Steel slag hot stuffy pit discharging assembly and steel slag hot stuffy pit system

Abstract

The utility model provides a steel slag hot stuffy pit discharging assembly and a steel slag hot stuffy pit system. The steel slag hot stuffy pit discharging assembly comprises a conveying assembly, a screening assembly and a collector. The conveying assembly comprises a conveying belt, a feeding end and a discharging end are formed at the two ends of the conveying belt respectively, the feeding end is arranged between every two adjacent hot stuffy pits, the discharging end of the conveying belt extends to a steel slag treatment area, and the feeding end is lower than the discharging end; the screening assembly is provided with a screening net, and the screening net is erected above the feeding end. The collector is arranged below the falling end of the screening net and used for collecting oversize products of the screening net. According to the steel slag hot stuffy pit discharging assembly, after being taken out of a hot stuffy pit, powder steel slag containing iron slag is directly poured to the position above the screening net, the powder steel slag is pre-screened through the screening net, large steel slag and the iron-containing steel slag are directly screened at the screening net and can rapidly participate in reaction again, and the treatment efficiency 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 hot pit discharging assembly and a steel slag hot pit system. Background Art

[0002] Converter slag is a kind of waste slag produced by converter steelmaking. It is a liquid with a temperature of over 1400℃ in the furnace state. It is generally reused by pit stewing process. The slag is poured into the slag pit and then sprayed with water. The slag stewing cover is closed to form a closed space. The hot slag in the slag pit meets water to produce a large amount of saturated steam, which breaks and pulverizes by itself to form powdery slag, which can then be processed.

[0003] The existing powdered steel slag is generally poured into a slag pot or slag pan, and transported to a processing site for grinding to separate the iron powder and slag powder, and the iron powder is recycled or sold. The existing transportation method is to use a transport vehicle for transportation. During the transportation process, there will be losses, and the efficiency of a single transportation is low due to the oil volume and capacity of the transport vehicle. The whole process requires the use of multiple transport vehicles, which increases the use cost and maintenance cost. At the processing site, the unprocessed slag blocks need to be sorted out and transported back to the slag pit by a transport vehicle for reaction. The transportation time of the transport vehicle is long, resulting in a long overall steel slag processing cycle. Utility Model Content

[0004] The utility model provides a steel slag hot pit discharging assembly and a steel slag hot pit system, aiming to solve the technical problems of low transportation efficiency and high transportation cost of steel slag after treatment in the prior art.

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

[0006] In a first aspect, a steel slag hot pit discharging assembly is provided, comprising:

[0007] The conveying assembly includes a conveyor belt, wherein two ends of the conveyor belt respectively form a feed end and a discharge end, wherein the feed end is arranged between two adjacent hot pits, and the discharge end of the conveyor belt extends to the slag processing area, and the feed end is lower than the discharge end;

[0008] A screening assembly, comprising a screening net, wherein the screening net is arranged above the feed end, and the conveyor belt is used for carrying the screened material of the screening net; and

[0009] The collector is arranged below the screening net and is used to collect the screened material of the screening net.

[0010] In combination with the first aspect, in a possible implementation manner, the transmission component further includes:

[0011] A first transmission support is arranged between two adjacent heat pits;

[0012] A first rotating shaft, rotatably disposed on the first conveying bracket;

[0013] A second conveying support is provided in the slag processing area; and

[0014] The second rotating shaft is rotatably disposed on the second conveying support, the second rotating shaft is higher than the first rotating shaft, and the conveyor belt is wound around the first rotating shaft and the second rotating shaft.

[0015] In combination with the first aspect, in a possible implementation, the screening assembly further includes a support frame, which spans the conveyor belt along the width direction of the conveyor belt, and the screening net is mounted on the support frame.

[0016] In combination with the first aspect, in a possible implementation, the screening net gradually tilts upward along the transport direction of the conveyor belt, the lower end of the screening net is located directly above the first rotating shaft, and a drop opening is provided.

[0017] In combination with the first aspect, in a possible implementation, the collector includes a bottom plate and a horizontal baffle plate arranged around the outer periphery of the bottom plate, the horizontal baffle plate and the bottom plate together form a collecting trough with a top opening, and the opening of the collecting trough is located below the falling end of the screening net.

