Cement raw material calcining device and method based on high-strength sulphoaluminate cement

Abstract

The invention belongs to the technical field of cement production, and particularly relates to a cement raw material calcining device and method based on high-strength sulphoaluminate cement. The top end of the preheating furnace fixedly communicates with a feeding funnel; the preheating mechanism is arranged in the preheating furnace; the high-temperature furnace is communicated with the preheating furnace; the stirring mechanism is arranged in the high-temperature furnace; the cooling furnace is communicated with the high-temperature furnace, and the bottom end of the cooling furnace is fixedly communicated with a discharging pipe through a discharging funnel; and the heat exchange mechanism is arranged in the cooling furnace and communicates with the preheating mechanism. The device can recover the heat of the cement clinker and preheat the cement raw material by using the recovered heat, so that the energy waste is avoided, and the cost input in the cement production process is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of cement production, and in particular relates to a cement raw material calcining device and method based on high-strength sulphoaluminate cement. Background Art

[0002] Cement: Powdered hydraulic inorganic cementitious material. After adding water and stirring, it becomes a slurry, which can harden in the air or in water, and can firmly bond sand, stone and other materials together. It is an indispensable material in the construction industry. Most of the existing cement raw material calcining devices need to preheat the raw material through a preheater before calcining, but most of the raw material preheating effects are not perfect, and the raw material cannot be fully preheated, which easily causes waste of resources and affects the calcination effect. At the same time, the raw material becomes high-temperature clinker after calcination, which needs to be cooled and discharged. However, when the high-temperature clinker is cooled, the heat loss generated is relatively serious. The high-temperature heat recovery generated during cooling in the market is not perfect, and it cannot be reasonably recycled, resulting in waste of resources.

[0003] Therefore, it is necessary to design a cement raw material calcining device and method based on high-strength sulphoaluminate cement to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a cement raw material calcining device and method based on high-strength sulphoaluminate cement, so as to solve the above-mentioned problems and achieve the purpose of recycling and reusing the heat of cement clinker.

[0005] To achieve the above object, the present invention provides the following scheme: a cement raw material calcining device based on high-strength sulphoaluminate cement, comprising:

[0006] Preheating furnace; the top of the preheating furnace is fixedly connected with a feeding funnel;

[0007] A preheating mechanism, wherein the preheating mechanism is arranged in the preheating furnace;

[0008] A high temperature furnace, the high temperature furnace being in communication with the preheating furnace;

[0009] A stirring mechanism, wherein the stirring mechanism is arranged in the high-temperature furnace;

[0010] A cooling furnace, the cooling furnace is connected to the high-temperature furnace, and the bottom end of the cooling furnace is fixedly connected to a discharge pipe through a discharge funnel;

[0011] A heat exchange mechanism is disposed in the cooling furnace and is communicated with the preheating mechanism.

[0012] Preferably, the heat exchange mechanism includes a circulating water pump, which is fixedly connected to the bottom of the outer side wall of the cooling furnace through a support plate, the water outlet of the circulating water pump is fixedly connected to one end of a connecting water pipe, the other end of the connecting water pipe is fixedly connected to a heat exchange part, the heat exchange part is fixedly connected to the inner side wall of the cooling furnace, the top of the heat exchange part on a side away from the connecting water pipe is fixedly connected to one end of a water outlet pipe, the other end of the water outlet pipe is fixedly connected to the preheating mechanism, the water inlet of the circulating water pump is fixedly connected to one end of a return water pipe, and the other end of the return water pipe is fixedly connected to the preheating mechanism.

[0013] Preferably, the heat exchange part includes a plurality of coaxially arranged heat dissipation rings, a cooling liquid cavity is opened inside the heat dissipation ring, the heat dissipation ring located on the outside is connected with the connecting water pipe and the water outlet pipe, the heat dissipation ring located on the outside is fixedly connected to the inner wall of the cooling furnace through a fixing rod, any two adjacent heat dissipation rings located on the inside are fixedly connected through an intermediate pipe, and a gap is left between the heat dissipation ring located on the outside and the inner wall of the cooling furnace and between any two adjacent heat dissipation rings located on the inside, and the gap is used for cement material to pass through.

