Preparation method and preparation device of ardealite self-leveling mortar

Abstract

The invention provides a preparation method of ardealite self-leveling mortar, which is characterized by comprising the following steps: S1, raw material preparation: preparing ardealite self-leveling mortar raw materials according to a weight ratio, the ardealite self-leveling mortar raw materials comprise ardealite, red mud and auxiliary materials. S2, grinding and crushing treatment: grinding and converting larger particles in the phosphogypsum into small particles through a grinding machine. S3, mixing and calcining: mixing the crushed ardealite with red mud, and carrying out calcining and ball-milling treatment; the composite cementing material is obtained by mixing and modifying the red mud and the phosphogypsum. An eccentric wheel is rotationally adjusted by an adjusting mechanism, so that a sliding pipe and a piston plate lift and slide back and forth in an inner cavity under the action of the eccentric wheel and a spring, and air and auxiliary materials in the inner cavity can be discharged into a mixing barrel, so that the mixing efficiency of the ardealite self-leveling mortar raw materials is improved, manual operation is not needed, and the labor intensity of workers is reduced. The preparation device is easy to operate and convenient to use.

Description

Technical Field

[0001] The invention relates to the technical field of phosphogypsum self-leveling mortar preparation, and in particular to a phosphogypsum self-leveling mortar preparation method and a preparation device. Background Art

[0002] Phosphogypsum is an industrial by-product. Using phosphogypsum to prepare self-leveling mortar can reduce dependence on natural gypsum and reduce mining. Phosphogypsum self-leveling mortar has good fluidity, stability, and rapid solidification and drying characteristics.

[0003] The β-phosphogypsum-based self-leveling mortar and its preparation method with publication number CN111943627A, this scheme extrude the extrusion plate and the airbag through the motor, screw, raw material box and material box, blows the air in the airbag to the raw material, so that the raw materials are mixed with each other, but after each squeezing of the airbag, it is necessary to manually remove the rubber plug and add air to the inside of the airbag, the operation is relatively cumbersome, and the raw material is also easy to enter the air outlet, the chamber and the air duct to block the air duct, affecting the subsequent use of the airbag.

[0004] To this end, the present invention provides a method and a device for preparing phosphogypsum self-leveling mortar. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a method and device for preparing phosphogypsum self-leveling mortar to solve the problems raised in the above-mentioned background technology. The present invention adjusts the rotation of the eccentric wheel through an adjusting mechanism, so that the sliding tube and the piston plate can reciprocate and slide inside the inner cavity under the action of the eccentric wheel and the spring, and can discharge the air and auxiliary materials inside the inner cavity into the interior of the mixing barrel, thereby improving the mixing efficiency of the phosphogypsum self-leveling mortar raw materials, and does not require manual operation. The one-way valve can prevent the mixed raw materials from flowing back, making the operation of the preparation device simple and easy to use.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] A method for preparing phosphogypsum self-leveling mortar comprises the following steps:

[0008] S1: Raw material preparation: prepare the raw materials of phosphogypsum self-leveling mortar according to the weight ratio. The raw materials of phosphogypsum self-leveling mortar include phosphogypsum, red mud and auxiliary materials.

[0009] S2: Grinding and crushing: The larger particles in the phosphogypsum are ground into small particles through a grinder.

[0010] S3: Mixing and calcining: The crushed phosphogypsum is mixed with red mud, and then calcined and ball-milled; a composite cementitious material is obtained by mixing and modifying red mud and phosphogypsum.

[0011] S4: Uniform mixing: The modified phosphogypsum, red mud and auxiliary materials are uniformly mixed to make phosphogypsum self-leveling mortar.

[0012] Furthermore, the auxiliary materials in step S1 and step S4 include aggregate, retarder, defoamer, water retaining agent and dispersible latex powder.

[0013] Furthermore, in step S4, cellulose ether and a method and device for preparing a phosphogypsum self-leveling mortar are added to increase the fluidity, crack resistance and adhesion of the phosphogypsum self-leveling mortar.

