Moisture-retaining refractory mortar and method for producing the same

Abstract

The application discloses a kind of moisturizing refractory mortar and preparation method thereof, to provide a kind of in the mixing state of mixture to the inside water-adding moisturizing refractory mortar and preparation method thereof.It includes preparation cylinder, preparation cylinder is equipped with top disc and bottom disc, top disc and bottom disc are detachably connected with preparation cylinder, gap is left between the top end of top disc and preparation cylinder, top disc is equipped with through pipe, the top end of through pipe is placed outside preparation cylinder by passing through top disc, the bottom end of through pipe is detachably connected with bottom disc, a plurality of hard blocks are installed on through pipe, a plurality of hard blocks are symmetrically distributed with through pipe as center, a plurality of water pipes are installed on hard block, a plurality of water pipes are evenly distributed, a plurality of water outlets are arranged on water pipe.The beneficial effects of the application are: the purpose of adding water to the inside in the mixing state of mixture can be achieved;the adding channel of solid raw material and liquid raw material is installed;the stirring work of hard block can be smoothly controlled.

Description

Technical Field

[0001] This invention relates to the field of mud preparation technology, and in particular to a moisture-retaining refractory mud and its preparation method. Background Technology

[0002] Mud is a semi-fluid mixture of soil and water. It is a material needed for various aspects of life and work in modern times (especially after industrial development). Of course, the type of mud used for masonry or jointing work varies depending on the environment.

[0003] Refractory mortar is an amorphous refractory material commonly used for joints in refractory masonry. Due to its unique refractory properties, it can withstand high-temperature environments, making it popular among mortar users. However, the preparation of refractory mortar typically involves piling up dry mortar powder, directly adding binder and water, and then mixing them. This method introduces water that can evaporate easily (especially at high temperatures), affecting the mortar preparation process.

[0004] Chinese Patent Publication No. CN102617168A, published on August 1, 2012, discloses a wet refractory slurry, which is made of at least refractory base material, binder, and water, and also includes a resin-based preservative. The drawback of this technical solution is that the preparation method involves adding the raw materials for slurry preparation to a mixer and stirring evenly, then directly adding water to the mixture and stirring again. This method may result in water not being able to penetrate the mixed raw materials smoothly (the outer edges of soil-like or powdery materials may block water penetration), thus preventing the mixture from binding tightly through liquid water, which affects the slurry preparation process.

[0005] In summary, a structure can be designed to allow liquid water to seep into the mixture, thus facilitating the successful preparation of the mud. Summary of the Invention

[0006] This invention aims to overcome the shortcomings of existing technologies that involve directly pouring water into a clay-like mixture, and provides a method for preparing a moisture-retaining refractory slurry by adding water to the mixture while it is being stirred. To achieve the above objective, this invention employs the following technical solution: a moisture-retaining refractory slurry comprising the following raw materials: 65-125 parts clay powder, 2-4 parts bauxite powder, 3-5 parts mullite powder, 24-26 parts sodium phosphate, 25-27 parts potassium phosphate, 0.07-0.4 parts sodium lactate, 1-3 parts oxalic acid, 1-4 parts white clay, 2-3 parts kaolin, 1-3 parts carboxymethyl cellulose, and 14-16 parts liquid water. This design allows the use of clay powder, bauxite powder, and mullite to create a refractory base material. The various raw materials are mixed evenly under stirring conditions, and adding them to the slurry imparts refractory properties. A binder can be created by mixing sodium phosphate and potassium phosphate, which can then be easily added to the mud to ensure stable bonding of the various raw materials. Oxalic acid can be mixed into the sodium lactate solution, not only making the mixing more uniform during stirring but also providing a preservation effect when added to the mud. A plasticizer for the mud is successfully prepared by mixing white clay and kaolin. After the various raw materials are mixed and prepared, they can be smoothly combined in a stirring environment to exert their respective effects. Finally, liquid water containing carboxymethyl cellulose can be introduced through the preparation tube and, under the guidance of the pipe, seep into the raw materials being stirred. The addition of liquid raw materials during stirring (the preparation tube can guide the liquid raw materials into the solid raw materials of the mud) keeps the mud in a moist state, which also has a good moisture retention effect. As a preferred formulation, the following raw materials are included: 100 parts clay powder, 3 parts bauxite powder, 4 parts mullite powder, 25 parts sodium phosphate, 26 parts potassium phosphate, 0.2 parts sodium lactate, 2 parts oxalic acid, 2 parts white clay, 2 parts kaolin, 2 parts carboxymethyl cellulose, and 15 parts liquid water. This design allows for the preparation of a refractory base material using clay powder, bauxite powder, and mullite. The clay powder, a natural product of hydrated aluminosilicates, possesses strong plasticity, good binding properties, moderate thixotropy, suitable shrinkage, and high refractoriness. The bauxite powder is lightweight, heat-resistant, has good thermal stability, low thermal conductivity, low heat capacity, and good resistance to mechanical vibration. Mullite, as a refractory material, exhibits uniform expansion, good thermal shock stability, high softening point under load, high hardness, and good resistance to chemical corrosion. Sodium phosphate and potassium phosphate can be used as binders; both are readily soluble in water, facilitating mixing. Oxalic acid can be easily mixed into sodium lactate solution and has a strong synergistic effect. Sodium lactate is not only hygroscopic but also miscible in water. The mixing of white mud and kaolin is the preparation of plasticizer. Liquid water containing carboxymethyl cellulose can be smoothly introduced into the raw materials in the preparation cylinder through the flow and stirring of the pipe. This facilitates the preparation of mud and keeps the mud moist with good moisture retention.This invention also provides a method for preparing a moisture-retaining refractory slurry, using a moisture-retaining refractory slurry preparation device. The device includes a preparation cylinder, on which a top plate and a bottom plate are mounted. The top plate is positioned at the top of the preparation cylinder, and the bottom plate is positioned at the bottom. Both the top and bottom plates are detachably connected to the preparation cylinder, with a gap between the top plate and the top of the preparation cylinder. A through-pipe is installed on the top plate, with its top end passing through the top plate and extending outside the preparation cylinder. The bottom end of the through-pipe is detachably connected to the bottom plate. Several hard blocks are installed on the through-pipe, symmetrically distributed around the through-pipe. Several water pipes are installed on the hard blocks, evenly distributed, and each water pipe has several outlets. The method specifically includes the following steps:

