Steel slag cooling device and method

Abstract

The invention relates to a steel slag cooling device and method, and belongs to the technical field of metallurgical steelmaking equipment and methods. According to the technical scheme, a steel slag dredging system (2) is installed on a supporting frame (1), the steel slag dredging system (2) comprises a lifting arm (10), dredging fingers (11) and a connecting plate (12), the dredging fingers (11) are connected with the lifting arm (10) through the connecting plate (12), the steel slag dredging system (2) is driven by a hydraulic driving system (3), and the dredging fingers (11) are inserted into a slag ladle (4). The method has the beneficial effects that the procedure of dredging the steel slag before hot disintegration is added, the steel slag is dredged, a uniform water flow channel is formed, the problem that cooling water flows along with gaps of the steel slag is solved, the steel slag at all parts can be synchronously cooled, the temperature reduction time is greatly shortened, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of steel slag cooling device and method, belong to metallurgical steelmaking equipment and method technical field. BACKGROUND

[0002] Steel slag is the waste produced in steel production, in order to reduce the environmental pollution of steel plant, ensure that steel slag treatment meets the principle of "less investment, fast output, steel slag benefit maximization, improve the amount of steel eaten", many steel plants begin to look for high-quality steel slag treatment scheme in the market. Steel slag treatment is generally carried out according to three-step process, the first step of steel slag from liquid to solid steel slag (hot soak) treatment production line; The second step "crushing-screening-magnetic separation" steel slag secondary treatment system; The third step steel slag grinding and direct use in market concrete and other fields, for recycling, three-step process can completely realize the "zero" discharge of steel slag. The first step of steel slag treatment adopts roll crushing process, which can be divided into liquid steel slag, slag tank tilting, roll crushing, hot soak, screening and conveying, to achieve the recycling economic goal of steel slag resource, and realize the unity of social, economic and environmental benefits of construction project.

[0003] In the process of steel slag primary treatment, the hot soak process has the problems of poor water flow, uneven, poor cooling effect and poor crushing effect. The poor cooling effect can cause the treatment time to be prolonged, and there may be red slag, which can cause belt burning problem during belt transportation SUMMARY

[0004] The present application aims to provide a kind of steel slag cooling device and method, by increasing the dredging process of steel slag before hot soak, the steel slag is dredged, forming uniform water flow channel, changing the problem of cooling water flowing through the gap with steel slag, which can make the steel slag in each part be cooled synchronously, greatly reduce the temperature drop time, improve work efficiency, and effectively solve the above problems existing in the background art.

[0005] The technical scheme of the present application is: a kind of steel slag cooling device, including support frame, steel slag dredging system, hydraulic drive system and slag tank, the steel slag dredging system is installed on support frame, steel slag dredging system includes lifting arm, dredging finger and connecting plate, dredging finger is connected with lifting arm by connecting plate, steel slag dredging system is driven by hydraulic drive system, the position of connecting plate and slag tank is matched, and dredging finger is inserted into the slag tank.

[0006] The number of the dredging finger is more than one, and the dredging fingers are arranged at intervals on the connecting plate. The diameter, length and spacing of the dredging fingers are matched with the shape and size of the slag tank.

[0007] The hydraulic drive system comprises a hydraulic cylinder and a hydraulic station, the hydraulic cylinder is connected with the hydraulic station, and the stroke length of the hydraulic cylinder is matched with the size of the slag ladle, the length of the dredging finger and the depth required to be inserted.

[0008] The hydraulic station is provided with a hydraulic overflow valve.

[0009] The support frame comprises a body frame, a positioning frame, a limiting support, an upper limiting portion and a lower limiting portion, the positioning frame is installed in the body frame, the width of the positioning frame is matched with the connecting plate, the limiting support is installed on the positioning frame, the upper limiting portion and the lower limiting portion are movably arranged on the limiting support, the connecting plate is arranged between the upper limiting portion and the lower limiting portion, and the positions of the upper limiting portion and the lower limiting portion are matched with the slag amount and the slag shell thickness of the slag ladle.

[0010] Each dredging finger is detachably connected with the connecting plate.

[0011] The dredging finger has a needle shape and a small taper structure.

[0012] A steel slag cooling method comprises the following steps: (1) according to the shape and size of the slag ladle, a connecting plate is made, appropriate dredging fingers are selected and installed on the connecting plate, the connecting plate and the lifting arm are connected to form a dredging system, and the dredging system is installed on the support frame; (2) the slag ladle car is driven to a steel slag dredging position, and the slag ladle is aligned with the connecting plate; (3) the dredging system is moved up and down, the positions of the upper limiting portion and the lower limiting portion are adjusted through the limiting support on the support frame, and the movement range of the dredging system reaches the best dredging effect; (4) the hydraulic drive system is adjusted to ensure that a certain pressure is reached and then overflow; (5) the dredging system is controlled to move up and down by the hydraulic drive system, the steel slag in the slag ladle is dredged by the dredging fingers, and uniform water channels are formed in the steel slag.

