CN214572066U

CN214572066U - Broken waste heat recovery device of high temperature slag revolving bed

Info

Publication number: CN214572066U
Application number: CN202120570735.3U
Authority: CN
Inventors: 吴龙; 彭犇; 郝以党; 李惊涛; 张宇; 胡天麒; 王会刚; 孙健; 翟慎安; 张培才; 吴跃东; 岳昌盛; 闾文; 张延平; 潘颖; 陈满科
Original assignee: Central Research Institute of Building and Construction Co Ltd MCC Group; MCC Energy Saving and Environmental Protection Co Ltd
Current assignee: Central Research Institute of Building and Construction Co Ltd MCC Group; MCC Energy Saving and Environmental Protection Co Ltd
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-11-02
Anticipated expiration: 2031-03-19

Abstract

The utility model provides a broken waste heat recovery device of high temperature slag revolving bed, including liquid slag ladle (1), slag pouring machine (2), revolving bed (5), pull out sediment machine (6), circulating fan (7), tuber pipe (8), heat exchanger (9), steam pipe (10), generator (11), solid-state slag ladle (14), what liquid slag ladle (1) could be toppled over establishes on the sediment machine (2) that falls, and revolving bed (5) top is equipped with pulls out sediment machine (6), and revolving bed (5), heat exchanger (9) are connected through tuber pipe (8) in circulating fan (7), and generator (11) are connected through steam pipe (9) in heat exchanger (9), revolving bed (5) pivoted is established between sediment machine (2) and circulating fan (7), and the slag is arranged through revolving bed (5) cooling. The utility model discloses having solved the slag treatment process by a wide margin and having discharged a difficult problem, having reduced public subsidiary facility investments such as water, dust removal by a wide margin, effectively reduced slag production operation cost, improved system's income.

Description

Broken waste heat recovery device of high temperature slag revolving bed

Technical Field

The utility model relates to a slag treatment technical field, especially a device that carries out broken waste heat recovery of revolving bed to high temperature melting slag.

Background

In recent years, the annual steel yield of China exceeds 8 hundred million tons, which accounts for about 120-140 kg of steel slag generated by producing one ton of steel, and the annual steel slag generation amount of China exceeds 1 million tons. The steel slag contains two types of resources, namely iron metal resources and inorganic materials such as calcium silicate, and has the material property of resource utilization. For a long time, iron ores in China mainly depend on imports, and resources are very short. The steel slag in China is expected to recover nearly 2000 ten thousand tons of iron resources, and inorganic materials can reach more than 8000 ten thousand tons, so that the method has great significance in resource recovery value.

The high-efficiency recovery of metal iron and inorganic material resources in the steel slag is to perform crushing separation firstly and then realize the separation of the two materials by adopting magnetic separation and other modes, thereby obtaining targeted resource utilization. The steel slag pretreatment process is a precondition for steel slag crushing and magnetic separation treatment, and realizes more efficient crushing, screening and magnetic separation of the steel slag through pretreatment under a high temperature condition.

The prior steel slag pretreatment process comprises production processes such as a hot stuffy method, a hot splashing method, a roller method, a wind quenching method and the like, wherein the hot splashing method has the problems of backward production mode, simple and extensive treatment process, serious environmental pollution, low metal resource recovery rate and the like, and is required to be eliminated as soon as possible; the roller method is only suitable for liquid steel slag with good fluidity, the treatment rate of the steel slag is less than 50%, the equipment operation cost is high, the failure is high, and the roller method is only used for a few steel enterprises in a steel system at present; the air quenching method adopts large air volume to blow off and cool the liquid steel slag into fine particles, is only suitable for treating the liquid steel slag, has low recovery rate of steel metal iron resources, and only one set of air quenching equipment is provided for domestic horse steel.