[0007] Step 1: Mix the clay powder, bauxite powder and mullite powder, then pour the mixture into the preparation cylinder through the gap between the top of the preparation cylinder and the top plate. Control the flow tube to stir and mix the clay powder, bauxite powder and mullite powder evenly.

[0008] Step 2: Mix sodium phosphate and potassium phosphate and pour the mixture into the preparation cylinder through the gap between the top of the cylinder and the top plate. Stir the mixture by controlling the flow pipe to ensure that the sodium phosphate and potassium phosphate are mixed evenly and that the mixture is incorporated into the mixed clay powder, bauxite powder and mullite powder.

[0009] Step 3: Mix oxalic acid into the sodium lactate solution and pour it in through the top of the tube, allowing the rotating tube to mix the solution into the powder mixture and ensure full contact.

[0010] Step 4: After mixing the white clay and kaolin, pour the mixture into the preparation cylinder through the gap between the top of the preparation cylinder and the top plate. Under the stirring state of the tube, let the white clay and kaolin be mixed into the powder already prepared.

[0011] Step 5: Clean the gaps and the top of the tube. Dissolve carboxymethyl cellulose in liquid water. Based on the amount of raw materials in the preparation cylinder and the stirring time, pour the prepared amount of liquid water and carboxymethyl cellulose solution through the top of the tube. The rotating tube will then spray the solution into the raw materials through the outlet. This will successfully complete the preparation of the moisturizing refractory slurry.

[0012] The properties of the prepared moisture-retaining refractory mortar allow for adjustment of the proportions of raw materials required for the mortar. When better refractory performance is desired, a higher content of clay powder, bauxite powder, and mullite powder is needed. Based on the added content of clay powder, bauxite powder, and mullite powder, the appropriate amount of sodium phosphate and potassium phosphate mixture is prepared, along with a suitable sodium lactate solution incorporating oxalic acid, and a mixture of white clay and kaolin. This allows for uniform mixing of the raw materials under stirring conditions via a pipe. Finally, liquid water dissolved in carboxymethyl cellulose is introduced into the solid mixture under stirring and guidance via a pipe. The pipe allows for the smooth incorporation of liquid water into the solid materials, ensuring the smooth preparation of the moisture-retaining refractory mortar and achieving the goal of adding water internally while the mixture is being stirred.

