detection box arranged in the inside of the tank body, the water content detection box is provided with a detection head, the water content detection box is electrically connected with the baffle driving device. The baffle driving device comprises a baffle driving motor, the switch baffle is fixed on the motor shaft of the baffle driving motor, the switch baffle is in the shape of a sector, the motor shaft is arranged at the center position of the switch baffle, the switch baffle can cover the feeding opening and the water feeding opening at the same time, so that the feeding opening and the water feeding opening are simultaneously closed. When the detection head of the water content detection box detects that the water content of the mud material is too much (or too little), a working signal is sent to the baffle driving device, the switch baffle is driven to rotate by the baffle driving device, the feeding opening (or the water feeding opening) is opened to automatically supplement, so that the water content of the mud material reaches the standard state, and the product quality of the formed composite zircon mullite brick is greatly improved.

[0011] As a preferred, the water content detection box is provided with a circuit board, the detection head comprises a positive metal needle and a negative metal needle, the positive metal needle and the negative metal needle are electrically connected with the circuit board, the circuit board is provided with a power supply and a single-chip microcomputer, when the positive metal needle and the negative metal needle are inserted into the mud material, the mud material, the power supply and the single-chip microcomputer form a closed loop, and the single-chip microcomputer is electrically connected with the baffle driving device. The standard current value corresponding to the standard water content of the mud material is A, the actual current value corresponding to the actual water content of the mud material is B, and the current error value corresponding to the allowable error of the standard water content of the mud material is α. When B is between A-α and A+α, it indicates that the actual water content of the mud material does not exceed the allowable error of the standard value, and the single-chip microcomputer sends a working signal to the baffle driving device at this time; when B is less than A-α, it indicates that the actual water content of the mud material is too little, and the single-chip microcomputer automatically sends a timing working signal to the baffle driving device according to the difference between A and B, the switch baffle is driven to rotate by the baffle driving device, and the water feeding opening is opened to automatically supplement; when B is greater than A+α, it indicates that the actual water content of the mud material is too much, and the single-chip microcomputer automatically sends a timing working signal to the baffle driving device according to the difference between B and A, the switch baffle is driven to rotate by the baffle driving device, and the feeding opening is opened to automatically supplement. The above-mentioned electric control action can be realized by existing computer programming combined with existing single-chip microcomputers, and details are not described herein.

[0012] Preferably, a vertical chute is provided on the inner wall of the tank body, and a slider is fixed to the moisture detection box. The slider is installed in the vertical chute and is slidably connected to it up and down. A transmission shaft bracket is fixed to the interior of the tank body, and a transverse transmission shaft is installed on the transmission shaft bracket. The transverse transmission shaft and the transmission shaft bracket are rotatably connected. A gear is fixed to the transverse transmission shaft. A vertical rack is fixed to the moisture detection box, and the vertical rack and the gear are meshed. A transmission shaft drive assembly connected to the transverse transmission shaft is provided inside the tank body. In a natural state, the moisture detection box is located above the mud material. During testing, the transmission shaft drive assembly controls the rotation of the transmission shaft. Through the cooperation of the gear and rack, the moisture detection box is driven downward along the vertical chute, so that the positive and negative metal needles on the vertical chute are inserted into the mud material to perform moisture content testing. The structure is simple and the control is convenient. The coordinated design of the vertical chute and the slider not only facilitates the installation of the moisture detection box in the tank body, but also guides the movement of the moisture detection box.

