Self-propelled slag discharging type bottom filter tank steam collecting device, bottom filter tank and working method of bottom filter tank

Abstract

The invention discloses a self-propelled slag discharging type bottom filter tank steam collecting device, a bottom filter tank and a working method of the bottom filter tank, belongs to the technical field of blast furnace water slag flushing, and aims to solve the problem that slag particles scattered by a grab bucket of a crown block for a long time easily crush a movable steam collecting cover. The self-propelled slag discharging type bottom filter tank steam collecting device comprises a supporting frame (4), a top sealing cover (5) and a walking driving mechanism (2), the self-propelled slag discharging type bottom filter tank steam collecting device comprises a self-propelled sealing cover (61), a self-propelled sealing cover walking driving device (63) and a slag scraping plate (64), and when the self-propelled sealing cover moves along a longitudinal steel rail (61) during slag discharging, the self-propelled sealing cover walks along the longitudinal steel rail (61), the self-propelled sealing cover walks along the self-propelled sealing cover walking driving device (63) and the slag scraping plate (64). And the slag scraping plate can scrape off slag particles falling on the self-propelled sealing cover plate and enable the slag particles to fall into the bottom filter tank, so that the condition that the movable steam collecting cover is easily crushed by accumulated slag can be avoided, the working environment of a blast furnace water slag area is also improved, and equipment guarantee is provided for realizing green factories.

Description

Technical Field

[0001] The invention relates to the technical field of blast furnace water slag flushing, in particular to a self-propelled slag unloading type bottom filter tank steam collection device, a bottom filter tank, and more particularly to a working method of the bottom filter tank. Background Art

[0002] High-temperature liquid slag is the main by-product of blast furnace smelting, with extremely high solid waste resource recycling value and economic benefits. At present, the mainstream slag treatment method for domestic and foreign steel enterprises is the water slag flushing process. The slag is crushed and quenched by high-speed water flow, turning it into a loose slag-water mixture (hereinafter referred to as water slag), which flows into the filter tank through the slag flushing ditch. The liquid water is filtered through the filter layer in the filter tank, leaving solid and wet slag particles on the top of the filter material, and then the slag particles are grabbed by a bridge grab crane and transported by car or belt.

[0003] Liquid slag has a high temperature (1350℃-1500℃). A large amount of slag continues to undergo intense heat transfer during the water quenching and granulation process, generating a large amount of steam. Especially in winter, when the ambient temperature is low and the ambient temperature difference is large, more steam is generated. In order to prevent the generated steam from escaping and being directly discharged, a steam collection device is installed on the top of the filter tank. However, during the slag grabbing process, the slag particles in the grab bucket will fall, and the slag accumulation on the top of the steam collection device is relatively serious. The equipment structure is easily damaged, and the steam cannot be effectively collected.

[0004] Specifically, Figure 1 As shown, the bottom filter tank 1 includes a first tank body 11 and a second tank body 12 arranged on the left and right, and the bottom filter tank also includes a mobile steam collecting hood 15, which can move left and right on the first tank body 11 and the second tank body 12, and a slag collecting bucket 13 is arranged on the right side of the second tank body 12. During the process of the overhead crane grab bucket 14 grabbing the slag particles in the first tank body 11 and transporting them to the slag collecting bucket 13, the slag particles in the overhead crane grab bucket 14 will be spilled onto the mobile steam collecting hood 15 on the second tank body 12. After long-term operation, the top of the mobile steam collecting hood 15 will have serious slag accumulation and will be easily crushed. Summary of the invention

[0005] In order to solve the problem that the slag particles scattered by the overhead crane grab bucket for a long time are easy to crush the mobile steam collection hood, the present invention provides a self-propelled slag unloading bottom filter tank steam collection device, a bottom filter tank and a working method thereof. The self-propelled slag unloading bottom filter tank steam collection device comprises a self-propelled sealing cover, and the slag scraper plate can scrape the slag particles fallen on the sealing cover plate and make them fall into the bottom filter tank, which can not only avoid the situation that the mobile steam collection hood is easily crushed by the accumulated slag, but also improve the working environment of the blast furnace slag area, and provide equipment guarantee for realizing a green factory.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A self-propelled slag unloading bottom filter tank steam collection device comprises a support frame, a top sealing cover and a traveling drive mechanism, wherein the top sealing cover comprises a fixed sealing cover area and a slag leakage port arranged in a front-to-back direction, a self-propelled sealing cover is arranged on the slag leakage port, and the self-propelled sealing cover comprises a sealing cover plate, a movable bracket and a translation drive mechanism connected in sequence, the translation drive mechanism can drive the sealing cover plate to move in a horizontal direction, and the sealing cover plate can close the slag leakage port.

