The present invention relates to a sintered ore production facility, to a more particularly to a sintered ore produced, which can be circulated efficiently by the exhaust gas improves the quality and productivity of the sintered ore plants.
BACKGROUND
[2]
Sintered ore produced by the process of sintering the fine iron ores to produce a size suitable for blast furnace use. In general, sintered ore production process iron ore, a binder, additives such as a pseudo-particle formation by a sintering raw mix blended in a drum mixer together with water is charged to a predetermined height in the sintering balance. Then, the upper surface portion, and ignition by a spark, the suction by the large suction (吸引) pan balance during sintering progresses, to produce a sintered ore by the sintering combustion blended material from top to bottom.
[3]
On the other hand, the sintered ore blast furnace demand increases due to internal volume expansion and gochul scholar operation, and thereby be increased suction air amount by the image area and the expansion, the expansion of the area-based sintered ores in order to increase production. Although a method of a method of increasing the suction capacity of the suction fan air volume increases, there is a problem that with this increased investment, maintenance and required capacity of the exhaust gas cleaning plant. This is by circulating the exhaust gas generated in the sintering machine is used and how to ensure the flow rate according to an image lacking area expansion.
[4]
A method of circulating the exhaust gas sintering groups has been achieved by fitting a hood to at least a portion of the upper-based sintered, and supplying the exhaust gas discharged through the windbox in hood. In this case, the hood is installed a plurality of inlet pipes to the circulation pipe for the exhaust gas is moved in order to uniformly supply the exhaust gas over a hood around the area, since provided so as to extend in the upper direction of movement of the sintered balance in the group sinter the exhaust gas in the hood supplies. However phenomenon that because the flow direction and the inlet pipe of the exhaust gas varies the flow direction of the exhaust gas without an off-gas into a plurality of inlet pipes are not uniformly distributed, a large amount of exhaust gas flowing into the inlet pipe is connected to the end of the circulation pipe in the circulation pipe this will occur. Thus there is a problem that reducing the flow rate of the exhaust gas and the overall sintering productivity is reduced by the exhaust gas leakage around supplied to the sintering of the circular inlet pipe connected to the ends of the pipe. Further, due to the hazards to those contained in the exhaust gas is also a problem that the environment is polluted.
Detailed Description of the Invention
SUMMARY
[5]
The present invention is to efficiently circulate the exhaust gas to provide sintered ore production equipment that can improve the quality and productivity of sintered ore.
[6]
The present invention provides a sintered ore production facility capable of suppressing the leakage of the exhaust gas inhibit environmental contamination.
Problem solving means
[7]
Sintered ore production facility according to an embodiment of the present invention, a movable sintering balance along the movement route; A lower portion of the sintering a plurality of balance wind box disposed along said travel path; On top of the sintered balance hood extending along at least a portion of the travel path; And the exhaust gas circulation line to at least a connecting portion with the hood of the plurality of wind box; the off-gas circulation, comprising a pipe including at least one off-gas distribution section for distributing the exhaust gas in the moving direction of the flue gas to at least a portion can do.
[8]
The exhaust gas circulation pipe, one end is connected to the wind box main pipe including the exhaust gas distribution period; One side is connected to the main pipe, the other end a plurality of inlet pipe connected to said hood; may contain.
[9]
Is provided with a suction fan in the main pipe, the exhaust gas distribution portion may be provided between the suction fan and the hood.
[10]
The flue-gas distribution section may include a plurality of distribution pipes are arranged side-by-side with the movement of the off-gas direction.
[11]
Each of the plurality of dispensing pipes can be formed to have the same cross-sectional area.
[12]
One side of the inlet pipe is connected to the distribution pipe, the other side of the inlet pipe connected to said hood, said inlet piping may be provided by the number corresponding to the number of the distribution pipe.
[13]
One side of the inlet pipe is connected to the distribution pipe, the other side of said inlet pipe is connected to the hood, is branched into a plurality of other side of the inlet pipe may be connected to the hood.
[14]
The flue-gas distribution section may include a partition wall for partitioning the internal space of the main pipe so as to form a plurality of paths in the direction of movement and parallel to the direction of the exhaust gas.
[15]
The partition may divide the inner space of the main pipe of the plurality of paths to have the same cross-sectional area.
[16]
One side of the inlet pipe is coupled to the path, and the other side of the inlet pipe connected to said hood, it said inlet piping may be provided by the number corresponding to the number of the route.
[17]
One side of the inlet pipe is coupled to the path, and the other side of the inlet pipe connected to the hood, the other side of the inlet pipe may be branched into a plurality of connected to the hood.
