CN112683066B

CN112683066B - Sinter cooling device

Info

Publication number: CN112683066B
Application number: CN202010906777.XA
Authority: CN
Inventors: 永井孝典
Original assignee: Primetals Technologies Japan Ltd
Current assignee: Primetals Technologies Japan Ltd
Priority date: 2019-10-17
Filing date: 2020-09-01
Publication date: 2023-03-03
Anticipated expiration: 2040-09-01
Also published as: KR20210045915A; JP2021063632A; CN112683066A; KR102501834B1; JP7062625B2; BR102020015705A2

Abstract

The invention provides a sinter cooling device capable of efficiently cooling. The sinter cooling device is provided with: a plurality of hoppers each having an inner space for receiving a sintered ore and a lower opening capable of discharging the sintered ore, the plurality of hoppers being arranged in a ring shape; a rotary table disposed below the plurality of hoppers at a distance from the lower opening and configured to rotate together with the plurality of hoppers; and a blower for sucking air from above the plurality of hoppers, wherein a gap is formed between lower end portions of a pair of circumferentially adjacent hoppers of the plurality of hoppers.

Description

Sinter cooling device

Technical Field

The present invention relates to a sinter cooling device.

Background

A cooling device having an annular hopper may be used to cool the high-temperature sintered ore.

For example, patent document 1 describes a sintered ore cooling device including an annular table, an annular hopper provided above the table, and a ventilation window and a suction fan for supplying cooling air to an internal space (annular space) of the annular hopper.

The annular hopper is configured to rotate together with the table about a rotation axis along the vertical direction. While the annular hopper is rotating, high-temperature sintered ore is supplied from above to the annular hopper and deposited on the table and in the inner space of the annular hopper.

The cooling air is taken into the inner space of the annular hopper from the outside through an air intake port located at the lower part of the annular hopper. The cooling air is sucked by the suction fan and flows upward through the internal space of the annular hopper in which the sintered ore is accumulated, thereby cooling the sintered ore accumulated in the annular hopper.

The lower end of the annular hopper is open, and the sintered ore cooled in the annular hopper is temporarily deposited on the annular table. The sintered ore on the annular table is continuously discharged by a scraper provided between the lower end of the annular hopper and the upper surface of the annular table as the annular hopper and the annular table rotate.

Documents of the prior art

Patent literature

Patent document 1: japanese patent No. 5138245

However, in the sintered ore cooling device including the annular hopper as described in patent document 1, for example, since the annular hopper has an annular internal space, air is taken in from the radially outer side or the radially inner side to the internal space via the air intake port. For example, air is taken into the inner space of the annular hopper from the radially outer side or the radially inner side through ventilation windows provided in the outer circumferential wall and the inner circumferential wall forming the annular inner space. Alternatively, air is taken into the inner space of the annular hopper from the radially outer side through a lower end opening portion of the annular hopper formed between the outer peripheral wall forming the annular inner space and the annular table.

In this regard, it is desired to introduce cooling air more efficiently into the sintered ore cooling device and to perform efficient cooling.

Disclosure of Invention

Problems to be solved by the invention

In view of the above circumstances, an object of at least one embodiment of the present invention is to provide a sintered ore cooling apparatus capable of more efficient cooling.

Means for solving the problems

A sintered ore cooling device according to at least one embodiment of the present invention includes:

a plurality of hoppers each having an inner space for receiving a sintered ore and a lower opening capable of discharging the sintered ore, the plurality of hoppers being arranged in a ring shape;

a rotary table disposed below the plurality of hoppers at a distance from the lower opening and configured to rotate together with the plurality of hoppers; and

a blower for drawing air from above the plurality of hoppers,

a gap is formed between lower end portions of a pair of circumferentially adjacent hoppers of the plurality of hoppers.

Effects of the invention

According to at least one embodiment of the present invention, a sintered ore cooling device capable of more efficient cooling is provided.

Drawings

Fig. 1 is a schematic cross-sectional view of a sintered ore cooling apparatus according to an embodiment.

Fig. 2 is a schematic cross-sectional view of a sintered ore cooling apparatus according to an embodiment.

Fig. 3 is a schematic plan view of a sintered ore cooling apparatus according to an embodiment.

Fig. 4 is a schematic perspective view of an example of a hopper constituting the sintered ore cooling apparatus shown in fig. 1.