[0018] The slag hot stuffy pit discharging assembly provided by the utility model, compared with the prior art, has a conveyor belt arranged between two hot stuffy pits, and a screening net arranged above the conveyor belt. After the powdered slag containing iron slag is taken out from the hot stuffy pit by an excavator, it is directly poured onto the screening net. The screening net pre-screens the powdered slag. Large pieces of slag and iron slag are screened as overscreen materials and fall into a collector for collection. Small pieces of powdered slag pass through the sieve holes of the screening net and fall onto the conveyor belt, and are transported to the slag treatment area along the conveyor belt for treatment. The utility model eliminates the need for a transport vehicle, and the powdered slag can be directly moved along the conveyor belt without considering the influence of the single capacity and moving speed of the transport vehicle. The transport efficiency is high, continuous transport is possible, and the use cost is low. Large pieces of slag and iron-containing slag are directly screened and processed at the screening net. The large pieces of slag are put back into the hot stuffy pit after screening and can quickly re-participate in the reaction, thus eliminating the need for transporting to a treatment site and then from the treatment site to the hot stuffy pit, thereby accelerating the treatment efficiency and optimizing the overall treatment process.

[0019] In a second aspect, a slag hot pit system is provided, comprising:

[0020] A plurality of heat pits are arranged in parallel along a first horizontal direction, with a gap formed between two adjacent heat pits;

[0021] A feeding assembly, comprising a plurality of feeding baskets corresponding to the heat pits one by one, the feeding baskets being able to be raised and lowered to transport materials into the heat pits;

[0022] A plurality of steel slag hot stuffy pit discharging assemblies as described in any one of the possible implementations above, wherein the feed end of the conveyor belt is arranged at the corresponding gap; and

[0023] A dust removal component is arranged above the hot stuffy pit and the feed end, and the dust removal component is used to collect smoke and dust in the hot stuffy pit and in the steel slag hot stuffy pit discharge assembly.

[0024] In conjunction with the second aspect, in a possible implementation, the feeding assembly further includes:

[0025] A feeding rack is erected on the ground and fixed relative to the heat pit, a slide rail is provided on the top of the feeding rack, and the slide rail extends along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction; and

[0026] The sliding module has a roller at the bottom, and the roller is in rolling cooperation with the slide rail. A winding rope is wound around the periphery of the sliding module, and the bottom end of the winding rope is connected to the feeding basket.

[0027] In conjunction with the second aspect, in a possible implementation, the dust removal component includes:

[0028] A screening dust collecting hood, which is arranged above the screening net;

[0029] A heat-suffocating dust collecting hood is arranged above the heat-suffocating pit; and

[0030] The dust collector body is communicated with the screening dust collecting hood and the heat-suffocating dust collecting hood respectively.

[0031] In combination with the second aspect, in a possible implementation, the heat-stifling dust collecting hood includes a fixed hood and a movable hood, and the movable hood and the fixed hood are arranged sequentially and side by side above the heat-stifling pit along the conveying direction of the conveyor belt, and guide rails are provided on both sides of the movable hood, and the long axis of the guide rails is perpendicular to the first horizontal direction, and pulleys are respectively provided on both sides of the movable hood, which are respectively rollingly matched with the guide rails on the corresponding sides.

[0032] In combination with the second aspect, in a possible implementation, the steel slag hot stuffy pit system also includes a sorting component, the sorting component includes a sorting vehicle, and the sorting vehicle is used to move the material in the collector of the steel slag hot stuffy pit discharging assembly into the hot stuffy pit.

[0033] The slag hot stuffy pit system provided by the utility model, compared with the prior art, has a conveyor belt arranged between two hot stuffy pits, and a screening net arranged above the conveyor belt. After the powdered slag containing iron slag is taken out from the hot stuffy pit by an excavator, it is directly poured onto the screening net. The screening net pre-screens the powdered slag. Large pieces of slag and iron slag are screened as overscreen and fall into a collector. Small pieces of powdered slag pass through the sieve holes of the screening net and fall onto the conveyor belt, and are transported to the slag treatment area along the conveyor belt for treatment. The utility model eliminates the need for a transport vehicle, and the powdered slag can be directly moved along the conveyor belt without considering the influence of the single capacity and moving speed of the transport vehicle. The transport efficiency is high, continuous transport is possible, and the use cost is low. Large pieces of slag and iron-containing slag are directly screened and treated at the screening net. The large pieces of slag are put back into the hot stuffy pit after screening and can quickly re-participate in the reaction, thus eliminating the need for transporting the large pieces of slag to a treatment site and then transporting the large pieces of slag from the treatment site to the hot stuffy pit, thereby accelerating the treatment efficiency and optimizing the overall treatment process. A slag hot pit discharging assembly is added to the system, and pre-screening treatment is carried out at the hot pit to screen out large pieces of slag, which are directly placed into the hot pit for reaction. The iron-containing slag is used for ironmaking, which saves the time of transportation after screening at the treatment site and speeds up the treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] 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.