[0014] Preferably, a vibrating screen material part is arranged above the heat exchange part, and the vibrating screen material part includes a plurality of reciprocating motors, the reciprocating motors are fixedly connected to the top end of the outer wall of the cooling furnace, the output shaft of the reciprocating motor is fixedly connected to one end of the second connecting shaft, the other ends of the plurality of second connecting shafts are commonly fixedly connected to a sieve plate, the sieve plate is in sliding contact with the inner wall of the cooling furnace, a plurality of evenly arranged through holes are opened on the sieve plate, a fixing ring is arranged between the sieve plate and the heat exchange part, the fixing ring is fixedly connected to the inner wall of the cooling furnace, a plurality of springs are fixedly connected to the top end of the fixing ring, the plurality of springs are evenly spaced along the circumference of the fixing ring, and the other end of the spring is fixedly connected to the bottom end of the sieve plate.

[0015] Preferably, the preheating mechanism includes four first heat dissipation tubes, the first heat dissipation tube located at the bottom is fixedly connected to the water outlet pipe, the first heat dissipation tube located at the top is fixedly connected to the water return pipe, two first heat dissipation tubes located on the same horizontal plane are fixedly connected through a third heat dissipation tube, two first heat dissipation tubes located on the same vertical plane are fixedly connected through a second heat dissipation tube, a plurality of fifth heat dissipation tubes are fixedly connected between the two third heat dissipation tubes, a plurality of fourth heat dissipation tubes are fixedly connected between the two second heat dissipation tubes, and the fourth heat dissipation tube is connected to the fifth heat dissipation tube.

[0016] Preferably, one end of an air pipe is fixedly connected to the middle of the top end of the high-temperature furnace, and the other end of the air pipe is located at the bottom inner side of the preheating furnace.

[0017] Preferably, the stirring mechanism includes a second motor, which is fixedly connected to the outer bottom end of the high-temperature furnace, and the output shaft of the second motor is fixedly connected to a rotating shaft, and the outer side wall of the rotating shaft is fixedly connected to a plurality of stirring rods, which are horizontally arranged, and the plurality of stirring rods are equally spaced along the circumferential and axial directions of the outer side wall of the rotating shaft.

[0018] Preferably, one end of a first connecting pipe is fixedly connected to the bottom of the preheating furnace side wall, and the other end of the first connecting pipe is fixedly connected to the top of the high-temperature furnace side wall. A first motor is fixedly connected to the top of the outer wall of the high-temperature furnace away from the first connecting pipe, and the output shaft of the first motor is fixedly connected to one end of a horizontally arranged first connecting shaft, and the other end of the first connecting shaft is fixedly connected to a first auger, and the first auger is rotatably arranged in the first connecting pipe.

[0019] Preferably, one end of a second connecting pipe is fixedly connected to the bottom of the side wall of the high-temperature furnace away from the preheating furnace, and the other end of the second connecting pipe is fixedly connected to the middle of the top of the cooling furnace. The second connecting pipe is L-shaped, and a third motor is fixedly connected to the outer wall of the vertical section of the second connecting pipe. The output shaft of the third motor is fixedly connected to a second auger, and the second auger is rotatably arranged in the horizontal section of the second connecting pipe.

[0020] The method for using a cement raw material calcining device based on high-strength sulphoaluminate cement comprises the following steps:

[0021] S1. Adding cement raw material into the preheating furnace through the feeding funnel, and preheating the cement raw material through the preheating mechanism;

[0022] S2, the preheated cement raw material enters the high temperature furnace for high temperature calcination to form cement clinker, and the cement raw material is stirred by a stirring mechanism during the high temperature calcination process;

[0023] S3. The cement clinker enters the cooling furnace, exchanges heat with the heat exchange mechanism, is cooled and discharged from the cooling furnace, and the heat exchange mechanism transfers the heat after the heat exchange to the preheating mechanism to preheat the cement raw material.