[0014] The top of the mixing drum is provided with an auxiliary material adding mechanism, and the auxiliary material adding mechanism comprises a fixed drum and a feeding mechanism, and the fixed drum is fixedly arranged at the top center position of the inner side of the mixing drum, and inner cavities are symmetrically opened inside at both ends of the fixed drum, and a piston plate is slidably arranged inside the inner cavity, and a sliding tube is fixedly arranged at the center position of the piston plate, and an extrusion plate is fixedly arranged on one side of the outer wall of the sliding tube, and an adjusting mechanism is arranged inside the top of the fixed drum, and the adjusting mechanism is in contact with the bottom of the extrusion plate through an eccentric wheel, and the adjusting mechanism comprises a main gear and a side gear, and the feeding mechanism comprises a fixed cover, and the fixed cover is fixedly arranged at the top center position of the mixing drum, and a rotating cover is provided on the top of the fixed cover for limiting rotation by a limiting rod, and a discharging drum is symmetrically fixedly connected on the top of the rotating cover, and a mixing and stirring mechanism is arranged inside the mixing drum.

[0015] Furthermore, the mixing and stirring mechanism includes a rotating rod, which is rotatably installed at the center position inside the mixing barrel, the top end of the rotating rod is movably arranged at the center position inside the fixed barrel, and stirring rods are symmetrically fixed on both sides of the bottom end of the rotating rod.

[0016] Furthermore, a scraper is fixedly arranged between one ends of the stirring rod on the same side, and the scraper is in close contact with the inner wall of the mixing barrel. A bottom bin is opened inside the bottom end of the mixing barrel, and a servo motor is fixedly arranged on the top of the bottom bin. The output shaft of the servo motor is fixedly connected to the bottom end of the rotating rod.

[0017] Furthermore, a disc is fixedly arranged between the fixed cylinder and the stirring rod on the outer side of the rotating rod, and a main material inlet and a water inlet are obliquely fixed on both sides of the top of the mixing cylinder, and the bottom ends of the main material inlet and the water inlet are respectively arranged above the two ends of the disc, and a discharge outlet is opened on one side of the bottom end of the mixing cylinder.

[0018] Furthermore, a discharge pipe is fixedly provided at the bottom of the inner cavity corresponding to the bottom of the fixed cylinder, a one-way valve is fixedly provided on the discharge pipe, a spring is fixedly provided between the top of the piston plate and the top wall of the inner cavity, the spring is sleeved on the outside of the sliding tube, a one-way valve is fixedly provided at the top of the sliding tube corresponding to the top of the extrusion plate, fixed tubes are fixedly provided on both sides of the top of the mixing cylinder at the positions of the sliding tubes, and the top of the sliding tube is slidably provided inside the fixed tube.

[0019] Furthermore, through holes are symmetrically opened inside the two ends of the fixed cover, the fixed tube is fixedly connected to the through holes, the limit rod is installed at the center position inside the fixed cover for limited rotation, a limit mechanism is arranged between the rotating cover and the fixed cover, the limit mechanism clamping rod, the shape of the clamping rod is "T" type, a limit spring is fixedly arranged between the outer side of one end of the clamping rod and the inner wall of the fixed cover, the clamping rod is symmetrically slidably arranged inside the four ends of the fixed cover, one end of the clamping rod is in the shape of an arc, and one end of the clamping rod is clamped inside the inner wall of the rotating cover.

[0020] Furthermore, the main gear is fixedly arranged at the top end of the rotating rod, and fixed plates are symmetrically fixedly arranged on both sides of the main gear corresponding to the inner sides of the fixed cylinder, and an axle is rotatably arranged inside the top end of the fixed plate, and a side gear is fixedly arranged at one end of the axle, and the side gear and the main gear are meshed with each other, and the eccentric wheel is fixedly installed on the other end of the axle.

[0021] Beneficial effects of the invention: A method and device for preparing phosphogypsum self-leveling mortar of the invention include a mixing barrel, a main material inlet, a water inlet, a discharge outlet, an auxiliary material adding mechanism, a bottom bin, a servo motor, a rotating rod, a stirring rod, a scraper, a disc, a fixed barrel, a fixed cover, a rotating cover, a discharge barrel, an inner cavity, a piston plate, a sliding pipe, a spring, a one-way valve, a main gear, a shaft, a side gear, a fixed plate, an eccentric wheel, an extrusion plate, a fixed pipe, a clamping rod, a limit rod, and a through hole.