[0013] Preferably, a vertical stirring shaft is provided inside the tank body, a plurality of active stirring rods are fixed on the side walls of the vertical stirring shaft, the bottom of the vertical stirring shaft is mounted on the inner bottom surface of the tank body and is rotatably connected thereto, a rotary block driving device is provided on the top of the tank body, an active rotary block is mounted on the rotary block driving device, a rotary shaft groove is provided at the bottom of the active rotary block, the top of the vertical stirring shaft is placed in the rotary shaft groove, a transmission sleeve is further provided inside the tank body, the transmission sleeve is rotatably connected to the tank body, the active rotary block is located on the inner side of the transmission sleeve, and the outer side of the transmission sleeve is sleeved and fixed with Bevel gear 1, the transmission shaft drive assembly includes bevel gear 2, which is sleeved and fixed on the horizontal transmission shaft, and bevel gear 1 and bevel gear 2 are meshed. A latch hole is provided on the side wall of the shaft groove, and a limit latch is installed in the latch hole. The limit latch and the latch hole are movably connected. A latch slot 1 that matches one end of the limit latch is provided on the side wall of the vertical stirring shaft, and a latch slot 2 that matches the other end of the limit latch is provided on the inner wall of the transmission sleeve. A latch drive assembly corresponding to the limit latch is also installed on the active rotary block. The rotary block drive device includes a rotary block drive motor. The top of the active rotary block is fixed to the motor shaft of the rotary block drive motor, and the active rotary block is driven to rotate by the rotary block drive motor. In its natural state, one end of the limit pin is inserted into the first pin slot, and the other end of the limit pin is separated from the second pin slot. During mixing, the active rotating block drives the vertical stirring shaft and the active stirring rod thereon to rotate, thereby stirring the mud material in the tank body. After mixing is completed, the pin drive assembly controls the limit pin to move toward the second pin slot, so that one end of the limit pin is separated from the first pin slot, and the other end of the limit pin is inserted into the second pin slot. At this time, the active rotating block drives the transmission sleeve and the bevel gear thereon to rotate. Through the cooperation of the bevel gears 1 and 2, the transverse transmission shaft is driven to rotate. The structure is simple and the control is convenient. By separating the water content detection from the mixing and stirring, on the one hand, it can prevent the mud material splashed during the mixing process from entering the water content detection box and affecting the normal operation of the water content detection box, thereby protecting the water content detection box. On the other hand, the water content detection box detects whether the cement is fully mixed, thereby improving the accuracy of the detection data.

[0014] As preferred, a side sliding groove is arranged on the side wall of the plug hole, an iron block matched with the side sliding groove is fixed on the side wall of the limiting plug, the iron block is arranged in the side sliding groove and is in sliding connection with the side sliding groove, the plug driving assembly comprises an electromagnet ring fixed on the driving block, the iron block is located outside the electromagnet ring, a reset spring one is further arranged in the side sliding groove, one end of the reset spring one is connected with the end wall of the side sliding groove, and the other end of the reset spring one is connected with the iron block, and an automatic reset structure of the water content detection box is arranged on the vertical sliding groove. During detection, the electromagnet ring generates a magnetic field after being electrified, the iron block moves outward (the reset spring one is deformed) under the action of the magnetic force, thereby driving the limiting plug to move toward the plug slot two, one end of the limiting plug is separated from the plug slot one, and the other end of the limiting plug is inserted into the plug slot two, at this moment, the driving block drives the transmission sleeve and the bevel gear one thereon to rotate, the bevel gear one and the bevel gear two are matched, thereby driving the horizontal transmission shaft to rotate, and the structure is simple and the control is convenient. After the detection is completed, the electromagnet ring is de-energized, the magnetic field disappears, the iron block is automatically reset under the elastic force of the reset spring one, the other end of the limiting plug is separated from the plug slot two, one end of the limiting plug is re-inserted into the plug slot one, at this moment, the driving block drives the vertical stirring shaft and the driving stirring rod thereon to rotate, the mud after being added with materials or water can be stirred uniformly, and the water content detection box is controlled by the automatic reset structure of the water content detection box to move to the top of the mud again.

[0015] As preferred, the automatic reset structure of the water content detection box comprises a reset spring two arranged in the vertical sliding groove, one end of the reset spring two is connected with the end wall of the vertical sliding groove, and the other end of the reset spring two is connected with the sliding block. When the water content detection box moves downward along the vertical sliding groove, the reset spring two is deformed under force; after the other end of the limiting plug is separated from the plug slot two, the water content detection box is automatically reset and rises under the elastic force of the reset spring two, the structure is simple and the control is convenient.