Fig. 5 is a schematic view of the hopper constituting the sintered ore cooling apparatus shown in fig. 1, as viewed in the radial direction.

Fig. 6 is a schematic view of the hoppers constituting the sintered ore cooling device shown in fig. 1, as viewed from the circumferential direction.

Fig. 7 is a schematic view of the hopper constituting the sintered ore cooling apparatus shown in fig. 2, as viewed in the radial direction.

Fig. 8 is a schematic view of a hopper constituting the sintered ore cooling apparatus shown in fig. 2, as viewed from the circumferential direction.

Fig. 9 is a schematic perspective view of an example of a hopper constituting the sintered ore cooling apparatus shown in fig. 1.

Description of the reference numerals

1. Sinter cooling device

3. Inner peripheral wall portion

4. Outer peripheral wall part

5. Sintered ore

6. Inner space

8. Circumferential side wall part

10. Hopper

10a upper end portion

10b lower end part

12. Upper part opening

13. Foundation

14. Lower opening

15. Guide rail

16. Supporting roll

17. Driving motor

18. Static cover

19. Exhaust pipe

20. Blower fan

23. Sealing part

24. Barrel part

25. Sealing liquid

26. Closing plate

27. Supply chute

28. Scraping plate

29. Belt conveyor

30. Rotary workbench

32. Frame structure

33A center bearing

33B center bearing

36. Falling prevention plate

38. Support post

40. Supporting member

42. Arm(s)

46. Radiation beam

48. Support beam

50. Circumferential clearance

62. Peripheral side ventilation window

64. Inner peripheral side ventilation window

66. Side ventilation window

68. Ring-shaped foundation

70. Guide roller

78. Protrusion part

80. Connecting piece

82. Upper panel

84. Support beam

O center axis.

Detailed Description

Hereinafter, several embodiments of the present invention will be described with reference to the drawings. The dimensions, materials, shapes, relative arrangements, and the like of the constituent members described as the embodiments or shown in the drawings are not intended to limit the scope of the present invention, but are merely illustrative examples.

Fig. 1 and 2 are schematic cross-sectional views of a sintered ore cooling device according to an embodiment. Fig. 3 is a schematic plan view of a sintered ore cooling device according to an embodiment. Fig. 4 and 9 are schematic perspective views of an example of the hopper 10 constituting the sintered ore cooling device 1 shown in fig. 1.

The sintered ore is obtained by subjecting iron ore, which is a raw material of pig iron, to a sintering process as a pretreatment. The grain size of the sintered ore is usually about 5mm to 200 mm.

As shown in fig. 1 to 3, the sintered ore cooling device 1 according to one embodiment includes a plurality of hoppers 10 and a rotary table 30 arranged in a ring shape around a central axis O along the vertical direction, and a blower 20 for sucking air from above the plurality of hoppers 10. The sintered ore cooling device 1 further includes a scraper 28 for scraping the sintered ore 5 deposited on the rotary table 30.

The plurality of hoppers 10 are arranged in a ring around the central axis O to form a ring array. Each of the plurality of hoppers 10 has a cylindrical shape, and has an inner peripheral wall portion 3 located on the inner peripheral side in the radial direction, an outer peripheral wall portion 4 located on the outer peripheral side, and circumferential side wall portions 8 located on both sides in the circumferential direction, and an internal space 6 is formed by the inner wall surfaces of the hoppers 10. The plurality of hoppers 10 have an upper opening 12 and a lower opening 14. The sintered ore 5 supplied from above can be received into the internal space 6 through the upper opening 12, and the sintered ore 5 can be discharged below the hopper 10 through the lower opening 14.

The shape of the hopper 10 is not particularly limited, and may have a rectangular cross section as shown in fig. 4, or may have a circular cross section as shown in fig. 9, for example.

A supply chute 27 for supplying the high-temperature sintered ore 5 from a sintering furnace, not shown, to the hoppers 10 is provided above the plurality of hoppers 10. The sintered ore 5 supplied from the supply chute 27 through the upper opening 12 of the hopper 10 is accumulated in the internal space 6 of the hopper 10. An annular stationary cover 18 for covering the upper part of the annular row of the plurality of hoppers 10 is provided above the plurality of hoppers 10.

