Cover for steel slag hot disintegration and steel slag hot disintegration device

Abstract

The utility model provides a cover for steel slag hot disintegration and a steel slag hot disintegration device. The cover for steel slag hot disintegration comprises a fixing frame, a sealing cover and a dust removal assembly, the fixing frame is arranged at a top opening of the hot stuffy pit, a dust collection space is formed in the fixing frame, a dust collection opening communicated with the dust collection space is formed in the bottom of the fixing frame, and a vertically-through dumping channel is formed in a middle opening of the fixing frame; the sealing cover is movably arranged above the dumping channel in a covering manner; the dust removal assembly is provided with an air suction pipe, and the air suction end of the air suction pipe communicates with the dust collection space. According to the cover for hot disintegration of the steel slag, the cover is divided into the fixing frame and the sealing cover, when the steel slag is poured into a hot disintegration pit, generated dust can be absorbed by the dust removal assembly through the dust suction opening of the fixing frame, the dust is completely absorbed before overflowing out of the hot disintegration pit, dust pollution cannot be caused, and the influence on the environment is reduced; and the environment-friendly effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel slag recycling, and in particular relates to a steel slag heat stuffing cover and a steel slag heat stuffing device. Background Art

[0002] Converter slag is a waste slag produced by converter steelmaking. It is a liquid with a temperature of more than 1400℃ when it is discharged from the furnace. Pit hot stuffing is a process for treating this waste slag. Usually, the slag is poured into the hot stuffing pit. After it is filled, the pit mouth is covered with a cover, and water is supplied through the bottom of the hot stuffing pit to make the slag and water undergo a hydrolysis reaction, ultimately achieving the purpose of slag-iron separation and digestion of free CaO and MgO in the slag.

[0003] In the existing pit-type hot stuffing process, steel slag from multiple furnaces is uniformly poured into a steel slag hot stuffing pit for treatment. After the hot stuffing is completed, an excavator is needed to grab the slag in the pit and transport it to a car. The grabbing and transportation of the excavator and the dumping of the steel slag will generate a large amount of dust, causing environmental pollution. The existing solution is to provide a container to pre-load the steel slag and place the container in the hot stuffing pit for hot stuffing. However, this method requires the preparation of multiple containers to continuously perform the hot stuffing operation of the steel slag, which increases the cost of use; and the loading of steel slag into the container will still generate dust pollution, and the dust control is not thorough; in addition, a hot stuffing cover is required to seal the pit mouth of the hot stuffing pit during hot stuffing. The hot stuffing cover is large in size, and the energy consumption of sealing and opening the sealing cover is large, which increases the cost of use. Utility Model Content

[0004] The utility model provides a hood for hot stuffing of steel slag, aiming to solve the technical problems in the prior art of dumping steel slag into a hot stuffing pit to generate dust pollution, high cost of using containers to hold the steel slag, and high manufacturing and use costs of sealing covers.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] In a first aspect, a hood for hot stuffing of steel slag is provided, comprising:

[0007] The fixing frame is a rectangular frame structure, the fixing frame is arranged at the top opening of the heat pit, a dust suction space is formed inside the fixing frame, a dust suction port connected to the dust suction space is opened at the bottom of the fixing frame, the dust suction port is connected to the heat pit, and a dumping channel is formed in the middle opening of the fixing frame, which is connected to the heat pit;

[0008] A sealing cover, a movable cover is arranged above the pouring channel to cooperate with the fixing frame to seal the top opening of the heat pit; and

[0009] The dust removal component is provided with an air suction pipe, and the air suction end of the air suction pipe is connected with the dust suction space.

[0010] In combination with the first aspect, in a possible implementation manner, the fixing frame specifically includes:

[0011] An annular upper fixing block, the bottom of which is formed with a groove opening downward, and the middle of the upper fixing block forms the pouring channel; and

[0012] The lower ring plate blocks the opening of the groove correspondingly. The groove and the lower ring plate enclose the dust suction space. The lower ring plate is provided with a plurality of dust suction ports.

[0013] In combination with the first aspect, in a possible implementation, a hinge seat is provided at one end of the fixing frame, the axis of the hinge shaft of the hinge seat is parallel to the length direction of the fixing frame, and a hinge hole is provided on the side of the sealing cover corresponding to the hinge seat, and the hinge hole is rotatably connected to the hinge seat.