[0016] Preferably, the active stirring rods are distributed in an annular shape on the side wall of the vertical stirring shaft, a transverse fixed shaft is fixed on the inner side wall of the tank body, a rotating sleeve 1 is sleeved on the transverse fixed shaft, the rotating sleeve 1 is rotatably connected to the transverse fixed shaft, a plurality of driven stirring rods 1 are fixed on the rotating sleeve 1, the driven stirring rods 1 are distributed in an annular shape on the outer side wall of the rotating sleeve 1, the driven stirring rods 1 and the active stirring rods 1 correspond one to one and are staggered with each other. By staggering the driven stirring rods 1 and the active stirring rods, the active stirring rod on the vertical stirring shaft will automatically push the driven stirring rod 1 on the rotating sleeve 1 to move during the rotation and stirring process, thereby driving the rotating sleeve 1 to rotate on the transverse fixed shaft, so that the driven stirring rod 1 assists in the rotation and stirring of the mud material in a plane different from the active stirring rod, thereby improving the stirring and mixing efficiency and improving the product quality of the composite zirconium mullite brick after molding.

[0017] Preferably, a rotary sleeve 2 is also sleeved on the vertical stirring shaft, and the rotary sleeve 2 is rotatably connected to the vertical stirring shaft. A plurality of driven stirring rods 2 are fixed on the rotary sleeve 2, and the driven stirring rods 2 are annularly distributed on the outer wall of the rotary sleeve 2. The driven stirring rods 2 correspond to the driven stirring rods one to one and are staggered with each other. The horizontal fixed shaft is located between the active stirring rod and the driven stirring rod 2. By staggering the driven stirring rods 2 and the driven stirring rod 1, the driven stirring rod 1 on the rotary sleeve 1 automatically pushes the driven stirring rod 2 on the rotary sleeve 2 to move during the rotation and stirring process, thereby driving the rotary sleeve 2 to rotate on the vertical stirring shaft, and the driven stirring rod 2 on the rotary sleeve 2 rotates in the opposite direction relative to the active stirring rod on the vertical stirring shaft, further improving the stirring and mixing efficiency and improving the product quality of the composite zirconium mullite brick after molding.

[0018] The beneficial effects of the present invention are: high thermal shock resistance; ability to effectively resist water vapor erosion at the kiln mouth; increased service life; improved product quality after the composite zirconium mullite brick is formed; simple structure and convenient control; improved accuracy of detection data; and improved stirring and mixing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the raw material content table of composite zirconium mullite bricks; Figure 2 It is a three-dimensional diagram of the mixing equipment; Figure 3 It is the left side view of the mixing equipment; Figure 4 yes Figure 3 Cross-sectional view at AA in the middle; Figure 5 yes Figure 4 Enlarged view of point B in the middle; Figure 6 yes Figure 4 Enlarged view of point C in the middle; Figure 7 This is the main view of the mixing equipment; Figure 8 yes Figure 7 Cross-sectional view at DD in the middle.

[0020] Figure: 1. Tank, 2. Feed box, 3. Water box, 4. Feed port, 5. Water port, 6. Switch block, 7. Moisture content detection box, 8. Positive metal needle, 9. Negative metal needle, 10. Vertical slide, 11. Slider, 12. Drive shaft bracket, 13. Horizontal drive shaft, 14. Gear, 15. Vertical rack, 16. Vertical stirring shaft, 17. Active stirring rod, 18. Active rotating block, 19. Rotating shaft slot, 20. Transmission sleeve, 21. Bevel gear 1, 22. Bevel gear 2, 23. Latch hole, 24. Limiting latch, 25. Latch slot 1, 26. Latch slot 2, 27. Side slide, 28. Iron block, 29. Electromagnet ring, 30. Return spring 1, 31. Return spring 2, 32. Horizontal fixed shaft, 33. Rotating sleeve 1, 34. Driven stirring rod 1, 35. Rotating sleeve 2, 36. Driven stirring rod 2. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1 In the embodiment, a composite zirconium mullite brick comprises the following raw materials by weight: 40% mullite, 30% plate-shaped corundum, 8% zirconium powder, and 16% composite powder (such as silicon dioxide).