The rotary table 30 is disposed below the plurality of hoppers 10 at a distance from the lower opening 14, and is configured to rotate around the central axis O together with the plurality of hoppers 10. In the exemplary embodiment shown in fig. 1, an annular base 68 is provided on the base 13 around the center axis O, and a guide roller 70 is provided on a side of the annular base 68. Further, the guide roller 70 engages with a groove provided on the inner circumferential side surface of the rotary table 30, thereby guiding the movement of the rotary table 30 in the rotational direction. In the exemplary embodiment shown in fig. 2, the rotary table 30 is supported by a frame 32 provided on the inner peripheral side of the rotary table 30. The frame 32 is coupled to a center bearing 33A provided at a position of the center axis O on the base 13, and is rotatably supported by a support 38 provided at the center of the rotary table 30 via the center bearing 33A.

As shown in fig. 1 and 2, a plurality of circular guide rails 15 are fixed to a lower surface of the rotary table 30 (see fig. 1) or a frame 32 (see fig. 2) below the rotary table 30. Further, a plurality of support rollers 16 are arranged on the base 13 in a circular shape corresponding to the plurality of guide rails 15 in a circular shape, and the rotary table 30 and the plurality of hoppers 10 are rotatably supported on the support rollers 16 via the guide rails 15. A drive motor 17 (see fig. 2) may be connected to a plurality of the support rollers 16, and the rotary table 30 and the plurality of hoppers 10 may be rotated around the central axis O by a rotational friction force of the support rollers 16 by the drive motor 17.

The scrapers 28 are provided between the lower ends of the plurality of hoppers 10 and the rotary table 30. The scraper 28 is provided to extend from the radially outer side toward the center of the rotary table 30 such that the leading end thereof is positioned above the rotary table 30, and the scraper 28 is configured to guide the sintered ore 5 deposited on the rotary table 30 radially outward of the rotary table 30. Thereby, the sintered ore 5 deposited on the rotary table 30 and the internal space 6 of the hopper 10 is gradually discharged to the outside of the sintered ore cooling device 1.

The blower 20 is connected to an exhaust duct 19 provided above the plurality of hoppers 10. The exhaust duct 19 is connected to the stationary cowl 18. By the suction by the blower 20, air is taken into the respective hoppers 10 through the air intake ports (for example, the lower openings 14) of the plurality of hoppers 10, and the air flows upward in the respective hoppers 10, thereby cooling the sintered ore 5 deposited in the internal space 6 of the hopper 10. The air flowing through the hopper 10 is discharged to the outside of the sintered ore cooling device 1 through the exhaust duct 19.

A dust remover for removing dust contained in the air sucked by the blower 20 may be provided upstream of the blower 20. Further, the air sucked by the blower 20 may be supplied to a boiler for recovering heat of the air.

The sintered ore cooling device 1 includes a seal portion 23 for suppressing leakage of cooling air from between the plurality of hoppers 10 performing rotational motion and the stationary cover 18. The seal portion 23 shown in fig. 1 and 2 includes an annular tub portion 24 provided at upper portions of the inner peripheral wall portion 3 and the outer peripheral wall portion 4, and a circumferential closing plate 26 attached to the stationary cover 18. A predetermined amount of sealing liquid 25 (e.g., water) is supplied to the tub 24, and the lower end of the sealing plate 26 is immersed in the sealing liquid 25, whereby the space between the upper portions of the plurality of hoppers 10 and the stationary cover 18 is sealed.

In the sintered ore cooling device 1 configured as described above, while the plurality of hoppers 10 rotate around the central axis O together with the rotary table 30, the high-temperature sintered ore 5 is supplied from above to the internal space 6 of each hopper 10 through the supply chute 27. The sintered ore 5 is layered and deposited in the internal space 6 of each hopper 10. The sintered ore 5 accumulated in the internal space 6 is cooled by air taken into the hopper 10 by the blower 20.

The sintered ore 5 deposited on the rotary table 30 below the plurality of hoppers 10 is guided by the scrapers 28 radially outward in accordance with the rotation of the plurality of hoppers 10 and the rotary table 30, and is discharged from each hopper 10 through an open portion formed between the lower end of the outer peripheral wall portion 4 of the plurality of hoppers 10 and the rotary table 30. The sintered ore 5 discharged by the scraper 28 is conveyed by a conveying means such as a belt conveyor 29.

Hereinafter, the sintered ore cooling apparatus 1 according to some embodiments will be described in more detail.

