JP7207097B2 - Sinter cooling device - Google Patents

Description

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

Conventionally, a sintered ore cooling device for cooling high-temperature sintered ore supplied from a sintering machine is known. For example, in Patent Document 1, an annular sedimentation tank in which sintered ore from the sintering machine is deposited from above and discharged from the lower outer peripheral part, and a A sintered ore cooling device is disclosed that includes a plurality of ventilation ducts arranged in parallel with each other and a plurality of central louver portions annularly arranged by connecting adjacent ventilation ducts. This sintered ore cooling device takes in outside air from the ventilation duct, supplies the taken-in air from between the louvers of the central louver part to the lower center of the deposition tank, and flows the above-mentioned air from the bottom to the top of the deposited sintered ore. to cool the entire sintered ore.

JP 2008-232519 A

The present inventor newly discovered the following problems. That is, the flow velocity of the sintered ore along the central louver portion of the sintered ore flowing downward from above inside the sedimentation tank is closer to the part where the central louver portion is supported by the ventilation duct (i.e., the central louver It becomes faster on the far side from the relevant part (that is, closer to the center of the central louver portion) than toward both ends of the portion. This is because the flow of sintered ore is resisted not only by the central louver but also by the ventilation duct on the side of the central louver near the part supported by the ventilation duct, so the flow speed becomes slow. is. Therefore, if the same amount of air is supplied to the sintered ore inside the sedimentation tank from the central louver regardless of the distance from the ventilation duct in the central louver, the sintered ore in the portion where the flow rate is high Insufficient cooling or overcooling of the sinter in the areas of low flow velocity can result. As a result, the temperature of the discharged sintered ore may vary, and the cooling performance may deteriorate.

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 problems, according to one aspect of the present invention, there is provided a sintered ore cooling device for cooling sintered ore, wherein the sintered ore from the sintering machine is supplied from above and accumulated. , a ring-shaped sedimentation tank in which a cooling gas is supplied from the bottom and passes through between the deposited sintered ore and goes to the top, and the sintered ore cooled by the cooling gas is discharged from the lower outlet. , arranged to extend in the circumferential direction inside the deposition tank, introduces cooling gas into the interior of the deposition tank, and is farther from the supported portion than the side closer to the supported portion supported by other members, A sinter cooling device is provided, comprising: a gas introduction member having an upper end of an opening in the side surface provided upward.

The gas introducing member may be hollow and open downward.

The side surface of the gas introducing member may have a shape in which the lower edge on the side farther from the supported portion is notched upward.

A plurality of the other members are arranged so as to extend in the radial direction inside the deposition tank, are connected to at least one of the inner peripheral wall and the outer peripheral wall of the deposition tank, and are a second gas for introducing the cooling gas into the deposition tank. It may be an introduction member.

As explained above, according to the sintered ore cooling device according to the present invention, it is possible to suppress the deterioration of the cooling performance.

1 is an axial cross-sectional view of a sintered ore cooling device according to an embodiment of the present invention; FIG. It is a top view of the sintered ore cooling device which concerns on the same embodiment. FIG. 5 is a schematic view of the lower part of the deposition tank according to the same embodiment as viewed from above (see III-III in FIG. 5). FIG. 3 is a schematic diagram of a plurality of radial ducts and circumferential ducts installed in the deposition tank according to the same embodiment viewed from the horizontal direction (IV-IV view of FIG. 3). FIG. 3 is an axial cross-sectional view of the deposition tank according to the same embodiment (view VV in FIG. 3); It is explanatory drawing of operation|movement of the sintered ore cooling device which concerns on the same embodiment. It is explanatory drawing of operation|movement of the sintered ore cooling device which concerns on the same embodiment.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the present specification and drawings, constituent elements having substantially the same functional configuration are denoted by the same reference numerals, thereby omitting redundant description.

First, with reference to FIGS. 1 to 3, a schematic configuration of a sintered ore cooling device according to an embodiment will be described. FIG.1 and FIG.2 is a schematic diagram which shows schematic structure of the sintered ore cooling device 1 which concerns on this embodiment. FIG. 1 shows a cross-section through the sinter cooling device 1 in a plane passing through the axis 200 of the sedimentation tank 2 . FIG. 2 is a top view of a portion of the sintered ore cooling device 1 viewed from above.