[0023] The present invention also provides a preparation process of a composite zirconium mullite brick, comprising the following steps: Step 1: crush the bulk raw material into particles using a crusher, and then grind the crushed particles into powder using a grinder; Step 2: Add the powdered raw materials into a mixing device according to the proportion and mix them, and add 6% water during the mixing process to mix them into a paste; Step 3: Use a moisture content detection instrument to automatically detect the moisture content of the mud. If the actual moisture content of the mud exceeds the allowable error of the standard value, water or material is automatically added according to the difference between the standard value and the actual value and stirring is continued; Step 4: Put the prepared clay into a mold and press the mixed clay into a brick shape by applying pressure through a press; Step 5: Place the formed bricks into a drying kiln for drying to remove moisture; Step six, the dried brick blank is put into the kiln for sintering to form the composite zircon mullite brick product.

[0024] This product is used for the kiln mouth brick of imported lime kiln in Japan. It has high thermal shock resistance and can resist water vapor erosion of the kiln mouth. It replaces the imported brick in Japan and has better effect than the imported brick in Japan.

[0025] As shown in Figure 2 , Figure 7 and Figure 8 , the stirring device comprises a tank body 1, a material supplementing box 2 and a water supplementing box 3 are fixed on the tank body 1, the tank body 1, the material supplementing box 2 and the water supplementing box 3 are all provided with an inlet, a discharge outlet is installed at the bottom of the tank body 1, a discharge valve is installed at the discharge outlet, the material supplementing box 2 and the water supplementing box 3 are respectively provided with a material supplementing opening 4 and a water supplementing opening 5, the material supplementing opening 4 and the water supplementing opening 5 are both arranged on the side wall of the tank body 1 and are communicated with the inside of the tank body 1, a switch baffle 6 is further installed on the side wall of the tank body 1, the switch baffle 6 is rotationally connected with the tank body 1, the positions of the material supplementing opening 4 and the water supplementing opening 5 both correspond to the position of the switch baffle 6, one of the material supplementing opening 4 and the water supplementing opening 5 is opened or the material supplementing opening 4 and the water supplementing opening 5 are simultaneously closed through the rotation of the switch baffle 6, a baffle driving device is arranged on the tank body 1 and is connected with the switch baffle 6, as shown in Figure 3 and Figure 4 , a water content detecting instrument comprises a water content detecting box 7 installed in the inside of the tank body 1, the water content detecting box 7 is provided with a detecting head, the water content detecting box 7 is electrically connected with the baffle driving device.

[0026] As shown in Figure 3 and Figure 4 , a circuit board is arranged on the water content detecting box 7, the detecting head comprises a positive metal needle 8 and a negative metal needle 9, the positive metal needle 8 and the negative metal needle 9 are both electrically connected with the circuit board, a power supply and a single-chip microcomputer are installed on the circuit board, when the positive metal needle 8 and the negative metal needle 9 are inserted into the mud, the mud, the power supply and the single-chip microcomputer form a closed loop, the single-chip microcomputer is electrically connected with the baffle driving device.

[0027] As shown in Figure 4 and Figure 6 , a vertical sliding groove 10 is arranged on the inner wall of the tank body 1, a sliding block 11 is fixed on the water content detecting box 7, the sliding block 11 is installed in the vertical sliding groove 10 and is slidably connected with it, a transmission shaft support 12 is fixed in the inside of the tank body 1, a horizontal transmission shaft 13 is installed on the transmission shaft support 12, the horizontal transmission shaft 13 is rotationally connected with the transmission shaft support 12, a gear 14 is fixedly sleeved on the horizontal transmission shaft 13, a vertical rack 15 is fixed on the water content detecting box 7, the vertical rack 15 is engaged with the gear 14, a transmission shaft driving assembly connected with the horizontal transmission shaft 13 is arranged in the inside of the tank body 1.