Fig. 5 is a schematic view of the hopper 10 of the sintered ore cooling device 1 shown in fig. 1 as viewed from the radial direction, and fig. 6 is a schematic view of the hopper of the sintered ore cooling device 1 shown in fig. 1 as viewed from the circumferential direction. Fig. 7 is a schematic view of the hopper 10 of the sintered ore cooling device 1 shown in fig. 2 as viewed in the radial direction, and fig. 8 is a schematic view of the hopper of the sintered ore cooling device 1 shown in fig. 2 as viewed in the circumferential direction. In fig. 5 to 8, the stationary cover 18 and the seal portion 23 are not shown.

The plurality of hoppers 10 respectively include: an upper end 10a including an upper opening 12; and a lower end 10b comprising a lower opening 14. As shown in fig. 5 and 7, a gap (circumferential gap) 50 is formed between the lower end portions 10b of a pair of circumferentially adjacent hoppers 10 among the plurality of hoppers 10 constituting the sintered ore cooling device 1. In the exemplary embodiment shown in fig. 5 and 7, the distance in the circumferential direction between the circumferential side wall portions 8 of the pair of hoppers 10 adjacent in the circumferential direction increases as going downward.

In the above embodiment, since the plurality of hoppers 10 for accumulating the sintered ore 5 are arranged in a ring shape and the circumferential gap 50 is formed between the lower end portions of the pair of hoppers 10 adjacent in the circumferential direction, air from the circumferential gap 50 can be taken into each hopper 10 by suction by the blower 20 as shown by the arrows in fig. 5 and 7. That is, as in the conventional sintered ore cooling device, air can be taken into the hopper 10 from the circumferential direction in addition to the hopper from the radial direction. Therefore, according to the above-described embodiment, more air is easily sucked into the hopper 10, and the sintered ore 5 can be cooled more efficiently.

In the exemplary embodiment shown in fig. 5 to 8, the inner peripheral wall portion 3 of the hopper 10 is separated from the rotary table 30. Therefore, air can be taken in from the region on the inner peripheral side of the hopper 10 through the lower opening 14 of the hopper 10.

In the sintered ore cooling apparatus using the conventional annular hopper, the inner peripheral wall of the annular hopper is generally connected to the rotary table, and the inner peripheral wall is not separated from the rotary table, so that air from the region on the inner peripheral side of the annular hopper cannot be taken in through the lower opening of the annular hopper. In this regard, as described above, since air can be taken in from the region on the inner peripheral side of the hopper 10, more air can be easily taken in to the inside of the hopper 10, and the sintered ore 5 can be cooled more efficiently.

Air from the circumferential gap 50 may also be drawn into the interior space 6 of the hopper 10 via the lower opening 14 of the hopper 10. Alternatively, a ventilation window forming a passage for taking in air from the outside may be provided in the wall surface of the hopper 10, and the air from the circumferential gap 50 may be taken into the internal space 6 of the hopper 10 through the ventilation window. In the exemplary embodiment shown in fig. 5 to 8, the side vent window 66 is provided in the circumferential side wall portion 8, and the internal space 6 of the hopper 10 communicates with the circumferential gap 50 via the passage formed by the side vent window 66. Air from the circumferential gap 50 can be taken into the hopper 10 through the side louvers 66.

In the exemplary embodiment shown in fig. 5 to 8, an inner peripheral side louver 64 is incorporated in the inner peripheral wall portion 3 of the hopper 10, and air can be taken into the hopper 10 from the region on the inner peripheral side of the hopper 10 through the inner peripheral side louver 64. In the exemplary embodiment shown in fig. 5 to 8, an outer peripheral ventilation window 62 is incorporated in the outer peripheral wall portion 4 of the hopper 10, and air can be taken into the hopper 10 from the outer peripheral region of the hopper 10 through the outer peripheral ventilation window 62.

In some embodiments, as shown in fig. 4, 5, and 7, for example, the plurality of hoppers 10 forming the annular row are arranged such that the upper end portions 10a of a pair of hoppers 10 adjacent in the circumferential direction abut against each other.

Since the plurality of hoppers 10 forming the annular row are arranged such that the upper end portions 10a of the pair of hoppers 10 adjacent in the circumferential direction abut against each other, for example, the sintered ore 5 can be prevented from dropping into the gap between the pair of adjacent hoppers 10, and the sintered ore 5 supplied from above can be appropriately introduced into the internal space 6 of the hopper 10.