[0013] The dredging finger has a needle shape and a small taper structure.

[0014] Each dredging finger is detachably connected with the connecting plate.

[0015] The beneficial effects of the present application are: by adding a dredging process for steel slag before hot sweating, the steel slag is dredged to form uniform water flow channels, the problem of cooling water flowing through the gaps in the steel slag is changed, the steel slag in each part can be cooled synchronously, the temperature drop time is greatly reduced, and the work efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of the water flow state in the slag ladle without dredging according to the present application; Figure 2 is a schematic diagram of the water flow state in the slag ladle after dredging according to the present application; Figure 3 is a schematic diagram of the overall structure of the present application; In the diagram: 1. Support frame; 2. Slag dredging system; 3. Hydraulic drive system; 4. Slag tank; 5. Main frame; 6. Positioning frame; 7. Limiting bracket; 8. Upper limit; 9. Lower limit; 10. Lifting arm; 11. Dredging finger; 12. Connecting plate; 13. Hydraulic cylinder; 14. Hydraulic station. Detailed Implementation

[0017] To make the purpose, technical solutions, and advantages of the invention's embodiments clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only a small part of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0018] A steel slag cooling device includes a support frame 1, a steel slag unblocking system 2, a hydraulic drive system 3, and a slag tank 4. The steel slag unblocking system 2 is installed on the support frame 1 and includes a lifting arm 10, unblocking fingers 11, and a connecting plate 12. The unblocking fingers 11 are connected to the lifting arm 10 through the connecting plate 12. The steel slag unblocking system 2 is driven by the hydraulic drive system 3. The connecting plate 12 is positioned to match the slag tank 4, and the unblocking fingers 11 are inserted into the slag tank 4.

[0019] The number of the unblocking fingers 11 is one or more, and the unblocking fingers 11 are spaced apart on the connecting plate 12. The diameter, length and spacing of the unblocking fingers 11 match the shape and size of the slag tank 4.

[0020] The hydraulic drive system 3 includes a hydraulic cylinder 13 and a hydraulic station 14. The hydraulic cylinder 13 is connected to the hydraulic station 14. The stroke length of the hydraulic cylinder 13 is matched with the size of the slag pot 4, the length of the unblocking finger 11, and the required insertion depth.

[0021] The hydraulic station 14 is equipped with a hydraulic relief valve.

[0022] The support frame 1 includes a main frame 5, a positioning frame 6, a limiting bracket 7, an upper limit 8, and a lower limit 9. The positioning frame 6 is installed inside the main frame 5, and its width matches the connecting plate 12. The limiting bracket 7 is installed on the positioning frame 6. The upper limit 8 and the lower limit 9 are movably set on the limiting bracket 7. The connecting plate 12 is set between the upper limit 8 and the lower limit 9. The positions of the upper limit 8 and the lower limit 9 match the slag quantity and the slag shell thickness of the slag pot 4.

[0023] Each unblocking finger 11 is detachably connected to the connecting plate 12.

[0024] The unblocking finger 11 is needle-shaped with a small tapered structure.

[0025] A method for cooling steel slag includes the following steps: (1) According to the shape and size of the slag tank, make a connecting plate, select a suitable dredging finger and install it on the connecting plate. The connecting plate is connected with the lifting arm to form a dredging system and is installed on the support frame; (2) Drive the slag tank truck to the steel slag dredging position and align the slag tank with the connecting plate; (3) Move the dredging system up and down and adjust the upper and lower limit positions through the limit bracket on the support frame so that the movement range of the dredging system reaches the best dredging effect; (4) Adjust the hydraulic drive system to ensure that overflow occurs after reaching a certain pressure; (5) The steel slag dredging system is controlled by the hydraulic drive system to move up and down and use the dredging finger to dredge the steel slag in the slag tank and form a uniform waterway in the steel slag.

[0026] The unblocking finger has a needle-like shape and a small tapered structure.

[0027] Each unblocking finger is detachably connected to the connecting plate.

[0028] In practical applications, the connecting plate 12 is designed according to the shape and size of the slag tank 4. Appropriate unblocking fingers 11 are selected and installed on the connecting plate 12. A certain number of unblocking fingers 11 are spaced out on the steel slag unblocking system 2. After assembling the unblocking system 2, it is installed on the support frame 1. After the slag tank truck is driven to the steel slag unblocking position, the slag tank 4 is aligned with the connecting plate 12. Then the unblocking system 2 is moved up and down. The upper limit 8 and lower limit 9 are adjusted by the limit bracket 7 so that the movement range of the unblocking system 2 achieves the best unblocking effect. The steel slag unblocking system 2 is controlled by the hydraulic drive system 3 to move up and down. The unblocking fingers 11 are used to unblock the steel slag in the slag tank 4, forming a uniform water channel in the steel slag. This facilitates the uniform temperature drop of the steel slag in various parts of the slag tank, greatly improving the cooling time and cooling effect of the steel slag.