[18]
The inlet pipe is connected to one side of the hood, the other side of the plurality of the lead pipe may be provided with the same height.
[19]
The inlet pipe may be provided with a first guide member to the inside of the inlet pipe to control the flow of the exhaust gas therein.
[20]
The hood may include at least one of the at least one second guide member for controlling the flow of exhaust gas from the interior of the hood, blocking member for blocking the leakage of the exhaust gas.
[21]
The off-gas circulation pipe is connected to the hood to supply the exhaust gas in a direction intersecting with respect to the moving direction of the sintered balance, and the second guide member is in a direction crossing to the direction in which the exhaust gas is supplied to the inside of the hood It can be placed.
[22]
The second guide member is in the at least one side of the hood can be provided so as to extend in the longitudinal direction of the hood.
[23]
The second guide member is inclined downward to the inside of the hood may include an inclined surface.
[24]
The blocking member can be with respect to the direction of movement of the plate is formed in a shape having an area, the sintered balance be provided so as to extend on both sides facing each other of the hood in the vertical direction.
[25]
The blocking members may have to be, it rotated in the direction of movement of the balance sintering.
[26]
It may include a valve for opening and closing the auxiliary pipe to the internal pressure of the hood and measured in the pressure gauge to measure the internal pressure of the hood, the secondary pipe and the pressure gauge for connecting the hood and the wind box.
Effects of the Invention
[27]
According to the invention, a plurality of exhaust gas to the inlet piping for supplying the exhaust gas to the hood exhaust gas circulating sintering process can be supplied uniformly. The flow rate due to differences in the exhaust gas to be supplied to the plurality of inlet pipes can be prevented a phenomenon that the exhaust gas from leaking to the outside.
[28]
In addition, it is possible to suppress or prevent the leakage of the exhaust gas from the exhaust gas circulating sintering process. That is, it is possible to minimize a gap occurring between the movable hood and the balance sintering to suppress the leakage of the exhaust gas that may occur around the hood.
[29]
Thus, by suppressing the leakage of the exhaust gas or prevention, and can improve the circulation rate of the exhaust gas to improve the productivity, sintering, it is possible to reduce the environmental pollution due to harmful substances contained in exhaust gas.
Brief Description of the Drawings
[30]
1 is a view schematically illustrating a sintered ore production equipment in an embodiment of the present invention.
[31]
Figure 2 is a diagram showing the configuration sintered ore exhaust gas circulation portion in the manufacturing equipment shown in Fig.
[32]
3 is a view showing the connection structure of the exhaust gas circulation pipe shown in Fig.
[33]
4 is a view showing various structures of the exhaust gas circulation pipe.
[34]
5 is a view showing various example in which the guide member in the exhaust gas circulation pipe.
[35]
6 is a view showing a structure of an exhaust gas circulation area in the embodiment;
[36]
7 is a view showing a sectional structure of the hood along line AA in Fig.
[37]
8 is a view showing the front (or back) the structure of the hood shown in FIG.
[38]
9 is a view showing the arrangement of the shut-off member according to the raw material in the sintering bed height change balance.
[39]
10 is a view schematically showing the sintered ore production equipment according to a modified example of the present invention.
[40]
11 is a view showing the hood in close when producing a sintered ore compared to the degree of leakage of the exhaust gas.
Mode for the Invention
[41]
Hereinafter, description will be given of an embodiment of the present invention; However, the present invention is not limited to the embodiments set forth herein will be embodied in many different forms, but the embodiments are the scope of the invention to those skilled in the art, and the teachings of the present invention to complete It will be provided to fully inform.
[42]
[43]
1 is a view showing a sintered ore production equipment in an embodiment of the present invention.
[44]
1, the sintered ore production facilities, are arranged in one direction are formed so as to be movable with the plurality of sintering the balance 200 which is a space that can be heat-treated blended material inside provided, sintering the balance 200, the caterpillar and movement path (120) to form a closed loop so as to rotate in a manner, to draw the air into the lower direction of the ignition for injecting a flame in the blended raw material charged into a sintering balance 200, 130, and sintering the balance 200 It may include a plurality of the windbox 121 is arranged along the travel path 120 in the lower portion of the sintering truck 200 so as to sinter the raw material formulation. Also, sintered ore production equipment is sintered balance 200, the upper part of the movement route 120, at least the hood (310) extending along a portion, a plurality of wind boxes of the at least off-gas circulation connecting part and the hood 310 of the may include an exhaust gas circulation unit 300 includes a pipe 320. At this time, at least a portion of the exhaust gas circulation pipe 320 has an exhaust gas can be provided with a flue-gas distribution zone (D) for distributing the exhaust gas go to form a plurality of paths. In the drawing, but are shown as being provided in the portion where the flue-gas distribution zone (D) connected to the inlet pipe 326 for supplying exhaust gas to the hood 310, the exhaust gas distribution zone (D) is at least in the off-gas circulation pipe 320 one, that may be provided in plurality.