[0022] 1. The method and device for preparing the phosphogypsum self-leveling mortar drive a rotating rod, a stirring rod, a scraper and other mixing and stirring mechanisms through a servo motor to stir inside a mixing barrel, so as to facilitate mixing of the phosphogypsum self-leveling mortar raw materials, and the rotating rod drives the eccentric wheel to rotate through the main gear, the side gear and the shaft rod, and the eccentric wheel can squeeze the extrusion plate, and under the action of the eccentric wheel, the extrusion plate and the spring, the sliding pipe drives the piston plate to reciprocate and slide inside the inner cavity, so as to facilitate the extraction of auxiliary materials from the inside of the discharge barrel through the fixed pipe and the sliding pipe, and the air and auxiliary materials inside the inner cavity are ejected through the discharge pipe and blown to the disc, so that the auxiliary materials are diffused, so as to facilitate the full mixing of the phosphogypsum self-leveling mortar raw materials and improve the mixing efficiency of the phosphogypsum self-leveling mortar raw materials.

[0023] 2. The method and device for preparing the phosphogypsum self-leveling mortar are provided with a one-way valve installed on the top of the sliding pipe and the discharge pipe, which can prevent the airflow and the phosphogypsum self-leveling mortar raw materials from flowing back into the inner cavity, thereby avoiding affecting the subsequent addition of auxiliary materials; by arranging the main material inlet and the water inlet above the disc, the phosphogypsum and water can be flushed toward the disc and dispersed, so that the phosphogypsum, water and auxiliary materials can be fully mixed.

[0024] 3. The method and device for preparing the phosphogypsum self-leveling mortar can adjust the rotation of the discharge barrel by setting a limit rod and a rotating cover, which is convenient for adding auxiliary materials into the mixing barrel in batches through two of the discharge barrels, thereby improving the mixing efficiency of the phosphogypsum self-leveling mortar raw materials; the set fixed cover can close the other two discharge barrels, and the set clamping rod and limit spring can limit the rotating cover, which can improve the stability of the rotating cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a flow chart of a method for preparing phosphogypsum self-leveling mortar according to the present invention;

[0026] Figure 2 This is a structural diagram of a device for preparing phosphogypsum self-leveling mortar according to the present invention;

[0027] Figure 3 It is a front cross-sectional view of a device for preparing phosphogypsum self-leveling mortar according to the present invention;

[0028] Figure 4 A phosphogypsum self-leveling mortar preparation device according to the present invention Figure 3 Enlarged view of point A in the middle;

[0029] Figure 5 A phosphogypsum self-leveling mortar preparation device according to the present invention Figure 3 Enlarged view of point A in the middle;

[0030] Figure 6 This is a structural diagram of a feeding mechanism of a phosphogypsum self-leveling mortar preparation device of the present invention;

[0031] In the figure: 1. mixing barrel; 2. main material inlet; 3. water inlet; 4. discharge outlet; 5. auxiliary material adding mechanism; 6. bottom bin; 7. servo motor; 8. rotating rod; 9. stirring rod; 10. scraper; 11. disc; 12. fixed barrel; 13. fixed cover; 14. rotating cover; 15. discharge barrel; 16. inner cavity; 17. piston plate; 18. sliding pipe; 19. spring; 20. one-way valve; 21. main gear; 22. shaft; 23. side gear; 24. fixed plate; 25. eccentric wheel; 26. extrusion plate; 27. fixed pipe; 28. clamping rod; 29. ​​limit rod; 30. through hole. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] See also Figures 1 to 6 , the present invention provides a technical solution:

[0034] A method for preparing phosphogypsum self-leveling mortar comprises the following steps:

[0035] S1: Raw material preparation: prepare the raw materials of phosphogypsum self-leveling mortar according to the weight ratio. The raw materials of phosphogypsum self-leveling mortar include phosphogypsum, red mud and auxiliary materials.

[0036] S2: Grinding and crushing: The larger particles in the phosphogypsum are ground into small particles through a grinder.

[0037] S3: Mixing and calcining: The crushed phosphogypsum is mixed with red mud, and then calcined and ball-milled; a composite cementitious material is obtained by mixing and modifying red mud and phosphogypsum.