In some embodiments, as shown in fig. 4, for example, the upper end portions 10a of a pair of circumferentially adjacent hoppers 10 are coupled to each other by a coupling member 80. By thus coupling the upper end portions 10a of the pair of hoppers 10 adjacent in the circumferential direction by the coupling members 80, the upper end portions 10a of the hoppers 10 can be brought into contact with each other more reliably.

In some embodiments, as shown in fig. 1 to 9, for example, the sintered ore cooling device 1 includes a support member 40, and the support member 40 is provided on the inner peripheral side of the annular row of the plurality of hoppers 10 and supports the plurality of hoppers 10.

According to the above embodiment, since the support member 40 for supporting the plurality of hoppers 10 is provided on the inner peripheral side of the annular row of the plurality of hoppers 10, the scraper 28 provided so as to extend from the radially outer side toward the center of the rotary table 30 does not interfere with the support member 40. Therefore, the sintered ore 5 deposited on the rotary table 30 can be appropriately discharged by the scrapers 28 in a state where the hopper 10 is supported by the support members 40.

In the exemplary embodiment shown in fig. 1-9, the support members 40 are disposed outside of each hopper 10.

In the sintered ore cooling apparatus using the conventional annular hopper, the outer peripheral wall of the annular hopper is supported, and therefore, a support member extending inside the annular hopper is generally provided. In this case, since the support member is exposed to high temperature, the support member may need to be cooled. In contrast, in the above-described embodiment, since the support member 40 is provided outside the hopper 10, the necessity of cooling the support member is reduced as compared with the case where the support member is provided inside the hopper 10. Therefore, the structure and means for cooling the support member 40 can be omitted or simplified, thereby achieving cost reduction.

In some embodiments, as shown in fig. 1, 4 to 6, and 9, for example, the support member 40 includes an arm 42, and the arm 42 is fixed to a portion of the rotary table 30 on the inner circumferential side of the annular row of the plurality of hoppers 10.

In this way, each hopper 10 can be appropriately supported by a simple structure using the arm 42 fixed to a portion on the inner circumferential side of the annular row of the plurality of hoppers 10 on the rotary table 30. Further, since the support member 40 (arm 42) is fixed to a portion on the inner peripheral side of the annular row in the rotating table 30, a region on the inner peripheral side of the support member 40 can be effectively used for applications other than support.

In some embodiments, as shown in fig. 2 and 7 to 8, for example, the support member 40 includes a plurality of radiation beams 46 rotatably supported by the support 38. Each radiation beam 46 extends radially from a center bearing 33B provided on the outer peripheral side of the support column, and is rotatably supported by the support column 38 via the center bearing 33B.

In the exemplary embodiment shown in fig. 7 and 8, the plurality of hoppers 10 may have a projection 78 provided to project in the circumferential direction from the circumferential side wall 8 of the hopper 10, and the plurality of hoppers 10 may be supported by the radiation beam 46 via the projection 78. As shown in fig. 7 and 8, a support beam 48 for reinforcing the support of the radiation beam 46 may be provided between the radiation beam 46 and the rotary table 30.

In some embodiments, as shown in fig. 1 to 4, 6, and 8, for example, the sintered ore cooling apparatus 1 includes a fall prevention plate 36 provided on the rotary table 30 at a position away from the plurality of hoppers 10 toward the inner peripheral side, the fall prevention plate 36 being configured to prevent the sintered ore 5 from falling from the rotary table 30.

In the sintered ore cooling device 1 in which a plurality of hoppers 10 are arranged in a ring shape, unlike the conventional ring-shaped hopper, the lower end of the inner peripheral wall portion 3 of the hopper 10 is vertically separated from the rotary table 30. Therefore, the sintered ore 5 discharged from the lower opening 14 of the hopper 10 may be deposited on the rotary table 30 at a position radially inward of the lower end of the inner peripheral wall portion 3. Further, the sintered ore 5 deposited on the rotary table 30 may be pushed radially inward by the scrapers 28.