[0014] In combination with the first aspect, in a possible implementation manner, a hanging seat is provided on the upper surface of the sealing cover, and the hanging seat is used to connect a lifting device.

[0015] In combination with the first aspect, in a possible implementation, the dust removal assembly further includes a dust collector, and the discharge end of the air intake pipe is connected to the dust collector.

[0016] In combination with the first aspect, in a possible implementation, a hoisting pulley is provided on the sealing cover, the hoisting pulley is provided at an opposite end of the hinge hole, and the hoisting pulley is used to connect a hoisting rope of a hoisting device.

[0017] In combination with the first aspect, in a possible implementation, a first water inlet pipe is connected to the upper fixed block, a water inlet end of the first water inlet pipe is connected to a water source, and a water outlet end of the first water inlet pipe is connected to the dust suction space.

[0018] In combination with the first aspect, in a possible implementation, a cooling chamber is formed inside the sealing cover, a water outlet hole is opened at the center of the inner plate surface of the sealing cover, and the water outlet hole is connected to the cooling chamber; a second water inlet pipe is connected to the sealing cover, the water inlet end of the second water inlet pipe is connected to a water source, and the water outlet end of the second water inlet pipe is connected to the cooling chamber.

[0019] Compared with the prior art, the utility model provides a cover for hot stuffing of steel slag, which is divided into two parts, a fixed frame and a sealing cover. The fixed frame is arranged at the top opening of the hot stuffing pit, and the fixed frame has a dust suction space, and the dust suction space is connected to the dust removal component. When pouring steel slag into the hot stuffing pit, the generated dust will be absorbed by the dust removal component through the dust suction port of the fixed frame, and the dust will be completely absorbed before overflowing the hot stuffing pit, and will not cause dust pollution. The dust generated when the excavator is transported is also absorbed by the dust removal component through the dust suction port, which reduces the impact on the environment and improves the environmental protection effect. The sealing cover can cooperate with the fixed frame to seal the hot stuffing pit to ensure the normal operation of the hot stuffing work. The sealing cover only needs to block the dumping channel of the fixed frame, and the sealing cover is small in size and low in manufacturing cost. The present application does not need to prepare multiple containers to hold steel slag, and a conventional hot stuffing pit can be used to hot stuff steel slag without generating dust pollution, which greatly reduces the cost of use.

[0020] In a second aspect, a slag hot stuffing device is provided, comprising:

[0021] A hot stuffy pit with an opening at the top and water inlet and outlet holes at the bottom;

[0022] A water supply and drainage assembly, comprising a water supply and drainage pipe, wherein the water supply and drainage port of the water supply and drainage pipe is connected to the water inlet and outlet holes; and

[0023] The slag heat-stifling hood according to any one of claims 1 to 8 is arranged on the top opening of the heat-stifling pit.

[0024] In combination with the second aspect, in a possible implementation, the water supply and drainage pipe is further provided with a water inlet and a drain outlet; the water supply and drainage assembly further includes a water supply pump, a water supply pipe, a drain pump and a drain pipe, the water inlet end of the water supply pipe is connected to the water outlet end of the water supply pump, and the water outlet end of the water supply pipe is connected to the water inlet; the water inlet end of the drain pipe is connected to the drain outlet, and the water outlet end of the drain pipe is connected to the water inlet end of the drain pump;

[0025] Either the water supply pipe or the drainage pipe is connected to the water supply and drainage pipe.

[0026] Compared with the prior art, the slag hot stuffing device provided by the utility model provides a cover, which is divided into two parts: a fixed frame and a sealing cover. The fixed frame is arranged at the top opening of the hot stuffing pit. The fixed frame has a dust suction space, and the dust suction space is connected to the dust removal component. When pouring the slag into the hot stuffing pit, the generated dust will be absorbed by the dust removal component through the dust suction port of the fixed frame. The dust will be completely absorbed before overflowing the hot stuffing pit, and will not cause dust pollution. The dust generated when the excavator is transported is also absorbed by the dust removal component through the dust suction port, which reduces the impact on the environment and improves the environmental protection effect. The sealing cover can cooperate with the fixed frame to seal the hot stuffing pit to ensure the normal operation of the hot stuffing work. The sealing cover only needs to block the dumping channel of the fixed frame. The sealing cover is small in size and low in manufacturing cost. The present application does not need to prepare multiple containers to hold the slag. A conventional hot stuffing pit can be used to hot stuff the slag without generating dust pollution, which greatly reduces the cost of use. The water supply and drainage components can supply water and drain water from the bottom of the hot stuffy pit. There is no need to set a spray pipe on the sealing cover to stuff the hot stuffy pit. The hot stuffing efficiency is high. The dust generated by this device will be absorbed by the dust suction port and sent to the dust removal component for treatment, avoiding dust pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0028] Figure 1 A schematic diagram of the structure of a hood for hot stuffing steel slag provided in the first embodiment of the utility model;