[0038] S4: Uniform mixing: The modified phosphogypsum, red mud and auxiliary materials are uniformly mixed to make phosphogypsum self-leveling mortar.

[0039] In this embodiment, the auxiliary materials in step S1 and step S4 include aggregate, retarder, defoamer, water retaining agent and dispersible latex powder. In step S4, cellulose ether and a method and device for preparing a phosphogypsum self-leveling mortar are added to increase the fluidity, crack resistance and adhesion of the phosphogypsum self-leveling mortar. By adding auxiliary materials such as retarder, cellulose ether and nano-carbon fiber during the preparation of the phosphogypsum self-leveling mortar, the performance of the phosphogypsum self-leveling mortar can be improved, and the construction of the phosphogypsum self-leveling mortar is convenient.

[0040] A phosphogypsum self-leveling mortar preparation device, comprising a mixing barrel 1, wherein an auxiliary material adding mechanism 5 is arranged at the top of the mixing barrel 1, wherein the auxiliary material adding mechanism 5 comprises a fixed barrel 12 and a feeding mechanism, wherein the fixed barrel 12 is fixedly arranged at the top center position of the inner side of the mixing barrel 1, and inner cavities 16 are symmetrically provided inside the two ends of the fixed barrel 12, wherein a piston plate 17 is slidably arranged inside the inner cavity 16, wherein a sliding tube 18 is fixedly arranged at the center position of the piston plate 17, and an extrusion plate 26 is fixedly arranged on one side of the outer wall of the sliding tube 18, wherein an adjusting mechanism is arranged inside the top of the fixed barrel 12, wherein the adjusting mechanism is in contact with the bottom of the extrusion plate 26 through an eccentric wheel 25, wherein the adjusting mechanism comprises a main gear 21 and a side gear 23, and wherein the feeding mechanism comprises a fixed cover 13, wherein the fixed cover 13 is fixedly arranged at the top center position of the mixing barrel 1, and the top of the fixed cover 13 The top of the rotating cover 14 is symmetrically fixed and connected to the discharging barrel 15, and the interior of the mixing barrel 1 is provided with a mixing and stirring mechanism. The rotation of the eccentric wheel 25 is adjusted by the adjusting mechanism so that the eccentric wheel 25 can extrude the extrusion plate 26, and the extrusion plate 26 drives the slide tube 18 and the piston plate 17 to move upward. Under the action of the one-way valve 20 at the bottom, the auxiliary materials and air inside the discharging barrel 15 pass through the fixed tube 27 and the slide tube 18 into the interior of the inner cavity 16, so as to facilitate the addition of air and auxiliary materials into the interior of the inner cavity 16. With the rotation of the eccentric wheel 25, the piston plate 17 and the slide tube 18 move downward under the elastic force of the spring 19, so that the air and auxiliary materials inside the inner cavity 16 can be sprayed out, so as to facilitate the diffusion of the auxiliary materials, thereby improving the mixing efficiency of the raw materials of the phosphogypsum self-leveling mortar, and no manual operation of the air intake is required.

[0041] In this embodiment, the mixing and stirring mechanism includes a rotating rod 8, which is rotatably installed at the center position inside the mixing barrel 1, and the top of the rotating rod 8 is movably arranged at the center position inside the fixed barrel 12. Stirring rods 9 are symmetrically fixedly arranged on both sides of the bottom end of the rotating rod 8, and a scraper 10 is fixedly arranged between one ends of the stirring rod 9 on the same side, and the scraper 10 is in close contact with the inner wall of the mixing barrel 1. A bottom bin 6 is opened inside the bottom end of the mixing barrel 1, and a servo motor 7 is fixedly arranged on the top of the bottom bin 6. The output shaft of the servo motor 7 is fixedly connected to the bottom end of the rotating rod 8. When the servo motor 7 drives the rotating rod 8 to rotate, the rotating rod 8 can drive the stirring rod 9 and the scraper 10 to rotate synchronously in the mixing barrel 1, so as to continue mixing the phosphogypsum self-leveling mortar, so that the raw materials of the phosphogypsum self-leveling mortar can be mixed evenly.

