JP2020165637A - Sintered ore cooler - Google Patents

Abstract

To provide a sintered ore cooler capable of suppressing deterioration of cooling performance.SOLUTION: In outer and inner peripheral walls of a sedimentary tank (2), a peripheral wall on which a discharge port (24) is not provided is defined as a first peripheral wall (21), a peripheral wall on which the discharge port (24) is provided is defined as a second peripheral wall (22), a direction in which the sedimentary tank (2) advances with respect to a scraper (6) in a circumferential direction of the sedimentary tank (2) is defined as backward, and a speed of the sintered ore (11) flowing backward of the scraper (6) as the sedimentary tank (2) and the scraper (6) move relative to each other is defined as an unloading speed. Here, the scraper (6) is provided so that the difference between the unloading speed on the side of the first peripheral wall (21) with respect to a louver unit (4) and the unloading speed on the side of the second peripheral wall (22) with respect to the louver unit (4) is within the predetermined range.SELECTED DRAWING: Figure 7

Description

The present invention relates to a sinter cooling device for cooling sinter.

Conventionally, a sinter cooling device for cooling a high-temperature sinter supplied from a sinter is known. For example, in Patent Document 1, the sintered ore from the sinter is deposited from above and is discharged from the lower outer peripheral portion so as to cross between the inside and the outside of the lower part of the sinter. A sinter cooling device including a plurality of ventilation ducts arranged in an array and a plurality of central louver portions arranged in an annular shape by connecting adjacent ventilation ducts is disclosed. This sinter cooling device takes in outside air from the ventilation duct, supplies the taken in air from between the louvers in the central louver to the lower center of the deposit tank, and from below to above the sintered ore deposited in the deposit tank. The air is passed through the louver to cool the entire sinter.

Japanese Unexamined Patent Publication No. 2008-232519

The present inventor has newly found the following problems. That is, when the sinter discharge port is provided at the lower part of either the outer peripheral wall or the inner peripheral wall of the annular deposit tank to which the sinter is supplied and deposited, the side of the peripheral wall provided with the sinter is burnt. The rate at which the calcination flows downward is relatively high, and the time it takes to reach the discharge port, in other words, the residence time in the sedimentation tank, tends to be short. On the other hand, on the side of the peripheral wall where the discharge port is not provided, the rate at which the sinter flows downward is relatively slow, and the residence time tends to be long. If the distribution of the flow velocity of the sinter in the sedimentation tank becomes uneven in this way, the cooling performance may deteriorate. That is, the sinter is insufficiently cooled on the side where the flow velocity is high, while the sinter is supercooled on the side where the flow velocity is slow. As a result, the temperature of the discharged sinter may vary.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a new and improved sinter cooling device capable of suppressing deterioration of cooling performance. To do.

In order to solve the above problem, according to a certain viewpoint of the present invention, it is a sinter cooling device for cooling the sinter, and the sinter from the sinter is supplied from the upper part and deposited. The sinter, which is provided so that the cooling gas is supplied from the lower part and passes between the deposited sinters and heads toward the upper part, is cooled by the cooling gas to the lower part of either the outer peripheral wall or the inner peripheral wall. An annular deposit tank that discharges from the discharge port provided in the above, a rod-shaped scraper inserted into the inside of the deposit tank from the discharge port, and a rod-shaped scraper that is placed inside the deposit tank above the scraper and in the circumferential direction of the deposit tank. It is provided with a gas introduction member that is provided so as to extend and introduces cooling gas into the inside of the deposition tank, and of the outer peripheral wall and the inner peripheral wall, the peripheral wall that is not provided with a discharge port is used as the first peripheral wall, and a discharge port is provided. The peripheral wall is the second peripheral wall, and in the circumferential direction of the deposition tank, the direction in which the scraper advances with respect to the deposition tank is the front, the direction in which the sedimentation tank advances with respect to the scraper is the rear, and the relative between the deposition tank and the scraper. When the speed of the sinter flowing down to the rear of the scraper as it moves is defined as the unloading speed, the unloading speed on the side of the first peripheral wall with respect to the gas introducing member and the unloading speed of the second peripheral wall with respect to the gas introducing member Provided is a sinter cooling device provided with a scraper so that the difference from the unloading speed on the side is within a predetermined range.

The rear end of the scraper may be provided so as to be inclined with respect to the radial direction of the sedimentation tank so that the rear end of the scraper is directed backward from the side of the first peripheral wall toward the side of the second peripheral wall.

The scraper is connected to the upper rear side of the scraper and has a plate-shaped portion extending in the horizontal direction, and the plate-shaped portion may be provided between the gas introduction member and the second peripheral wall.

The plate-shaped portion and the discharge port may overlap in the radial direction of the sedimentation tank.

The scraper connects to the rear upper side of the scraper and has a plate-like portion that extends horizontally, and the rear edge of the plate-like portion moves from the side of the first peripheral wall to the side of the second peripheral wall, and is rearward of the scraper. It may be provided so as to move away from the edge of the rear.

The scraper is connected to the upper front side of the scraper and has a plate-shaped portion extending in the horizontal direction, and the plate-shaped portion may be provided between the gas introduction member and the first peripheral wall.

At this time, the front end of the scraper may be provided so as to be inclined with respect to the radial direction of the sedimentary tank so as to move backward from the side of the first peripheral wall toward the side of the second peripheral wall.

The scraper may be provided so that the height of the scraper between the gas introduction member and the first peripheral wall is higher than the height of the scraper between the gas introduction member and the second peripheral wall.

As described above, according to the sinter cooling apparatus according to the present invention, deterioration of cooling performance can be suppressed.

It is an axial sectional view of the sinter cooling apparatus which concerns on 1st Embodiment of this invention. It is a top view of the sinter cooling apparatus which concerns on the same embodiment. It is a perspective view of the ventilation duct which concerns on the same embodiment. It is a perspective view of the louver unit which concerns on the same embodiment. It is a schematic view which looked at the lower part of the sedimentation tank which concerns on this embodiment from above. It is a schematic view which looked at the lower part of the sedimentation tank which concerns on this embodiment from above. It is an axial sectional view of the lower part of the sedimentation tank which concerns on the same embodiment. It is a schematic view which looked at the lower part of the sedimentation tank which concerns on the modification of the same embodiment from above. It is a top view of the scraper which concerns on 2nd Embodiment of this invention. It is sectional drawing of the scraper which concerns on the same embodiment. It is a schematic view which looked at the lower part of the sedimentation tank which concerns on this embodiment from above. It is an axial sectional view of the lower part of the sedimentation tank which concerns on the same embodiment. It is a top view of the scraper which concerns on 3rd Embodiment of this invention. It is sectional drawing of the scraper which concerns on the same embodiment. It is a schematic view which looked at the lower part of the sedimentation tank which concerns on this embodiment from above. It is an axial sectional view of the lower part of the sedimentation tank which concerns on 4th Embodiment of this invention. It is a top view of the scraper which concerns on 5th Embodiment of this invention. It is sectional drawing of the scraper which concerns on the same embodiment. It is a schematic view which looked at the lower part of the sedimentation tank which concerns on this embodiment from above. It is a schematic view which looked at the lower part of the sedimentation tank which concerns on 6th Embodiment of this invention from above.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present specification and the drawings, components having substantially the same functional configuration are designated by the same reference numerals to omit duplicate description.