[0008] A bottom filter tank comprises a first tank body and a second tank body arranged on the left and right. The bottom filter tank also comprises the above-mentioned self-propelled slag unloading type bottom filter tank steam collecting device, the self-propelled slag unloading type bottom filter tank steam collecting device can move left and right on the first tank body and the second tank body, and the self-propelled slag unloading type bottom filter tank steam collecting device can close the upper end of the first tank body or the upper end of the second tank body.

[0009] A working method of the bottom filter tank comprises the following steps in sequence:

[0010] Step 1, the steam collection device of the self-propelled slag unloading bottom filter tank moves to the right to the second tank body, the sealing plate closes the slag leakage port, the slag-water mixture enters the second tank body for slag-water filtration, the overhead crane grab grabs the slag particles in the first tank body and transports them to the slag particle collection bucket. During the process of the overhead crane grab moving directly above the second tank body, the overhead crane grab is only located directly above the sealing plate, and the overhead crane grab is not located directly above the fixed sealing area;

[0011] Step 2: The sealing plate leaves the slag outlet, the slag outlet is exposed, and the scraping plate scrapes off the slag particles falling on the sealing plate, and the scraped slag particles fall into the second tank body from the slag outlet;

[0012] Step 3, the self-propelled slag unloading bottom filter tank steam collection device moves to the left to the first tank body, the sealing cover plate closes the slag leakage port, the slag-water mixture enters the first tank body for slag-water filtration, the overhead crane grabs the slag particles in the second tank body and transports them to the slag particle collection bucket.

[0013] The beneficial effects of the present invention are as follows: the self-propelled slag unloading bottom filter tank steam collection device contains a self-propelled cover, and the scraper plate can scrape the slag particles that fall on the cover plate and make them fall into the bottom filter tank, thereby avoiding the steam collection device being easily crushed by accumulated slag and easily damaged by collision with a crane grab bucket. The present invention has the advantages of more feasible solutions, more stable and reliable operation, faster and more convenient maintenance, etc., which improves the working environment in the blast furnace slag area and provides equipment guarantee for the realization of a green factory. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings in the specification, which constitute a part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0015] Figure 1 It is a top view schematic diagram of a bottom filter tank and a steam collection device in the prior art.

[0016] Figure 2 It is a three-dimensional schematic diagram of the self-propelled slag-discharging bottom filter tank steam collection device of the present invention.

[0017] Figure 3 It is a partial overall schematic diagram of a support frame, a self-propelled cover and a top cover.

[0018] Figure 4 It is an exploded schematic diagram of a support frame, a self-propelled cover and a top cover.

[0019] Figure 5 It is a front view schematic diagram of the bottom filter tank of the present invention.

[0020] Figure 6 It is Figure 5 an enlarged schematic diagram of part A in

[0021] Explanation of reference numerals:

[0022] 1. Bottom filter tank; 2. Travel driving mechanism; 3. Horizontal rail; 4. Support frame; 5. Top cover; 6. Self-propelled cover; 7. Slag particles; 8. Scraper; 9. Sealing curtain;

[0023] 11. First tank body; 12. Second tank body; 13. Slag particle collection hopper; 14. Overhead crane grab; 15. Mobile steam collection cover;

[0024] 41. Cross beam; 42. Longitudinal beam;

[0025] 51. Fixed cover area; 52. Slag leakage port; 53. Top plate; 54. End plate;

[0026] 61. Longitudinal rail; 62. Mobile support; 63. Translation driving mechanism; 64. Cover plate. Detailed implementation manners

[0027] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0028] For the convenience of understanding and description, an absolute positional relationship is adopted in the following description of the present invention. Without special explanation, the orientation word "up" represents Figure 5 the upper side direction in Figure 5 the orientation word "down" represents Figure 5 the lower side direction in Figure 5In the right direction, the orientation word "front" refers to the direction perpendicular to the Figure 5 paper surface of Figure 5 and pointing towards the inside of the paper surface, and the orientation word "rear" refers to the direction perpendicular to the

[0029] paper surface of Figures 2 to 6 and pointing towards the outside of the paper surface. The present invention is described from the observation perspective of the reader or user, but the above orientation words should not be understood or interpreted as limiting the protection scope of the present invention. Regarding the dimensions and angles of the components therein, those skilled in the art can specifically determine them according to actual needs.