[0024] Compared with the prior art, the present invention has the following advantages and technical effects:

[0025] The present invention can preheat the cement raw material put into the preheating furnace by means of a preheating mechanism arranged in the preheating furnace. The preheated cement raw material enters the high-temperature furnace for high-temperature calcination. During the high-temperature calcination, the cement raw material is stirred by the stirring mechanism to ensure the calcination effect. The high-temperature flue gas generated during the calcination process returns to the preheating furnace to preheat the cement raw material. The cement raw material is calcined at high temperature to form cement clinker. The cement clinker is discharged from the high-temperature furnace into the cooling furnace for cooling. During the cooling process, the heat exchange mechanism collects the heat of the cement clinker to cool the cement clinker. The heat exchange mechanism transfers the collected heat to the preheating mechanism to preheat the cement raw material. The preheating effect of the cement raw material is improved by means of two preheating methods. The cooled cement clinker is discharged from the cooling furnace through a discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the internal structure of the preheating furnace of the present invention;

[0030] Figure 4 This is a schematic diagram of the internal structure of the high temperature furnace of the present invention;

[0031] Figure 5 It is a schematic diagram of the internal structure of the cooling furnace of the present invention.

[0032] Among them, 1. preheating furnace; 2. high temperature furnace; 3. cooling furnace; 4. feeding funnel; 5. discharge funnel; 6. discharge pipe; 7. first connecting pipe; 8. second connecting pipe; 9. circulating water pump; 10. support plate; 11. return pipe; 12. outlet pipe; 13. air pipe; 14. first motor; 15. second motor; 16. third motor; 17. reciprocating motor; 18. first heat dissipation pipe; 19. second heat dissipation pipe; 20. third heat dissipation pipe; 21. fourth heat dissipation pipe; 22. fifth heat dissipation pipe; 23. first connecting shaft; 24. first auger; 25. rotating shaft; 26. stirring rod; 27. second auger; 28. second connecting shaft; 29. ​​sieve plate; 30. through hole; 31. spring; 32. fixing ring; 33. connecting water pipe; 34. heat dissipation ring; 35. intermediate pipe; 36. fixing rod. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] Reference Figures 1 to 5 As shown, the present invention provides a cement raw material calcining device based on high-strength sulphoaluminate cement, comprising

[0036] Preheating furnace 1; the top of the preheating furnace 1 is fixedly connected with a feeding funnel 4;

[0037] A preheating mechanism, the preheating mechanism is arranged in the preheating furnace 1;

[0038] A high temperature furnace 2, the high temperature furnace 2 is connected to the preheating furnace 1;

[0039] A stirring mechanism, the stirring mechanism is arranged in the high temperature furnace 2;

[0040] A cooling furnace 3, the cooling furnace 3 is connected to the high temperature furnace 2, and the bottom of the cooling furnace 3 is fixedly connected to a discharge pipe 6 through a discharge funnel 5;

[0041] The heat exchange mechanism is arranged in the cooling furnace 3 and is connected to the preheating mechanism.

[0042] By means of the preheating mechanism arranged in the preheating furnace 1, the cement raw material put into the preheating furnace 1 can be preheated, and the preheated cement raw material enters the high-temperature furnace 2 for high-temperature calcination. During the high-temperature calcination, the cement raw material is stirred by the stirring mechanism to ensure the calcination effect. The high-temperature flue gas generated during the calcination process returns to the preheating furnace 1 to preheat the cement raw material. After high-temperature calcination, the cement raw material forms cement clinker, which is discharged from the high-temperature furnace 2 into the cooling furnace 3 for cooling. During the cooling process, the heat exchange mechanism collects the heat of the cement clinker to cool the cement clinker. The heat exchange mechanism transfers the collected heat to the preheating mechanism to preheat the cement raw material. The preheating effect of the cement raw material is improved by the two preheating methods, and the cooled cement clinker is discharged from the cooling furnace 3 through the discharge pipe 6.

[0043] A further optimized solution is provided, wherein the heat exchange mechanism comprises a circulating water pump 9, which is fixedly connected to the bottom of the outer wall of the cooling furnace 3 through a support plate 10, a water outlet of the circulating water pump 9 is fixedly connected to one end of a connecting water pipe 33, and the other end of the connecting water pipe 33 is fixedly connected to a heat exchange part, the heat exchange part is fixedly connected to the inner wall of the cooling furnace 3, and the top of the heat exchange part on a side away from the connecting water pipe 33 is fixedly connected to one end of a water outlet pipe 12, and the other end of the water outlet pipe 12 is fixedly connected to the preheating mechanism, and a water inlet of the circulating water pump 9 is fixedly connected to one end of a return water pipe 11, and the other end of the return water pipe 11 is fixedly connected to the preheating mechanism.