In this regard, in the above-described embodiment, since the fall prevention plates 36 are provided at positions away from the plurality of hoppers 10 toward the inner circumferential side, the falling of the sintered ore 5 from the rotary table 30 toward the inner circumferential side can be suppressed. Further, since the fall prevention plates 36 are provided at positions away from the plurality of hoppers 10 toward the inner peripheral side, a space is formed between the hoppers 10 and the fall prevention plates 36, and thus air can be appropriately taken in from the region on the inner peripheral side of the hoppers 10.

As described above, the plurality of hoppers 10 may have a circular cross-sectional shape as shown in fig. 9, for example. In this case, the upper surface plate 82 may be provided to connect the upper end portions 10a of the plurality of hoppers 10 to each other. This prevents the sintered ore 5 supplied from above from falling between the hopper 10 and the hopper, and the sintered ore 5 can be appropriately received in the internal space 6 of the hopper 10. As shown in fig. 9, the upper panel 82 may be supported by a support beam 84 provided between the upper panel 82 and the rotary table 30.

Hereinafter, the sintered ore cooling apparatus according to some embodiments will be described in outline.

(1) A sintered ore cooling device according to at least one embodiment of the present invention includes:

a blower for drawing air from above the plurality of hoppers,

According to the configuration of the above (1), since the plurality of hoppers for accumulating the sintered ore are arranged in a ring shape and a gap is formed between the lower end portions of the pair of hoppers adjacent in the circumferential direction, air from the gap can be taken into each hopper by suction by the blower. That is, as in the conventional sintered ore cooling device, air can be taken into the hopper from the circumferential direction in addition to the radial direction. Therefore, according to the configuration of the above (1), more air is easily sucked into the hopper, and thereby the sintered ore can be cooled more efficiently.

(2) In some embodiments, in addition to the structure of the above (1),

the sintered ore cooling device includes a support member that is provided on an inner peripheral side of the annular row of the plurality of hoppers and supports the plurality of hoppers.

The sintered ore deposited on the rotary table is usually scraped radially outward by a scraper provided between the lower end of the hopper and the rotary table. The squeegee is provided to extend from the radially outer side toward the center of the rotary table so that the front end thereof is located on the rotary table. In this regard, according to the configuration of the above (2), since the support member for supporting the plurality of hoppers is provided on the inner circumferential side of the annular row of the plurality of hoppers, the support member does not interfere with the flight. Therefore, the sintered ore deposited on the rotary table can be appropriately discharged by the scraper while the hopper is supported by the support member.

(3) In some embodiments, in addition to the structure of the above (2),

the support member is provided outside each of the hoppers.

According to the configuration of the above (3), since the plurality of hoppers are arranged in the ring shape as described in the above (1), each hopper can be appropriately supported by the support member provided outside the hopper. Further, since the support member is provided outside the hopper in this manner, the necessity of cooling the support member is reduced as compared with the case where the support member is provided inside the hopper. Therefore, the structure and the device for cooling the support member can be omitted or simplified, and cost reduction can be achieved.

(4) In some embodiments, in addition to the structure of the above (2) or (3),

the support member is fixed to a portion of the rotary table on the inner peripheral side of the annular row.

According to the configuration of the above (4), the respective hoppers can be appropriately supported by a simple configuration using the supporting member fixed to the inner peripheral side portion of the annular row in the rotary table. Further, since the support member is fixed to the rotary table at a portion on the inner peripheral side of the annular row, the region on the inner peripheral side of the support member can be effectively used for applications other than support.

(5) In some embodiments, in addition to the structure of the above (2) or (3),

the sinter cooling device is provided with:

a support column disposed at the center of the rotary table;

a center bearing provided on an outer peripheral side of the column; and

a plurality of radial beams extending radially from the center bearing and rotatably supported by the support via the center bearing,

the support member includes the plurality of radiation beams.

According to the structure of the above (5), the respective hoppers can be appropriately supported by the radiation beam in which the support column is rotatably supported via the center bearing.

(6) In several embodiments, in addition to any one of the structures (1) to (5) above,

each of the hoppers includes an upper end portion having an upper opening for taking the sintered ore into the inner space,

the plurality of hoppers constituting the annular row are arranged so that the upper end portions of the pair of hoppers adjacent to each other in the circumferential direction abut against each other.

According to the configuration of the above (6), since the plurality of hoppers constituting the annular row are arranged such that the upper end portions of the pair of hoppers adjacent in the circumferential direction abut each other, it is possible to prevent, for example, the sintered ore from dropping into the gap between the pair of adjacent hoppers, and to appropriately introduce the sintered ore supplied from above into the internal space of the hopper.