[0028] As Figure 4 、 Figure 5 and Figure 6 As shown, a vertical stirring shaft 16 is provided inside the tank body 1, and a plurality of active stirring rods 17 are fixed on the side wall of the vertical stirring shaft 16. The bottom of the vertical stirring shaft 16 is installed on the inner bottom surface of the tank body 1 and is rotatably connected thereto. A rotary block driving device is provided on the top of the tank body 1, and an active rotary block 18 is installed on the rotary block driving device. The bottom of the active rotary block 18 is provided with a rotating shaft groove 19, and the top of the vertical stirring shaft 16 is placed in the rotating shaft groove 19. A transmission sleeve 20 is further provided inside the tank body 1, and the transmission sleeve 20 is rotatably connected to the tank body 1. The active rotary block 18 is located on the inner side of the transmission sleeve 20, and a bevel gear 21 is fixed to the outer side of the transmission sleeve 20. The transmission shaft drive assembly includes a bevel gear 22, which is sleeved and fixed on the horizontal transmission shaft 13, and the bevel gear 1 21 and the bevel gear 2 2 are meshed with each other. A latch through hole 23 is provided on the side wall of the rotating shaft groove 19, and a limit latch 24 is installed in the latch through hole 23. The limit latch 24 and the latch through hole 23 are movably connected. A latch slot 1 25 matching one end of the limit latch 24 is provided on the side wall of the vertical stirring shaft 16, and a latch slot 26 matching the other end of the limit latch 24 is provided on the inner wall of the transmission sleeve 20. A latch drive assembly corresponding to the limit latch 24 is also installed on the active rotating block 18.

[0029] A side slide groove 27 is provided on the side wall of the latch through hole 23, and an iron block 28 matching the side slide groove 27 is fixed on the side wall of the limit latch 24. The iron block 28 is placed in the side slide groove 27 and is slidably connected thereto. The latch drive assembly includes an electromagnet ring 29 fixed on the active rotating block 18, and the iron block 28 is located on the outside of the electromagnet ring 29. A return spring 30 is also provided in the side slide groove 27, and one end of the return spring 30 is connected to the end wall of the side slide groove 27, and the other end of the return spring 30 is connected to the iron block 28. The vertical slide groove 10 is provided with an automatic reset structure for the moisture content detection box.

[0030] The automatic reset structure of the moisture content detection box includes a reset spring 31 arranged inside the vertical slide 10, one end of the reset spring 31 is connected to the end wall of the vertical slide 10, and the other end of the reset spring 31 is connected to the slider 11.

[0031] like Figure 3 and Figure 4 、 Figure 7 and Figure 8As shown, the active stirring rods 17 are distributed in a ring shape on the side wall of the vertical stirring shaft 16, and a horizontal fixed shaft 32 is fixed on the inner wall of the tank body 1. A rotating sleeve 33 is sleeved on the horizontal fixed shaft 32. The rotating sleeve 33 is rotatably connected to the horizontal fixed shaft 32, and a plurality of driven stirring rods 34 are fixed on the rotating sleeve 33. The driven stirring rods 34 are distributed in a ring shape on the outer wall of the rotating sleeve 33. The driven stirring rods 34 and the active stirring rods 17 correspond one to one and the two are staggered.

[0032] The vertical stirring shaft 16 is also sleeved with a rotating sleeve 2 35, which is rotatably connected to the vertical stirring shaft 16. A number of driven stirring rods 2 36 are fixed to the rotating sleeve 2 35. The driven stirring rods 2 36 are distributed in a ring shape on the outer wall of the rotating sleeve 2 35. The driven stirring rods 2 36 and the driven stirring rods 1 34 correspond one to one and are staggered with each other. The horizontal fixed shaft 32 is located between the active stirring rod 17 and the driven stirring rod 2 36.