The domestic main steel slag treatment method is a hot-disintegrating method, and the process has a series of advantages of wide adaptability, good steel slag pulverization effect after hot disintegration, good slag-iron separation effect, high metal iron recovery rate, qualified tailing stability and the like. The existing hot-sealing method is divided into a pool type hot-sealing process and a pressure hot-sealing process. The tank type hot stuffy method adopts a process method of engineering mechanized operation, namely an excavator is used for slagging off and crushing the high-temperature steel slag poured into the hot stuffy tank, and the equipment level and the environmental emission need to be further improved. The crushing method has the advantages of high equipment and automation degree and the like by adopting a mechanical rolling crusher to crush the high-temperature steel slag in a pressing and hot stuffiness mode, but the investment is relatively high, the tightness is poor, and the waste heat recovery cannot be carried out by adopting a water cooling mode in the crushing process.

The slag temperature of the steel slag reaches 1600 ℃, the heat value of each ton of slag exceeds 50kg of standard coal, and a large amount of waste heat resources are contained in the slag. The annual output of steel slag in China exceeds 1 hundred million tons, if all the waste heat resources are recycled, the newly increased economic benefit can reach billions of yuan every year, and the method has huge economic market space. At present, the waste heat recovery of high-temperature slag such as metallurgical slag is still often in a test research stage, and the complete resource utilization of two slag heat resources is often difficult to realize. A large number of laboratory and industrial pilot-scale test researches are carried out at home and abroad aiming at the recovery of the waste heat of the air-quenched steel slag, but the method is improper, the recovery rate of iron resources is low, the production is discontinuous, and the comprehensive economic benefit is poor, so that the production and the application cannot be realized. In addition, smelting slag is adopted to be cooled to generate steam or hot water for heat exchange utilization, but the waste heat utilization rate is low, and the economic condition of industrial operation is not met.

Aiming at the problems of large occupied space, high system investment, incapability of recycling waste heat and the like of the existing steel slag treatment process and equipment, a novel steel slag treatment process is urgently needed to be developed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a steel slag rotating bed crushing method and equipment, which realizes the complete recycling of two resources of 'slag heat' while carrying out crushing pretreatment on high-temperature steel slag.

The utility model provides a broken waste heat recovery device at bottom of high temperature slag commentaries on classics, including liquid slag pot, the sediment machine of falling, revolving bed, pull out the sediment machine, circulating fan, tuber pipe, heat exchanger, steam pipe, generator, solid-state slag pot, what liquid slag pot can be toppled over establishes on the sediment machine of falling, and the revolving bed top is equipped with pulls out the sediment machine, and circulating fan passes through the tuber pipe and connects revolving bed, heat exchanger, and the heat exchanger passes through the steam pipe and connects the generator, the revolving bed pivoted is established between sediment machine and circulating fan of falling, and the sediment is arranged in the cooling of revolving bed to the slag.

Furthermore, the high-temperature slag in the liquid slag tank is processed into broken slag through a rotating bed, the broken slag is loaded into the solid slag tank through a slag discharge port, the rotating bed body is annular, and the circulating fan is arranged on an inner ring of the rotating bed.

Furthermore, the rotating bed comprises a slag pouring port, a slag discharging port, a diffusing cylinder, a closed cover, a crushing roller, a discharging roller, a material baffle plate, a rotating ring, a rotating wheel, a cushion layer, a material layer, a bottom bed, an air box, an ash bucket, an ash cleaning vehicle, a track and a grate bar, wherein the bottom bed is rotatably arranged between a main body at the lower part of the rotating bed and the closed cover at the upper part of the rotating bed, the air box, the ash bucket, the ash cleaning vehicle and the track at the lower part of the bottom bed are fixedly connected to the main body of the rotating bed from top to bottom in sequence, a circulating fan is connected with the air box through an air pipe, and a heat exchanger is connected with the closed cover through the air pipe.

Furthermore, the slag pouring port is arranged on the closed cover corresponding to the liquid slag tank, the diffusing cylinder penetrates through the closed cover, the side wall of the closed cover is provided with a slag discharging port, the crushing roller and the discharging roller are rotatably arranged on the upper portion of a base in the closed cover along the radial direction, the striker plate is arranged between the slag pouring port and the projection position of the slag discharging port, a cushion layer is arranged between the base and a material layer, the outer side of the base is provided with a rotating ring which is meshed with the rotating wheel, the base is provided with a grate bar corresponding to the position of the air box, and the driving rotation direction of the rotating wheel is in the same direction as the driving rotation direction of the crushing roller.