[0013] Preferably, the top of the preparation cylinder is provided with a second movable groove, and the top plate is provided with a first movable groove. The positions of the first movable groove and the second movable groove correspond to each other. Several support blocks are installed in the first movable groove, and the support blocks are symmetrically distributed around the connecting pipe. One end of each support block is placed in the first movable groove and connected to the top plate, while the other end of the support block is placed in the second movable groove. This design, by providing a second movable groove at the top of the preparation cylinder and a first movable groove on the top plate, and ensuring that the positions of the first and second movable grooves correspond, allows the other end of the support block, with one end in the first movable groove, to be placed in the second movable groove. In other words, the support block is positioned within the constraints of the preparation cylinder and the top plate. The support blocks here consist of several symmetrically distributed around the central tube, with one end of each block connected to the top plate. This design not only ensures the top plate remains in a supported and limited position at the top of the preparation cylinder, but also allows the top plate to rotate the central tube, thus agitating the slurry materials within the cylinder and facilitating the preparation of the moisture-retaining refractory slurry. The central tube serves as the channel for the liquid raw materials to enter the preparation cylinder. Preferably, a control shaft is mounted on the support block, with its bottom end connected to the support block and a gap between its top end and the top plate. This design, with the control shaft connected to the support block and a gap between its top end and the top plate, allows external control devices, such as a motor, to connect to the control shaft. The motor's operation, via its shaft, causes the control shaft to rotate, which in turn rotates the top plate connected to the support block, causing the central tube on the top plate to rotate and agitating the raw materials within the preparation cylinder. Preferably, a rolling bearing is mounted on the chassis, and a connecting block is mounted on the bottom end of the through pipe. The connecting block is a solid body, and the through pipe is connected to the connecting block. The rolling bearing includes an inner ring and an outer ring. The connecting block is connected to the inner ring, and the outer ring is connected to the chassis. This design, by mounting the rolling bearing on the chassis and connecting the connecting block at the bottom end of the through pipe to the inner ring of the rolling bearing, while the outer ring of the rolling bearing is connected to the chassis, allows the through pipe to rotate stably under the support of the chassis, providing excellent stirring for the raw materials in the preparation cylinder. Since the connecting block is a solid body, liquid raw materials introduced into the through pipe will not remain inside the connecting block. Preferably, a guide block is mounted on the chassis, connected to the connecting block, and positioned above the rolling bearing, with the lower end of the rolling bearing located inside the chassis. This design, by installing guide blocks on the chassis and connecting them to the connecting blocks, with the guide blocks positioned above the rolling bearing and the lower end of the rolling bearing inside the chassis, reduces the likelihood of the mud preparation material from the preparation cylinder being mixed into the rolling bearing and affecting its working performance.Preferably, the preparation cylinder has several outlets, the center end of the guide block is fitted onto the connecting block, the outer edge of the guide block is placed on the inner wall of the preparation cylinder, the distance between the outer edge of the guide block and the base is less than the distance between the center end of the guide block and the base, a height difference is left between the outlet and the outer edge of the guide block, a plug is installed at the outlet, the rear end of the plug matches the outlet, and a distance is left between the front end of the plug and the outer wall of the preparation cylinder. This design, by setting an outlet on the preparation cylinder, allows the center end of the guide block to fit onto the connecting block, while the outer edge of the guide block rests on the inner wall of the preparation cylinder. The distance between the outer edge of the guide block and the base is less than the distance between the center end of the guide block and the base, and a height difference exists between the outlet and the outer edge of the guide block. This allows the slurry prepared inside the preparation cylinder to flow to the outlet under the guidance of the guide block. A plug is installed at the outlet, with its rear end matching the outlet. A distance is maintained between the front end of the plug and the outer wall of the preparation cylinder, allowing the outlet to be opened smoothly by controlling the front end of the plug, thus facilitating slurry collection. Preferably, the front end of the hard block is connected to a connecting pipe, the inner wall of the preparation cylinder has a rotating groove, a rotating block is installed at the rear end of the hard block, and the rotating block is placed in the rotating groove. One end of the water pipe is connected to the connecting pipe, and the other end of the water pipe is located at the connection between the hard block and the rotating block. This design connects the front end of the hard block to the through-pipe, while the rotating block installed at the rear end of the hard block is placed in a rotating groove on the inner wall of the preparation cylinder. This allows the rotation of the through-pipe to drive the hard block to rotate, and the hard block rotates under the limiting effect of the preparation cylinder. Here, one end of the water pipe is connected to the through-pipe, and the other end of the water pipe is placed at the connection between the hard block and the rotating block. Thus, the liquid raw material in the through-pipe can only flow out through the water pipe to penetrate into the solid raw material. Preferably, a stop block is installed on the water pipe, the stop block has several fine holes, several compression springs are installed on the stop block, and a block is installed on each compression spring. A space is left between the stop block and the block, the compression springs are evenly distributed in the space, and the block is connected to the stop block through the compression springs. One end of each fine hole is connected to the water pipe, and the other end of each fine hole is connected to the space. Several limiting blocks are installed on the hard block, several of which are symmetrically distributed around the water outlet. Several limiting grooves are provided on each limiting block, several of which are symmetrically distributed around the center of the block. The front end of each limiting groove is placed at the connection between the limiting block and the hard block, and a baffle is installed at the rear end of each limiting groove. The block matches the limiting groove.This design involves installing a baffle on the water pipe, with several small holes on the baffle connected at one end to the water pipe and at the other end placed in the space between the baffle and the block. Liquid material in the water pipe can then flow into this space. Several compression springs are installed on the baffle, and the block is mounted on each spring, connected to the baffle via the springs. The impact of the liquid material causes the block to move, increasing the distance between it and the baffle, thus expanding the space. A limit block is installed on the rigid block at the outlet, and it has several limiting grooves symmetrically distributed around the center of the block. The front end of each groove is at the connection between the limiting block and the rigid block, while a baffle is installed at the rear end. The block aligns with the limiting groove, so under the impact of the liquid material, the block moves guided by the groove until it touches the baffle, where it is stopped and cannot move further. Of course, without the impact of liquid raw materials, the block will move towards the stop block under the elastic effect of the compressed spring until it blocks the outlet.

[0014] The beneficial effects of this invention are: it can achieve the purpose of adding water into the mixture while it is being stirred; it is equipped with channels for adding solid and liquid raw materials; and it can smoothly control the stirring of hard blocks. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the preparation tube used in the method of the present invention;

[0016] Figure 2 This is a schematic diagram of the internal structure of the preparation cylinder used in the method of this invention;

[0017] Figure 3 This is a schematic diagram of the structure of the hard block used in the method of this invention;

[0018] Figure 4 yes Figure 3 Enlarged sectional view at point A in the middle;

[0019] Figure 5 This is a schematic diagram of the working state of the blocking block used in the method of the present invention;

[0020] Figure 6 This is a schematic diagram of the limiting block used in the method of the present invention.