[0042] In this embodiment, a disc 11 is fixedly arranged between the fixed cylinder 12 and the stirring rod 9 on the outer side of the rotating rod 8, and a main material inlet 2 and a water inlet 3 are respectively fixed obliquely on both sides of the top of the mixing cylinder 1, and the bottom ends of the main material inlet 2 and the water inlet 3 are respectively arranged above the two ends of the disc 11, and a discharge port 4 is opened on one side of the bottom end of the mixing cylinder 1. The phosphogypsum and water entering through the main material inlet 2 and the water inlet 3 can impact the disc 11, which is convenient for dispersing the phosphogypsum and water, and facilitating the mixing of the phosphogypsum self-leveling mortar.

[0043] In this embodiment, a discharge pipe is fixedly provided at the bottom of the inner cavity 16 corresponding to the bottom of the fixed cylinder 12, and a one-way valve 20 is fixedly provided on the discharge pipe. A spring 19 is fixedly provided between the top of the piston plate 17 and the top wall of the inner cavity 16, and the spring 19 is sleeved on the outside of the sliding tube 18. A one-way valve 20 is fixedly provided on the top of the sliding tube 18 corresponding to the top of the extrusion plate 26. Fixed tubes 27 are fixedly provided at the positions of the sliding tube 18 on both sides of the top of the mixing cylinder 1, and the top of the sliding tube 18 is slidably provided inside the fixed tube 27. Through holes 30 are symmetrically provided inside the two ends of the fixed cover 13, and the fixed tube 27 is fixedly connected to the through holes 30. The limit rod 29 is limitedly rotated and installed at the central position of the inside of the fixed cover 13. A limiting mechanism is provided between the rotating cover 14 and the fixed cover 13. The limiting mechanism clamping rod 28 is in the shape of a "T" shape, and one end of the clamping rod 28 A limit spring is fixedly arranged between the outer side and the inner wall of the fixed cover 13, and the clamping rod 28 is symmetrically and slidably arranged inside the four ends of the fixed cover 13. One end of the clamping rod 28 is in the shape of an arc, and one end of the clamping rod 28 is clamped inside the inner wall of the rotating cover 14. When the piston plate 17 moves upward under the pull of the sliding tube 18, it can squeeze the spring 19, so that the spring 19 produces a restoring elastic force, which is convenient for squeezing the piston plate 17 downward, thereby spraying out the air and auxiliary raw materials inside the inner cavity 16. The sliding tube 18 and the fixed tube 27 can be used to receive the air and auxiliary raw materials inside the discharge barrel 15. By adjusting the rotation of the rotating cover 14, it is convenient to make two of the discharge barrels 15 face the through hole 3, which is convenient for adding auxiliary raw materials in batches, and the fixed cover 13 can close the bottom of the other two discharge barrels 15. The rotating cover 14 can be limited by the provided clamping rod 28 and the limit spring, thereby improving the stability of the rotating cover 14.

[0044] In this embodiment, the main gear 21 is fixedly arranged at the top of the rotating rod 8, and fixed plates 24 are symmetrically fixedly arranged on both sides of the main gear 21 corresponding to the inner sides of the fixed cylinder 12. A shaft rod 22 is rotatably arranged inside the top of the fixed plate 24, and a side gear 23 is fixedly arranged at one end of the shaft rod 22. The side gear 23 and the main gear 21 are meshed with each other, and the eccentric wheel 25 is fixedly installed on the other end of the shaft rod 22. When the rotating rod 8 rotates, it can drive the main gear 21 to rotate, and the main gear 21 meshes to drive the side gear 23 and the shaft rod 22 to rotate, so as to facilitate the rotation adjustment of the eccentric wheel 25 and facilitate the subsequent extrusion of the extrusion plate 26.