[0035] Figure 1 A schematic diagram of the main structure of a steel slag hot pit discharging assembly provided by an embodiment of the utility model;

[0036] Figure 2 A schematic diagram of the structure of the screening assembly used in the embodiment of the utility model;

[0037] Figure 3 A schematic diagram of the structure of the transmission assembly used in the embodiment of the utility model;

[0038] Figure 4 A front view of a steel slag hot pit system provided by an embodiment of the utility model;

[0039] Figure 5 A schematic diagram of the structure of the dust removal assembly used in the embodiment of the utility model;

[0040] Figure 6 It is a schematic diagram of the assembly of the transmission component and the heat pit used in the embodiment of the utility model.

[0041] Description of reference numerals:

[0042] 1. Conveying assembly; 11. Conveying belt; 12. First conveying bracket; 13. First rotating shaft; 14. Second conveying bracket; 15. Second rotating shaft;

[0043] 2. Screening assembly; 21. Screening net; 22. Support frame;

[0044] 3. Collector; 31. Collecting tank;

[0045] 4. Hot and stuffy pit;

[0046] 5. Feeding assembly; 51. Feeding basket; 52. Feeding rack; 521. Slide rail; 53. Sliding module; 531. Roller;

[0047] 6. Dust removal assembly; 61. Screening dust collecting hood; 62. Hot and stuffy dust collecting hood; 621. Fixed hood; 622. Moving hood; 623. Guide rail; 624. Pulley; 63. Flue; 64. Valve;

[0048] 7. Sorting components. DETAILED DESCRIPTION

[0049] 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.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] Please also read Figures 1 to 6 , the steel slag hot stuffy pit discharge assembly provided by the utility model is now described. The steel slag hot stuffy pit discharge assembly includes a conveying component 1, a screening component 2 and a collector 3. The conveying component 1 includes a conveyor belt 11, and the two ends of the conveyor belt 11 respectively form a feed end and a discharge end, the feed end is set between two adjacent hot stuffy pits, the discharge end of the conveyor belt 11 extends to the steel slag processing area, and the feed end is lower than the discharge end; the screening component 2 has a screening net 21, and the screening net 21 is set above the feed end, and the conveyor belt 11 is used to carry the screened material of the screening net 21; the collector 3 is set below the screening net 21, and the collector 3 is used to collect the screened material of the screening net 21.

[0054] It should be noted that the feeding end of the conveyor belt 11 is lower than the discharging end, which can increase the friction between the conveyor belt 11 and the steel slag and prevent the steel slag from detaching from the conveyor belt 11 .

[0055] In specific implementation, a plurality of conveyor belts 11 may be spliced ​​together to move the slag from the hot pit to the slag treatment area.

[0056] It should be noted that in the slag processing area in the prior art, the steel slag will be ground and the powdered slag will be separated into iron powder and slag powder. Among them, large pieces of steel slag and iron-containing steel slag need to be taken out in advance and transported back to the hot pit for reaction.