[0029] Figure 2 for Figure 1 A front cross-sectional view of the upper fixing block used in;

[0030] Figure 3 for Figure 1 A top view of the lower ring plate used in;

[0031] Figure 4 A top view of the sealing cover used in the second embodiment of the present utility model;

[0032] Figure 5 for Figure 4 A cross-sectional view of a sealing cover used in;

[0033] Figure 6 This is a front view cross section of the assembly of the slag heat stuffing cover and the heat stuffing pit used in the second embodiment of the utility model.

[0034] Description of reference numerals:

[0035] 1. Fixed frame; 11. Upper fixed block; 12. Lower ring plate; 121. Dust suction port; 13. Articulated seat; 14. First water inlet pipe;

[0036] 2. Sealing cover; 21. Hinge hole; 22. Winch pulley; 23. Second water inlet pipe; 24. Water outlet;

[0037] 3. Dust removal assembly; 31. Air intake pipe;

[0038] 4. Suspension seat;

[0039] 5. Hot and stuffy pit;

[0040] 6. Water supply and drainage components; 61. Water supply and drainage pipes; 62. Water supply pump; 63. Water supply pipe; 64. Drainage pump; 65. Drainage pipe. DETAILED DESCRIPTION

[0041] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0042] It should be noted that the terms "length", "width", "height", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 cannot be understood as a limitation on the utility model.

[0043] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In addition, the meaning of "multiple" and "several" is two or more, unless otherwise clearly and specifically defined.

[0045] Please also read Figures 1 to 6 , the hood for hot stuffing of steel slag provided by the utility model is now described. The hood for hot stuffing of steel slag comprises a fixing frame 1, a sealing cover 2 and a dust removal assembly 3. The fixing frame 1 is a rectangular frame structure, and the fixing frame 1 is arranged at the top opening of the hot stuffing pit 5. A dust suction space is formed inside the fixing frame 1. A dust suction port 121 connected to the dust suction space is provided at the bottom of the fixing frame 1. The dust suction port 121 is connected to the hot stuffing pit 5. The middle opening of the fixing frame 1 forms a dumping channel that passes through from top to bottom, and the dumping channel is connected to the hot stuffing pit 5; the movable cover of the sealing cover 2 is arranged above the dumping channel to cooperate with the fixing frame 1 to seal the top opening of the hot stuffing pit 5; the dust removal assembly 3 has an air intake pipe 31, and the air intake end of the air intake pipe 31 is connected to the dust suction space.

[0046] It should be noted that the conventional sealing cover needs to cover the upper opening of the hot pit as a whole, so the size of the sealing cover is larger than the top opening of the hot pit. The conventional sealing cover is heavy and difficult to carry and seal.

[0047] The hood for hot stuffing of steel slag provided in this embodiment provides a hood, which is divided into two parts, a fixed frame 1 and a sealing cover 2, compared with the prior art. The fixed frame 1 is arranged at the top opening of the hot stuffing pit 5, and the fixed frame 1 has a dust suction space, and the dust suction space is connected to the dust removal component 3. When pouring steel slag into the hot stuffing pit 5, the generated dust will be absorbed by the dust removal component 3 through the dust suction port 121 of the fixed frame 1, and the dust will be completely absorbed before overflowing the hot stuffing pit 5, and will not cause dust pollution. The dust generated when the excavator is grabbed and transported is also absorbed by the dust removal component 3 through the dust suction port 121, which reduces the impact on the environment and improves the environmental protection effect. The sealing cover 2 can cooperate with the fixed frame 1 to seal the hot stuffing pit 5 to ensure the normal operation of the hot stuffing work. The sealing cover 2 only needs to block the dumping channel of the fixed frame 1, and the sealing cover 2 is small in size and low in manufacturing cost. The present application does not need to prepare multiple containers to hold steel slag. The conventional hot stuffing pit 5 can be used to hot stuff steel slag without generating dust pollution, which greatly reduces the cost of use.