[First Embodiment]
First, the schematic configuration of the sinter cooling apparatus according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 7. 1 and 2 are schematic views showing a schematic configuration of a sinter cooling device 1 according to the present embodiment. FIG. 1 shows a cross section of the sinter cooling device 1 cut in a plane passing through the shaft 200 of the sedimentation tank 2. FIG. 2 is a top view of a part of the sinter cooling device 1 as viewed from above.

The sinter cooling device 1 is a cooler for cooling the sinter 11, and includes a main body, a scraping section, a driving section, a suction section, and a sinter supply section. The main body includes a deposit tank 2, a plurality of ventilation ducts 3, a plurality of louver units 4, and a bridge 5. The scraping portion has a scraper 6. The drive unit has a plurality of support rollers 70 and a drive motor 71. The suction unit includes a hood 80, an exhaust duct 81, a suction fan 82, and a boiler 83. The sinter supply unit has a supply chute 9. For convenience of explanation, the ventilation duct 3 and the louver unit 4 are not shown in FIG.

FIG. 3 is a schematic perspective view of the ventilation duct 3. FIG. 4 is a schematic perspective view of the louver unit 4. FIG. 5 schematically shows a partial cross section (VV view of FIG. 7) when the lower part of the main body is viewed from above. FIG. 6 is a top view of the lower part of the main body portion, and the portion where the scraper 6 is provided is enlarged and schematically shown. FIG. 7 schematically shows a partial cross section (viewed in VII-VII of FIG. 5) in which the lower part of the main body portion, specifically, the vicinity of the scraper 6 is cut by a plane passing through the shaft 200. For convenience of explanation, the scraper 6 is not shown in FIG.

As shown in FIGS. 1 and 7, the sedimentation tank 2 has a table 20, an inner peripheral wall 21, and an outer peripheral wall 22. The table 20 is an annular bottom plate that extends around the shaft 200 and extends horizontally. Hereinafter, the circumferential direction of the shaft 200 is referred to as a circumferential direction. The radial direction centered on the axis 200, in other words, the linear direction extending horizontally through the axis 200 is called the radial direction. Two rows of annular rails 23 extending in the circumferential direction are provided on the lower surface side of the table 20.

The sedimentation tank 2 is an annular shape extending in the circumferential direction. The cross section of the deposit tank 2 cut by a plane passing through the shaft 200 is an inverted trapezoidal shape surrounded by the table 20, the inner peripheral wall 21, and the outer peripheral wall 22. The inner peripheral wall 21 is an inner peripheral wall, the lower end of which is connected to the inner peripheral edge of the table 20, and is inclined in the vertical direction so as to be radially inward (that is, to the side of the shaft 200) as it goes upward. The outer peripheral wall 22 is an outer peripheral wall, the lower end of which faces the upper surface of the table 20, and is inclined in the vertical direction so as to go outward in the radial direction as it goes upward. The discharge port 24 of the sinter 11 is provided in the lower part of the sedimentation tank 2. The discharge port 24 is not provided on the inner peripheral wall 21, but is provided on the outer peripheral wall 22 side. The discharge port 24 is a gap between the lower end of the outer peripheral wall 22 and the upper surface of the table 20, and is provided over the entire circumference of the deposit tank 2.

As shown in FIG. 5, a plurality of openings 210 and a plurality of louver portions 211 are provided in the lower portion of the inner peripheral wall 21. The openings 210 and the louver 211 are alternately adjacent to each other in the circumferential direction of the inner peripheral wall 21, and are provided over the entire circumference of the inner peripheral wall 21. As shown in FIG. 7, in each louver portion 211, a plurality of louvers (that is, wing plates) 212 extending in the circumferential direction are arranged side by side in the vertical direction. Each louver 212 is arranged so as to incline downward from the inside to the outside in the radial direction of the sedimentary tank 2. In other words, the gap between the vertically adjacent louvers 212 is inclined with respect to the horizontal direction so as to go downward toward the inside of the sedimentary tank 2.

As shown in FIG. 5, in the lower part of the outer peripheral wall 22, a plurality of openings 220 and a plurality of louver portions 221 are provided above the discharge port 24. The openings 220 and the louver 221 are alternately adjacent to each other in the circumferential direction of the outer peripheral wall 22, and are provided over the entire circumference of the outer peripheral wall 22. The opening 220 is located at a position that faces the opening 210 of the inner peripheral wall 21 in the radial direction. As shown in FIG. 7, in each louver portion 221, a plurality of louvers 222 extending in the circumferential direction are arranged side by side in the vertical direction. Each louver 222 is arranged so as to incline downward from the outside to the inside in the radial direction of the sedimentary tank 2. In other words, the gap between the vertically adjacent louvers 222 is inclined with respect to the horizontal direction so as to go downward toward the inside of the sedimentary tank 2.

As shown in FIGS. 5 and 7, the ventilation duct 3 is arranged so as to extend in the radial direction inside the sedimentary tank 2, and is connected to the inner peripheral wall 21 and the outer peripheral wall 22. The plurality of ventilation ducts 3 are arranged side by side in the circumferential direction of the deposit tank 2. As shown in FIGS. 3 and 7, the ventilation duct 3 has an inverted trapezoidal box shape when viewed from the circumferential direction of the sedimentation tank 2. Intake ports 30 are provided at both ends of the ventilation duct 3 in the radial direction of the storage tank 2. The upper surface and the lower surface of the ventilation duct 3 are closed, and a connection opening 31 is provided at the center of the wide side surface of the ventilation duct 3. The ventilation duct 3 is provided with a first partition plate 331 and a second partition plate 332. Both partition plates 331 and 332 spread in the vertical direction and partition the inside of the ventilation duct 3 into four parts. The first partition plate 331 extends in a direction along a wide side surface. The second partition plate 332 is orthogonal to the first partition plate 331, partitions the inside of the ventilation duct 3, and divides the connection opening 31 into two.

As shown in FIG. 5, one end of the ventilation duct 3 having the intake port 30 fits into the lower opening 210 of the inner peripheral wall 21. The other end of the ventilation duct 3 having the intake port 30 fits into the opening 220 at the bottom of the outer peripheral wall 22.

As shown in FIG. 4, the louver unit 4 has a box shape with the upper surface and the lower surface closed. A tubular end having a ventilation port 40 is provided on two narrow side surfaces of the louver unit 4. Louver portions 41 are provided on two wide side surfaces. The louver portion 41 has a plurality of louvers 411. The louver unit 4 is provided with a first partition plate 421 and a second partition plate 422. The first partition plate 421 extends in a direction along the wide side surface, partitions the louver portions 41 provided on both side surfaces of the wide side, and divides the ventilation port 40 into two. The second partition plate 422 divides the wide side surface louver portions 41 into two. The plurality of louvers 411 are arranged side by side in the vertical direction. The louver 411 is arranged so as to incline downward as the distance from the first partition plate 421 increases. In other words, the gap between the vertically adjacent louvers 411 is tilted in the horizontal direction so as to move downward as the distance from the first partition plate 421 increases.