[0045] When using the method and device for preparing the phosphogypsum self-leveling mortar, the phosphogypsum is crushed and mixed with red mud, calcined, ball-milled, etc., and the rotating cover 14 is rotated on the top of the fixed cover 13. The rotating cover 14 drives the discharge barrel 15 to rotate and move, so that the four discharge barrels 15 are all staggered with the through hole 30, and the well-proportioned auxiliary materials are placed in the discharge barrel 15. The rotating cover 14 continues to rotate, and two of the discharge barrels 15 are moved to the top of the through hole 30. At this time, the clamping rod 28 is clamped inside the inner wall of the rotating cover 14 under the pulling force of the limit spring, which is convenient for limiting the rotating cover 14 through the limit mechanism. The servo motor 7 is started, and the servo motor 7 drives the rotating rod 8 to rotate inside the mixing barrel 1, and the rotating rod 8 drives the stirring rod 9, the scraper 10 and the disc 11 to rotate synchronously. The rotating rod 8 drives the main gear 21 to rotate at the same time, and the main gear 21 meshes and drives the side gear 23 and the shaft 22 to rotate. The shaft 22 drives the eccentric wheel 25 to squeeze the extrusion plate 26, and as the eccentric wheel 25 rotates, the extrusion plate 26 drives the slide tube 18 and the piston plate 17 to slide back and forth inside the inner cavity 16 under the elastic force of the spring 19, and the piston plate When the piston plate 17 and the slide tube 18 rise, the pressure inside the inner cavity 16 is reduced due to the restriction of the one-way valve 20 on the discharge pipe, and the auxiliary materials and air inside the discharge barrel 15 enter the inner cavity 16 through the through hole 30, the fixed pipe 27 and the slide tube 18 under atmospheric pressure. When the piston plate 17 and the slide tube 18 descend, the air and auxiliary materials inside the inner cavity 16 are discharged through the discharge pipe under the restriction of the one-way valve 20 on the slide tube 18, and impact the surface of the disc 11. The treated phosphogypsum is added to the interior of the mixing barrel 1 through the main material inlet 2, and the phosphogypsum also impacts the disc 11, so that the phosphogypsum Gypsum and auxiliary materials are diffused inside the mixing barrel 1 and stirred by the scraper 10 and the stirring rod 9, which can improve the mixing efficiency of the raw materials of the phosphogypsum self-leveling mortar; after the auxiliary materials inside the two discharge barrels 15 are discharged, the discharge barrel 15 is replaced by rotating the rotating cover 14, which is convenient for adding other auxiliary materials. After the mixing is completed, water is added to the inside of the mixing barrel 1 through the water inlet 3, and the water impacts the disc 11, which is convenient for mixing the water with the raw materials of the phosphogypsum self-leveling mortar, thereby making the phosphogypsum self-leveling mortar, which can improve the preparation efficiency of the phosphogypsum self-leveling mortar.

[0046] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0047] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A method for preparing phosphogypsum self-leveling mortar, characterized in that: The following steps are involved: S1: Raw material preparation: prepare the raw materials of phosphogypsum self-leveling mortar according to the weight ratio. The raw materials of phosphogypsum self-leveling mortar include phosphogypsum, red mud and auxiliary materials. S2: Grinding and crushing: The larger particles in the phosphogypsum are ground into small particles through a grinder. S3: Mixing and calcining: The crushed phosphogypsum is mixed with red mud, and then calcined and ball-milled; a composite cementitious material is obtained by mixing and modifying red mud and phosphogypsum. S4: Uniform mixing: The modified phosphogypsum, red mud and auxiliary materials are uniformly mixed to make phosphogypsum self-leveling mortar.

2. The method for preparing a phosphogypsum self-leveling mortar according to claim 1, characterized in that: The auxiliary materials in step S1 and step S4 include aggregate, retarder, defoamer, water retaining agent and dispersible latex powder.

3. The method for preparing a phosphogypsum self-leveling mortar according to claim 1, characterized in that: In the step S4, cellulose ether and the method and device for preparing the phosphogypsum self-leveling mortar are added to increase the fluidity, crack resistance and adhesion of the phosphogypsum self-leveling mortar.