[0033] Detection principle: Assume that the standard current value corresponding to the standard moisture content of the clay is A, the actual current value corresponding to the actual moisture content of the clay is B, and the current error value corresponding to the allowable error of the standard moisture content of the clay is α. When B is between A-α and A+α, it means that the actual moisture content of the clay does not exceed the allowable error of the standard value. At this time, the single-chip microcomputer sends a working signal to the baffle driving device; when B is less than A-α, it means that the actual moisture content of the clay is too little. At this time, the single-chip microcomputer automatically sends a timing working signal to the baffle driving device according to the difference between A and B, and drives the switch baffle 6 to rotate through the baffle driving device, opening the water supply port 5 for automatic quantitative replenishment; when B is greater than A+α, it means that the actual moisture content of the clay is too much. At this time, the single-chip microcomputer automatically sends a timing working signal to the baffle driving device according to the difference between B and A, and drives the switch baffle 6 to rotate through the baffle driving device, opening the water supply port 4 for automatic quantitative replenishment.

[0034] Stirring and testing process: In the natural state, one end of the limit pin 24 is inserted into the pin slot 1 25, and the other end of the limit pin 24 is separated from the pin slot 2 26. During stirring, the active rotating block 18 drives the vertical stirring shaft 16 and the active stirring rod 17 thereon to rotate, thereby stirring the mud material in the tank body 1. By designing the driven stirring rod 1 34 and the active stirring rod 17 to be staggered with each other, the active stirring rod 17 on the vertical stirring shaft 16 will automatically push the driven stirring rod 1 34 on the rotating sleeve 1 33 to move during the process of rotation and stirring, thereby driving the rotating sleeve 1 33 to rotate on the horizontal fixed shaft 32, so that the driven stirring rod 1 34 can assist in the rotation and stirring of the mud material in a plane different from that of the active stirring rod 17. By designing the driven stirring rod 2 36 and the driven stirring rod 1 34 in an interlaced manner, the driven stirring rod 1 34 on the rotating sleeve 1 33 will automatically push the driven stirring rod 2 36 on the rotating sleeve 2 35 to move during the rotation and stirring process, thereby driving the rotating sleeve 2 35 to rotate on the vertical stirring shaft 16, and the driven stirring rod 2 36 on the rotating sleeve 2 35 rotates in the opposite direction relative to the active stirring rod 17 on the vertical stirring shaft 16.

[0035] After the stirring is completed, the electromagnet ring 29 is energized to generate a magnetic field. Under the action of the magnetic force, the iron block 28 moves outward toward the electromagnet ring 29 (the return spring 1 30 is deformed), thereby driving the limit pin 24 to move toward the pin slot 26, so that one end of the limit pin 24 is separated from the pin slot 1 25, and the other end of the limit pin 24 is inserted into the pin slot 26. At this time, the active rotating block 18 drives the transmission sleeve 20 and the bevel gear 1 21 thereon to rotate, and through the cooperation of the bevel gear 1 21 and the bevel gear 2 22, the horizontal transmission shaft 13 is driven to rotate, and through the cooperation of the gear 14 and the vertical rack 15, the moisture content detection box 7 is driven to move downward along the vertical slide 10 (the return spring 2 is deformed), so that the positive metal needle 8 and the negative metal needle 9 on it are inserted into the mud material to perform moisture content detection.

[0036] After the detection is completed, the electromagnetic field of the electromagnet ring 29 disappears, and the iron block 28 automatically resets under the elastic force of the reset spring 30, so that the other end of the limit pin 24 is separated from the pin slot 26, and one end of the limit pin 24 is reinserted into the pin slot 1 25. At this time, the active rotating block 18 drives the vertical stirring shaft 16 and the active stirring rod 17 thereon to rotate again, so that the mud material after adding material or water can be stirred evenly, and the water content detection box 7 at this time automatically resets and rises under the elastic force of the reset spring 2 31, and moves back to the top of the mud material.