[0029] The unblocking finger 11 is designed in the shape of a needle with a certain taper. This taper can reduce the resistance during the insertion of the steel slag, reduce energy consumption, and reduce the sticking of steel slag when the unblocking finger is pulled out, making it easier for the next operation. At the same time, the unblocking finger can be selected in the optimal form according to different working conditions.

[0030] The unblocking finger 11 is connected to the lifting arm 10 through the connecting plate 12, which allows for the individual replacement of each unblocking finger, thereby maximizing the service life of each unblocking finger. At the same time, the length, material and style of the unblocking fingers can be arranged independently according to different usage scenarios or different types of steel slag, realizing modular assembly and use.

[0031] During use, the lifting of the dredging finger must have a complete electrical and hydraulic control system. The upper limit 8 and lower limit 9 are used as the first guarantee, and the hydraulic station 14 is equipped with a hydraulic overflow valve. The hydraulic overflow control is used as the second guarantee to ensure the safety of the equipment during use.

[0032] This invention addresses the issue of cooling water flowing through the gaps in the slag by adding a clearing process to the steel slag before hot quenching. This clearing process creates uniform water flow channels, preventing the cooling water from flowing randomly through the gaps in the slag. In contrast, cooling water in slag pots that have not undergone clearing processes flows randomly... Figure 1 In some areas, the lack of cooling water resulted in uneven cooling. Areas receiving cooling water cooled rapidly, while areas without cooling water cooled slowly. Short quenching times could leave high-temperature slag within the steel slag, and the entire slag bin required a long cooling time, significantly reducing production efficiency. However, after the slag bin was cleared, water flowed evenly through the channels created by the clearing device. Figure 2 By ensuring the uniform distribution of water flow, the steel slag in each part can be cooled down simultaneously, greatly reducing the cooling time and improving work efficiency.

Claims

1. A steel slag cooling device, characterized in that: The system includes a support frame (1), a steel slag dredging system (2), a hydraulic drive system (3), and a slag tank (4). The steel slag dredging system (2) is installed on the support frame (1). The steel slag dredging system (2) includes a lifting arm (10), a dredging finger (11), and a connecting plate (12). The dredging finger (11) is connected to the lifting arm (10) through the connecting plate (12). The steel slag dredging system (2) is driven by the hydraulic drive system (3). The connecting plate (12) is matched with the position of the slag tank (4). The dredging finger (11) is inserted into the slag tank (4).

2. The steel slag cooling device according to claim 1, characterized in that: The number of the unblocking fingers (11) is more than one. The unblocking fingers (11) are spaced apart on the connecting plate (12). The diameter, length and spacing of the unblocking fingers (11) match the shape and size of the slag tank (4).

3. The steel slag cooling device according to claim 1, characterized in that: The hydraulic drive system (3) includes a hydraulic cylinder (13) and a hydraulic station (14). The hydraulic cylinder (13) is connected to the hydraulic station (14). The stroke length of the hydraulic cylinder (13) is matched with the size of the slag pot (4), the length of the unblocking finger (11), and the depth to be inserted.

4. The steel slag cooling device according to claim 3, characterized in that: The hydraulic station (14) is equipped with a hydraulic relief valve.

5. The steel slag cooling device according to claim 1, characterized in that: The support frame (1) includes a main frame (5), a positioning frame (6), a limiting bracket (7), an upper limit (8), and a lower limit (9). The positioning frame (6) is installed inside the main frame (5), and its width matches the connecting plate (12). The limiting bracket (7) is installed on the positioning frame (6). The upper limit (8) and the lower limit (9) are movably set on the limiting bracket (7). The connecting plate (12) is set between the upper limit (8) and the lower limit (9). The positions of the upper limit (8) and the lower limit (9) match the slag quantity and the slag shell thickness of the slag pot (4).

6. The steel slag cooling device according to claim 1, characterized in that: Each unblocking finger (11) is detachably connected to the connecting plate (12).

7. The steel slag cooling device according to claim 1, characterized in that: The unblocking finger (11) is needle-shaped with a small tapered structure.

8. A method for cooling steel slag, characterized in that... The process includes the following steps: (1) According to the shape and size of the slag tank, make a connecting plate, select a suitable dredging finger and install it on the connecting plate. The connecting plate and the lifting arm are connected to form a dredging system and installed on the support frame; (2) Drive the slag tank truck to the steel slag dredging position and align the slag tank with the connecting plate; (3) Move the dredging system up and down and adjust the upper and lower limit positions through the limit bracket on the support frame to achieve the best dredging effect in the movement range of the dredging system; (4) Adjust the hydraulic drive system to ensure that it reaches a certain pressure before overflowing; (5) The steel slag dredging system is controlled by the hydraulic drive system to move up and down and use the dredging finger to dredge the steel slag in the slag tank and form a uniform waterway in the steel slag.

9. A method for cooling steel slag according to claim 8, characterized in that: The unblocking finger has a needle-like shape and a small tapered structure.

10. A method for cooling steel slag according to claim 8, characterized in that: Each unblocking finger is detachably connected to the connecting plate.

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