The sintered ore cooling device 1 is a cooler for cooling the sintered ore 11, and includes a main body, a raking portion, a driving portion, a suction portion, and a sintered ore supply portion. The main body includes a sedimentation tank 2, a gas introduction member 3 and a bridge 5. As shown in FIG. For convenience of explanation, illustration of the gas introduction member 3 is omitted in FIG. The scraping section has a scraper 6 . The drive section has a plurality of support rollers 70 and a drive motor 71 . The suction section has a hood 80 , an exhaust duct 81 , a suction fan 82 and a boiler 83 . The sinter supply section has a supply chute 9 .

FIG. 3 is a schematic view of part of the interior of the deposition tank 2 as viewed from above. FIG. 4 is a schematic diagram of a portion of the gas introduction member 3 installed inside the deposition tank 2 viewed from the horizontal direction. FIG. 5 schematically shows a cross section through the sedimentation tank 2 with a plane passing through the axis 200 . 3 corresponds to the view III-III of FIG. 5, FIG. 4 corresponds to the view IV-IV of FIG. 3, and FIG. 5 corresponds to the view VV of FIG.

As shown in FIGS. 1 and 5, the deposition 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 an axis 200 and extends horizontally. Hereinafter, the direction around the shaft 200 will be referred to as the circumferential direction. A radial direction centered on the axis 200, in other words, a linear direction extending horizontally through the axis 200 is called a 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 deposition tank 2 has an annular shape extending in the circumferential direction. A cross section of the deposition tank 2 cut along a plane passing through the axis 200 is an inverted trapezoid 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, has a lower end connected to the inner peripheral edge of the table 20, and is inclined with respect to the vertical direction so as to go radially inward (that is, toward the shaft 200) as it goes upward. The outer peripheral wall 22 is an outer peripheral wall, has a lower end facing the upper surface of the table 20, and is inclined with respect to the vertical direction so as to extend radially outward as it goes upward. A discharge port 24 for the sintered ore 11 is provided at the bottom 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 deposition tank 2 .

As shown in FIGS. 3 and 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 portions 211 are alternately adjacent to each other in the circumferential direction of the inner peripheral wall 21 and provided over the entire circumference of the inner peripheral wall 21 . As shown in FIG. 5, in each louver portion 211, a plurality of louvers (that is, blades) 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 deposition tank 2 . In other words, the gaps between the vertically adjacent louvers 212 are inclined with respect to the horizontal direction so as to be directed downward toward the interior of the deposition tank 2 .

As shown in FIGS. 3 and 5, a plurality of openings 220 and a plurality of louvers 221 are provided above the outlet 24 in the lower portion of the outer peripheral wall 22 . The openings 220 and the louver portions 221 are alternately adjacent to each other in the circumferential direction of the outer peripheral wall 22 and provided over the entire circumference of the outer peripheral wall 22 . The opening 220 is positioned radially opposite the opening 210 of the inner peripheral wall 21 . As shown in FIG. 5, 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 deposition tank 2 . In other words, the gaps between the vertically adjacent louvers 222 are inclined with respect to the horizontal direction so as to be directed downward toward the interior of the deposition tank 2 .

The gas introduction member 3 is installed inside the deposition tank 2 . The gas introduction member 3 has a radial duct 31 and a circumferential duct 32 .

As shown in FIGS. 3 to 5, the radial duct 31 is a tubular box-shaped member with air inlets 310 at both ends. The wide side surfaces of the radial duct 31 are inverted trapezoidal, and the upper and lower surfaces are rectangular. The lower surface of the radial duct 31 is closed. A connection opening 311 is provided in the central portion of the radial duct 31 across the upper surface and wide side surfaces. The connection opening 311 is provided so as to cut out a rectangular shape from both wide side surfaces.

As shown in FIGS. 3 to 5, the circumferential duct 32 is a semi-cylindrical member with an open bottom. The circumferential duct 32 is formed, for example, by bending a plate member. The outer surface of the circumferential duct 32 has side surfaces 321 , 322 and an upper surface 323 . Both side surfaces 321 and 322 are arranged along the vertical direction. The upper surface 323 is inclined with respect to the horizontal direction so as to be inclined downward from one side surface 321 to the other side surface 322 . That is, the top of the circumferential duct 32 is in the shape of a scalene. A connection opening 320 is provided at each end 326 of the circumferential duct 32 . The connection openings 320 are provided by cutting both ends of the side surfaces 321 and 322 into rectangular shapes, and open to the lower edge of the circumferential duct 32 .