As shown in FIG. 5, the louver unit 4 is connected to the ventilation duct 3. The end of the louver unit 4 having the ventilation port 40 fits into the connection opening 31 of the ventilation duct 3. The louver unit 4 is arranged so as to connect the ventilation ducts 3 adjacent to each other in the circumferential direction of the deposit tank 2. The plurality of louver units 4 are arranged in an annular shape extending in the circumferential direction over the entire circumference of the deposit tank 2 as a whole. In FIG. 6, a plurality of louver units 4 are drawn as one continuous member, and the ventilation duct 3 is not shown.

As shown in FIG. 1, the bridge 5 is provided on the inner peripheral side of the sedimentary tank 2 and supports the sedimentary tank 2. The bridge 5 is rotatably provided with respect to the foundation 50 via a bearing 51 installed on the foundation 50. The center of rotation of the bridge 5, that is, the bearing 51, overlaps the shaft 200.

The scraper 6 is a rod-shaped member made of a metal material such as iron, and is inserted into the inside of the deposit tank 2 from the discharge port 24. As shown in FIG. 6, the scraper 6 is arranged below the louver unit 4 so as to extend in the horizontal direction so as to be inclined with respect to the radial direction of the sedimentation tank 2. The cross section of the scraper 6 is rectangular. The upper and lower surfaces of the scraper 6 extend in the horizontal direction. Both side surfaces of the scraper 6 in the circumferential direction of the deposit tank 2 extend in the vertical direction.

As shown in FIG. 1, the plurality of support rollers 70 are arranged in two rows in an annular shape extending in the circumferential direction on the foundation 50, and are in contact with the rail 23 of the table 20. The drive motor 71 is connected to some of the plurality of support rollers 70 and generates a force for rotating these support rollers 70. The frictional force between the rotationally driven support roller 70 and the rail 23 drives the table 20 to rotate, and the deposit tank 2 rotates around the shaft 200.

As shown in FIG. 2, the hood 80 has an annular shape and is arranged so as to cover the upper opening of the deposit tank 2. The sedimentation tank 2 rotates with respect to the hood 80 whose position is fixed with respect to the foundation 50. One end of the exhaust duct 81 is connected to the hood 80 and communicates with the inside of the hood 80. As shown in FIG. 1, a suction fan 82 is connected to the other end of the exhaust duct 81. The suction fan 82 sucks the air 10 inside the hood 80 through the exhaust duct 81. A boiler 83 is connected in front of the suction fan 82. The boiler 83 recovers heat energy from the hot air 10 from the hood 80 by exchanging heat. The dust remover 84 may be connected between the boiler 83 and the hood 80. Further, a seal structure is provided to prevent the air 10 from leaking from the gap between the hood 80 and the upper end of the sedimentation tank 2.

The supply chute 9 is arranged so as to penetrate the hood 80. A high-temperature sinter 11 before cooling is supplied to the supply chute 9 from the sinter. The sinter 11 supplied to the supply chute 9 passes through the supply chute 9 and is supplied from the upper part of the deposit tank 2 to the inside of the deposit tank 2 and is deposited. The supply chute 9 may be provided so that a predetermined amount of sinter 11 is always filled inside. In this case, since the sinter 11 is continuously supplied from the supply chute 9 to the sedimentary tank 2 in accordance with the rotation of the sedimentary tank 2, fluctuations in the height of the sinter 11 deposited in the sedimentary tank 2 can be suppressed. ..

The air 10 inside the hood 80 is sucked by the suction fan 82, so that the outside air 10 is taken into the inside of the deposit tank 2. As shown in FIG. 7, the air 10 is directly taken into the inside of the sedimentary tank 2 through the gap between the louvers 212 at the louver portion 211 of the inner peripheral wall 21 of the sedimentary tank 2. The same applies to the louver portion 221 of the outer peripheral wall 22. On the other hand, the air 10 is also taken into the inside of the deposition tank 2 from the intake port 30 of the ventilation duct 3 connected to both peripheral walls 21 and 22. The air 10 taken into the inside of the ventilation duct 3 from the intake port 30 is introduced into the louver portion 41 of the louver unit 4 connected to the ventilation duct 3 after the flow path is divided by the partition plates 331 and 332, and the louver It is supplied to the inside of the deposit tank 2 via the section 41. The louver unit 4 functions as a gas introduction member for introducing air 10 into the deposit tank 2.

The external air 10 taken into the inside of the deposit tank 2 passes between the deposited sintered ores 11 and moves from the lower part to the upper part of the deposit tank 2. During this time, the air 10 absorbs the heat of the sinter 11, so that the sinter 11 is cooled. The air 10 functions as a gas (hereinafter, referred to as a cooling gas) for cooling the sinter 11 inside the sedimentation tank 2. The deposit tank 2 functions as a cooling tank. The high-temperature air 10 that has moved to the inside of the hood 80 is exhausted from the exhaust duct 81. The cooled sinter 11 is continuously discharged from the discharge port 24 at the lower part of the sedimentation tank 2 as the sedimentation tank 2 rotates. That is, due to the relative movement of the sedimentary tank 2 and the scraper 6 in the circumferential direction of the sedimentary tank 2, the sintered ore 11 at the lower part of the sedimentary tank 2 is pushed by the scraper 6 and discharged from the discharge port 24 to the outside of the sedimentary tank 2. Will be done. The sinter 11 is continuously supplied from the upper part of the sedimentary tank 2, is cooled by exchanging heat with the air 10 sucked from the outside, sequentially descends inside the sedimentary tank 2, and finally by the scraper 6. It will be scraped out. At this time, the sinter 11 inside the deposition tank 2 gradually moves downward, and while gradually moving downward, it is sucked and cooled by the upward air 10, so that it is sintered. The entire ore 11 is efficiently cooled. As described above, the sinter cooling device enables countercurrent heat exchange in which a cooling gas such as air flows from the bottom to the top. The cooling gas is not limited to air.

The details of the configuration of the scraper 6 will be described below. In the circumferential direction of the deposit tank 2, the direction in which the scraper 6 advances with respect to the deposit tank 2 is the front, and the direction in which the scraper 2 advances with respect to the scraper 6 is the rear. In FIGS. 2 and 6, the traveling direction (that is, rearward) of the deposit tank 2 with respect to the scraper 6 is indicated by an arrow 201.

As shown in FIG. 6, the front side surface 601 and the rear side surface 602 of the scraper 6 are inclined with respect to the radial direction of the sedimentary tank 2 so as to move backward from the side of the inner peripheral wall 21 toward the side of the outer peripheral wall 22. ing. When viewed from above, the angle formed by the front end of the scraper 6 (that is, the front side surface 601) with respect to the radial straight line of the sedimentary tank 2 is θ1. Let θ2 be the angle formed by the rear end of the scraper 6 (that is, the rear side surface 602) with respect to the radial straight line of the sedimentation tank 2. Hereinafter, when viewed from above, when the counterclockwise direction is positive and the clockwise direction is negative, θ1> 0 ° and θ2> 0 °. The front and rear side surfaces 601, 602 of the scraper 6 may be parallel to each other. In other words, θ1 = θ2.