Further, the inner diameter of the deslagging port is 1000-2000mm, the inner diameter of the slag discharging port is 500-1200mm, a fireproof material with the thickness of 50-200mm is built on a steel structure inside the deslagging port, an inorganic heat-insulating material with the thickness of 50-150mm is arranged outside the slag discharging port, inorganic heat-insulating materials with the thickness of 50-150mm are arranged outside the air pipe, the heat exchanger and the steam pipe, and inorganic heat-insulating materials with the thickness of 50-150mm are arranged inside and outside the closed cover.

Further, the crushing roller realizes the rotation of positive and negative two directions through drive arrangement's motor, and forward rotation promotes slag to unloading the mouth direction motion, and reverse rotation promotes slag to pouring the mouth direction motion, the discharge roller is spiral ejection of compact structure, and the discharge roller is rotatory to promote slag to unloading the mouth direction motion.

Furthermore, the rotating wheel drives the rotating ring to drive the bottom bed to rotate, the rotating wheel realizes the rotation in the positive and negative directions through a motor of the driving device, the positive rotation drives the bottom bed to move towards the slag discharging opening, and the reverse rotation drives the bottom bed to move towards the slag pouring opening.

Furthermore, the bottom of the material baffle plate is arranged between the cushion layer and the material layer, the material layer steel slag is blocked by the material baffle plate, and the discharge roller pushes the steel slag to the slag discharge opening for discharging.

Furthermore, the diameter of the crushing roller and the discharge roller is 1000-2500mm, the width of the roller teeth is 50-300mm, 2-6 crushing rollers are uniformly distributed in the rotating bed, the material baffle plate is a steel structure baffle plate, and the thickness is 100-200 mm.

Furthermore, the cushion layer is made of large-particle steel slag, the mass percentage of the particle size of the steel slag is 10-50mm is more than 90%, the thickness of the cushion layer is 50-500mm, and the thickness of the material layer is 200-600 mm.

The utility model discloses a revolving bed is equipped as the broken core of high temperature slag cooling, adopts fixed broken rod to carry out the forced air cooling to high temperature slag to the high-efficient breakage of slag, adopts heat exchanger and generator to retrieve the electricity generation to high temperature slag waste heat. The high-temperature steel slag is automatically poured into a crushing bed through a slag pouring machine, and meanwhile, circulating cold air is introduced into the bottom of the crushing bed to cool the high-temperature liquid steel slag and convert the high-temperature liquid steel slag into a solidified state. The crushing roller rotates at a certain speed, and can crush the steel slag and realize the slag pushing function at the same time.

Meanwhile, a plurality of crushing rollers are arranged in the rotating bed, the crushing capacity of system equipment is high, the steel slag treatment efficiency is greatly improved, and waste heat recovery power generation can be carried out by obtaining high-temperature flue gas through air cooling heat exchange in the crushing process. The process equipment can realize 10-30kWh of power generation per ton of slag, has remarkable economic benefit of waste heat recovery, and has the advantages of high automation level of equipment, strong production continuity, high operation efficiency, small space occupation, low system investment, high waste heat recovery rate and the like.

Furthermore, the utility model discloses cancelled steel slag water cooling system device, adopted simple dry process dust removal mode to replace the wet process flue gas processing system that water-cooling technology leads to in the past, it is high to have degree of automation, and waste heat recovery and utilization rate is high, and the treatment effeciency is high, and the seal is good, and the space takes up an area of for a short time, and the system investment is low, and hot air circulation utilizes no advantage such as flue gas is arranged outward. The method and the device greatly improve the steel slag treatment equipment level, improve the steel slag treatment efficiency, break through the difficult problem of steel slag waste heat recycling, thoroughly solve the difficult problem of steel slag treatment process discharge, increase the comprehensive utilization benefit of the steel slag, greatly reduce public and auxiliary facility investment such as water and dust removal and effectively reduce the steel slag production operation cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic view of the whole high-temperature steel slag rotary bed crushing waste heat recovery device provided by the present invention;