[0037] By designing the water content detection and mixing and stirring separately, on the one hand, it can prevent the mud splashed during the mixing process from entering the water content detection box 7 and affecting the normal operation of the water content detection box 7, thereby protecting the water content detection box 7. On the other hand, the water content detection box 7 detects the fully stirred cement, which improves the accuracy of the detection data.

[0038] The electronic control actions of this application can all be realized through existing computer programming combined with existing single-product machines, and will not be described in detail.

Claims

1. A composite zirconium mullite brick, characterized in that: Calculated by weight percentage, the raw materials include: 35% to 45% of mullite, 25% to 35% of plate-shaped corundum, 6% to 10% of zirconium powder, and 15% to 20% of composite powder.

2. A preparation process of composite zirconium mullite bricks, characterized in that: The following steps are involved: Step 1: crush the bulk raw material into particles using a crusher, and then grind the crushed particles into powder using a grinder; Step 2: Add the powdered raw materials into a mixing device according to the proportion and mix them, and add 4% to 9% water during the mixing process to mix them into a paste; Step 3: Use a moisture content detection instrument to automatically detect the moisture content of the mud. If the actual moisture content of the mud exceeds the allowable error of the standard value, water or material is automatically added according to the difference between the standard value and the actual value and stirring is continued; Step 4: Put the prepared clay into a mold and press the mixed clay into a brick shape by applying pressure through a press; Step 5: Place the formed bricks into a drying kiln for drying to remove moisture; Step six: Place the dried bricks into a kiln for sintering to form finished composite zirconium mullite bricks.

3. The preparation process of a composite zirconium mullite brick according to claim 2, characterized in that: The stirring device comprises a tank body (1), a feeding box (2) and a water feeding box (3) are fixed on the tank body (1), the feeding box (2) and the water feeding box (3) are respectively provided with a feeding port (4) and a water feeding port (5), the feeding port (4) and the water feeding port (5) are both placed on the side wall of the tank body (1) and are connected to the interior of the tank body (1), a switch baffle (6) is also installed on the side wall of the tank body (1), the switch baffle (6) and the tank body (1) are rotatably connected, and the position of the feeding port (4) and the position of the water feeding port (5) are respectively provided. The positions of the switch baffle (6) are both corresponding to each other, and the switch baffle (6) is rotated to open one of the feed port (4) and the water port (5) or to close both the feed port (4) and the water port (5) at the same time. The tank body (1) is provided with a baffle driving device, and the baffle driving device is connected to the switch baffle (6). The water content detection instrument comprises a water content detection box (7) installed inside the tank body (1), and the water content detection box (7) is provided with a detection head. The water content detection box (7) is electrically connected to the baffle driving device.

4. The preparation process of a composite zirconium mullite brick according to claim 3, characterized in that: The moisture content detection box (7) is provided with a circuit board, and the detection head comprises a positive metal needle (8) and a negative metal needle (9), both of which are electrically connected to the circuit board. A power supply and a single-chip microcomputer are installed on the circuit board. When the positive metal needle (8) and the negative metal needle (9) are inserted into the clay, the clay, the power supply and the single-chip microcomputer form a closed loop, and the single-chip microcomputer is electrically connected to the baffle driving device.

5. The preparation process of a composite zirconium mullite brick according to claim 3, characterized in that: A vertical slide groove (10) is provided on the inner wall of the tank body (1), a slider (11) is fixed on the water content detection box (7), the slider (11) is installed in the vertical slide groove (10) and is slidably connected thereto up and down, a transmission shaft bracket (12) is fixed inside the tank body (1), a transverse transmission shaft (13) is installed on the transmission shaft bracket (12), the transverse transmission shaft (13) and the transmission shaft bracket (12) are rotatably connected, a gear (14) is sleeved and fixed on the transverse transmission shaft (13), a vertical rack (15) is fixed on the water content detection box (7), the vertical rack (15) and the gear (14) are meshed, and a transmission shaft drive assembly connected to the transverse transmission shaft (13) is provided inside the tank body (1).