Next, the advantages of the sinter cooling device 1 of the present embodiment will be described with reference to FIGS. 6 and 7. Hereinafter, among the peripheral walls of the sedimentary tank 2, the inner peripheral wall 21 which is the peripheral wall without the discharge port 24 is referred to as the first peripheral wall 21, and the outer peripheral wall 22 which is the peripheral wall provided with the discharge port 24 is referred to as the second peripheral wall 22. To do. As shown in FIG. 7, the flow passages of the sinter 11 flowing from the upper part toward the discharge port 24 inside the sedimentary tank 2 are the first flow passage 111 and the second flow passage in the radial direction of the sedimentary tank 2. It is roughly divided into 112. The first flow passage 111 is a passage on the side of the first peripheral wall 21, and communicates with the discharge port 24 by changing the direction of the flow outward in the radial direction of the deposit tank 2 at the lower part of the deposit tank 2. The second flow passage 112 is a passage on the side of the second peripheral wall 22, and communicates with the discharge port 24 by changing the direction of the flow outward in the radial direction of the deposit tank 2 at the lower part of the deposit tank 2.

The sinter cooling device 1 of the present embodiment includes a louver unit 4 as a gas introduction member. The louver unit 4 is arranged inside the deposit tank 2 above the scraper 6 and is provided so as to extend in the circumferential direction of the deposit tank 2. The first flow passage 111 communicates with the discharge port 24 including the space between the first peripheral wall 21 and the louver unit 4. The second flow passage 112 communicates with the discharge port 24 including the space between the second peripheral wall 22 and the louver unit 4.

A discharge port 24 is provided on the second peripheral wall 22 constituting the second flow passage 112, and the second flow passage 112 is directly continuous with the discharge port 24 below. On the other hand, the first peripheral wall 21 constituting the first flow passage 111 is not provided with a discharge port 24, and the first flow passage 111 bends downward and passes through a passage along the table 20 which is the bottom surface of the sedimentary tank 2. And connect to the discharge port 24. Therefore, in the lower part of the sedimentary tank 2, the length and direction of the flow of the sintered ore 11 toward the radial outside of the sedimentary tank 2, that is, the side of the discharge port 24 are changed in the first flow passage 111 in the second flow passage. Greater than 112. Therefore, the sinter 11 in the second flow passage 112 has a faster flow velocity than the sinter 11 in the first flow passage 111, and the time required to reach the discharge port 24, in other words, the retention in the sedimentary tank 2. The time tends to be short, and it is easy to be discharged from the discharge port 24 more quickly. On the other hand, the sinter 11 in the first flow passage 111 has a slower flow velocity and is stagnant than the sinter 11 in the second flow passage 112, and the time until it reaches the discharge port 24 (residence time). Tends to be long, and is likely to be discharged from the discharge port 24 later.

As described above, if the distribution of the flow velocity becomes non-uniform in the radial direction of the deposition tank 2, the cooling performance may be deteriorated. That is, in the second flow passage 112 having a high flow velocity, the sinter 11 is insufficiently cooled, while in the first flow passage 111 having a slow flow velocity, the sinter 11 is in a supercooled state. As a result, the temperature of the discharged sinter 11 may vary. In particular, when the radial dimension of the sedimentary tank 2, in other words, the distance between the peripheral walls 21 and 22 is increased in order to enable the cooling treatment of a large amount of the sintered ore 11, the distribution of the flow velocity in the radial direction is increased. Non-uniformity may increase.

On the other hand, in the sinter cooling device 1 of the present embodiment, when the sinter 11 flowing down toward the rear of the scraper 6 due to the relative movement between the deposit tank 2 and the scraper 6 is unloaded, the load is increased. By adjusting the falling speed according to the shape or arrangement of the scraper 6, the non-uniformity of the flow speed in the radial direction is suppressed. That is, the rotation of the sedimentation tank 2 pushes the sinter 11 in front of the scraper 6 and creates a cavity behind the scraper 6. When the sinter 11 enters this cavity, the load is dropped. The scraper 6 is provided so that the difference between the unloading speed on the side of the first peripheral wall 21 and the unloading speed on the side of the second peripheral wall 22 is within a predetermined range. As a result, the flow velocity of the sinter 11 in the first flow passage 111 approaches the flow velocity of the sinter 11 in the second flow passage 112. Therefore, the distribution of the flow velocity in the radial direction of the sedimentary tank 2 can be made uniform, and the deterioration of the cooling performance can be suppressed. The above-mentioned predetermined range of the difference in the unloading speed includes the specifications of the given deposit tank 2 (for example, the inclination of the peripheral walls 21 and 22 or the distance between the peripheral walls 21 and 22) and the operating conditions (for example, the sinter 11 and air). Within the range of the unloading speed difference in which the distribution of the flow velocity is made uniform to the extent that a predetermined cooling performance can be secured under the supply path or supply amount of 10 or the rotation speed of the deposition tank 2. Good.

The sinter 11 that flows backward toward the scraper 6 cannot flow directly below the louver unit 4 from above the louver unit 4. Therefore, the sinter 11 that has flowed down the first flow passage 111 and the second flow passage 112 flows into the lower part of the louver unit 4. Here, the scraper is provided so that the amount of the sinter 11 flowing in from the side of the first peripheral wall 21 is larger than the amount of the sinter 11 flowing in from the side of the second peripheral wall 22 below the louver unit 4. By setting the shape of No. 6 and the like, it becomes easy to keep the difference between the unloading speed on the side of the first peripheral wall 21 and the unloading speed on the side of the second peripheral wall 22 within a predetermined range.

As shown in FIG. 6, the rear side surface 602 of the scraper 6 is tilted by an angle θ2 with respect to the radial direction of the sedimentary tank 2 so as to move backward from the side of the first peripheral wall 21 toward the side of the second peripheral wall 22. It is provided. Therefore, the cavity formed behind the scraper 6 as the sedimentation tank 2 rotates is also formed at an angle θ2 with respect to the radial direction of the sedimentation tank 2. Since θ2> 0 °, the flow direction of the sinter 11 flowing into the cavity has a vector from the side of the first peripheral wall 21 to the side of the second peripheral wall 22. Even below the louver unit 4, the amount of the sintered ore 11 flowing into the rear of the scraper 6 from the side of the first peripheral wall 21 is deposited on the rear side surface 602 of the scraper 6 by the amount of the inclination, that is, the angle θ2. The number increases as compared with the case where the tank 2 is along the radial direction. Therefore, it becomes easy to bring the unloading speed on the side of the first peripheral wall 21 close to the unloading speed on the side of the second peripheral wall 22.

Further, the front side surface 601 of the scraper 6 may be provided so as to be inclined with respect to the radial direction of the sedimentary tank 2 so as to move backward from the side of the first peripheral wall 21 toward the side of the second peripheral wall 22. In other words, θ1> 0 ° may be satisfied. In this case, since the direction of the load acting on the scraper 6 from the front is tilted with respect to the direction perpendicular to the scraper 6, it is possible to prevent the bending load acting on the scraper 6 from becoming excessive and improve the durability of the scraper 6. Can be planned. Further, when the front side surface 601 of the scraper 6 pushes the sinter 11, a force is generated to push the sinter 11 toward the side of the second peripheral wall 22, so that the sinter 11 is also directed toward the discharge port 24 in front of the scraper 6. It becomes easy to discharge. Note that θ1 = θ2, and in this case, it is possible to prevent the cross-sectional area of the scraper 6 from changing depending on the position in the longitudinal direction of the scraper 6.