As shown in FIGS. 4 and 5, both side surfaces 321 and 322 have a shape in which the lower edge on the side far from both ends 326 of the circumferential duct 32, that is, on the central portion 327 side, is notched upward. That is, recesses 324 are provided in the lower central sides of both side surfaces 321 and 322 . The recessed portion 324 is a notch recessed upward in a trapezoidal shape with respect to the lower edges of the side surfaces 321 and 322 .

The radial duct 31 is arranged to extend radially inside the sedimentation tank 2 and connects the inner peripheral wall 21 and the outer peripheral wall 22 . A plurality of radial ducts 31 are arranged side by side in the circumferential direction of the deposition tank 2 . Specifically, one end of the radial duct 31 having an air inlet 310 fits into the opening 210 at the bottom of the inner peripheral wall 21 . The other end of radial duct 31 having inlet 310 fits into opening 220 at the bottom of outer peripheral wall 22 .

A circumferential duct 32 connects to the radial duct 31 . The circumferential ducts 32 are arranged to connect radial ducts 31 adjacent to each other in the circumferential direction of the deposition tank 2 . The plurality of circumferential ducts 32 are arranged in an annular shape extending in the circumferential direction over the entire circumference of the deposition tank 2 as a whole. Specifically, the end 326 of the circumferential duct 32 with the connection opening 320 fits into the connection opening 311 of the radial duct 31 . The edge of the radial duct 31 forming the connection opening 311 and the edge of the circumferential duct 32 forming the connection opening 320 are joined together by welding or the like. Also, the ends 326 of the circumferential ducts 32 facing each other above the connection opening 311 of the radial duct 31 are joined together by welding or the like. The end portion 326 functions as a supported portion supported by the radial duct 31 . The inside of the radial duct 31 and the inside of the circumferential duct 32 communicate with each other via connection openings 311 and 320 .

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

The scraper 6 is a rod-shaped member and is inserted into the sedimentation tank 2 through the discharge port 24 . The scraper 6 is arranged below the gas introduction member 3 so as to extend in the horizontal direction.

The plurality of support rollers 70 are arranged in two circumferentially extending annular rows on the base 50 and are in contact with the rails 23 of the table 20 . A drive motor 71 is connected to some of the plurality of support rollers 70 and generates a force to rotate these support rollers 70 . The table 20 is rotationally driven by the frictional force between the rotationally driven support roller 70 and the rail 23 , and the deposition tank 2 is rotated around the axis 200 .

As shown in FIG. 2 , the hood 80 has an annular shape and is arranged to cover the upper opening of the sedimentation tank 2 . The sedimentation tank 2 rotates with respect to the hood 80 whose position is fixed with respect to the base 50 . One end of exhaust duct 81 is connected to hood 80 and communicates with the inside of 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 before the suction fan 82 . The boiler 83 recovers thermal energy from the high temperature air 10 from the hood 80 by performing heat exchange. A dust remover 84 may be connected between the boiler 83 and the hood 80 . Also, a seal structure is provided to prevent air 10 from leaking from the gap between the hood 80 and the upper end of the deposition tank 2 .

The supply chute 9 is arranged so as to pass through the hood 80 . A high-temperature sintered ore 11 before cooling is supplied from a sintering machine to the supply chute 9 . The sintered ore 11 supplied to the supply chute 9 passes through the supply chute 9 and is supplied from the upper part of the sedimentation tank 2 to the inside of the sedimentation tank 2 and deposited. In addition, the inside of the supply chute 9 may be provided so as to always be filled with a predetermined amount of sintered ore 11 . In this case, since the sintered ore 11 is continuously supplied from the supply chute 9 to the sedimentation tank 2 according to the rotation of the sedimentation tank 2, the fluctuation of the height of the sintered ore 11 deposited in the sedimentation tank 2 can be suppressed. .

Next, with reference to Drawing 1, Drawing 6, and Drawing 7, operation of sinter cooling device 1 is explained. FIG. 6 is a schematic diagram similar to FIG. 4, in which the flow of the air 10 is indicated by dashed-dotted arrows. FIG. 7 is a schematic diagram of a cross section similar to FIG. 5, and shows the flow of the sintered ore 11 with solid arrows.