[0030] As shown in

[0031] A self-propelled slag-discharging bottom-filter steam collection device according to an embodiment of the present invention includes a support frame 4, a top cover 5, and a traveling drive mechanism 2. The top cover 5 includes a fixed cover area 51 and a slag leakage port 52 arranged in the front-rear direction. A self-propelled cover 6 is provided on the slag leakage port 52. The self-propelled cover 6 includes a cover plate 64, a moving bracket 62, and a translation drive mechanism 63 connected in sequence. The translation drive mechanism 63 can drive the cover plate 64 to move back and forth, and the cover plate 64 can close the slag leakage port 52.

[0032] The support frame 4 has a rectangular structure and includes a cross beam 41 and a longitudinal beam 42. The cross beam 41 extends in the left-right direction, and the longitudinal beam 42 extends in the front-rear direction. The lower end of the top cover 5 is hermetically connected to the upper end of the support frame 4 in a matching manner, and the traveling drive mechanism 2 can drive the support frame 4 and the top cover 5 to move left and right.

[0033] The support frame 4 is also connected with wheels. The support frame 4 can select a steel structure cross beam that meets the size according to the size of a single filter tank. According to the total weight of the steam collection device, four wheels can be provided at the four corners of the support frame 4 for the overall movement of the support frame, and the type of the following transverse steel rail 3 embedded at the top of the filter tank can be determined according to the distance between the wheel rims.

[0034] To ensure that the steam collection device can be used for a long time and has structural stability in a water slag environment, the top cover 5 is preferably made of a material resistant to acid, alkali, and high temperature, such as fiberglass. To improve the overall strength of the cover, the top cover 5 can be assembled in blocks in the non-rail traveling direction, and the shape can be set as an arch shape with more stable structure. Figures 4 to 5As shown, the top cover 5 includes a top plate 53 and an end plate 54. Both the top plate 53 and the cover plate 64 are arched plates protruding upward. Both the top plate 53 and the cover plate 64 extend along the front-to-back direction. The end plate 54 is located at the front and rear ends of the top plate 53. The end plate 54 and the top plate 53 are sealed and connected.

[0035] The top plate 53 is a rectangular structure when viewed from above. The length direction of the top plate 53 is parallel to the front-to-back direction, and the width direction of the top plate 53 is parallel to the left-to-right direction. The slag leakage opening 52 along the front-to-back direction is located in the middle of the top plate 53. The slag leakage opening 52 is rectangular. The length direction of the slag leakage opening 52 is parallel to the left-to-right direction. The length of the slag leakage opening 52 along the left-to-right direction is equal to the width of the top plate 53.

[0036] The upper ends of the left and right sides of the support frame 4 are both provided with longitudinal rails 61, which extend in the front-rear direction, and the cover plate 64 and the movable bracket 62 can move in the front-rear direction on the longitudinal rails 61. The translation drive mechanism 63 can adopt an existing mechanism capable of making an object translate, for example, the translation drive mechanism 63 can include a motor and wheels connected in sequence, the wheels are located on the longitudinal rails 61, and the translation drive mechanism 63 is connected to the movable bracket 62 through a wheel frame.

[0037] The translation drive mechanism 63 can drive the sealing plate 64 and the movable bracket 62 to move forward to just above the slag leakage port 52, at which time the sealing plate 64 can seal the slag leakage port 52. The translation drive mechanism 63 can drive the sealing plate 64 and the movable bracket 62 to move backward to the rear of the slag leakage port 52, that is, the sealing plate 64 leaves the slag leakage port 52, at which time the sealing plate 64 cannot seal the slag leakage port 52, and the slag leakage port 52 is in an exposed state.