[0057] Compared with the prior art, the steel slag hot pit discharging assembly provided in this embodiment has a conveyor belt 11 arranged between two hot pits, and a screening net 21 arranged above the conveyor belt. After the powdered steel slag containing iron slag is taken out from the hot pit by an excavator, it is directly poured onto the screening net 21. The screening net 21 pre-screens the powdered steel slag. Large pieces of steel slag and iron slag are screened as oversize and fall into the collector 3 for collection. Small pieces of powdered steel slag pass through the sieve holes of the screening net 21 and fall onto the conveyor belt 11, and are transported to the steel plant along the conveyor belt 11. The slag is processed in the slag treatment area; the present application eliminates the need for a transport vehicle, and the powdered steel slag can be directly moved with the conveyor belt 11, without considering the influence of the single capacity and moving speed of the transport vehicle, with high transportation efficiency, continuous transportation and low use cost; large pieces of steel slag and iron-containing steel slag are directly screened and processed at the screening net 21, and the large pieces of steel slag are put back into the hot pit after screening, and can quickly re-participate in the reaction, eliminating the need for transportation to the treatment site, and then from the treatment site to the hot pit. The transportation time has accelerated the processing efficiency and optimized the overall processing flow.

[0058] In some embodiments, see Figure 3 The conveying assembly 1 further includes a first conveying support 12, a first rotating shaft 13, a second conveying support 14 and a second rotating shaft 15. The first conveying support 12 is disposed between two adjacent hot and stuffy pits; the first rotating shaft 13 is rotatably disposed on the first conveying support 12; the second conveying support 14 is disposed in the slag processing area; the second rotating shaft 15 is rotatably disposed on the second conveying support 14, the second rotating shaft 15 is higher than the first rotating shaft 13, and the conveyor belt 11 is wound around the first rotating shaft 13 and the second rotating shaft 15.

[0059] During specific implementation, the first rotating shaft 13 or the second rotating shaft 15 is connected to a driver, and the driver drives the second rotating shaft 15 or the first rotating shaft 13 to rotate, thereby rotating the conveyor belt 11 .

[0060] In specific implementation, the conveying component 1 uses a belt conveyor, and the conveyor belt of the belt conveyor is used to transport powdered steel slag.

[0061] The conveyor assembly 1 provided in this embodiment has a simple structure and low manufacturing difficulty. The conveyor belt 11 is driven to rotate by the first rotating shaft 13 and the second rotating shaft 15, so that the conveyor belt 11 can drive the slag under screening to move and realize the transportation of slag. The first rotating shaft 13 is lower than the second rotating shaft 15, so that the conveyor belt gradually tilts upward in the direction close to the slag processing area, which can increase the friction between the conveyor belt and the slag and improve the transportation effect.

[0062] In some embodiments, see Figure 2The screening assembly 2 further includes a support frame 22, which spans the conveyor belt 11 along the width direction of the conveyor belt 11, and the screening net 21 is mounted on the support frame 22. The support frame 22 enables the powder screening net 21 to be mounted above the conveyor belt 11, ensuring that the slag under the screen can fall onto the conveyor belt 11, thereby realizing automatic transportation of the slag.

[0063] In some embodiments, see Figure 2 and Figure 1 The screening net 21 gradually tilts upward along the conveying direction of the conveyor belt 11, and the lower end of the screening net 21 is located directly above the first rotating shaft 13, and is provided with a drop opening. The screening net 21 is tilted so that after the slag is screened, the screened material can roll down along the inclined surface and roll down from the drop opening into the collector 3 to achieve automatic collection.

[0064] In some embodiments, see Figure 1 The collector 3 includes a bottom plate and a horizontal baffle plate arranged around the outer periphery of the bottom plate. The horizontal baffle plate and the bottom plate are combined to form a collecting trough 31 with an opening at the top. The opening of the collecting trough 31 is located below the falling end of the screening net 21 to receive the screened material of the screening net 21. The collecting trough 31 can collect the screened material. After a certain degree of collection, the staff will take out the screened material, transfer the large iron-containing steel slag to ironmaking, and move the large ordinary steel slag to the hot pit for reaction. The collecting trough 21 is located between the two hot pits, with fast moving efficiency, which reduces the overall transportation time.

[0065] During specific implementation, the horizontal baffle and the bottom plate are high temperature resistant plates.

[0066] Based on the same inventive concept, refer to Figures 4 to 6 The present application also provides a steel slag hot pit system, comprising a plurality of hot pits 4 arranged in parallel along a first horizontal direction, a feeding assembly 5, a plurality of steel slag hot pit discharging assemblies as in any one of the above embodiments, and a dust removal assembly 6. A gap is formed between two adjacent hot pits 4; the feeding assembly 5 has a plurality of feeding baskets 51 corresponding to the hot pits 4 one by one, and the feeding baskets 51 can be raised and lowered to transport materials into the hot pits 4; in the steel slag hot pit discharging assembly, the feeding end of the conveyor belt 11 is arranged between the corresponding gaps; the dust removal assembly 6 is arranged above the hot pit 4 and the feeding end, and the dust removal assembly 6 is used to collect smoke and dust in the hot pit 4 and the steel slag hot pit discharging assembly.