[0021] In the diagram: 1. Preparation cylinder, 2. Top plate, 3. Bottom plate, 4. Gap, 5. Through pipe, 6. Support block, 7. Control shaft, 8. Outlet, 9. Hole plug, 10. Moving groove one, 11. Moving groove two, 12. Connecting block, 13. Rolling bearing, 14. Guide block, 15. Rotating groove, 16. Hard block, 17. Rotating block, 18. Water pipe, 19. Water outlet, 20. Stop block, 21. Blocking block, 22. Compression spring, 23. Limiting block, 24. Limiting groove, 25. Baffle. Detailed Implementation

[0022] The invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0023] A moisture-retaining refractory mortar comprises the following raw materials: 65-125 parts clay powder, 2-4 parts bauxite powder, 3-5 parts mullite powder, 24-26 parts sodium phosphate, 25-27 parts potassium phosphate, 0.07-0.4 parts sodium lactate, 1-3 parts oxalic acid, 1-4 parts white clay, 2-3 parts kaolin, 1-3 parts carboxymethyl cellulose, and 14-16 parts liquid water. A preferred formulation comprises: 100 parts clay powder, 3 parts bauxite powder, 4 parts mullite powder, 25 parts sodium phosphate, 26 parts potassium phosphate, 0.2 parts sodium lactate, 2 parts oxalic acid, 2 parts white clay, 2 parts kaolin, 2 parts carboxymethyl cellulose, and 15 parts liquid water.

[0024] A method for preparing a moisture-retaining refractory slurry, using a moisture-retaining refractory slurry preparation device, comprising a preparation cylinder 1, a top plate 2 and a bottom plate 3 mounted on the preparation cylinder 1, the top plate 2 being placed at the top of the preparation cylinder 1 and the bottom plate 3 being placed at the bottom of the preparation cylinder 1, both the top plate 2 and the bottom plate 3 being detachably connected to the preparation cylinder 1, with a gap 4 between the top plate 2 and the top of the preparation cylinder 1, a through pipe 5 mounted on the top plate 2, the top end of the through pipe 5 passing through the top plate 2 and extending outside the preparation cylinder 1, the bottom end of the through pipe 5 being detachably connected to the bottom plate 3, a plurality of hard blocks 16 mounted on the through pipe 5, the plurality of hard blocks 16 being symmetrically distributed around the through pipe 5, a plurality of water pipes 18 mounted on the hard blocks 16, the plurality of water pipes 18 being evenly distributed, and a plurality of water outlets 19 provided on the water pipes 18, specifically including the following steps:

[0025] Step 1: Mix the clay powder, bauxite powder and mullite powder, and pour the mixture into the preparation cylinder 1 through the gap 4 between the top of the preparation cylinder 1 and the top plate 2. Control the flow pipe 5 to stir and mix the clay powder, bauxite powder and mullite powder evenly.

[0026] Specifically, the connection between the top plate 2 and the preparation cylinder 1, as well as the connection between the bottom plate 3 and the preparation cylinder 1, are completed first. The bottom plate 3 is placed at the bottom of the preparation cylinder 1, and the connection can be a threaded connection, which facilitates the installation and disassembly of the bottom plate 3, allowing for easy inspection of the internal structure of the preparation cylinder 1. The top of the preparation cylinder 1 has a second movable groove 11, and the top plate 2 has a first movable groove 10. The positions of the first movable groove 10 and the second movable groove 11 correspond. Several support blocks 6 are installed at the first movable groove 10, symmetrically distributed around the through pipe 5. One end of each support block 6 is placed in the first movable groove 10 and connected to the top plate 2, while the other end is placed in the second movable groove 11. In other words, the support blocks 6 limit the top plate 2 to the top of the preparation cylinder 1. Next, the external stirring equipment, such as the motor and the connecting pipe 5, is connected. The base 3 is equipped with a rolling bearing 13, and the bottom end of the connecting pipe 5 can be connected to the inner ring of the rolling bearing 13. The outer ring of the rolling bearing 13 is connected to the base 3, and the top end of the connecting pipe 5 passes through the top plate 2 and is placed outside the preparation cylinder 1. In this way, the motor shaft on the motor can be connected to the top end of the connecting pipe 5 outside the preparation cylinder 1. Next, the motor can be controlled to drive the through pipe 5 to rotate. The through pipe 5 can then drive the hard block 16 to rotate. There are several hard blocks 16, which are symmetrically distributed around the through pipe 5. Then, the clay powder, bauxite powder and mullite powder can be mixed. This mixing can be done by pouring the prepared proportions of clay powder, bauxite powder and mullite powder into the gap 4 between the top of the preparation cylinder 1 and the top plate 2 at the same time. This gap 4 can be set to be located on the inner wall of the preparation cylinder 1. This allows the clay powder, bauxite powder and mullite powder to mix with each other in the stirring environment of the hard block 16, and the mixture is uniform. This completes the preparation of the refractory base material.

[0027] Step 2: Mix sodium phosphate and potassium phosphate and pour the mixture into the preparation cylinder 1 through the gap 4 between the top of the preparation cylinder 1 and the top plate 2. Stir the mixture by controlling the flow pipe 5. This not only ensures that the sodium phosphate and potassium phosphate are mixed evenly, but also incorporates them into the mixture of clay powder, bauxite powder and mullite powder.

[0028] Specifically: Then, according to the proportions of clay powder, bauxite powder, and mullite powder, the proportions of sodium phosphate and potassium phosphate are also prepared and poured into the preparation cylinder 1 through gap 4. Similarly, the sodium phosphate and potassium phosphate are mixed here under the stirring of the hard block 16 driven by the through pipe 5. Not only are the sodium phosphate and potassium phosphate mixed evenly, but they can also be mixed with the already mixed refractory base material. The mixing of sodium phosphate and potassium phosphate here completes the preparation of the binder.