Due to the relative movement of the sedimentation tank 2 and the scraper 6 in the circumferential direction of the sedimentation tank 2, the sintered ore 11 in the lower part of the sedimentation tank 2 is pushed by the scraper 6 and discharged from the discharge port 24 to the outside of the sedimentation tank 2. . In the circumferential direction of the deposition tank 2, the direction in which the scraper 6 advances with respect to the deposition tank 2 is defined as the front side, and the direction in which the deposition tank 2 advances with respect to the scraper 6 is defined as the rear side. In FIG. 2, an arrow 201 indicates the advancing direction of the sedimentation tank 2 relative to the scraper 6 (that is, rearward). Rotation of the sedimentation tank 2 pushes the sintered ore 11 in front of the scraper 6 and creates a cavity behind the scraper 6 . As the sintered ore 11 enters this cavity from above, a downward flow of the sintered ore 11 is generated inside the sedimentation tank 2 (so to speak, unloading).

On the other hand, the air 10 inside the hood 80 is sucked by the suction fan 82 , so that the outside air 10 is taken into the sedimentation tank 2 . As shown in FIG. 7, the air 10 is directly taken into the deposition tank 2 through the gaps between the louvers 212 of the louver portions 211 of the inner peripheral wall 21 of the deposition tank 2 . The same applies to the louver portion 221 of the outer peripheral wall 22 . On the other hand, the air 10 is taken into the sedimentation tank 2 also from the intake port 310 of the radial duct 31 connected to both peripheral walls 21 and 22 . The air 10 taken into the radial duct 31 from the air intake port 310 is introduced into the circumferential duct 32 connected to the radial duct 31, flows through the space 34 inside the circumferential duct 32, and flows through the opening below. It is supplied to the inside of the sedimentation tank 2 from the part.

The outside air 10 taken into the sedimentation tank 2 passes through the deposited sintered ore 11 and moves from the bottom to the top of the sedimentation tank 2 . During this time, the sintered ore 11 is cooled by the air 10 absorbing the heat of the sintered ore 11 . The air 10 functions as gas for cooling the sintered ore 11 inside the sedimentation tank 2 (hereinafter also referred to as cooling gas). The deposition bath 2 functions as a cooling bath. The high-temperature air 10 that has moved into the hood 80 is exhausted through the exhaust duct 81 . The cooled sintered ore 11 is continuously discharged from the outlet 24 in the lower part of the sedimentation tank 2 as the sedimentation tank 2 rotates. That is, the sintered ore 11 is continuously supplied from the upper part of the sedimentation tank 2, is cooled by exchanging heat with the air 10 sucked from the outside, descends inside the sedimentation tank 2 in sequence, and finally reaches the scraper 6 will be scraped out. At this time, the sintered ore 11 inside the sedimentation tank 2 gradually moves downward, and is cooled by the air 10 that is sucked upward while gradually moving downward. The entire ore 11 is efficiently cooled. Thus, the sintered ore cooling device 1 enables countercurrent heat exchange in which a cooling gas such as air flows upward from the bottom.

Next, with reference to Drawing 3, Drawing 6, and Drawing 7, the advantage of sinter cooling device 1 of this embodiment is explained. The circumferential duct 32 is arranged inside the deposition tank 2 so as to extend in the circumferential direction. The air 10 taken into the radial duct 31 is supplied to the space 34 inside the circumferential duct 32 , and the air 10 circulates in the space 34 in the circumferential direction. The air 10 flowing through the space 34 inside the circumferential duct 32 is introduced into the sedimentation tank 2 through the lower opening of the circumferential duct 32 . Thus, the circumferential duct 32 functions as a gas introduction member for introducing the air 10 as cooling gas into the deposition tank 2 . Note that the cooling gas (cooling gas) is not limited to air.

Here, as shown in FIG. 3, of the sintered ore 11 flowing downward from above inside the sedimentation tank 2, the flow speed of the sintered ore 11 along both side surfaces 321 and 322 of the circumferential duct 32 is , the flow 110 on the side far from the end 326 , i.e., the side of the central portion 327 is faster than the flow 111 on the side closer to the end 326 . That is, since the end portion 326 is supported by the radial duct 31 , the flow 111 near the end portion 326 receives resistance from the radial duct 31 . The flow 111 on the side closer to the end 326 receives greater resistance than the flow 110 on the side farther from the end 326 by the amount of resistance from the radial duct 31, so that the flow speed becomes slower. Therefore, when the same amount of air 10 is supplied toward the sintered ore 11 inside the sedimentation tank 2 regardless of the distance from the radial duct 31 at each part of the circumferential duct 32, the flow rate is high at the center On the part 327 side, the sintered ore 11 is insufficiently cooled, while on the side of the end 326 where the flow velocity is slow, the sintered ore 11 is supercooled. As a result, the temperature of the discharged sintered ore 11 may vary, and the cooling performance may deteriorate.