[0044] A further optimized solution is that the heat exchange part includes a plurality of coaxially arranged heat dissipation rings 34, wherein a cooling liquid cavity is opened inside the heat dissipation ring 34, the heat dissipation ring 34 located on the outside is connected with the connecting water pipe 33 and the water outlet pipe 12, the heat dissipation ring 34 located on the outside is fixedly connected to the inner wall of the cooling furnace 3 through a fixing rod 36, and any two adjacent heat dissipation rings 34 located on the inside are fixedly connected through an intermediate pipe 35, and there is a gap between the heat dissipation ring 34 located on the outside and the inner wall of the cooling furnace 3 and between any two adjacent heat dissipation rings 34 located on the inside, and the gap is used for cement material to pass through.

[0045] The heat dissipation ring 34 is filled with a coolant, which can be cooling water or cooling oil. When the cement clinker is cooled, the coolant in the heat dissipation ring 34 is in a low-temperature state. At this time, the high-temperature cement clinker entering the cooling furnace 3 passes through the gap between the two heat dissipation rings 34 and between the heat dissipation ring 34 and the inner wall of the cooling furnace 3 during the falling process, and generates heat exchange with the coolant. The temperature of the coolant rises and the temperature of the cement clinker drops. The cement clinker after the temperature drops is discharged from the cooling furnace 3 through the discharge pipe 6, and the high-temperature coolant in the heat dissipation ring 34 enters the preheating mechanism through the outlet pipe 12 under the power drive of the circulating water pump 9 to preheat the cement raw material. After preheating, the temperature of the coolant decreases, and then returns to the heat dissipation ring 34 through the return pipe 11 to continue cooling the cement clinker.

[0046] A further optimized solution is provided above the heat exchange portion. The vibrating screen portion includes a plurality of reciprocating motors 17. The reciprocating motors 17 are fixedly connected to the top end of the outer wall of the cooling furnace 3. The output shaft of the reciprocating motor 17 is fixedly connected to one end of the second connecting shaft 28. The other ends of the plurality of second connecting shafts 28 are commonly fixedly connected to a sieve plate 29. The sieve plate 29 is in sliding contact with the inner wall of the cooling furnace 3. A plurality of evenly arranged through holes 30 are provided on the sieve plate 29. A fixing ring 32 is provided between the sieve plate 29 and the heat exchange portion. The fixing ring 32 is fixedly connected to the inner wall of the cooling furnace 3. One end of a plurality of springs 31 is fixedly connected to the top end of the fixing ring 32. The plurality of springs 31 are evenly spaced along the circumference of the fixing ring 32. The other end of the spring 31 is fixedly connected to the bottom end of the sieve plate 29.

[0047] After the cement clinker enters the cooling furnace 3 through the second connecting pipe 8, it falls on the sieve plate 29. The reciprocating motor 17 drives the sieve plate 29 to vibrate up and down continuously. During the vibration of the sieve plate 29, the cement clinker is dispersed, and then continues to fall through the through hole 30, and evenly exchanges heat with the coolant through the gap between the heat dissipation rings 34. The spring 31 improves the vibration effect of the sieve plate 29.

[0048] A further optimized solution is provided, wherein the preheating mechanism comprises four first heat dissipation tubes 18, wherein a first heat dissipation tube 18 located at a lower position is fixedly connected to the water outlet pipe 12, a first heat dissipation tube 18 located at an upper position is fixedly connected to the water return pipe 11, two first heat dissipation tubes 18 located on the same horizontal plane are fixedly connected to each other through a third heat dissipation tube 20, two first heat dissipation tubes 18 located on the same vertical plane are fixedly connected to each other through a second heat dissipation tube 19, a plurality of fifth heat dissipation tubes 22 are fixedly connected between the two third heat dissipation tubes 20, a plurality of fourth heat dissipation tubes 21 are fixedly connected between the two second heat dissipation tubes 19, and the fourth heat dissipation tube 21 is connected to the fifth heat dissipation tube 22.