If a gas introduction member is provided inside the deposit tank 2 so as to extend in the circumferential direction of the deposit tank 2, the scraper 6 is arranged below the gas introduction member, and the shape or arrangement of the scraper 6 is described above. By setting as follows, the above-mentioned action and effect can be obtained. Therefore, the gas introduction member is not limited to the louver unit 4, and for example, a semi-cylindrical box-shaped member that opens downward may be used.

Up to this point, both side surfaces 601 and 602 of the scraper 6 in the circumferential direction of the deposit tank 2 have been described as surfaces spreading in the vertical direction, but the side surfaces 601, 602 of the scraper 6 are inclined with respect to the vertical direction. It may have a step in the vertical direction. Further, the height of the scraper 6 may be different depending on the radial position of the deposit tank 2, in other words, the longitudinal position of the scraper 6.

The sinter cooling device 1 includes a ventilation duct 3. The ventilation duct 3 is arranged inside the sedimentation tank 2 and is connected to the first peripheral wall 21 and the second peripheral wall 22 as well as to the louver unit 4. As a result, the louver unit 4 is supported inside the sedimentation tank 2. Air 10 as a cooling gas is supplied to the ventilation duct 3 from the outside of the deposition tank 2. The louver unit 4 can supply the air 10 supplied from the ventilation duct 3 toward the sinter 11. The ventilation duct 3 may be connected to only one of the first peripheral wall 21 and the second peripheral wall 22. The ventilation duct 3 may not only function as an air supply passage to the louver unit 4, but may also have an opening itself and have a function of supplying the air 10 to the inside of the deposition tank 2.

(Modification example)
The angle θ2 of the rear side surface 602 of the scraper 6 with respect to the radial direction of the sedimentation tank 2 is preferably 25 ° or more, more preferably 30 ° or more. FIG. 8 is a top view similar to FIG. 6 showing a modified example in which the angle θ2 is approximately 40 °.

When the angle θ2 is 30 ° or more as described above, the vector of the load flow toward the cavity generated behind the scraper 6 becomes larger toward the second peripheral wall 22 than when the angle θ2 is less than 30 °. Further, the vector of the sinter 11 flowing from the side of the first peripheral wall 21 to the lower side of the louver unit 4 becomes larger on the side of the second peripheral wall 22. Therefore, it is possible to make the flow velocity of the sinter 11 in the first flow passage 111 closer to the flow velocity of the sinter 11 in the second flow passage 112.

According to the present inventor, the non-uniformity of the distribution of the flow velocity of the sinter 11 in the radial direction of the sinter 2 is suppressed when the angle θ2 is about 30 ° than when the angle θ2 is about 20 °, and the angle θ2 is further suppressed. It was confirmed by experiments that the non-uniformity was suppressed when the temperature was about 40 ° as compared with the case where the temperature was about 30 °.

[Second Embodiment]
First, the configuration of the sinter cooling device 1 according to the second embodiment will be described with reference to FIGS. 9 to 12. The configuration common to the first embodiment is designated by the same reference numerals as those in the first embodiment, and the description thereof will be omitted. FIG. 9 is a top view of a part of the scraper 6 of the present embodiment as viewed from above. FIG. 10 is a cross-sectional view of the scraper 6 of the present embodiment (FIG. XX in FIG. 9). FIG. 11 is a top view similar to FIG. FIG. 12 is a partial cross-sectional view similar to FIG.

As shown in FIGS. 9 and 10, the scraper 6 has a main body portion 60 and a plate-shaped portion 61A. The rear side surface 602 of the main body portion 60 extends along the radial direction of the sedimentation tank 2. The plate-shaped portion 61A is connected to the upper end of the side surface 602 of the main body portion 60 and spreads in the horizontal direction. The plate-shaped portion 61A has an edge 613 and an edge 614. The edge 613 is an outer edge arranged so as to extend linearly along the circumferential direction of the deposit tank 2. In other words, the edge 613 is orthogonal to the radial direction of the sedimentary tank 2 and faces the first peripheral wall 21 in the radial direction of the sedimentary tank 2 as shown in FIG. The edge 614 is the rear outer edge of the plate-shaped portion 61A and is a straight line extending along the rear side surface 602 of the main body portion 60, that is, along the radial direction of the deposit tank 2.

As shown in FIG. 11, the sinter cooling device 1 of the second embodiment is provided inside the sedimentary tank 2 above the scraper 6 and extends in the circumferential direction of the sedimentary tank 2, as in the first embodiment. The louver unit 4 is provided as a gas introduction member arranged in such a manner. The plate-shaped portion 61A of the scraper 6 is arranged between the louver unit 4 and the second peripheral wall 22. Further, when viewed from above, the plate-shaped portion 61A overlaps with the second peripheral wall 22. That is, the plate-shaped portion 61A and the discharge port 24 overlap each other in the radial direction of the deposit tank 2.

Next, the advantages obtained from the above configuration will be described. As the scraper 6 moves with respect to the deposit tank 2, a cavity is formed behind the scraper 6. Sintered ore 11 is supplied to the cavity by the volume of the cavity formed behind the scraper 6 to generate a load flow. Below the louver unit 4, the sinter 11 cannot flow directly from above the louver unit 4. The sinter 11 that has flowed down the first flow passage 111 and the second flow passage 112 flows into the lower part of the louver unit 4. The scraper 6 of the second embodiment has a plate-shaped portion 61A. The plate-shaped portion 61A is connected to the rear upper end of the scraper 6 and is provided so as to extend horizontally to the side of the second flow passage 112. That is, the plate-shaped portion 61A is provided between the louver unit 4 and the second peripheral wall 22. Therefore, the flow of the sinter 11 from the side of the second flow passage 112 to the lower side of the louver unit 4 is obstructed, and the sinter 11 flows in from the side of the first flow passage 111 to the lower side of the louver unit 4. It will be easier. Therefore, the amount of the sinter 11 flowing from the first flow passage 111 to the lower side of the louver unit 4 is larger than the amount of the sinter 11 flowing from the second flow passage 112 to the lower side of the louver unit 4.

As described above, the amount of the sinter 11 flowing from the first flow passage 111 to the lower part of the louver unit 4 is larger than the amount of the sinter 11 flowing from the second flow passage 112 to the lower side of the louver unit 4. By setting the shape or position of the plate-shaped portion 61A so as to be such, the difference between the unloading speed on the side of the first peripheral wall 21 and the unloading speed on the side of the second peripheral wall 22 is within a predetermined range. Becomes easier. The scraper 6 functions as a unloading adjusting plate for reducing and equalizing the difference in unloading speed between the side of the first peripheral wall 21 and the side of the second peripheral wall 22. The plate-shaped portion 61A is not limited to the upper end behind the main body portion 60, and may be connected to the upper side. In short, a space into which the sinter 11 can flow is formed below the plate-shaped portion 61A. It suffices if it is connected to a position where it can be used. Further, the plate thickness of the plate-shaped portion 61A is not particularly limited, and a space having strength to receive the flowing sinter 11 and a space in which the sinter 11 can flow in is formed below the plate-shaped portion 61A. It suffices as long as the plate thickness is such that it can be used.