[45]
Travel path 120 is sintered bogie 200 is to form a closed loop so as to rotate in the caterpillar manner, and the upper-side travel path is charged with the sintering of the starting materials, empty sintering balance sintering the light distribution of the completed sintered ore 200 for the sintering process may include a bottom side of the movement route to move to the upper-side travel path. The upper side moving path may be provided with a raw material supply section for charging a raw material for sintering the balance 200, the lighting period and the sintering zone, the lower-side travel path is Recurrence section in which the sintering truck 200 moves to the next sintering step one can. In this case, the interval is switched from the upper side to the lower side of the movement route travel path may be a fold portion 126 is sintered is sintered ore the light distribution has been completed. One side of the fold portion 126 may be provided with a cooling device (not shown) for a crushing device (not shown) to break the sintered ore that the light distribution in the sintered balance 200, a cooling of the crushed sintered ore.
[46]
Raw material supply to the moving direction of the moving path 120, one upper part can be provided with a material feed portion (110) for charging the blended raw material in sintered balance 200, a lighting unit 130 of the sintered balance 200 ( 110) may be provided at the front. Further, the lower portion of the upper-side travel path has a plurality of wind box 121 may be adapted to suck the inside of the sintered balance to sintering zone in the lower portion of the ignition intervals. Wind box 121 may be formed by a negative pressure by sucking the inside of the sintered balance 200 to form a flow of air directed from the inner sinter the balance 200 to the lower portion from the upper portion of the raw material layer to sinter the raw material.
[47]
End of the wind box 121 is provided with a duct (122) connected, inside the end of the duct 122 has a first suction fan sintered balance 200 by 124 to form a negative pressure therein is installed windbox 121 a must to be sucked. Further, the duct 122 has a first suction fan there is a dust collector (123) in front of the 124 installed filtered impurities from the portion of the suction-gas through a wind box 121 to exhaust through the chimney 125 can. Wind box 121 is to draw the outside air to enable combustion of the ignition and sintering the raw material of the surface layer and the raw materials for sinter to produce a sintered ore.
[48]
And the exhaust gas circulation unit 300 includes a hood 310 which is provided on the upper portion of the sintering balance 200 at least a portion of the moving path 120, one end is connected with at least a portion of the plurality of the windbox 121, the other end hood a second suction fan (328) for transferring is connected to the exhaust gas circulation pipe 320 and the exhaust gas circulation pipe 320 is connected to 310, the exhaust gas discharged via the wind box 121 to the hood 310 can do. At this time, one side of the exhaust gas circulation pipe 320, there may be provided a chamber (not shown) for collecting exhaust gas discharged from the windbox 121.
[49]
Off-gas circulation unit 300 may serve to at least a portion of the exhaust gas in the process of sintering the raw material compounding cycle for reuse for the production of sintered ores. Off-gas circulation unit 300 may be provided so as to circulate to collect exhaust gas generated in the various areas to be sintered ore is produced. For example, the exhaust gas circulation unit 300 may be provided so as to circulate in such a cooling device for cooling the sintering section or sintered ore according to the temperature of the exhaust gas components (oxygen, etc.).
[50]
[51]
Figure 2 is a view showing the connection structure of the exhaust gas circulation pipe are illustrated in the sintered ore is a view showing a configuration exhaust gas circulation portion in the manufacturing equipment, Fig 3 is shown in Figure 1, Figure 4 is a variety of structures of the exhaust gas circulation pipe a view showing, Fig. 5 is a view showing various example in which the guide member in the exhaust gas circulation pipe.
[52]
2 and 3, the exhaust gas circulation pipe 320 has one side coupled to the main pipe 322 and one side of the main pipe 322 that is at least connected to a part of the plurality of wind box 121 to the hood other side It may comprise a connection inlet pipe 326 that is.
[53]
The main pipe 322 is a pipe for at least some of the plurality of the windbox 121 such as to collect the off-gas discharged from the four wind box 121 is circulated into the hood 310. And inlet pipe 326 is a pipe for supplying a part of the exhaust gas traveling along the main pipe 322 in the hood 310. The main pipe 322 may have a significantly larger cross-sectional area than the cross-sectional area of ​​the inlet pipe 326, the same as the main pipe 322 is the area sum of the cross-sectional area of ​​the inlet pipe 326 which is connected to the main pipe (322) or it may have a similar area. In the drawing it was shown the inlet pipe 326 to be provided with four, the main pipe 322, the first inlet pipe (326a), as close in sequence from the farthest to the second inlet pipe (326b), a third inlet pipe ( referred to 326c) and a fourth inlet pipe (326d).