[0049] The high-temperature coolant enters the first heat dissipation tube 18 located below through the water outlet pipe 12, and then gradually enters the second heat dissipation tube 19, the third heat dissipation tube 20, the fourth heat dissipation tube 21, and the fifth heat dissipation tube 22 and fills the inside thereof. The first heat dissipation tube 18, the second heat dissipation tube 19, the third heat dissipation tube 20, the fourth heat dissipation tube 21, and the fifth heat dissipation tube 22 are evenly distributed in the preheating furnace 1 to preheat the cement raw material put into the preheating furnace 1. The temperature of the preheated coolant decreases and enters the return water pipe 11 through the first heat dissipation tube 18 located above, and then returns to the heat dissipation ring 34.

[0050] According to a further optimization scheme, one end of an air pipe 13 is fixedly connected to the middle of the top of the high-temperature furnace 2 , and the other end of the air pipe 13 is located at the bottom of the inner side of the preheating furnace 1 .

[0051] The high-temperature flue gas generated during the high-temperature calcination of cement raw materials by the high-temperature furnace 2 enters the preheating furnace 1 through the air pipe 13, and the auxiliary preheating mechanism preheats the cement raw materials to improve the preheating effect. During the preheating process, the solid particles in the high-temperature flue gas are retained in the cement raw materials, and the filtered gas is discharged into the atmosphere without causing pollution.

[0052] A further optimized solution is that the stirring mechanism includes a second motor 15, the second motor 15 is fixedly connected to the outer bottom end of the high-temperature furnace 2, the output shaft of the second motor 15 is fixedly connected to a rotating shaft 25, and the outer side wall of the rotating shaft 25 is fixedly connected to a plurality of stirring rods 26, the stirring rods 26 are horizontally arranged, and the plurality of stirring rods 26 are equally spaced along the circumferential and axial directions of the outer side wall of the rotating shaft 25.

[0053] To further optimize the solution, one end of the first connecting pipe 7 is fixedly connected to the bottom of the side wall of the preheating furnace 1, and the other end of the first connecting pipe 7 is fixedly connected to the top of the side wall of the high-temperature furnace 2. A first motor 14 is fixedly connected to the top of the outer wall of the high-temperature furnace 2 away from the first connecting pipe 7. The output shaft of the first motor 14 is fixedly connected to one end of a horizontally arranged first connecting shaft 23, and the other end of the first connecting shaft 23 is fixedly connected to a first auger 24, which is rotatably arranged in the first connecting pipe 7.

[0054] After the cement raw material is preheated in the preheating furnace 1, the first motor 14 works to drive the first auger 24 to rotate. During the rotation of the first auger 24, the cement raw material is discharged into the high-temperature furnace 2 for high-temperature calcination.

[0055] A further optimized solution is that one end of a second connecting pipe 8 is fixedly connected to the bottom of the side wall of the high-temperature furnace 2 away from the preheating furnace 1, and the other end of the second connecting pipe 8 is fixedly connected to the middle of the top of the cooling furnace 3. The second connecting pipe 8 is L-shaped, and the outer wall of the vertical section of the second connecting pipe 8 is fixedly connected to the third motor 16, and the output shaft of the third motor 16 is fixedly connected to the second auger 27, and the second auger 27 is rotatably arranged in the horizontal section of the second connecting pipe 8.

[0056] After high-temperature calcination, the cement raw material forms cement clinker. The third motor 16 drives the second auger 27 to rotate. During the rotation of the second auger 27, the high-temperature cement clinker is discharged into the cooling furnace 3 for cooling.

[0057] The method for using a cement raw material calcining device based on high-strength sulphoaluminate cement comprises the following steps:

[0058] S1, adding cement raw material into the preheating furnace 1 through the feeding funnel 4, and preheating the cement raw material through the preheating mechanism;

[0059] The high-temperature coolant enters the first heat dissipation tube 18, the second heat dissipation tube 19, the third heat dissipation tube 20, the fourth heat dissipation tube 21, and the fifth heat dissipation tube 22 to preheat the cement raw material. At the same time, the high-temperature flue gas generated during the high-temperature calcination process of the high-temperature furnace 2 also enters the preheating furnace 1 to preheat the cement raw material.