FIG. 2 is a schematic top view of a device for recovering waste heat from crushing of a high-temperature steel slag revolving bed provided by the present invention;

FIG. 3 is a schematic cross-sectional view of a device for recovering waste heat from crushing of a high-temperature steel slag revolving bed according to the present invention;

FIG. 4 is a schematic cross-sectional view of a steel slag rotary bed bottom bed of the device for recovering the crushing waste heat of the high-temperature steel slag rotary bed provided by the present invention;

fig. 5 is a schematic plan view of a steel slag rotary bed bottom bed of the high-temperature steel slag rotary bed crushing waste heat recovery device provided by the utility model.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Fig. 1-5 show a device for recovering waste heat from a high-temperature steel slag rotating bed, as shown in the drawings, according to an embodiment of the present invention, there is provided a device for recovering waste heat from a high-temperature steel slag rotating bed, comprising: the device comprises a liquid slag tank 1, a slag pouring machine 2, high-temperature slag 3, a slag pouring opening 4, a rotating bed 5, a slag pulling machine 6, a circulating fan 7, an air pipe 8, a heat exchanger 9, a steam pipe 10, a generator 11, a slag discharging opening 12, broken slag 13, a solid slag tank 14 and a diffusing cylinder 15.

The liquid slag pot 1 is seated on the slag pouring machine 2; the high-temperature slag 3 is filled in the liquid slag tank 1; the slag pouring port 4 is arranged above the rotating bed 5 and below the liquid slag pot 1; the slag extractor 6 is arranged above the slag pouring port 4; the circulating fan 7 is connected with the rotating bed 5 and the heat exchanger 9 through an air pipe 8, and the heat exchanger 9 is connected with the generator 11 through a steam pipe 9; the slag discharging port 12 is arranged on the side wall of the rotating bed 5; the crushed slag 13 is loaded into a solid slag tank 14 through a slag discharge port 12; the diffusing cylinder 15 is arranged at the upper part of the rotating bed 5 and is used for releasing high-pressure gas in the rotating bed 5.

The rotating bed 5 comprises a slag pouring port 4, a slag discharging port 12, a diffusing cylinder 15, a closed cover 16, a crushing roller 17, a discharging roller 18, a material baffle plate 19, a rotating ring 20, a rotating wheel 21, a cushion layer 22, a material layer 23, a bottom bed 24, an air box 25, an ash bucket 26, an ash cleaning vehicle 27, a track 28 and a grate bar 29.

The slag pouring port 4 and the diffusing cylinder 15 are arranged above the top of the closed cover 16, and the slag discharging port 12 is arranged at the side part of the closed cover 16; the crushing roller 17 and the discharging roller 18 are arranged above the bottom bed 24 and below the closed cover 16; the striker plate 19 is arranged on the side part of the discharge roller 18; the cushion layer 22 is arranged above the bottom bed 24 and below the material layer 23; the rotating ring 20 is connected with a rotating wheel 21 at the outer side of the bottom bed 24; the wind box 25 is arranged below the bottom bed 24, the ash hopper 26 is arranged below the wind box 25, the ash cleaning vehicle 27 is arranged below the ash hopper 26, and the track 28 is arranged below the ash cleaning vehicle 27; the grate bar 29 is in the middle of the bottom bed 24.

The inner diameter of the slag pouring port 4 is 1000-2000mm, the slag pouring port 4 is of a steel structure, a refractory material is arranged inside the slag pouring port and laid on the steel structure, and the thickness of the refractory material is 50-200 mm. The inner diameter of the slag discharge port 12 is 500-1200 mm. The slag discharging port 12 is of a steel structure, an inorganic heat-insulating material is arranged outside the slag discharging port, and the thickness of the heat-insulating material is 50-150 mm. The diameter of the crushing roller 17 is 1000-2500mm, high-temperature resistant steel materials are adopted as manufacturing materials, and the width of the roller teeth is 50-300 mm.