[0048] In some embodiments, see Figures 1 to 3The fixing frame 1 specifically includes an annular upper fixing block 11 and a lower ring plate 12. A groove opening downward is formed at the bottom of the upper fixing block 11, and a dumping channel is formed in the middle of the upper fixing block 11; the lower ring plate 12 corresponds to the opening of the blocked groove, and the groove and the lower ring plate 12 are enclosed to form a dust suction space, and a plurality of dust suction ports 121 are provided on the lower ring plate 12. The upper fixing block 11 plays a supporting role, and can be supported at the opening of the hot stuffy pit 5 to preliminarily block the opening of the hot stuffy pit 5. The lower ring plate 12 and the groove form a dust suction space, and the dust will enter the dust suction space from the dust suction port 121 to diffuse, and then enter the suction pipe 31 from the dust suction space. The setting of the dust suction space enables the suction pipe 31 to generate negative pressure at the dust suction port 121 when the suction pipe 31 is working, so as to absorb the dust in the hot stuffy pit, prevent the dust from escaping from the hot stuffy pit, and prevent the dust from polluting the environment.

[0049] In some embodiments, see Figure 6 and Figure 1 A hinge seat 13 is provided at one end of the fixing frame 1, and the hinge axis of the hinge seat 13 is parallel to the length direction of the fixing frame 1. A hinge hole 21 is provided on the side of the sealing cover 2 corresponding to the hinge seat 13, and the hinge hole 21 is rotatably connected to the hinge seat 13. The hinge seat 13 and the sealing cover 2 are hinged, so that the sealing cover 2 can be turned over. By turning over the sealing cover 2, the heat pit 5 can be blocked and opened, which reduces the difficulty of operation.

[0050] In some embodiments, see Figure 4 The upper surface of the sealing cover 2 is provided with a lifting seat 4, which is used to connect the lifting equipment. The setting of the lifting seat 4 facilitates the connection of the sealing cover 2 with other equipment, so that the sealing cover 2 can be lifted to expose the dumping channel for dumping and digging out the slag.

[0051] Optionally, the lifting equipment may be a winch or a hoist.

[0052] During specific implementation, the lifting seat 4 and the lifting equipment are connected through a hook lock, and a lifting ring is set on the lifting seat 4. The lifting equipment is provided with a lifting rope with a hook, and the hook is hung with the lifting ring. By rolling up the lifting rope, the lifting seat 4 can be driven to rise, and then the sealing cover 2 can be driven to flip over.

[0053] During specific implementation, the lifting seat 4 may also be provided with a connection block, and a clamping hand is provided at the hoisting end of the lifting equipment, and the clamping hand clamps the connection block to drive the lifting seat 4 to move.

[0054] In some embodiments, the dust removal assembly 3 further includes a dust collector, and the discharge end of the air intake pipe 31 is connected to the dust collector. The dust collector can collect dust in a centralized manner, which is convenient for subsequent dust treatment and increases the dust treatment efficiency. After the dust is collected, it will not spread, reducing the impact on the environment.

[0055] In some embodiments, see Figure 1The sealing cover 2 is provided with a hoisting pulley 22, which is arranged at the opposite end of the hinge hole 21. The hoisting pulley 22 is used to connect the hoisting rope of the hoisting device. The hoisting pulley 22 can slide with the hoisting rope. The hoisting device lifts the hoisting rope upward, and the hoisting rope drives the hoisting pulley 22 to rise. The hoisting pulley 22 and the sealing cover 2 are fixed, and the sealing cover 2 can be turned over with the movement of the hoisting pulley 22.

[0056] In some embodiments, see Figure 1 The upper fixed block 11 is provided with a first water inlet pipe 14, the water inlet end of the first water inlet pipe 14 is connected to a water source, and the water outlet end of the first water inlet pipe 14 is connected to the dust suction space. The first water inlet pipe 14 can introduce water into the dust suction space to cool down the upper fixed block 11, and the water in the dust suction space can enter the hot pit from the dust suction port 121 to realize the flow of water, and the water can cool down the upper fixed block 11 to extend the service life.

[0057] It should be noted that the first water inlet pipe 14 is used during the hot and stuffy process, during which time no dust is generated and the dust removal component 3 does not work.