(7) In some embodiments, in addition to the structure of (6) above,

the sintered ore cooling device is provided with a connecting member that connects the upper end portions of the pair of hoppers adjacent in the circumferential direction to each other.

According to the structure of the above (7), since the upper end portions of the pair of hoppers adjacent in the circumferential direction are connected by the connecting members, the upper end portions of the hoppers can be reliably brought into contact with each other.

(8) In several embodiments, in addition to any one of the structures (1) to (7) above,

the sinter cooling device is provided with a fall prevention plate which is arranged at a position on the rotary table away from the plurality of hoppers towards the inner peripheral side and is used for preventing the sinter from falling from the rotary table.

According to the configuration of the above (8), since the fall prevention plate is provided at a position away from the plurality of hoppers toward the inner peripheral side, the falling of the sintered ore from the rotary table toward the inner peripheral side can be suppressed. Further, since the fall prevention plate is provided at a position away from the plurality of hoppers toward the inner peripheral side, a space is formed between the hoppers and the fall prevention plate, and thus air can be appropriately taken in from the region on the inner peripheral side of the hoppers.

While the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and includes a mode in which the above embodiments are modified and a mode in which these modes are appropriately combined.

In the present specification, expressions such as "in a certain direction", "along a certain direction", "parallel", "orthogonal", "central", "concentric", or "coaxial" which indicate relative or absolute arrangements indicate not only an arrangement as strict as possible but also a state in which the elements are relatively displaced by an angle or a distance to the extent that the same function can be obtained, with a tolerance.

For example, expressions indicating states in which objects are equal, such as "identical", "equal", and "homogeneous", indicate not only states in which objects are exactly equal but also states in which tolerances or differences in the degree to which the same functions can be obtained are present.

In the present specification, the expressions indicating the shapes such as the rectangular shape and the cylindrical shape indicate not only the shapes strictly geometrically such as the rectangular shape and the cylindrical shape, but also shapes including the concave and convex portions, the chamfered portions, and the like within a range where the same effects can be obtained.

In the present specification, an expression "including", or "having" one constituent element is not an exclusive expression excluding the presence of other constituent elements.

Claims

1. A sinter cooling device, wherein,

the sinter cooling device is provided with:

a blower for drawing air from above the plurality of hoppers,

a gap is formed between lower end portions of a pair of the plurality of hoppers which are adjacent in the circumferential direction,

the plurality of hoppers each have a circumferential side wall portion on both sides in the circumferential direction,

the circumferential side wall portion extends in an up-down direction between an upper opening and the lower opening,

the distance in the circumferential direction between the circumferential side wall portions of the pair of circumferentially adjacent hoppers is configured to increase as it goes downward from the upper end portions to the lower end portions of the pair of hoppers.

2. The sinter cooling device as claimed in claim 1, wherein,

the sintered ore cooling device is provided with a support member which is provided on the inner peripheral side of the annular row of the plurality of hoppers and supports the plurality of hoppers.

3. The sinter cooling device as claimed in claim 2, wherein,

the support member is disposed outside each of the hoppers.

4. The sinter cooling device according to claim 2 or 3, wherein,

5. The sinter cooling device as claimed in claim 2 or 3, wherein,

the sinter cooling device is provided with:

a support column disposed at the center of the rotary table;

a center bearing provided on an outer peripheral side of the column; and

a plurality of radial beams that extend radially from the center bearing and are rotatably supported by the support column via the center bearing,

the support member includes the plurality of radiation beams.

6. The sinter cooling device according to any one of claims 1 to 3, wherein,

each of the hoppers including an upper end portion having an upper opening for drawing the sintered ore into the inner space,

the plurality of hoppers forming the annular row are arranged so that the upper end portions of the pair of hoppers adjacent to each other in the circumferential direction abut against each other.

7. The sinter cooling device of claim 6, wherein,

the sintered ore cooling device includes a coupling member that couples the upper end portions of the pair of hoppers adjacent to each other in the circumferential direction.

8. The sinter cooling device according to any one of claims 1 to 3, wherein,

the plurality of hoppers each have an inner peripheral wall portion located on an inner peripheral side in a radial direction,

the inner peripheral wall portion is separated from the rotary table,