It is preferable that the plate-shaped portion 61A is not provided so as to extend to the side of the first flow passage 111 in the scraper 6, in other words, the edge 613 of the plate-shaped portion 61A is not located in the first flow passage 111. Since the plate-shaped portion 61A is not provided so as to extend to the side of the first flow passage 111, the sinter unit 11 is placed in the louver unit before the side of the second flow passage 112 from the side of the first flow passage 111. The above-mentioned effect of flowing downward of 4 can be increased.

On the other hand, it is preferable that no gap having a size through which the sinter 11 can pass is provided between the plate-shaped portion 61A and the second peripheral wall 22. Specifically, the plate-shaped portion 61A and the discharge port 24 may overlap in the radial direction of the deposit tank 2. In this case, the above-mentioned effect that the sinter 11 flows into the lower part of the louver unit 4 from the side of the first flow passage 111 first than the side of the second flow passage 112 can be obtained more reliably. Therefore, it becomes easier to bring the unloading speed on the side of the first flow passage 111 closer to the unloading speed on the side of the second flow passage 112.

Although the configuration in which the rear side surface 602 of the main body portion 60 of the scraper 6 extends along the radial direction of the sedimentation tank 2 has been described, the side surface 602 is from the side of the inner peripheral wall 21 as in the first embodiment. It may be inclined with respect to the radial direction of the sedimentation tank 2 so as to move backward toward the side of the outer peripheral wall 22.

[Third Embodiment]
First, the configuration of the sinter cooling device 1 according to the third embodiment will be described with reference to FIGS. 13 to 15. The configuration having the same function as that of the second embodiment is designated by the same reference numerals as those of the second embodiment, and the description thereof will be omitted. FIG. 13 is a top view of a part of the scraper 6 of the present embodiment as viewed from above. FIG. 14 is a cross-sectional view of the scraper 6 of the present embodiment (XIV-XIV view of FIG. 13). FIG. 15 is a top view similar to FIG.

As shown in FIGS. 13 and 14, the rear side surface 602 of the main body portion 60 of the scraper 6 extends along the radial direction of the sedimentation tank 2. The scraper 6 has a plate-shaped portion 61B. The plate-shaped portion 61B connects to the upper end of the rear side surface 602 of the main body portion 60 and extends in the horizontal direction. The plate-shaped portion 61B has an edge 614. The edge 614 is a rear outer edge of the plate-shaped portion 61B, and is a straight line extending rearward from the rear side surface 602 of the main body portion 60 as it goes from the side of the first peripheral wall 21 to the side of the second peripheral wall 22. is there. In other words, the rear edge 614 of the plate-shaped portion 61B is more rearward than the front edge 610 of the plate-shaped portion 61B as it goes from the side of the first peripheral wall 21 to the side of the second peripheral wall 22. It is leaning against 610. In other words, the width of the plate-shaped portion 61B in the circumferential direction of the sedimentary tank 2 increases from the side of the first peripheral wall 21 toward the side of the second peripheral wall 22.

As shown in FIG. 15, the sinter cooling device 1 of the third embodiment is provided inside the sedimentary tank 2 above the scraper 6 and extends in the circumferential direction of the sedimentary tank 2, as in the first embodiment. The louver unit 4 is provided as a gas introduction member arranged in such a manner. As shown in FIG. 15, when viewed from above, the angle θ3 formed by the rear edge 614 of the plate-shaped portion 61B with respect to the radial direction is 0 ° <θ3 <90 °. The plate-shaped portion 61B is located on both the side of the first peripheral wall 21 and the side of the second peripheral wall 22 with respect to the louver unit 4 in the scraper 6 inside the deposition tank 2.

Next, the advantages obtained from the above configuration will be described. The plate-shaped portion 61B is provided not only on the side of the second peripheral wall 22 but also on the side of the first peripheral wall 21 with respect to the louver unit 4 in the scraper 6. Therefore, the range for supporting the plate-shaped portion 61B with respect to the main body portion 60 can be increased, and the supporting strength of the plate-shaped portion 61B can be improved. As a result, the degree of freedom in designing the shape and size of the plate-shaped portion 61B can be improved. For example, the size (that is, the width in the front-rear direction) of the plate-shaped portion 61B in the circumferential direction of the sedimentary tank 2 can be easily increased.

The angle θ3 formed by the rear edge 614 of the plate-shaped portion 61B with respect to the radial direction of the deposition tank 2 is in the range of 0 ° <θ3 <90 °. By making the angle θ3 larger than zero in this way, as in the first embodiment, the direction of the load flow of the sinter 11 has a vector from the side of the first peripheral wall 21 to the side of the second peripheral wall 22. Can be done. Therefore, the amount of the sinter 11 flowing below the louver unit 4 from the side of the first peripheral wall 21 is larger than that from the side of the second peripheral wall 22. As a result, it becomes easier to bring the unloading speed on the side of the first peripheral wall 21 closer to the unloading speed on the side of the second peripheral wall 22.

As the rear edge 614 of the plate-shaped portion 61B moves from the side of the first peripheral wall 21 to the side of the second peripheral wall 22, the rear edge 602 of the main body portion 60, which is the rear end of the scraper 6, moves away from the rear. It is provided. In this case, the plate-shaped portion 61B and the edge 44 on the side of the second peripheral wall 22 of the louver unit 4 overlap with each other rather than the portion where the plate-shaped portion 61B and the edge 43 on the side of the first peripheral wall 21 of the louver unit 4 overlap. The part to be used becomes wider toward the rear side. Therefore, as in the second embodiment, the sinter 11 is more likely to flow into the lower part of the louver unit 4 from the side of the first flow passage 111 than from the side of the second flow passage 112. As a result, the amount of sinter 11 flowing downward from the first flow passage 111 to the louver unit 4 is larger than the amount of sinter 11 flowing downward from the second flow passage 112 to the louver unit 4.

As described above, the third embodiment has the effects of the first embodiment and the second embodiment, and the difference between the unloading speed on the side of the first peripheral wall 21 and the unloading speed on the side of the second peripheral wall 22. Is more easily set within a predetermined range. Although the configuration in which the rear side surface 602 of the main body portion 60 of the scraper 6 extends along the radial direction of the sedimentation tank 2 has been described, the side surface 602 is from the side of the inner peripheral wall 21 as in the first embodiment. It may be inclined with respect to the radial direction of the sedimentation tank 2 so as to move backward toward the side of the outer peripheral wall 22.

[Fourth Embodiment]
First, the configuration of the sinter cooling device 1 according to the fourth embodiment will be described with reference to FIG. The configuration having the same function as that of the first embodiment is designated by the same reference numerals as those of the first embodiment, and the description thereof will be omitted. FIG. 16 is a partial cross-sectional view similar to FIG. 7.

As shown in FIG. 16, the scraper 6 is set so that the height of the scraper 6 between the louver unit 4 and the inner peripheral wall 21 is higher than the height of the scraper 6 between the louver unit 4 and the outer peripheral wall 22. Is provided. Therefore, the cavity generated behind the scraper 6 due to the rotation of the deposit tank 2 is larger on the inner peripheral wall 21 side than on the outer peripheral wall 22 side with respect to the louver unit 4. Therefore, the amount of the sinter 11 that enters the cavity is larger on the inner peripheral wall 21 side than on the outer peripheral wall 22 side, so that the loading speed on the first peripheral wall 21 side and the side of the second peripheral wall 22 It becomes easier to keep the difference from the unloading speed in the predetermined range.