[0058] During specific implementation, a plurality of first water inlet pipes 14 may be provided to speed up the water injection speed and improve the cooling efficiency of the upper fixing block 11 .

[0059] In some embodiments, see Figure 1 and Figure 5 A cooling chamber is formed inside the sealing cover 2, and a water outlet hole 24 is provided at the center of the inner plate surface of the sealing cover 2, and the water outlet hole 24 is connected to the cooling chamber; a second water inlet pipe 23 is connected to the sealing cover 2, and the water inlet end of the second water inlet pipe 23 is connected to the water source, and the water outlet end of the second water inlet pipe 23 is connected to the cooling chamber. Water enters the sealing cover 2 from the second water inlet pipe 23 to cool the sealing cover 2, and the water flows out from the water outlet hole 24 and flows into the hot pit 5, realizing the flow of water and improving the cooling effect. The water flowing into the hot pit 5 can digest the steel slag and improve the utilization rate of water.

[0060] In specific implementation, the water inlet end of the second water inlet pipe 23 is connected to the water source through a hose to avoid interference with the normal turning of the sealing cover 2.

[0061] During specific implementation, a plurality of interconnected water injection chambers are arranged in the cooling chamber, and each second water inlet pipe 23 corresponds to a water injection chamber. The water injection chamber located in the middle is connected to the water outlet hole 24. Water enters the water injection chamber and then flows out from the water outlet hole 24. The water can stay in the water injection chamber for a short time to increase the contact area and contact time between the water and the sealing cover 2, thereby improving the heat exchange efficiency.

[0062] Based on the same inventive concept, see Figure 6The present application also provides a slag heat-stifling device, comprising a heat-stifling pit 5, a water supply and drainage assembly 6, and a slag heat-stifling cover as in any of the above embodiments. The heat-stifling pit 5 has an opening at the top and a water inlet and outlet hole at the bottom; the water supply and drainage assembly 6 has a water supply and drainage pipe 61, and the water supply and drainage port of the water supply and drainage pipe 61 is connected to the water inlet and outlet hole; the slag heat-stifling cover is arranged on the top opening of the heat-stifling pit 5.

[0063] The heat-stifling device for steel slag provided in this embodiment provides a cover, which is divided into two parts, a fixed frame 1 and a sealing cover 2, compared with the prior art. The fixed frame 1 is arranged at the top opening of the heat-stifling pit 5, and the fixed frame 1 has a dust suction space, and the dust suction space is connected to the dust removal component 3. When pouring steel slag into the heat-stifling pit 5, the generated dust will be absorbed by the dust removal component 3 through the dust suction port 121 of the fixed frame 1, and the dust will be completely absorbed before overflowing the heat-stifling pit 5, and will not cause dust pollution. The dust generated when the excavator is grabbed and transported is also absorbed by the dust removal component 3 through the dust suction port 121, which reduces the impact on the environment and improves the environmental protection effect. The sealing cover 2 can cooperate with the fixed frame 1 to seal the heat-stifling pit 5 to ensure the normal operation of the heat-stifling work. The sealing cover 2 only needs to block the dumping channel of the fixed frame 1, and the sealing cover 2 is small in size and low in manufacturing cost. The present application does not need to prepare multiple containers to hold steel slag. The conventional heat-stifling pit 5 can be used to heat-stifle steel slag without generating dust pollution, which greatly reduces the cost of use. The water supply and drainage assembly 6 can supply water and drain water from the bottom of the heat pit 5. There is no need to set a spray pipe on the sealing cover 2 to heat the heat pit 5. The heat pit 5 has high efficiency. The dust generated by the device will be absorbed by the dust suction port 121 and sent to the dust removal assembly 3 for treatment, avoiding dust pollution.