6. The preparation process of a composite zirconium mullite brick according to claim 5, characterized in that: A vertical stirring shaft (16) is provided inside the tank body (1), and a plurality of active stirring rods (17) are fixed on the side wall of the vertical stirring shaft (16). The bottom of the vertical stirring shaft (16) is mounted on the inner bottom surface of the tank body (1) and is rotatably connected thereto. A rotary block driving device is provided on the top of the tank body (1), and an active rotary block (18) is mounted on the rotary block driving device. The bottom of the active rotary block (18) is provided with a rotary shaft groove (19), and the top of the vertical stirring shaft (16) is placed in the rotary shaft groove (19). A transmission sleeve (20) is further provided inside the tank body (1), and the transmission sleeve (20) is rotatably connected to the tank body (1). The active rotary block (18) is located on the inner side of the transmission sleeve (20), and a bevel gear (21) is fixed to the outer side of the transmission sleeve (20). ), the transmission shaft driving assembly includes a bevel gear 2 (22), the bevel gear 2 (22) is sleeved and fixed on the transverse transmission shaft (13), the bevel gear 1 (21) and the bevel gear 2 (22) are meshed with each other, a latch hole (23) is provided on the side wall of the rotating shaft groove (19), a limit latch (24) is installed in the latch hole (23), the limit latch (24) and the latch hole (23) are movably connected, a latch groove 1 (25) is provided on the side wall of the vertical stirring shaft (16) and matches one end of the limit latch (24), a latch groove 2 (26) is provided on the inner wall of the transmission sleeve (20) and matches the other end of the limit latch (24), and a latch driving assembly corresponding to the limit latch (24) is also installed on the active rotating block (18).

7. The preparation process of a composite zirconium mullite brick according to claim 6, characterized in that: A side slide groove (27) is provided on the side wall of the latch through hole (23), an iron block (28) matching the side slide groove (27) is fixed on the side wall of the limit latch (24), the iron block (28) is placed in the side slide groove (27) and is slidably connected thereto, the latch drive assembly includes an electromagnet ring (29) fixed on the active rotating block (18), the iron block (28) is located on the outside of the electromagnet ring (29), a return spring (30) is further provided in the side slide groove (27), one end of the return spring (30) is connected to the end wall of the side slide groove (27), and the other end of the return spring (30) is connected to the iron block (28), and an automatic return structure of the water content detection box is provided on the vertical slide groove (10).

8. The process for preparing a composite zirconium mullite brick according to claim 7, wherein: The automatic reset structure of the water content detection box includes a second reset spring (31) arranged inside the vertical slide groove (10), one end of the second reset spring (31) is connected to the end wall of the vertical slide groove (10), and the other end of the second reset spring (31) is connected to the slider (11).

9. A process for preparing a composite zirconium mullite brick according to any one of claims 6 to 8, characterized in that: The active stirring rods (17) are distributed in an annular shape on the side wall of the vertical stirring shaft (16); a transverse fixed shaft (32) is fixed on the inner side wall of the tank body (1); a rotating sleeve (33) is sleeved on the transverse fixed shaft (32); the rotating sleeve (33) and the transverse fixed shaft (32) are rotatably connected; a plurality of driven stirring rods (34) are fixed on the rotating sleeve (33); the driven stirring rods (34) are distributed in an annular shape on the outer side wall of the rotating sleeve (33); the driven stirring rods (34) and the active stirring rods (17) correspond one to one and are staggered with each other.

10. The process for preparing a composite zirconium mullite brick according to claim 9, wherein: The vertical stirring shaft (16) is also sleeved with a second rotating sleeve (35), and the second rotating sleeve (35) and the vertical stirring shaft (16) are rotatably connected. The second rotating sleeve (35) is fixed with a plurality of second driven stirring rods (36), and the second driven stirring rods (36) are distributed in an annular shape on the outer wall of the second rotating sleeve (35). The second driven stirring rods (36) and the first driven stirring rods (34) correspond to each other one by one and are staggered with each other. The horizontal fixed shaft (32) is located between the active stirring rod (17) and the second driven stirring rod (36).

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