The height of the scraper 6 does not have to be constant on the side of the inner peripheral wall 21 and the side of the outer peripheral wall 22 with respect to the louver unit 4. That is, the scraper 6 may be provided so that the height of the scraper 6 changes according to the radial position of the deposit tank 2. For example, the upper surface of the scraper 6 may be inclined with respect to the horizontal plane. Further, the rear side surface 602 of the scraper 6 may extend along the radial direction of the sedimentary tank 2, or the sedimentary tank 2 so as to move backward from the side of the inner peripheral wall 21 toward the side of the outer peripheral wall 22. May be tilted with respect to the radial direction of.

[Fifth Embodiment]
Further, the configuration of the sinter cooling device 1 according to the fifth embodiment will be described with reference to FIGS. 17 to 19. The configuration common to the first embodiment is designated by the same reference numerals as those in the first embodiment, and the description thereof will be omitted. FIG. 17 is a top view of a part of the scraper 6 of the present embodiment as viewed from above. FIG. 18 is a cross-sectional view of the scraper 6 of the present embodiment (XVII-XVII view of FIG. 17). FIG. 19 is a top view similar to FIG.

As shown in FIGS. 17 and 18, the scraper 6 has a main body portion 60 and a plate-shaped portion 61C. The front side surface 601 of the main body portion 60 extends along the radial direction of the sedimentation tank 2, as shown in FIG. The plate-shaped portion 61C is connected to the upper end of the side surface 601 of the main body portion 60 and spreads in the horizontal direction. The plate-shaped portion 61C has an edge 615 and an edge 616. The edge 615 is an outer edge arranged so as to extend linearly along the circumferential direction of the deposit tank 2. In other words, the edge 615 is orthogonal to the radial direction of the sedimentary tank 2 and faces the first peripheral wall 21 in the radial direction of the sedimentary tank 2 as shown in FIG. The edge 616 is the front outer edge of the plate-shaped portion 61C, and is a straight line extending along the front side surface 601 of the main body portion 60, that is, along the radial direction of the deposit tank 2.

Similar to the first embodiment, the sinter cooling device 1 of the fifth embodiment is provided inside the deposit tank 2 above the scraper 6, and extends in the circumferential direction of the deposit tank 2 as shown in FIG. The louver unit 4 is provided as a gas introduction member arranged in such a manner. The plate-shaped portion 61C of the scraper 6 is arranged between the first peripheral wall 21 and the louver unit 4. That is, when viewed from above, the plate-shaped portion 61C is close to the first peripheral wall 21 and overlaps with the louver unit 4.

The advantages obtained from the above configuration will be described. As the scraper 6 moves with respect to the sedimentary tank 2, the sinter 11 at the bottom of the sedimentary tank 2 is pushed by the scraper 6 and should be discharged from the discharge port 24 to the outside of the sedimentary tank 2. Obstructs the flow. The sinter 11 that cannot flow into the discharge port 24 may get over the scraper 6 from above and hinder the unloading of the sinter behind the scraper 6. This is likely to occur on the side of the first flow passage 111 far from the discharge port 24.

The scraper 6 of the fifth embodiment has a plate-shaped portion 61C. The plate-shaped portion 61C is connected to the upper end of the front side surface 601 of the main body portion 60 of the scraper 6 and is provided so as to spread horizontally on the side of the first flow passage 111. That is, the plate-shaped portion 61C is provided between the first peripheral wall 21 and the louver unit 4. Therefore, the sinter 11 that rises along the front side surface 601 of the main body portion 60 of the scraper 6 and tries to get over the scraper 6 is suppressed by the plate-shaped portion 61C, and the sinter 11 that tries to get over the scraper 6 is suppressed. The flow of 11 is obstructed. By obstructing the flow of the sinter 11 over the scraper 6 on the side of the first flow passage 111, the sinter 11 of the first flow passage 111 will flow down appropriately.

In this way, by setting the shape or position of the plate-shaped portion 61C so as to obstruct the flow of the sinter 11 over the scraper 6 from the side of the first flow passage 111, the load is dropped on the side of the first peripheral wall 21. It becomes easy to keep the difference between the speed and the unloading speed on the side of the second peripheral wall 22 within a predetermined range. The scraper 6 functions as a unloading adjusting plate for reducing and equalizing the difference in unloading speed between the side of the first peripheral wall 21 and the side of the second peripheral wall 22. The plate-shaped portion 61C is not limited to the upper end of the front side surface 601 of the main body portion 60, and may be connected to the upper side of the side surface 601. In short, the plate-shaped portion 61C rises along the front side surface 601 of the main body portion 60 of the scraper 6 and is at a position where the flow of the sinter 11 trying to get over the scraper 6 is obstructed, and the plate-shaped portion 61C and the front side surface 601 All you have to do is connect.

The plate-shaped portion 61C is preferably provided with an edge 615 close to the first peripheral wall 21 so that the gap between the plate-shaped portion 61C and the first peripheral wall is not large enough for the sinter 11 to pass through. By providing the plate-shaped portion 61C extending to the side of the first flow passage 111 in this way, the sintered ore 11 can pass over the scraper 6 through the gap between the plate-shaped portion 61C and the first peripheral wall 21. It can be prevented more reliably. Therefore, it becomes easier to bring the unloading speed on the side of the first flow passage 111 closer to the unloading speed on the side of the second flow passage 112.

The plate-shaped portion 61C may be provided not only on the side of the first flow passage 111 but also on the side of the second flow passage 112. In this case, it is preferable to provide the plate-shaped portion 61C so that the area of the plate-shaped portion 61C viewed from above is larger on the side of the first flow passage 111 than on the side of the second flow passage 112. Further, the plate-shaped portion 61C of the fifth embodiment may be provided together with the scraper 6 of the first to fourth embodiments described above.

[Sixth Embodiment]
The configuration of the sinter cooling device 1 according to the sixth embodiment will be described with reference to FIG. The configuration having the same function as that of the fifth embodiment is designated by the same reference numerals as those of the fifth embodiment, and the description thereof will be omitted. FIG. 20 is a top view similar to FIG.

As shown in FIG. 20, the diameter of the sedimentary tank 2 is such that the front side surface 601 of the main body portion 60, which is the front end of the scraper 6, is directed backward from the side of the inner peripheral wall 21 toward the side of the outer peripheral wall 22. It is tilted with respect to the direction. The plate-shaped portion 61D is connected to the upper end of the front side surface 601 of the main body portion 60 and spreads in the horizontal direction. The plate-shaped portion 61D has an edge 615 and an edge 616. The plate-shaped portion 61D of the scraper 6 is arranged between the first peripheral wall 21 and the louver unit 4. That is, when viewed from above, the plate-shaped portion 61D is close to the first peripheral wall 21 and overlaps with the louver unit 4.

The advantages obtained from the above configuration will be described. The scraper 6 of the sixth embodiment has a plate-shaped portion 61D. The plate-shaped portion 61D is connected to the front upper end of the main body portion 60 of the scraper 6 and is provided so as to spread horizontally to the side of the first flow passage 111. That is, the plate-shaped portion 61D is provided between the first peripheral wall 21 and the louver unit 4. Further, the front side surface 601 of the main body portion 60 of the scraper 6 is inclined with respect to the radial direction of the deposit tank 2 so as to move backward from the side of the inner peripheral wall 21 toward the side of the outer peripheral wall 22.