On the other hand, in the sintered ore cooling device 1 of the present embodiment, as shown in FIG. That is, on the side of the central portion 327 far from the radial duct 31, the lower edges of both side surfaces 321 and 322 are notched upward in a trapezoidal shape. is provided. As a result, a relatively large amount of air 10 is supplied to the flow 110 having a high flow velocity, thereby suppressing insufficient cooling. On the other hand, since a relatively small amount of air 10 is supplied to the flow 111 with a slow flow velocity, supercooling is suppressed. In this way, by compensating for the variation in cooling performance due to the difference in the flow speed of the sintered ore 11, it is possible to suppress the variation in the temperature of the discharged sintered ore 11 and improve the cooling function.

For example, on the side of the inner peripheral wall 21 , the recess 324 is provided in the side surface 321 of the circumferential duct 32 . The upper end is provided upwards. In this way, by varying the vertical position of the upper end of the opening between the parts of the circumferential duct 32, it is possible to easily supply the air 10 from the passage formed by the circumferential duct 32 toward the sintered ore 11. A difference can be provided in the amount of That is, on the side where the upper end of the opening is positioned downward, the distance from the opening (upper end) to the upper end of the sedimentation tank 2 increases, so that the liquid is supplied from the opening into the sedimentation tank 2 and directed upwards. The flow resistance of the air 10 increases. Therefore, the amount of air 10 supplied to the interior of the deposition tank 2 through the opening can be reduced. On the other hand, on the side where the upper end of the opening is positioned upward, the distance from the opening (upper end) to the upper end of the sedimentation tank 2 becomes smaller, so the liquid is supplied from the opening into the sedimentation tank 2 and directed upwards. The flow resistance of the air 10 is reduced. Therefore, the amount of air 10 supplied to the interior of the deposition tank 2 through the opening can be increased. The same applies to the outer peripheral wall 22 side, that is, the side surface 322 .

Note that the circumferential duct 32 may be any gas introduction member, and may be, for example, a louver unit having a plurality of louvers on its side surface. When the louver unit is used as the gas introduction member, the upper end of the opening of the gap between the louvers is provided higher on the side of the louver unit farther from the supported portion than on the side closer to the supported portion. Thereby, a difference can be provided in the amount of air 10 supplied toward the sintered ore 11 from the gap between the parts of the louver unit. However, if the hollow circumferential duct 32 that is open downward is used as the gas introduction member as in this embodiment, the structure of the gas introduction member can be simplified compared to the case of using the louver unit. In addition, it is possible to prevent the sintered ore from entering and clogging the gaps between the louvers, thereby stabilizing the cooling performance.

On the side 321 of the circumferential duct 32 farther from the end 326 , that is, on the side of the central portion 327 , the upper end of the opening is provided higher than the side closer to the end 326 . A hole surrounded by the circumference may be provided on the center portion 327 side, or the lower edge of the side surface 321 on the center portion 327 side may be cut upward. When the lower edge is notched upward, the supply amount of the air 10 can be easily adjusted due to the simple structure of the notched shape. The same is true for the side surface 322 .

Another member supporting the end portion 326 of the circumferential duct 32 is a plurality of radially extending ducts 31 that are arranged inside the deposition tank 2 so as to extend in the radial direction and are connected to the inner peripheral wall 21 and the outer peripheral wall 22 of the deposition tank 2. is. The radial duct 31 is a ventilation duct to which the air 10 is supplied from the outside of the deposition tank 2 , functions as a second gas introduction member, and introduces the air 10 into the deposition tank 2 . The circumferential duct 32 supplies the air 10 supplied from the radial duct 31 toward the sintered ore 11 . Since the radial duct 31 is a ventilation duct in this way, it is possible to easily obtain a configuration for supplying the external air 10 as a cooling gas from the circumferential duct 32 to the sintered ore 11 . Note that the radial duct 31 not only functions as an air supply passage to the circumferential duct 32, but also has a function of supplying air 10 to the inside of the sedimentation tank 2 by itself having an opening on the side surface. may In this case, as with the circumferential duct 32, the radial duct 31 is positioned farther from the end, i. On the far side, the upper edge of the opening in the side surface may be provided upwards. This provides the same advantages as the circumferential duct 32 described above.