[0029] Step 3: Mix oxalic acid into the sodium lactate solution and pour it through the top of tube 5, allowing the rotating tube 5 to mix the solution into the powder mixture and ensure full contact.

[0030] Specifically, oxalic acid is then mixed into the sodium lactate solution. The proportions of oxalic acid and sodium lactate are prepared according to the proportions of clay powder, bauxite powder, and mullite powder. In fact, the preparation of the preservative is already completed here. The prepared preservative is poured into the top of the connecting tube 5 outside the preparation cylinder 1, so that the preservative can flow into the preparation cylinder 1 under the guidance of the connecting tube 5. Furthermore, several water pipes 18 are installed on the hard block 16. One end of each water pipe 18 is connected to the connecting pipe 5, and the other end is placed at the connection between the hard block 16 and the rotating block 17. The rotating block 17 is placed in the rotating groove 15 on the inner wall of the preparation cylinder 1. Several water outlets 19 are evenly distributed on the water pipes 18. The baffles 20 installed on the water pipes 18 are located at the water outlets 19. The baffles 20 have several fine holes and several compression springs 22 are installed on the baffles 20. The block 21 is connected to the baffles 20 through the compression springs 22, and there is a space between the baffles 20 and the block 21. Therefore, the liquid preservative in the water pipes 18 can flow towards the water outlets 19. The block 21 at point 9 has an impact effect, while the limiting block 23 installed on the hard block 16 is also located at the outlet 19. The limiting block 23 has several limiting grooves 24. The front end of the limiting groove 24 is located at the connection between the limiting block 23 and the hard block 16, and the rear end is equipped with a baffle 25. Thus, the block 21 impacted by the preservative can move towards the baffle 25 and also move towards the limiting groove 24 on the limiting block 23, and move under the limitation until it touches the baffle 25 and is blocked and cannot move further. In this way, a small gap can be left between the block 21 and the baffle 20, and the small gap is connected to the space. Then the liquid preservative in the space can be discharged through the small gap and flow into the preparation cylinder 1 to mix with the refractory base material and the binder. Of course, without the impact effect, the block 21 moves towards the baffle 20 under the elastic effect of the compression spring 22 until the small gap is closed. Here, the solid raw materials in the preparation cylinder 1 cannot enter the water pipe 18 due to the impact of the liquid preservative, and after the small gap is closed, there is no channel for them to enter the water pipe 18.

[0031] Step 4: After mixing the white clay and kaolin, pour the mixture into the preparation cylinder 1 through the gap 4 between the top of the preparation cylinder 1 and the top plate 2. Under the stirring state of the connecting pipe 5, let the white clay and kaolin be mixed into the powder already prepared.

[0032] Specifically, the mixture of white clay and kaolin is then poured into the preparation cylinder 1 through gap 4. The proportions of white clay and kaolin are prepared according to the proportions of clay powder, bauxite powder, and mullite powder. The mixture is poured in while the tube 5 is stirring, thus adding the plasticizer effect of the white clay and kaolin.

[0033] Step 5: Clean the top of gap 4 and the top of the tube 5. Dissolve carboxymethyl cellulose in liquid water. According to the number of raw materials in the preparation cylinder 1 and the stirring time, pour the prepared liquid water and carboxymethyl cellulose solution into the tube 5 through the top of the tube. The rotating tube 5 can then be sprayed into the raw materials through the outlet 19. In this way, the preparation of the moisturizing refractory slurry can be successfully completed.

[0034] Specifically: Finally, the top of gap 4 and the top of the pipe 5 can be cleaned. Then, carboxymethyl cellulose is dissolved in liquid water. The ratio of carboxymethyl cellulose to liquid water is adjustable, depending not only on the ratio of clay powder, bauxite powder, and mullite powder, but also on the required stirring time of the mud. The mixed liquid raw materials (here, carboxymethyl cellulose is dissolved in liquid water to prepare the water-retaining agent) can be poured in through the top of the pipe 5. Similarly, the water-retaining agent, like the binder, will penetrate into the mud raw materials under the guiding effect of the pipe 5 and the water pipe 18. Moreover, several water pipes 18 are evenly distributed on the hard block 16, so that the water-retaining agent can smoothly penetrate into the mud raw materials under the stirring state of the hard block 16, achieving the purpose of adding water to the inside of the mixture under the stirring state.

[0035] like Figure 1 and Figure 2In the illustrated embodiment, a method for preparing a moisture-retaining refractory slurry includes a second movable groove 11 at the top of a preparation cylinder 1 and a first movable groove 10 on a top plate 2. The positions of the first movable groove 10 and the second movable groove 11 correspond to those of the first movable groove 11. Several support blocks 6 are installed at the first movable groove 10, symmetrically distributed around a connecting pipe 5. One end of each support block 6 is placed inside the first movable groove 10 and connected to the top plate 2, while the other end is placed inside the second movable groove 11. A control shaft 7 is installed on each support block 6, with its bottom end connected to the support block 6 and a gap between its top end and the top plate 2. A rolling bearing 13 is installed on the base plate 3, and a connecting block 12 is installed at the bottom of the connecting pipe 5. The connecting block 12 is solid and connects to the connecting pipe 5. The rolling bearing 13 includes an inner ring and an outer ring, with the connecting block 12 connected to the inner ring and the outer ring connected to the base plate 3. A guide block 14 is mounted on the chassis 3 and connected to the connecting block 12. The guide block 14 is positioned at the upper end of the rolling bearing 13, and the lower end of the rolling bearing 13 is positioned inside the chassis 3. The preparation cylinder 1 has several outlets 8. The center end of the guide block 14 is fitted onto the connecting block 12, and the outer edge of the guide block 14 is positioned at the inner wall of the preparation cylinder 1. The distance between the outer edge of the guide block 14 and the chassis 3 is less than the distance between the center end of the guide block 14 and the chassis 3. A height difference is left between the outlet 8 and the outer edge of the guide block 14. A plug 9 is installed at the outlet 8. The rear end of the plug 9 matches the outlet 8, and a distance is left between the front end of the plug 9 and the outer wall of the preparation cylinder 1.