For this reason, the sinter 11 whose attempt to get over the scraper 6 is suppressed by the plate-shaped portion 61D is second from the side of the first peripheral wall 21 so as to be along the front side surface 601 of the main body portion 60 of the scraper 6. It has a flow vector toward the peripheral wall 22 side. Therefore, the sinter 11 prevented from getting over the scraper 6 on the side of the first flow passage 111 by the plate-shaped portion 61D flows in the first flow along the front side surface 601 of the main body portion 60 of the scraper 6. It becomes easy to flow from the side of the passage 111 to the side of the second flow passage 112. As a result, it is possible to prevent the sinter 11 flowing down after the sinter 11 suppressed by the plate-shaped portion 61D from overcoming the plate-shaped portion 61D.

In this way, the main body portion of the scraper 6 is such that the sinter 11 which is prevented by the plate-shaped portion 61D from getting over the scraper 6 on the side of the first flow passage 111 can easily flow to the side of the second flow passage 112. The scraper 6 is provided so that the front side surface 601 of the 60 is tilted with respect to the radial direction of the deposit tank 2. As a result, it is possible to suppress the scraper 6 of the sintered ore 11 from getting over on the side of the first flow passage 111, and the difference between the unloading speed on the side of the first peripheral wall 21 and the unloading speed on the side of the second peripheral wall 22 can be reduced. It becomes easy to keep it within a predetermined range. The scraper 6 functions as a unloading adjusting plate for reducing and equalizing the difference in unloading speed between the side of the first peripheral wall 21 and the side of the second peripheral wall 22. The plate-shaped portion 61D is not limited to the upper end of the front side surface 601 of the main body portion 60, and may be connected to the upper side of the side surface 601.

Although the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to such examples. It is clear that a person having ordinary knowledge in the field of technology to which the present invention belongs can come up with various modifications or modifications within the scope of the technical ideas described in the claims. , These are also naturally understood to belong to the technical scope of the present invention.

For example, the outer peripheral wall 21 may be provided with the discharge port 24, and the outer peripheral wall 22 may not be provided with the discharge port 24. That is, the outer peripheral wall 22 may be the first peripheral wall, and the inner peripheral wall 21 may be the second peripheral wall. Further, the cross-sectional shape of the sedimentary tank 2 is arbitrary, and is not limited to an inverted trapezoidal shape, and may be a rectangular shape, a trapezoidal shape, or the like. In other words, the inclination of the peripheral walls 21 and 22 of the deposit tank 2 with respect to the vertical direction can be arbitrarily set.

The difference between the unloading speed of the sinter 11 on the side of the first peripheral wall 21 with respect to the louver unit 4 and the unloading speed of the sinter 11 on the side of the second peripheral wall 22 with respect to the louver unit 4 is. It can be detected by the difference between the flow velocity of the sinter 11 in the first flow passage 111 and the flow velocity of the sinter 11 in the second flow passage 112. When it is difficult to detect the difference between the flow velocity of the sinter 11 in the first flow passage 111 and the flow velocity of the sinter 11 in the second flow passage 112 with the actual equipment, for example, a model of the deposition tank 2. It may be detected by using. Specifically, as a model, it has a cross-sectional shape imitating the embodiment (FIG. 7), and it is possible to individually supply sinter to each flow passage, and at the lower part of one of the peripheral walls. Prepare a product with a discharge port. In this model, if sinter is supplied to at least one of the flow passages and deposited in a certain amount, and then the sinter is discharged from the discharge port, the sinter in the flow passage can be reduced. From this decrease rate, the flow rate of the sinter in the flow passage can be calculated. This makes it possible to calculate the difference in the flow velocity in each flow passage. The difference in the flow rate of each flow passage may be calculated directly from the difference in the decrease rate of the sinter in each flow passage.

1 Sinter cooling device 11 Sinter 2 Sedimentation tank 21 Inner peripheral wall (1st peripheral wall)
22 Outer wall (second peripheral wall)
24 Outlet 4 Louver unit (gas introduction member)
6 Scraper 61 Plate-shaped part

Claims (8)

A sinter cooling device for cooling sinter.
Sintered ore from the sinter is supplied from the upper part and deposited, and cooling gas is supplied from the lower part and is provided so as to pass between the deposited sintered ore and head toward the upper part, and is cooled by the cooling gas. An annular sedimentary tank that discharges the sinter from a discharge port provided at the bottom of either the outer peripheral wall or the inner peripheral wall.
A rod-shaped scraper inserted into the sedimentation tank from the discharge port and
A gas introduction member which is arranged inside the deposit tank above the scraper, is provided so as to extend in the circumferential direction of the deposit tank, and introduces the cooling gas into the inside of the deposit tank.
With
Of the outer peripheral wall and the inner peripheral wall, the peripheral wall not provided with the discharge port is designated as the first peripheral wall, and the peripheral wall provided with the discharge port is designated as the second peripheral wall.
In the circumferential direction of the sedimentary tank, the direction in which the scraper advances with respect to the sedimentary tank is the front, and the direction in which the sedimentary tank advances with respect to the scraper is the rear.
When the speed of the sinter flowing toward the rear of the scraper due to the relative movement of the sedimentation tank and the scraper is defined as the unloading speed.
The scraper is set so that the difference between the unloading speed on the side of the first peripheral wall with respect to the gas introducing member and the unloading speed on the side of the second peripheral wall with respect to the gas introducing member is within a predetermined range. Provided,
Sintered ore cooling system. The first aspect of the present invention, wherein the rear end of the scraper is provided so as to be inclined with respect to the radial direction of the deposit tank so that the rear end of the scraper is inclined rearward from the side of the first peripheral wall toward the side of the second peripheral wall. Sintered ore cooling system. The scraper is connected to the rear upper side of the scraper and has a horizontally extending plate-like portion.
The sintered ore cooling device according to claim 1 or 2, wherein the plate-shaped portion is provided between the gas introduction member and the second peripheral wall. The sintered ore cooling device according to claim 3, wherein the plate-shaped portion and the discharge port are overlapped in the radial direction of the sedimentation tank. The scraper is connected to the rear upper side of the scraper and has a horizontally extending plate-like portion.
1 or claim, wherein the rear edge of the plate-like portion is provided so as to move rearward from the rear end of the scraper as it goes from the side of the first peripheral wall to the side of the second peripheral wall. 2. The sinter cooling device according to 2. The scraper is connected to the upper front side of the scraper and has a plate-like portion extending in the horizontal direction.
The sintered ore cooling device according to any one of claims 1 to 5, wherein the plate-shaped portion is provided at least between the gas introduction member and the first peripheral wall. The sixth aspect of the invention, wherein the front end of the scraper is provided so as to be inclined with respect to the radial direction of the sedimentary tank so that the front end of the scraper is inclined rearward from the side of the first peripheral wall toward the side of the second peripheral wall. Sintered ore cooling system. The scraper is provided so that the height of the scraper between the gas introduction member and the first peripheral wall is higher than the height of the scraper between the gas introduction member and the second peripheral wall. The sintered ore cooling device according to any one of claims 1 to 7.

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