[0067] In specific implementation, the hot stuffy pit 4 includes a hot stuffy pit and a hot stuffy cover. The steel slag is poured into the hot stuffy pit through the feeding basket 51, and the hot stuffy cover is covered after water is added, so that the steel slag is pulverized.

[0068] During specific implementation, a reverse immersion device is set at the bottom of the hot pit. When the pit is filled with steel slag, water enters from the bottom of the pit, and the water flow rate can be adjusted from 0 to the maximum over time.

[0069] It should be noted that the present application may also only provide one feeding basket 51 , which can be moved along the first horizontal direction or the second horizontal direction, and can be raised and lowered, so as to replenish materials to multiple hot pits 4 respectively.

[0070] Compared with the prior art, the slag hot pit system provided in this embodiment has a conveyor belt 11 arranged between two hot pits, and a screening net 21 arranged above the conveyor belt. After the powdered slag containing iron slag is taken out from the hot pit by an excavator, it is directly poured onto the screening net 21. The screening net 21 pre-screens the powdered slag. Large pieces of slag and iron slag are screened into oversize and fall into the collector 3. Small pieces of powdered slag pass through the sieve holes of the screening net 21 and fall onto the conveyor belt 11, and are transported to the slag treatment area along the conveyor belt 11. The steel slag is directly transported to the processing area; the present application eliminates the need for a transport vehicle, and the powdered steel slag can be directly moved with the conveyor belt 11, without considering the influence of the transport vehicle's single capacity and moving speed, with high transportation efficiency, continuous transportation, and low use cost; large pieces of steel slag and iron-containing steel slag are directly screened and processed at the screening net 21, and the large pieces of steel slag are put back into the hot pit after screening, and can quickly re-participate in the reaction, eliminating the transportation time to the processing site, and then from the processing site to the hot pit, thereby speeding up the processing efficiency and optimizing the overall processing flow. A steel slag hot pit discharging assembly is added to the present system, and pre-screening treatment is performed at the hot pit 4 to screen out large pieces of steel slag, and the large pieces of steel slag are directly placed in the hot pit 4 for reaction, and the iron-containing steel slag is used for ironmaking, eliminating the time for transportation after screening at the processing site, and speeding up the processing efficiency.

[0071] In some embodiments, see Figure 4 and Figure 5 The feeding assembly 5 also includes a feeding rack 52 and a sliding module 53. The feeding rack 52 is erected on the ground and fixed relatively to the hot pit 4. A slide rail 521 is provided on the top of the feeding rack 52. The slide rail 521 extends along the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction. A roller 531 is provided at the bottom of the sliding module 53. The roller 531 and the slide rail 521 are in rolling cooperation. A winding rope is wound around the periphery of the sliding module 53, and the bottom end of the winding rope is connected to the feeding basket 51. Driven by the roller 531, the sliding module 53 can slide along the second horizontal direction to drive the feeding basket 51 to move. The feeding basket 51 can move up and down to deliver the slag to the hot pit 4 to complete the feeding work.

[0072] During specific implementation, the sliding module 53 is a winch, and the bottom end of the rope of the winch is connected to the feeding basket 51 .

[0073] During specific implementation, the feeding basket 51 adopts an overhead crane.

[0074] In some embodiments, see Figures 4 to 6The dust removal assembly 6 includes a screening dust collecting hood 61, a heat-stifling dust collecting hood 62 and a dust collector body (not shown). The screening dust collecting hood 61 is arranged above the screening net 21 in the steel slag heat-stifling pit discharging assembly; the heat-stifling dust collecting hood 62 is arranged above the heat-stifling pit 4; and the dust collector body is connected to the screening dust collecting hood 61 and the heat-stifling dust collecting hood 62 respectively.

[0075] Optional. The dust collector body adopts wet electric processor.

[0076] During specific implementation, the screening dust collecting hood 61 and the heat-suffocating dust collecting hood 62 are connected to the dust collector body through the flue 63 respectively.