The crushing roller 17 can rotate in the positive and negative directions through a motor of the driving device, the steel slag can be pushed to move towards the slag discharging port 12 by the rotation of the positive direction of the motor, and the steel slag can be pushed to move towards the slag pouring port 4 by the rotation of the reverse direction. The number of the crushing rollers 17 in the rotating bed 5 is set to be 2-6 and evenly distributed. The discharge roller 18 is of a spiral discharge structure, the diameter is 1000-2500mm, high-temperature-resistant steel is adopted as a manufacturing material, and the width of the roller teeth is 50-300 mm.

The discharging roller 18 realizes the rotation in the positive direction through a motor of the driving device and can push the steel slag to move towards the slag discharging opening 12. The striker plate 19 is a steel structure baffle plate, the thickness is 100 and 200mm, the bottom of the striker plate 19 is arranged between the cushion layer 22 and the material layer 23, and the material layer 23 of steel slag can be blocked, so that the discharge roller 18 can push the steel slag to the slag discharge opening 12 for discharging.

The rotating ring 20 drives the bottom bed 24 to rotate, the rotating wheel 21 drives the rotating ring 20 to rotate under the driving of the motor, the rotation in the positive and negative directions is realized through the driving device motor of the rotating wheel 21, the positive rotation of the motor can drive the bottom bed 24 to move towards the slag discharging opening 12, and the negative rotation can drive the bottom bed 24 to move towards the slag pouring opening 4.

The cushion layer 22 is made of large-particle steel slag, the mass percentage of the steel slag particle size of 10-50mm is more than 90%, and the thickness of the cushion layer 22 is 50-500 mm. The thickness of the material layer 23 is 200-600 mm. The ash bucket 23 is used for collecting steel slag particles falling from the middle of the grate bar 29 below the bottom bed 24.

The circulating fan 7 is a high-temperature resistant fan, and the wind temperature can be resistant to not less than 180 ℃. The grate bars 29 are made of high-temperature-resistant steel materials, the interval distance between the grate bars 29 in the bottom bed 24 is 3-20mm, inorganic heat-insulating materials are arranged outside the air pipe 8, the heat exchanger 9 and the steam pipe 10 for heat insulation and are 50-150mm thick, and the inorganic heat-insulating materials are arranged inside and outside the closed cover 16 for heat insulation and are 50-150mm thick. The main body of the rotating bed 5 is annular, and the circulating fan 7 is preferentially arranged in the inner ring of the rotating bed 5.

The device for recycling the waste heat generated by the rotary crushing of the high-temperature steel slag comprises the following steps:

(1) the liquid slag pot 1 containing the high-temperature slag 3 is lifted and placed on the slag pouring machine 2 through a travelling crane, the slag pouring machine 2 tips over the steel slag at a certain speed to pour the steel slag to a slag pouring port 4 at the upper part of the rotating bed 5, and the high-temperature slag 3 falls on the upper part of a cushion layer 22 on a bottom bed 24 to form a material layer 23.

(2) While pouring the slag, the bottom bed 24 drives the rotating ring 20 to rotate on the rotating wheel 21, and drives the high-temperature steel slag layer 23 to move towards the slag discharging opening 12. The material layer 23 is continuously crushed under the rotation and the stirring of the crushing roller 17 in the moving process until the requirement of the crushing granularity is met.

(3) In the treatment process, cold air provided by the circulating fan 7 sequentially passes through the air box 25, the grate bars 29 in the bottom bed 24, the cushion layer 22 and the material layer 23 to realize the heat convection of the high-temperature material layer 23 until the high-temperature steel slag is cooled to a certain temperature.

(4) The high-temperature material layer 23 is cooled and crushed to form crushed slag 13 after rotating for one circle through the rotating bed 5, the material layer 23 is piled up and raised under the action of the material baffle plate 19, and the raised crushed slag 13 moves to the slag discharging port 12 under the rotary pushing of the discharging roller 18 and falls into the solid slag tank 14 for subsequent hot stuffy treatment of the steel slag.

(5) The convection heat exchange between the cold air and the high-temperature material layer 22 is converted into hot air, the hot air enters the heat exchanger 9 through the air pipe 8 to obtain pressure steam, and the steam is conveyed to the generator 11 through the steam pipe 10 to generate electricity. The hot air is cooled by a heat exchanger 9 to obtain cold air, and the cold air is recycled by a circulating fan 7 to cool the high-temperature slag 3.