The shape of the circumferential duct 32 is arbitrary. For example, the cross-sectional shape of the circumferential duct 32 shown in FIG. 5 may be rectangular. Here, the flow rate of the sintered ore 11 tends to be faster on the side of the outer peripheral wall 22 where the outlet 24 is provided than on the side of the inner peripheral wall 21 where the outlet 24 is not provided. Therefore, as shown in FIG. 5, of the peripheral walls 21 and 22 of the sedimentation tank 2, the upper surface 323, which is the surface of the circumferential duct 32 facing the outer peripheral wall 22 provided with the discharge port 24, faces downward from above. It may be inclined with respect to the vertical direction toward the outer peripheral wall 22 as it progresses. In this case, the flow resistance of the sintered ore 11 increases between the upper surface 323 and the outer peripheral wall 22, so that the flow velocity on the outer peripheral wall 22 side can be reduced. Thereby, non-uniform distribution of the flow velocity of the sintered ore 11 in the radial direction of the sedimentation tank 2 can be suppressed, and the cooling performance can be improved.

Moreover, the position of the circumferential duct 32 in the radial direction of the deposition tank 2 is arbitrary. As shown in FIG. 5 , the centerline 325 of the circumferential duct 32 in the radial direction of the deposition tank 2 may be arranged closer to the outer peripheral wall 22 than the centerline 202 in the radial direction of the deposition tank 2 . In this case, since the distance between the circumferential duct 32 and the inner peripheral wall 21 increases and the distance between the circumferential duct 32 and the outer peripheral wall 22 decreases, the sintered ore 11 on the inner peripheral wall 21 side The flow resistance can be reduced to increase the flow velocity, and the flow resistance of the sintered ore 11 on the side of the outer peripheral wall 22 can be increased to reduce the flow velocity. Thereby, non-uniform distribution of the flow velocity of the sintered ore 11 in the radial direction of the sedimentation tank 2 can be suppressed, and the cooling performance can be improved.

Moreover, the cross-sectional shape of the sedimentation tank 2 is arbitrary, and is not limited to an inverted trapezoid, and may be rectangular or trapezoidal. In other words, the inclination of the peripheral walls 21 and 22 of the deposition tank 2 with respect to the vertical direction can be set arbitrarily. Alternatively, the discharge port 24 may be provided in the inner peripheral wall 21 and the discharge port 24 may not be provided in the outer peripheral wall 22 .

Although the preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field to which the present invention belongs can conceive of various modifications or modifications within the scope of the technical idea described in the claims. It is understood that these also naturally belong to the technical scope of the present invention.

1 sinter cooling device 10 air (cooling gas)
11 sintered ore 2 deposition tank 24 outlet 31 radial duct (other members)
32 circumferential duct (gas introduction member)
321 side 322 side 326 end (supported part)

Claims (4)

A sintered ore cooling device for cooling sintered ore,
The sintered ore from the sintering machine is supplied from the top and deposited, and the cooling gas is supplied from the bottom and passed through the deposited sintered ore to the top, and is cooled by the cooling gas. An annular sedimentation tank for discharging the sintered ore from the lower outlet,
is arranged to extend in the circumferential direction inside the deposition tank, introduces the cooling gas into the interior of the deposition tank, and is farther from the supported portion than the side closer to the supported portion supported by another member on the side, a gas introduction member provided with an upper end of the opening in the side face upward;
comprising
Sinter cooling device. The sintered ore cooling device according to claim 1, wherein the gas introduction member is hollow and opens downward. The sintered ore cooling device according to claim 2, wherein the side surface of the gas introduction member has a shape in which a lower edge on a side far from the supported portion is notched upward. A plurality of the other members are arranged to extend radially inside the sedimentation tank, are connected to at least one of an inner peripheral wall and an outer peripheral wall of the sedimentation tank, and introduce the cooling gas into the sedimentation tank. The sintered ore cooling device according to any one of claims 1 to 3, which is a second gas introduction member.

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