[0038] like Figures 5 and 6 As shown, in order to scrape off the slag particles 7 that fall on the sealing plate 64 , a scraping plate 8 is provided above the sealing plate 64 . When the sealing plate 64 leaves the slag outlet 52 , the scraping plate 8 can scrape off the slag particles 7 on the sealing plate 64 and drop them into the slag outlet 52 .

[0039] The scraper plate 8 is in an upright state, extending in the left-right direction, and has a long strip structure. The length of the scraper plate 8 is greater than or equal to the length of the sealing plate 64. The scraper plate 8 is connected and fixed to the support frame 4, and the lower end of the scraper plate 8 matches the upper surface of the sealing plate 64. The distance between the scraper plate 8 and the sealing plate 64 is 1mm-10mm.

[0040] The sealing plate 64 and the top plate 53 can both adopt a flat plate structure or an arched plate structure. The width and position of the movable sealing plate 64 and the slag outlet 52 can be determined according to the size of the grab bucket. The principle to be ensured is that the overall width of the grab bucket should be smaller than the width of the sealing plate 64 and the slag outlet 52. For example, the width of the sealing plate 64 and the slag outlet 52 can be 1m-3m.

[0041] like Figures 5 and 6 As shown, in order to prevent the scraper plate 8 from damaging the sealing plate 64 due to its own structural shape, the lower edge of the scraper plate 8 should be similar in shape to the upper surface of the sealing plate 64, and the scraper plate 8 should not be made of hard surface material. During the cleaning process, there are many local slag particles, and the scraper plate 8 is required to have a certain strength to ensure that the structure can still maintain integrity under extreme working environments.

[0042] According to the placement position of the scraper plate 8 and the width of the movable cover plate 64, a car stop can be set on the longitudinal rail 61. In order to ensure the stability and smoothness of the equipment during translation, the motors of the translation drive mechanism 63 are preferably arranged on opposite sides, with two motors installed above the support frame 4.

[0043] The following introduces a bottom filter tank, such as Figures 5 and 6 As shown, the bottom filter tank 1 includes a first tank body 11 and a second tank body 12 arranged on the left and right. The bottom filter tank 1 also includes the above-mentioned self-propelled slag unloading type bottom filter tank steam collecting device and a slag particle collecting bucket 13. The slag particle collecting bucket 13 is located on the right side of the bottom filter tank 1. The self-propelled slag unloading type bottom filter tank steam collecting device can move left and right on the first tank body 11 and the second tank body 12. The self-propelled slag unloading type bottom filter tank steam collecting device can close the upper end of the first tank body 11 or the upper end of the second tank body 12.

[0044] A transverse steel rail 3 is provided on the top of the opposite side wall of the bottom filter tank 1. The transverse steel rail 3 is mainly used for the movement of the above-mentioned self-propelled slag unloading bottom filter tank steam collection device between adjacent multiple filter tanks (the first tank body 11 and the second tank body 12). When the self-propelled slag unloading bottom filter tank steam collection device is located at the working position above the bottom filter tank 1, the gap between the self-propelled slag unloading bottom filter tank and the concrete filter tank should be sealed to prevent steam from overflowing. The sealing of the surrounding cross beams should consider internal and external multi-layer soft sealing to ensure that the steam collection device can also ensure the sealing effect when there is a movement error, and daily wear and tear must be considered to ensure the service life.

[0045] The working method of the bottom filter tank is described below, which includes the following steps in sequence:

[0046] Step 1, the blast furnace water slag flushing system issues an interlocking control command, the travel drive mechanism 2 works, the self-propelled slag unloading bottom filter steam collection device moves rightward to the second tank body 12, the translation drive mechanism 63 moves the sealing plate 64 forward to the top of the slag leakage port 52, the sealing plate 64 closes the slag leakage port 52, the self-propelled slag unloading bottom filter steam collection device closes the upper end of the second tank body 12, and the travel drive mechanism 2 stops working. After the self-propelled slag unloading bottom filter steam collection device stops, a stop position command is issued, and the control system starts the slag flushing signal at the same time. The slag flushing water electric valve and the slag flushing ditch valve are opened, and the slag water mixture enters the second tank body 12 for slag water filtration. After the second tank body 12 slag flushing command is issued, the first tank body 11 synchronously starts the slag grabbing process, that is, the overhead crane grab bucket 14 grabs the slag particles 7 in the first tank body 11, and transports them to the slag particle collection bucket 13, and then uses a belt or a car to transport them away to realize the slag particle transportation. When the overhead crane grab bucket 14 moves directly above the second pool body 12, the overhead crane grab bucket 14 is only located directly above the sealing plate 64, and the overhead crane grab bucket 14 is not located directly above the fixed sealing area 51. The slag particles 7 spilled by the overhead crane grab bucket 14 fall on the sealing plate 64 but not on the fixed sealing area 51.