Wherein, the slag pouring time of a single liquid slag pot 1 is 10-60 minutes, and the crushing time is 10-60 minutes. The rotating speed of the crushing roller 17 is 3-30 r/min, and the steel slag treatment speed can be increased by increasing the rotating speed of the crushing roller 17, otherwise, the steel slag treatment speed is reduced. The crushed slag 13 obtained by crushing the high-temperature slag 3 has a particle size less than 200mm, and the steel slag has a particle size more than 80%. The rotating speed of the discharging roller 18 is 3-30 r/min, and the steel slag discharging speed can be improved by adjusting the rotating speed of the discharging roller 18.

Specifically, the cooling air volume of the high-temperature slag 3 is 1000-³And h, the temperature of the crushed slag 13 at the slag discharging port 12 can be reduced by increasing the air quantity of the circulating fan 7, otherwise, the temperature of the crushed slag 13 is increased. The temperature of the broken slag 13 at the slag discharge port 12 is controlled to be 400-1000 ℃, so that the cooling, solidification and breaking of the steel slag can be realized, and certain heat can be reserved for subsequent hot stuffiness.

Wherein, the temperature of the cooling air provided by the circulating fan 7 is 200 ℃ and the temperature of the hot air is 600 ℃ when the material layer 22 formed by the high-temperature slag 3 is converted into the temperature of the hot air by convection heat exchange. The hot air is cooled to below 200 ℃ by a heat exchanger 9, and then the high-temperature slag 3 is circularly cooled by a circulating fan 7. The saturated water vapor obtained by the heat exchange of the hot air through the heat exchanger 9 generates electricity, and the generating capacity of each ton of steel slag is 10-30 kWh.

And under the condition that solidification phenomena such as incrustation and the like of the high-temperature slag 3 in the liquid slag tank 1 affect the difficulty in uniform slag pouring, the slag pouring machine 2 is adopted to carry out slag pouring operation, and the solidified high-temperature slag 3 is uniformly poured into the slag pouring opening 4. Wherein, the fine-grained steel slag collected by the ash bucket 23 needs to be removed and transported out by an ash removal vehicle 27 regularly, and is generally cleaned once in 1-3 days.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a broken waste heat recovery device of high temperature slag revolving bed, includes liquid slag ladle (1), slag pouring machine (2), revolving bed (5), pulls out sediment machine (6), circulating fan (7), tuber pipe (8), heat exchanger (9), steam pipe (10), generator (11), solid-state slag ladle (14), its characterized in that: the liquid slag pot (1) can be toppled and established on the sediment machine (2) of falling, and revolving bed (5) top is equipped with pulls out sediment machine (6), and revolving fan (7) are through tuber pipe (8) connection revolving bed (5), heat exchanger (9), and generator (11) are connected through steam pipe (10) in heat exchanger (9), revolving bed (5) pivoted is established between sediment machine (2) and circulating fan (7) of falling, and the slag is arranged through revolving bed (5) cooling.

2. The device for recovering the crushing waste heat of the high-temperature steel slag rotating bed according to the claim 1, wherein the high-temperature slag (3) in the liquid slag tank (1) is processed into crushed slag (13) through the rotating bed (5), the crushed slag (13) is loaded into the solid slag tank (14) through the slag discharge port (12), the main body of the rotating bed (5) is ring-shaped, and the circulating fan (7) is arranged in the inner ring of the rotating bed (5).

3. The high-temperature steel slag rotary bed crushing waste heat recovery device according to claim 1, wherein the rotary bed (5) comprises a slag pouring port (4), a slag discharging port (12), a diffusing cylinder (15), a closed cover (16), a crushing roller (17), a discharging roller (18), a striker plate (19), a swivel (20), a rotating wheel (21), a cushion layer (22), a material layer (23), a bottom bed (24), an air box (25), an ash hopper (26), an ash cleaning vehicle (27), a rail (28) and a grate bar (29), the bottom bed (24) is rotatably arranged between a main body at the lower part of the rotary bed (5) and the closed cover (16) at the upper part, the air box (25), the ash hopper (26), the ash cleaning vehicle (27) and the rail (28) at the lower part of the bottom bed (24) are fixedly connected to the main body of the rotary bed (5) from top to bottom in sequence, and a circulating fan (7) is connected with the air box (25) through an air pipe (8), the heat exchanger (9) is connected with the closed cover (16) through an air pipe (8).