[0077] In this embodiment, the screening dust collecting hood 61 is arranged above the screening net 21 to collect the smoke generated during the screening process, and the hot stuffy dust collecting hood 62 is arranged above the hot stuffy pit 4 to collect steam and smoke from the steel slag. The smoke collected by the screening dust collecting hood 61 and the hot stuffy dust collecting hood 62 are all passed into the dust collector body to achieve dust removal. The dust removal component 6 has a simple structure and a large processing range.

[0078] In some embodiments, exhaust ports are provided around the inner wall of the hot stuffy pit 4, and the exhaust ports are connected to the dust collector body through pipes. Multiple exhaust ports are provided to evenly collect dust and smoke generated when slag is loaded in the hot stuffy pit.

[0079] In some embodiments, see Figures 4 to 6 The hot stuffy dust collecting cover 62 includes a fixed cover 621 and a movable cover 622. The movable cover 622 and the fixed cover 621 are arranged in sequence and side by side above the hot stuffy pit 4 along the conveying direction of the conveyor belt 11. Guide rails 623 are arranged on both sides of the movable cover 622. The long axis of the guide rails 623 is perpendicular to the first horizontal direction. Pulleys 624 are respectively provided on both sides of the movable cover 622 to roll with the guide rails 623 on the corresponding side. The movable cover 622 can slide along the second horizontal direction to avoid the movement of the feeding car 51, so as to ensure that the feeding car 51 can smoothly fill the slag into the hot stuffy pit 4.

[0080] During specific implementation, the fixed hood 621 , the movable hood 622 , the screening dust collecting hood 61 and the dust collector body are respectively connected, and valves 64 are respectively provided on the flue 63 to control the opening or closing of the fixed hood 621 , the movable hood 622 and the screening dust collecting hood 61 .

[0081] In specific implementation, the sliding module 53 drives the feeding basket 51 to pour slag into the hot stuffy pit, opens the hot stuffy cover (turns about 85 degrees), and the movable cover 622 moves along the second horizontal direction to make room for the feeding basket 51 to pour slag. After the slag is poured, the movable cover 622 returns to its position, and the movable cover 622 and the fixed cover 621 jointly collect the escaping smoke and dust from the hot stuffy pit 4.

[0082] The flip heat-stifling cover, dust collecting hood, fixed hood 621, movable hood 622, screening dust collecting hood 61 and dust collector body together constitute a heat-stifling dust removal system to eliminate unorganized emissions from various dust-raising points. The wet electrostatic precipitator can ensure that the particle emission concentration at the chimney outlet is ≤10mg / Nm3.

[0083] The total air volume of the dust collector body is fixed. When the feeding basket 51 pours the steel slag into the hot stuffy pit, the designed dust removal air volume is ≥20×104m3 / h; when the hot stuffy pit is full of steel slag and needs to be filled with water for hot stuffy, the designed dust removal air volume is ≤10×104m3 / h; after the steel slag in the hot stuffy pit is stuffed well, the designed dust removal air volume is ≤10×104m3 / h when the slag is discharged. Each branch pipeline is equipped with an electric valve and a flow meter. The actual dust removal air volume is adjusted at any time according to the actual working conditions in production, and the dust removal air volume of the hot stuffy pit for slag loading is given priority.

[0084] When the feeding basket 51 pours slag into the pit, the movable hood 622 and the heat stuffy cover are opened, and the maximum air volume is used; during the heat stuffy process, the movable hood 622 and the heat stuffy cover are closed, and a larger air volume is actually used 20 minutes before the start of water injection, and a smaller air volume is used after 20 minutes; during the slag discharge process, the movable hood 622 moves (i.e. the opening is closed to facilitate dust collection). At this time, the water content of the steel slag is relatively high, there is no dust, and it is mainly water vapor overflowing, so a smaller air volume is used.

[0085] In some embodiments, see Figures 4 to 6 The slag hot pit system also includes a sorting component 7, which includes a sorting vehicle, which is used to move the material in the collector 3 in the slag hot pit discharging assembly to the hot pit 4. The sorting vehicle can select the iron-containing slag from the large slag, and then move the remaining slag back to the hot pit for reaction, so as to pulverize the large slag and ensure the pulverization rate of the slag.