[0060] S2, the preheated cement raw material enters the high temperature furnace 2 for high temperature calcination to form cement clinker, and the cement raw material is stirred by a stirring mechanism during the high temperature calcination process;

[0061] During the high-temperature furnace 2 calcining the cement raw material at high temperature, the second motor 15 drives the rotating shaft 25 and the stirring rod 26 to rotate to stir the cement raw material, thereby improving the calcination effect.

[0062] S3, the cement clinker enters the cooling furnace 3, and the cement clinker exchanges heat with the heat exchange mechanism, is cooled and discharged from the cooling furnace 3, and the heat exchange mechanism transfers the heat after the heat exchange to the preheating mechanism to preheat the cement raw material.

[0063] After the high-temperature cement clinker enters the cooling furnace 3, it passes through the gaps between the heat dissipation rings 34 evenly under the vibrating screening action of the sieve plate 29, and produces heat exchange with the low-temperature coolant in the heat dissipation ring 34. The coolant transfers the heat obtained by the heat exchange to the preheating furnace 1 to preheat the cement raw material, and the cooled cement clinker is discharged from the cooling furnace 3.

[0064] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0065] The embodiments described above are only descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope of the present invention.

Claims

1. A cement raw material calcining device based on high-strength sulphoaluminate cement, characterized in that: include A preheating furnace (1); the top of the preheating furnace (1) is fixedly connected to a feeding funnel (4); A preheating mechanism, the preheating mechanism being arranged in the preheating furnace (1); A high temperature furnace (2), the high temperature furnace (2) being connected to the preheating furnace (1); a stirring mechanism, the stirring mechanism being arranged in the high-temperature furnace (2); A cooling furnace (3), the cooling furnace (3) being connected to the high-temperature furnace (2), and the bottom end of the cooling furnace (3) being fixedly connected to a discharge pipe (6) via a discharge funnel (5); A heat exchange mechanism is arranged in the cooling furnace (3) and is connected to the preheating mechanism.

2. The cement raw material calcining device based on high-strength sulphoaluminate cement according to claim 1, characterized in that: The heat exchange mechanism comprises a circulating water pump (9), the circulating water pump (9) being fixedly connected to the bottom of the outer wall of the cooling furnace (3) through a support plate (10), the water outlet of the circulating water pump (9) being fixedly connected to one end of a connecting water pipe (33), the other end of the connecting water pipe (33) being fixedly connected to a heat exchange part, the heat exchange part being fixedly connected to the inner wall of the cooling furnace (3), the top end of the heat exchange part away from the connecting water pipe (33) being fixedly connected to one end of a water outlet pipe (12), the other end of the water outlet pipe (12) being fixedly connected to the preheating mechanism, the water inlet of the circulating water pump (9) being fixedly connected to one end of a return water pipe (11), the other end of the return water pipe (11) being fixedly connected to the preheating mechanism.

3. The cement raw material calcining device based on high-strength sulphoaluminate cement according to claim 2, characterized in that: The heat exchange part comprises a plurality of coaxially arranged heat dissipation rings (34), each of which has a cooling liquid cavity therein; the heat dissipation ring (34) located on the outside is connected to the connecting water pipe (33) and the water outlet pipe (12); the heat dissipation ring (34) located on the outside is fixedly connected to the inner wall of the cooling furnace (3) via a fixing rod (36); any two adjacent heat dissipation rings (34) located on the inside are fixedly connected via an intermediate pipe (35); a gap is left between the heat dissipation ring (34) located on the outside and the inner wall of the cooling furnace (3) and between any two adjacent heat dissipation rings (34) located on the inside, and the gap is used for cement material to pass through.

4. The cement raw material calcining device based on high-strength sulphoaluminate cement according to claim 2, characterized in that: A vibrating screening section is arranged above the heat exchange section, and the vibrating screening section comprises a plurality of reciprocating motors (17), the reciprocating motors (17) are fixedly connected to the top end of the outer wall of the cooling furnace (3), the output shaft of the reciprocating motor (17) is fixedly connected to one end of a second connecting shaft (28), the other ends of the plurality of second connecting shafts (28) are commonly fixedly connected to a sieve plate (29), the sieve plate (29) is in sliding contact with the inner wall of the cooling furnace (3), the sieve plate (29) is provided with a plurality of evenly arranged through holes (30), a fixing ring (32) is arranged between the sieve plate (29) and the heat exchange section, the fixing ring (32) is fixedly connected to the inner wall of the cooling furnace (3), the top end of the fixing ring (32) is fixedly connected to one end of a plurality of springs (31), the plurality of springs (31) are arranged at equal intervals along the circumference of the fixing ring (32), and the other end of the spring (31) is fixedly connected to the bottom end of the sieve plate (29).