[0064] In some embodiments, see Figure 6 , the water supply and drainage pipe 61 is also provided with a water inlet and a drainage outlet; the water supply and drainage assembly 6 also includes a water supply pump 62, a water supply pipe 63, a drainage pump 64 and a drainage pipe 65, the water inlet end of the water supply pipe 63 is connected to the water outlet end of the water supply pump 62, and the water outlet end of the water supply pipe 63 is connected to the water inlet; the water inlet end of the drainage pipe is connected to the drainage outlet, and the water outlet end of the drainage pipe is connected to the water inlet end of the drainage pump 64; the water supply pipe 63 and the drainage pipe are selectively connected to the water supply and drainage pipe 61. The water supply pump 62 can pass water into the water supply pipe 63, and the water supply pipe 63 is connected to the water supply and drainage pipe 61, and water is sent from the water inlet and outlet holes of the hot pit 5 into the hot pit 5, and water is flooded from the bottom, which increases the contact area and contact efficiency between water and steel slag. The drainage pump 64 can extract water from the drainage pipe 65, and the drainage pipe 65 is connected to the water supply and drainage pipe 61, and then the water in the hot pit 5 is extracted to achieve drainage operation. Either the water supply pipe 63 or the drainage pipe 65 is opened, and the water supply operation and the drainage operation are separated, which can ensure timely water flow and timely drainage.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hood for hot stuffing of steel slag, characterized in that: include: The fixing frame is a rectangular frame structure, the fixing frame is arranged at the top opening of the heat pit, a dust suction space is formed inside the fixing frame, a dust suction port connected to the dust suction space is opened at the bottom of the fixing frame, the dust suction port is connected to the heat pit, and a dumping channel is formed in the middle opening of the fixing frame, which is connected to the heat pit; A sealing cover, a movable cover is arranged above the pouring channel to cooperate with the fixing frame to seal the top opening of the heat pit; as well as The dust removal component is provided with an air suction pipe, and the air suction end of the air suction pipe is connected with the dust suction space.

2. The slag heat-stifling cover according to claim 1, characterized in that: The fixing frame specifically comprises: An annular upper fixing block, the bottom of which is formed with a groove opening downward, and the middle of the upper fixing block forms the pouring channel; and The lower ring plate blocks the opening of the groove correspondingly. The groove and the lower ring plate enclose the dust suction space. The lower ring plate is provided with a plurality of dust suction ports.

3. The slag heat-stifling cover according to claim 1, characterized in that: A hinge seat is provided at one end of the fixing frame, the hinge axis of the hinge seat is parallel to the length direction of the fixing frame, and a hinge hole is provided on the side surface of the sealing cover corresponding to the hinge seat, and the hinge hole is rotatably connected to the hinge seat.

4. The slag heat-stifling cover according to claim 1, characterized in that: A hanging seat is provided on the upper surface of the sealing cover, and the hanging seat is used to connect the lifting equipment.

5. The slag heat-stifling cover according to claim 1, characterized in that: The dust removal assembly also includes a dust collector, and the discharge end of the suction pipe is connected to the dust collector.

6. The slag heat-stifling cover according to claim 3, characterized in that: A hoisting pulley is provided on the sealing cover, and the hoisting pulley is arranged at the opposite end of the hinge hole. The hoisting pulley is used to connect the hoisting rope of the hoisting device.

7. The slag heat-stifling cover according to claim 2, characterized in that: The upper fixing block is connected with a first water inlet pipe, a water inlet end of the first water inlet pipe is communicated with a water source, and a water outlet end of the first water inlet pipe is communicated with the dust suction space.

8. The slag heat-stifling cover according to claim 1, characterized in that: A cooling chamber is formed inside the sealing cover, a water outlet hole is opened at the center of the inner plate surface of the sealing cover, and the water outlet hole is connected to the cooling chamber; a second water inlet pipe is connected to the sealing cover, the water inlet end of the second water inlet pipe is connected to a water source, and the water outlet end of the second water inlet pipe is connected to the cooling chamber.

9. A heat-stifling device for steel slag, characterized in that: include: A hot stuffy pit with an opening at the top and water inlet and outlet holes at the bottom; A water supply and drainage assembly, comprising a water supply and drainage pipe, wherein the water supply and drainage port of the water supply and drainage pipe is connected to the water inlet and outlet holes; as well as The slag heat-stifling hood according to any one of claims 1 to 8 is arranged on the top opening of the heat-stifling pit.

10. The slag heat-stifling device according to claim 9, characterized in that: The water supply and drainage pipe is also provided with a water inlet and a drainage outlet; the water supply and drainage assembly also includes a water supply pump, a water supply pipe, a drainage pump and a drainage pipe, the water inlet end of the water supply pipe is connected to the water outlet end of the water supply pump, and the water outlet end of the water supply pipe is connected to the water inlet; the water inlet end of the drainage pipe is connected to the drainage outlet, and the water outlet end of the drainage pipe is connected to the water inlet end of the drainage pump; Either the water supply pipe or the drainage pipe is connected to the water supply and drainage pipe.

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