[0047] In addition, anti-collision steel columns can also be added to prevent the grab bucket of the slag grab crane from colliding with the steam collection device and causing damage due to manual operating errors or automated failures of the slag grab crane.

[0048] Step 2, the translation driving mechanism 63 moves the sealing plate 64 backward to the rear of the slag leakage port 52, that is, the sealing plate 64 leaves the slag leakage port 52. At this time, the sealing plate 64 cannot close the slag leakage port 52. During the backward movement of the sealing plate 64, the scraping plate 8 scrapes off the slag particles 7 that fall on the sealing plate 64, and the scraped slag particles 7 fall into the second pool body 12 from the slag leakage port 52. The sealing plate 64 can be moved forward and backward multiple times as needed to completely remove the slag particles on the sealing plate 64.

[0049] Step 3, the blast furnace water slag flushing system issues an interlocking control command, the travel drive mechanism 2 works, the self-propelled slag discharge type bottom filter steam collection device moves to the left to the first tank body 11, the translation drive mechanism 63 moves the cover plate 64 forward to the top of the slag leakage port 52, the cover plate 64 closes the slag leakage port 52, the self-propelled slag discharge type bottom filter steam collection device closes the upper end of the first tank body 11, and the travel drive mechanism 2 stops working. After the self-propelled slag discharge type bottom filter steam collection device stops, a stop position command is issued, and the control system starts the slag flushing signal at the same time. The slag flushing water electric valve and the slag flushing ditch valve are opened, and the slag water mixture enters the first tank body 11. After the slag flushing command of the first tank body 11 is issued, the second tank body 12 starts the slag grabbing process synchronously, that is, the overhead crane grab bucket 14 grabs the slag particles in the second tank body 12, and transports them to the slag particle collection bucket 13, and then transports them away by belt or car to realize the slag particle transportation.

[0050] Step 4: Repeat steps 1 to 3 as needed to achieve continuous operation.

[0051] Observing the water level information in the first tank body 11 and the second tank body 12 is the key to switching the working filter tank and the process control of the system. In order to ensure that the water level in the filter tank is lower than the filter tank wall during the water slag flushing process, a scanning device or a camera device can be added to the self-propelled slag unloading bottom filter tank steam collection device, the first tank body 11 and the second tank body 12 to measure the water level in the first tank body 11 and the second tank body 12 in real time and dynamically during the slag flushing process.

[0052] The above is only a specific embodiment of the present invention, and cannot be used to limit the scope of the invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the protection scope of the present invention should still fall within the scope of the present invention. In addition, the technical features in the present invention can be freely combined with each other, with technical features and technical solutions, and with technical solutions.

Claims

1. A self-propelled slag unloading bottom filter steam collection device, characterized in that: The self-propelled slag discharge bottom filter tank steam collection device comprises a support frame (4), a top sealing cover (5) and a travel drive mechanism (2); the top sealing cover (5) comprises a fixed sealing cover area (51) and a slag discharge port (52) arranged in a front-to-back direction; a self-propelled sealing cover (6) is arranged on the slag discharge port (52); the self-propelled sealing cover (6) comprises a sealing cover plate (64), a movable bracket (62) and a translation drive mechanism (63) connected in sequence; the translation drive mechanism (63) can drive the sealing cover plate (64) to move in a horizontal direction; and the sealing cover plate (64) can close the slag discharge port (52).

2. The self-propelled slag unloading bottom filter steam collection device according to claim 1 is characterized in that: The support frame (4) is of a rectangular structure. The support frame (4) comprises a crossbeam (41) and a longitudinal beam (42). The crossbeam (41) extends in the left-right direction, and the longitudinal beam (42) extends in the front-back direction. The lower end of the top cover (5) is matched and connected with the upper end of the support frame (4). The travel drive mechanism (2) can drive the support frame (4) and the top cover (5) to move left and right as a whole.