[0086] During specific implementation, the sorting vehicle is provided with a shovel and a suction cup. The suction cup can suck out the iron-containing slag, and the shovel can shovel out the remaining slag and shovel it into the hot pit.

[0087] 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 steel slag hot pit discharging assembly, characterized in that: include: The conveying assembly includes a conveyor belt, wherein two ends of the conveyor belt respectively form a feed end and a discharge end, wherein the feed end is arranged between two adjacent hot pits, and the discharge end of the conveyor belt extends to the slag processing area, and the feed end is lower than the discharge end; A screening assembly, comprising a screening net, wherein the screening net is arranged above the feed end, and the conveyor belt is used for carrying the screened material of the screening net; as well as The collector is arranged below the screening net and is used to collect the screened material of the screening net.

2. The steel slag hot pit discharging assembly according to claim 1, characterized in that: The transmission component also includes: A first transmission support is arranged between two adjacent heat pits; A first rotating shaft, rotatably disposed on the first conveying bracket; A second conveying support is provided in the slag processing area; and The second rotating shaft is rotatably disposed on the second conveying support, the second rotating shaft is higher than the first rotating shaft, and the conveyor belt is wound around the first rotating shaft and the second rotating shaft.

3. The steel slag hot pit discharging assembly according to claim 2, characterized in that: The screening assembly also includes a support frame, which spans across the conveyor belt along the width direction of the conveyor belt, and the screening net is mounted on the support frame.

4. The steel slag hot pit discharging assembly as claimed in claim 2, characterized in that: The screening net is gradually inclined upward along the transport direction of the conveyor belt, the lower end of the screening net is located directly above the first rotating shaft, and is provided with a drop opening.

5. The steel slag hot pit discharging assembly according to claim 1, characterized in that: The collector comprises a bottom plate and a horizontal baffle plate arranged around the outer periphery of the bottom plate, wherein the horizontal baffle plate and the bottom plate are combined to form a collecting trough with an opening at the top, and the opening of the collecting trough is located below the falling end of the screening net.

6. A steel slag hot pit system, characterized in that: include: A plurality of heat pits are arranged in parallel along a first horizontal direction, with a gap formed between two adjacent heat pits; A feeding assembly, comprising a plurality of feeding baskets corresponding to the heat pits one by one, the feeding baskets being able to be raised and lowered to transport materials into the heat pits; A plurality of steel slag hot pit discharging assemblies according to any one of claims 1 to 5, wherein the feed end of the conveyor belt is arranged at a corresponding gap; and A dust removal component is arranged above the hot stuffy pit and the feed end, and the dust removal component is used to collect smoke and dust in the hot stuffy pit and in the steel slag hot stuffy pit discharge assembly.

7. The steel slag hot pit system according to claim 6, characterized in that: The feeding assembly also includes: A feeding rack is erected on the ground and fixed relative to the heat pit, a slide rail is provided on the top of the feeding rack, and the slide rail extends along a second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction; and The sliding module has a roller at the bottom, and the roller is in rolling cooperation with the slide rail. A winding rope is wound around the periphery of the sliding module, and the bottom end of the winding rope is connected to the feeding basket.

8. The steel slag hot pit system according to claim 6, characterized in that: The dust removal component comprises: A screening dust collecting hood, which is arranged above the screening net; A heat-suffocating dust collecting hood is arranged above the heat-suffocating pit; and The dust collector body is communicated with the screening dust collecting hood and the heat-suffocating dust collecting hood respectively.

9. The steel slag hot pit system according to claim 8, characterized in that: The hot and stuffy dust collecting hood includes a fixed hood and a movable hood, and the movable hood and the fixed hood are arranged sequentially and side by side above the hot and stuffy pit along the conveying direction of the conveyor belt. Guide rails are provided on both sides of the movable hood, and the long axis of the guide rails is perpendicular to the first horizontal direction. Pulleys are respectively provided on both sides of the movable hood, which are respectively rollingly matched with the guide rails on the corresponding sides.

10. The steel slag hot pit system according to claim 6, characterized in that: The steel slag hot pit system also includes a sorting component, which includes a sorting vehicle. The sorting vehicle is used to move the material in the collector of the steel slag hot pit discharging assembly into the hot pit.

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