[0036] like Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the front end of the hard block 16 is connected to the through pipe 5, the inner wall of the preparation cylinder 1 is provided with a rotating groove 15, the rear end of the hard block 16 is equipped with a rotating block 17, the rotating block 17 is placed in the rotating groove 15, one end of the water pipe 18 is connected to the through pipe 5, and the other end of the water pipe 18 is placed at the connection between the hard block 16 and the rotating block 17. A stop block 20 is installed on the water pipe 18. The stop block 20 has several small holes. Several compression springs 22 are installed on the stop block 20. A block block 21 is installed on the compression springs 22. There is a space between the stop block 20 and the block block 21. The compression springs 22 are evenly distributed in the space. The block block 21 is connected to the stop block 20 through the compression springs 22. One end of the small hole is connected to the water pipe 18, and the other end of the small hole is connected to the space. Several limiting blocks 23 are installed on the hard block 16. Several limiting blocks are symmetrically distributed with the water outlet 19 as the center. Several limiting grooves 24 are provided on the limiting blocks 23. Several limiting grooves 24 are symmetrically distributed with the center of the block block 21 as the base point. The front end of the limiting groove 24 is placed at the connection between the limiting block 23 and the hard block 16. A baffle 25 is installed at the rear end of the limiting groove 24. The block block 21 matches the limiting groove 24.

[0037] First, connect the top plate 2 and the preparation cylinder 1, as well as the bottom plate 3 and the preparation cylinder 1. The bottom plate 3 is placed at the bottom of the preparation cylinder 1, and the connection can be a threaded connection, which facilitates the installation and disassembly of the bottom plate 3, allowing for easy inspection of the internal structure of the preparation cylinder 1. The top of the preparation cylinder 1 has a second movable groove 11, and the top plate 2 has a first movable groove 10. The positions of the first movable groove 10 and the second movable groove 11 correspond. Several support blocks 6 are installed at the first movable groove 10, symmetrically distributed around the connecting pipe 5. One end of each support block 6 is placed in the first movable groove 10 and connected to the top plate 2, while the other end is placed in the second movable groove 11. In other words, the support blocks 6 limit the top plate 2 to the top of the preparation cylinder 1. Next, the external stirring equipment, such as the motor and the connecting pipe 5, is connected. The base 3 is equipped with a rolling bearing 13, and the bottom end of the connecting pipe 5 can be connected to the inner ring of the rolling bearing 13. The outer ring of the rolling bearing 13 is connected to the base 3, and the top end of the connecting pipe 5 passes through the top plate 2 and is placed outside the preparation cylinder 1. In this way, the motor shaft on the motor can be connected to the top end of the connecting pipe 5 outside the preparation cylinder 1. Next, the motor can be controlled to drive the through pipe 5 to rotate. The through pipe 5 can then drive the hard block 16 to rotate. There are several hard blocks 16, which are symmetrically distributed around the through pipe 5. Then, the clay powder, bauxite powder and mullite powder can be mixed. This mixing can be done by pouring the prepared proportions of clay powder, bauxite powder and mullite powder into the gap 4 between the top of the preparation cylinder 1 and the top plate 2 at the same time. This gap 4 can be set to be located on the inner wall of the preparation cylinder 1. This allows the clay powder, bauxite powder and mullite powder to mix with each other in the stirring environment of the hard block 16, and the mixture is uniform. This completes the preparation of the refractory base material.

[0038] Then, according to the proportions of clay powder, bauxite powder, and mullite powder, the proportions of sodium phosphate and potassium phosphate are also poured into the preparation cylinder 1 through gap 4. Similarly, the sodium phosphate and potassium phosphate are mixed here under the stirring of the hard block 16 driven by the through pipe 5. Not only are the sodium phosphate and potassium phosphate mixed evenly, but they can also be mixed with the already mixed refractory base material. The mixing of sodium phosphate and potassium phosphate here completes the preparation of the binder.