3. The self-propelled slag unloading bottom filter steam collection device according to claim 2 is characterized in that: The top cover (5) comprises a top plate (53) and an end plate (54). Both the top plate (53) and the cover plate (64) are arched plates protruding upwards. The end plate (54) is located at the front and rear ends of the top plate (53).

4. The self-propelled slag unloading bottom filter steam collection device according to claim 3 is characterized in that: The top plate (53) extends along the front-to-back direction, the length direction of the top plate (53) is parallel to the front-to-back direction, the width direction of the top plate (53) is parallel to the left-to-right direction, the slag leakage opening (52) along the front-to-back direction is located in the middle of the top plate (53), the slag leakage opening (52) is rectangular, and the length of the slag leakage opening (52) along the left-to-right direction is equal to the width of the top plate (53).

5. The self-propelled slag unloading bottom filter steam collection device according to claim 1, characterized in that: The upper ends of the left and right sides of the support frame (4) are both provided with longitudinal rails (61), which extend in the front-rear direction, and the cover plate (64) and the movable bracket (62) can move in the front-rear direction on the longitudinal rails (61).

6. The self-propelled slag unloading bottom filter steam collection device according to claim 5, characterized in that: A scraper plate (8) is arranged above the sealing plate (64). When the sealing plate (64) leaves the slag outlet (52), the scraper plate (8) can scrape the slag particles (7) on the sealing plate (64) and drop them into the slag outlet (52).

7. The self-propelled slag unloading bottom filter steam collection device according to claim 6, characterized in that: The scraper plate (8) is in an upright state, extending in the left-right direction, connected and fixed to the support frame (4), the lower end of the scraper plate (8) matches the upper surface of the sealing plate (64), and the distance between the scraper plate (8) and the sealing plate (64) is 1 mm-10 mm.

8. The self-propelled slag unloading bottom filter steam collection device according to claim 5, characterized in that: The edge of the sealing plate (64) is connected with a sealing curtain (9). When the sealing plate (64) closes the slag leakage opening (52), the sealing curtain (9) can seal the gap between the sealing plate (64) and the slag leakage opening (52).

9. A bottom filter tank, characterized in that: The bottom filter tank (1) includes a first tank body (11) and a second tank body (12) arranged on the left and right, and the bottom filter tank (1) also includes the self-propelled slag unloading type bottom filter tank steam collecting device according to claim 1, and the self-propelled slag unloading type bottom filter tank steam collecting device can move left and right on the first tank body (11) and the second tank body (12), and the self-propelled slag unloading type bottom filter tank steam collecting device can close the upper end of the first tank body (11) or the upper end of the second tank body (12).

10. A method for operating the bottom filter tank according to claim 9, characterized in that: The working method of the bottom filter tank comprises the following steps in sequence: Step 1, the steam collection device of the self-propelled slag discharge bottom filter moves to the right onto the second tank body (12), the sealing plate (64) closes the slag leakage port (52), the slag-water mixture enters the second tank body (12) for slag-water filtration, the overhead crane grab bucket (14) grabs the slag particles in the first tank body (11) and transports them to the slag particle collection bucket (13), and during the process of the overhead crane grab bucket (14) moving directly above the second tank body (12), the overhead crane grab bucket (14) is only located directly above the sealing plate (64), and the overhead crane grab bucket (14) is not located directly above the fixed sealing area (51); Step 2, the sealing plate (64) leaves the slag outlet (52), the slag outlet (52) is in an exposed state, the scraping plate (8) scrapes off the slag particles (7) falling on the sealing plate (64), and the scraped slag particles (7) fall into the second pool body (12) from the slag outlet (52); Step 3, the self-propelled slag unloading bottom filter tank steam collection device moves to the left to the first tank body (11), the sealing cover plate (64) closes the slag leakage port (52), the slag-water mixture enters the first tank body (11) for slag-water filtration, and the overhead crane grab bucket (14) grabs the slag particles in the second tank body (12) and transports them to the slag particle collection bucket (13).

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