4. A preparation device used in the method for preparing phosphogypsum self-leveling mortar according to claim 1, comprising a mixing drum (1), characterized in that: The top of the mixing barrel (1) is provided with an auxiliary material adding mechanism (5), and the auxiliary material adding mechanism (5) comprises a fixed barrel (12) and a feeding mechanism, the fixed barrel (12) is fixedly arranged at the top center position of the inner side of the mixing barrel (1), and inner cavities (16) are symmetrically opened inside the two ends of the fixed barrel (12), and a piston plate (17) is slidably arranged inside the inner cavity (16), a sliding tube (18) is fixedly arranged at the center position of the piston plate (17), and an extrusion plate (26) is fixedly arranged on one side of the outer wall of the sliding tube (18), and the top of the fixed barrel (12) is provided with a plurality of piston plates (17) and a plurality of piston plates (17) are provided. An adjusting mechanism is arranged inside the mixing barrel (1), and the adjusting mechanism is in contact with the bottom of the extrusion plate (26) through an eccentric wheel (25). The adjusting mechanism comprises a main gear (21) and a side gear (23). The feeding mechanism comprises a fixed cover (13). The fixed cover (13) is fixedly arranged at the top center position of the mixing barrel (1). A rotating cover (14) is arranged on the top of the fixed cover (13) for limited rotation through a limiting rod (29). A discharging barrel (15) is symmetrically fixedly connected to the top of the rotating cover (14). A mixing and stirring mechanism is arranged inside the mixing barrel (1).

5. The preparation device according to claim 4, characterized in that: The mixing and stirring mechanism comprises a rotating rod (8), wherein the rotating rod (8) is rotatably mounted at the center position inside the mixing barrel (1), the top end of the rotating rod (8) is movably arranged at the center position inside the fixed barrel (12), and stirring rods (9) are symmetrically fixedly arranged on both sides of the bottom end of the rotating rod (8).

6. The preparation device according to claim 5, characterized in that: A scraper (10) is fixedly arranged between one end of the stirring rod (9) on the same side, and the scraper (10) is in close contact with the inner wall of the mixing barrel (1). A bottom bin (6) is opened inside the bottom end of the mixing barrel (1), and a servo motor (7) is fixedly arranged on the top of the bottom bin (6). The output shaft of the servo motor (7) is fixedly connected to the bottom end of the rotating rod (8).

7. The preparation device according to claim 6, characterized in that: A disc (11) is fixedly arranged between the fixed cylinder (12) and the stirring rod (9) on the outer side of the rotating rod (8); a main material inlet (2) and a water inlet (3) are respectively fixedly arranged at an angle on both sides of the top of the mixing cylinder (1); the bottom ends of the main material inlet (2) and the water inlet (3) are respectively arranged above the two ends of the disc (11); and a discharge port (4) is opened on one side of the bottom end of the mixing cylinder (1).

8. The preparation device according to claim 4, characterized in that: A discharge pipe is fixedly arranged at the bottom of the inner cavity (16) corresponding to the bottom of the fixed cylinder (12), and a one-way valve (20) is fixedly arranged on the discharge pipe. A spring (19) is fixedly arranged between the top of the piston plate (17) and the top wall of the inner cavity (16), and the spring (19) is sleeved on the outside of the sliding tube (18). A one-way valve (20) is fixedly arranged above the top end of the sliding tube (18) corresponding to the extrusion plate (26). Fixed tubes (27) are fixedly arranged on both sides of the top end of the mixing cylinder (1) at positions corresponding to the sliding tube (18), and the top end of the sliding tube (18) is slidably arranged inside the fixed tube (27).

9. The preparation device according to claim 8, characterized in that: Through holes (30) are symmetrically provided inside the two ends of the fixed cover (13); the fixed tube (27) is fixedly connected to the through holes (30); the limit rod (29) is installed at the central position inside the fixed cover (13) for limited rotation; a limit mechanism is provided between the rotating cover (14) and the fixed cover (13); the limit mechanism is a clamping rod (28); the clamping rod (28) is in the shape of a "T" shape; a limit spring is fixedly provided between the outer side of one end of the clamping rod (28) and the inner wall of the fixed cover (13); the clamping rod (28) is symmetrically slidably provided inside the four ends of the fixed cover (13); one end of the clamping rod (28) is in the shape of an arc; one end of the clamping rod (28) is clamped inside the inner wall of the rotating cover (14).

10. The preparation device according to claim 5, characterized in that: The main gear (21) is fixedly arranged at the top end of the rotating rod (8); fixed plates (24) are symmetrically fixedly arranged on both sides of the main gear (21) corresponding to the inner sides of the fixed cylinder (12); a shaft (22) is rotatably arranged inside the top end of the fixed plate (24); a side gear (23) is fixedly arranged at one end of the shaft (22); the side gear (23) and the main gear (21) are meshed with each other; and the eccentric wheel (25) is fixedly mounted on the other end of the shaft (22).

Images