[0039] Next, oxalic acid is mixed into the sodium lactate solution. The proportions of oxalic acid and sodium lactate are prepared according to the proportions of clay powder, bauxite powder, and mullite powder. In fact, the preparation of the preservative is already completed here. The prepared preservative is poured into the top of the connecting tube 5 outside the preparation cylinder 1, so that the preservative can flow into the preparation cylinder 1 under the guidance of the connecting tube 5. Furthermore, several water pipes 18 are installed on the hard block 16. One end of each water pipe 18 is connected to the connecting pipe 5, and the other end is placed at the connection between the hard block 16 and the rotating block 17. The rotating block 17 is placed in the rotating groove 15 on the inner wall of the preparation cylinder 1. Several water outlets 19 are evenly distributed on the water pipes 18. The baffles 20 installed on the water pipes 18 are located at the water outlets 19. The baffles 20 have several fine holes and several compression springs 22 are installed on the baffles 20. The block 21 is connected to the baffles 20 through the compression springs 22, and there is a space between the baffles 20 and the block 21. Therefore, the liquid preservative in the water pipes 18 can flow towards the water outlets 19. The block 21 at point 9 has an impact effect, while the limiting block 23 installed on the hard block 16 is also located at the outlet 19. The limiting block 23 has several limiting grooves 24. The front end of the limiting groove 24 is located at the connection between the limiting block 23 and the hard block 16, and the rear end is equipped with a baffle 25. Thus, the block 21 impacted by the preservative can move towards the baffle 25 and also move towards the limiting groove 24 on the limiting block 23, and move under the limitation until it touches the baffle 25 and is blocked and cannot move further. In this way, a small gap can be left between the block 21 and the baffle 20, and the small gap is connected to the space. Then the liquid preservative in the space can be discharged through the small gap and flow into the preparation cylinder 1 to mix with the refractory base material and the binder. Of course, without the impact effect, the block 21 moves towards the baffle 20 under the elastic effect of the compression spring 22 until the small gap is closed. Here, the solid raw materials in the preparation cylinder 1 cannot enter the water pipe 18 due to the impact of the liquid preservative, and after the small gap is closed, there is no channel for them to enter the water pipe 18.

[0040] Then, the white clay and kaolin are mixed and poured into the preparation cylinder 1 through gap 4. The proportions of white clay and kaolin are prepared according to the proportions of clay powder, bauxite powder and mullite powder. The mixture is poured in while the tube 5 is stirring, so the plasticizer effect of the white clay and kaolin is also added.

[0041] Finally, the top of gap 4 and the top of the pipe 5 can be cleaned. Then, carboxymethyl cellulose is dissolved in liquid water. The ratio of carboxymethyl cellulose to liquid water is adjustable, depending not only on the ratio of clay powder, bauxite powder, and mullite powder, but also on the required stirring time of the slurry. The mixed liquid raw materials (here, carboxymethyl cellulose dissolved in liquid water is the preparation of the water-retaining agent) can be poured in through the top of the pipe 5. Similarly, the water-retaining agent, like the binder, will penetrate into the slurry raw materials under the guiding effect of the pipe 5 and the water pipe 18. Moreover, several water pipes 18 are evenly distributed on the hard block 16, so that the water-retaining agent can smoothly penetrate into the slurry raw materials while the hard block 16 is being stirred, achieving the purpose of adding water to the inside of the mixture while it is being stirred.

[0042] The clay powder here is a natural product of hydrated aluminosilicate, characterized by strong plasticity, good binding properties, excessive thixotropy, suitable shrinkage, and high refractoriness. Bauxite powder is lightweight, heat-resistant, has good thermal stability, low thermal conductivity, low heat capacity, and good resistance to mechanical vibration. Mullite, as a refractory material, exhibits uniform expansion, good thermal shock stability, high load softening point, high hardness, and good chemical corrosion resistance. Sodium phosphate and potassium phosphate can be used to prepare binders, as they are readily soluble in water and easy to mix. Oxalic acid can be readily incorporated into sodium lactate solution, exhibiting a strong synergistic effect. Sodium lactate is not only hygroscopic but also miscible in water. The mixing of white clay and kaolin constitutes the preparation of a plasticizer. Liquid water infused with carboxymethyl cellulose can be easily introduced into the raw materials in preparation cylinder 1 through the flow and stirring of pipe 5, thus facilitating the preparation of the slurry and maintaining its moisture content.