4. The recycling device of the crushing waste heat of the high-temperature steel slag revolving bed according to claim 3, characterized in that, the slag pouring port (4) is arranged on the closed cover (16) corresponding to the liquid slag tank (1), the diffusing cylinder (15) penetrates through the closed cover (16), the side wall of the closed cover (16) is provided with the slag discharging port (12), the crushing roller (17) and the discharging roller (18) are arranged on the upper portion of a bottom bed (24) in the closed cover (16) in a rotatable mode along the radial direction, the material baffle plate (19) is arranged between the projection positions of the slag pouring port (4) and the slag discharging port (12), a cushion layer (22) is arranged between the bottom bed (24) and the material layer (23), the outer side of the bottom bed (24) is provided with a rotating ring (20), the rotating ring (20) is meshed with and connected with a rotating wheel (21), the bottom bed (24) is provided with a grate bar (29) corresponding to the position of the air box (25), and the driving rotation direction of the rotating wheel (21) is the same as the driving rotation direction of the crushing roller (17).

5. The device for recovering the crushing waste heat of the high-temperature steel slag rotating bed according to claim 4, wherein the inner diameter of the slag pouring port (4) is 1000-2000mm, the inner diameter of the slag discharging port (12) is 500-1200mm, a steel structure in the slag pouring port (4) is provided with a refractory material with the thickness of 50-200mm, the outer part of the slag discharging port (12) is provided with an inorganic heat-insulating material with the thickness of 50-150mm, the outer parts of the air duct (8), the heat exchanger (9) and the steam pipe (10) are provided with inorganic heat-insulating materials with the thickness of 50-150mm, and the inner part and the outer part of the closed cover (16) are provided with inorganic heat-insulating materials with the thickness of 50-150 mm.

6. The device for recycling the crushing waste heat of the high-temperature steel slag rotating bed according to claim 4, wherein the crushing roller (17) rotates in forward and reverse directions through a motor of a driving device, the forward rotation pushes the steel slag to move towards the slag discharging opening (12), the reverse rotation pushes the steel slag to move towards the slag pouring opening (4), the discharging roller (18) is of a spiral discharging structure, and the discharging roller (18) rotates to push the steel slag to move towards the slag discharging opening (12).

7. The device for recycling the crushing waste heat of the high-temperature steel slag rotating bed according to claim 4, wherein the rotating wheel (21) drives the rotating ring (20) to drive the bottom bed (24) to rotate, the rotating wheel (21) realizes rotation in forward and reverse directions through a motor of the driving device, the forward rotation drives the bottom bed (24) to move towards the slag discharge port (12), and the reverse rotation drives the bottom bed (24) to move towards the slag discharge port (4).

8. The device for recycling the crushing waste heat of the high-temperature steel slag rotating bed according to claim 4, wherein the bottom of the striker plate (19) is arranged between the cushion layer (22) and the material layer (23), the striker plate (19) blocks the material layer (23) of the steel slag, and the discharging roller (18) pushes the steel slag to discharge to the slag discharging port (12).

9. The device for recovering the crushing waste heat of the high-temperature steel slag rotating bed as claimed in claim 4, wherein the diameters of the crushing roller (17) and the discharging roller (18) are 1000-2500mm, the width of the roller teeth is 50-300mm, 2-6 crushing rollers (17) are uniformly distributed in the rotating bed (5), the material baffle plate (19) is a steel structure baffle plate, and the thickness is 100-200 mm.

10. The device for recycling the crushing waste heat of the high-temperature steel slag rotating bed as claimed in claim 3, wherein the cushion layer (22) is made of large-particle steel slag, the particle size of the steel slag is 10-50mm, the mass percentage of the steel slag is more than 90%, the thickness of the cushion layer (22) is 50-500mm, and the thickness of the material layer (23) is 200-600 mm.