5. The cement raw material calcining device based on high-strength sulphoaluminate cement according to claim 2, characterized in that: The preheating mechanism comprises four first radiating tubes (18), wherein a first radiating tube (18) located at a lower position is fixedly connected to the water outlet tube (12), a first radiating tube (18) located at an upper position is fixedly connected to the water return tube (11), two first radiating tubes (18) located on the same horizontal plane are fixedly connected to each other via a third radiating tube (20), two first radiating tubes (18) located on the same vertical plane are fixedly connected to each other via a second radiating tube (19), a plurality of fifth radiating tubes (22) are fixedly connected between the two third radiating tubes (20), a plurality of fourth radiating tubes (21) are fixedly connected between the two second radiating tubes (19), and the fourth radiating tubes (21) are connected to the fifth radiating tubes (22).

6. The cement raw material calcining device based on high-strength sulphoaluminate cement according to claim 1, characterized in that: One end of an air pipe (13) is fixedly connected to the middle of the top of the high-temperature furnace (2), and the other end of the air pipe (13) is located at the bottom of the inner side of the preheating furnace (1).

7. The cement raw material calcining device based on high-strength sulphoaluminate cement according to claim 1, characterized in that: The stirring mechanism comprises a second motor (15), the second motor (15) is fixedly connected to the outer bottom end of the high-temperature furnace (2), the output shaft of the second motor (15) is fixedly connected to a rotating shaft (25), the outer wall of the rotating shaft (25) is fixedly connected to a plurality of stirring rods (26), the stirring rods (26) are arranged horizontally, and the plurality of stirring rods (26) are arranged at equal intervals along the circumferential and axial directions of the outer wall of the rotating shaft (25).

8. The cement raw material calcining device based on high-strength sulphoaluminate cement according to claim 1, characterized in that: One end of a first connecting pipe (7) is fixedly connected to the bottom of the side wall of the preheating furnace (1), and the other end of the first connecting pipe (7) is fixedly connected to the top of the side wall of the high-temperature furnace (2). A first motor (14) is fixedly connected to the top of the outer wall of the high-temperature furnace (2) away from the first connecting pipe (7). The output shaft of the first motor (14) is fixedly connected to one end of a first connecting shaft (23) arranged horizontally, and the other end of the first connecting shaft (23) is fixedly connected to a first auger (24), and the first auger (24) is rotatably arranged in the first connecting pipe (7).

9. The cement raw material calcining device based on high-strength sulphoaluminate cement according to claim 1, characterized in that: One end of a second connecting pipe (8) is fixedly connected to the bottom of the side wall of the high-temperature furnace (2) away from the preheating furnace (1), and the other end of the second connecting pipe (8) is fixedly connected to the middle of the top end of the cooling furnace (3). The second connecting pipe (8) is L-shaped, and a third motor (16) is fixedly connected to the outer wall of the vertical section of the second connecting pipe (8). The output shaft of the third motor (16) is fixedly connected to a second auger (27), and the second auger (27) is rotatably arranged in the horizontal section of the second connecting pipe (8).

10. A method for using the cement raw material calcining device based on high-strength sulphoaluminate cement according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, adding cement raw material into the preheating furnace (1) through the feeding funnel (4), and preheating the cement raw material through the preheating mechanism; S2, the preheated cement raw material enters the high temperature furnace (2) for high temperature calcination to form cement clinker, and the cement raw material is stirred by a stirring mechanism during the high temperature calcination process; S3, the cement clinker enters the cooling furnace (3), exchanges heat with the heat exchange mechanism, is cooled and discharged from the cooling furnace (3), and the heat exchange mechanism transfers the heat after the heat exchange to the preheating mechanism to preheat the cement raw material.

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