Claims

1. A method of preparing a moisture-retentive refractory slurry, characterized by, The moisture-proof refractory mortar comprises the following formula raw materials: clay powder 65-125 parts, bauxite powder 2-4 parts, mullite powder 3-5 parts, sodium phosphate 24-26 parts, potassium phosphate 25-27 parts, sodium lactate 0.07-0.4 parts, oxalic acid 1-3 parts, white clay 1-4 parts, kaolin 2-3 parts, carboxymethyl cellulose 1-3 parts, and liquid water 14-16 parts. The moisture-proof refractory mortar preparation device comprises a preparation cylinder (1), wherein the preparation cylinder (1) is provided with a top disc (2) and a bottom disc (3), the top disc (2) is arranged at the top end of the preparation cylinder (1), the bottom disc (3) is arranged at the bottom end of the preparation cylinder (1), the top disc (2) and the bottom disc (3) are detachably connected with the preparation cylinder (1), a gap (4) is formed between the top end of the top disc (2) and the preparation cylinder (1), a through pipe (5) is arranged on the top disc (2), the top end of the through pipe (5) penetrates through the top disc (2) and is arranged outside the preparation cylinder (1), the bottom end of the through pipe (5) is detachably connected with the bottom disc (3), a plurality of hard blocks (16) are arranged on the through pipe (5), the plurality of hard blocks (16) are symmetrically distributed around the through pipe (5), a plurality of water pipes (18) are arranged on the hard blocks (16), the plurality of water pipes (18) are uniformly distributed, a plurality of water outlets (19) are arranged on the water pipes (18), and the moisture-proof refractory mortar preparation device comprises the following steps: Step one: after the clay powder, the bauxite powder and the mullite powder are mixed, the mixture is poured into the preparation cylinder (1) through the gap (4) between the top end of the preparation cylinder (1) and the top disc (2), and the through pipe (5) is controlled to stir the mixture so that the clay powder, the bauxite powder and the mullite powder are uniformly mixed; Step two: the sodium phosphate and the potassium phosphate are mixed, the mixture is poured into the preparation cylinder (1) through the gap (4) between the top end of the preparation cylinder (1) and the top disc (2), and the through pipe (5) is controlled to stir the mixture so that the sodium phosphate and the potassium phosphate are uniformly mixed and incorporated into the mixture of the clay powder, the bauxite powder and the mullite powder; Step three: the oxalic acid is mixed into the sodium lactate solution, and the mixture is poured into the through pipe (5) through the top end of the through pipe (5), so that the through pipe (5) in rotation mixes the solution into the mixed powder and fully contacts the mixed powder; Step four: after the white clay and the kaolin are mixed, the mixture is poured into the preparation cylinder (1) through the gap (4) between the top end of the preparation cylinder (1) and the top disc (2), and the white clay and the kaolin are mixed into the mixed powder under the stirring of the through pipe (5); Step five: the gap (4) and the top end of the through pipe (5) are cleaned, the carboxymethyl cellulose is dissolved in the liquid water, according to the proportions of the raw materials in the preparation cylinder (1) and the stirring time, the prepared liquid water and the carboxymethyl cellulose solution are poured into the through pipe (5) through the top end of the through pipe (5), and the through pipe (5) in rotation can sprinkle the liquid water and the carboxymethyl cellulose solution into the raw materials through the water outlets (19), so that the preparation of the moisture-proof refractory mortar can be smoothly completed. The front end of the hard block (16) is connected with the through pipe (5), the inner wall of the preparation cylinder (1) is provided with a rotating groove (15), the rear end of the hard block (16) is provided with a rotating block (17), the rotating block (17) is arranged in the rotating groove (15), one end of the water pipe (18) is communicated with the through pipe (5), the other end of the water pipe (18) is arranged at the connecting position of the hard block (16) and the rotating block (17), the water pipe (18) is provided with a stop block (20), the stop block (20) is provided with a plurality of holes, the stop block (20) is provided with a plurality of compression springs (22), the compression spring (22) is provided with a plug (21), the stop block (20) and the plug (21) are provided with a space, the compression spring (22) is uniformly distributed in the space, the plug (21) is connected with the stop block (20) through the compression spring (22), one end of the hole is communicated with the water pipe (18), the other end of the hole is communicated with the space, the hard block (16) is provided with a plurality of limiting blocks (23), the plurality of limiting blocks (23) are symmetrically distributed with the water outlet (19) as the center, the limiting block (23) is provided with a plurality of limiting grooves (24), the plurality of limiting grooves (24) are symmetrically distributed with the center of the plug (21) as the base point, the front end of the limiting groove (24) is arranged at the connecting position of the limiting block (23) and the hard block (16), the rear end of the limiting groove (24) is provided with a baffle (25), the plug (21) is matched with the limiting groove (24).

2. The method for preparing a moisture-retaining refractory slurry according to claim 1, characterized in that, The top end of the preparation cylinder (1) is provided with a moving groove two (11), the top disc (2) is provided with a moving groove one (10), the position of the moving groove one (10) and the position of the moving groove two (11) correspond to each other, the moving groove one (10) is provided with a plurality of supporting blocks (6), the plurality of supporting blocks (6) are symmetrically distributed with the through pipe (5) as the center, one end of the supporting block (6) is arranged in the moving groove one (10), one end of the supporting block (6) is connected with the top disc (2), the other end of the supporting block (6) is arranged in the moving groove two (11).

3. A method of preparing a moisture resistant refractory slurry according to claim 2, characterized in that, The supporting block (6) is provided with a control shaft (7), the bottom end of the control shaft (7) is connected with the supporting block (6), the top end of the control shaft (7) and the top disc (2) are left with a gap.

4. The method for preparing a moisture-retaining refractory slurry according to claim 1, characterized in that, The bottom disc (3) is provided with a rolling bearing (13), the bottom end of the through pipe (5) is provided with a connecting block (12), the connecting block (12) is a solid body, the through pipe (5) is connected with the connecting block (12), the rolling bearing (13) comprises an inner ring and an outer ring, the connecting block (12) is connected with the inner ring, and the outer ring is connected with the bottom disc (3).

5. A method of preparing a moisture resistant refractory slurry according to claim 4, characterized in that, The bottom disc (3) is provided with a guide block (14), the guide block (14) is connected to the connecting block (12), the guide block (14) is arranged at the upper end of the rolling bearing (13), and the lower end of the rolling bearing (13) is arranged in the bottom disc (3).

6. A method of preparing a moisture resistant refractory slurry according to claim 5, characterized in that, The preparation cylinder (1) is provided with a plurality of outlets (8), the center end of the guide block (14) is sleeved on the connecting block (12), the outer edge of the guide block (14) is arranged at the inner wall of the preparation cylinder (1), the distance between the outer edge of the guide block (14) and the bottom disc (3) is less than the distance between the center end of the guide block (14) and the bottom disc (3), a height difference is left between the outlet (8) and the outer edge of the guide block (14), the outlet (8) is provided with a hole plug (9), the rear end of the hole plug (9) is matched with the outlet (8), and a distance is left between the front end of the hole plug (9) and the outer wall of the preparation cylinder (1).

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