[54]
At this time, the other side of the inlet pipe 326 may be connected to one side of the hood 310, and thus can be supplied to the exhaust gas in the cross direction to the moving direction of sintering the balance 200. One side of the plurality of inlet pipes 326 each having a different height or the same height may be connected to the main pipe 322, the other side has the same height both on one side can be connected to the hood (310).
[55]
When more than one of the incoming pipe 326 is connected to the main pipe 322 is branched from the hood 310, the largest amount of exhaust gas can be introduced into the first inlet pipe (326a) it is located farthest from the main pipe 322, . In such a case the first peripheral hood inlet pipe 310 (326a) is connected, there may occur a problem in that a large amount of exhaust gas leakage. Further, the first inlet pipe (326a) is deteriorated or deformed by the kinetic energy of the exhaust gas is generated is a fear that the exhaust gas from leaking.
[56]
Therefore, this invention was able to make the exhaust gas is uniformly through a plurality of inlet pipe 326 to move to form a distribution region (D) where the exhaust gas is distributed to the exhaust gas so as to be movable by a plurality of path to at least a portion of the main pipe (322) .
[57]
3, the main pipe 322 is formed of a path which the exhaust gas moves therein, there can be a distribution zone (D) for distributing the exhaust gas so as to be movable at least in some cases, a plurality of exhaust gas paths formed.
[58]
Distribution section (D) is an internal space of the main pipe 322, as shown in (b) of the plurality of may be formed by a distribution pipe (325b), 3 as shown in Figure 3 (a) a it may be formed using a barrier rib (325a) for dividing into a plurality of spaces.
[59]
When forming a distribution zone (D) into a plurality of distribution pipes (325b), the main pipe is connected to a plurality of distribution pipes (325b) having the same cross-sectional area and an inner or inlet pipe 326 of the main pipe 322, 322 You can connect to the other side.
[60]
In addition, the distribution zone (D) the case of forming by using a partition wall (325a), the interior of the main pipe 322, for example, the longitudinal direction of the main pipe 322 to the other inside of the lead pipe main pipe 322 to be 326, the connection or by inserting in the direction of movement and parallel to the direction of exhaust gas it can be divided the internal space of the main pipe 322 into a plurality of spaces.
[61]
Exhaust gas traveling along the main pipe 322. This configuration is divided in a plurality of spaces that are divided by a distribution pipe (325b) or the partition wall (325a) in the distribution zone (D) may be introduced into the inlet pipe 326 .
[62]
Distribution section (D) may be variously configured according to the number of cross-sectional shape and the inlet pipe 326 of the main pipe 322. In the example described below it is described as being dispensed interval (D) is formed by a partition wall (325a).
[63]
Referring to (a) of Figure 4, and the cross-sectional shape of the main pipe 322, a long rectangle in the vertical direction, the main pipe 322 may be connected to the three incoming pipe 326. The In this case, the two partition walls (325a) in the interior of the main pipe 322 from the distribution zone (D) installed to be spaced apart in the vertical direction of the inner space of the main pipe 322 can be divided into three spaces. And can be connected to the three incoming pipe 326, the three spaces each partitioned by a partition wall (325a). At this time, the three inlet pipe 326 can be arranged all the other side, but that side is connected to the main pipe (322) disposed at different heights, connected to the hood 310 at the same height. Here has been described as dispensing section (D) is partitioned into three spaces may be divided into more number according to the number of inlet pipe 326. The
[64]
Referring to Figure 4 (b), and the cross-sectional shape of the main pipe 322, a long rectangle in the vertical direction, the main pipe 322 may be connected to the two incoming pipes 326. The In this case, in the distribution zone (D) by installing a partition wall (325a) in the interior of the main pipe 322 it can divide the inner space of the main pipe 322 into two spaces. And it may be two inlet connected to each of the two spaces separated by a pipe 326 in the partition wall (325a). At this time, the other side of the inlet pipe 326 is branched into two can be connected to the hood (310).
[65]
Referring to FIG. (C) 4, and the cross-sectional shape is a square of the main pipe 322, the main pipe 322 may be connected to four inlet pipe 326. In this case, the main pipe 322, the inner space by placing the two barrier ribs (325a) in a direction crossing each other in the main pipe 322 can be divided into four areas. And it can be connected to each of the four spaces divided by the four inlet pipe 326 in the partition wall (325a). Been described here that in the distribution zone (D) is partitioned into four spaces by the number of the incoming pipe 326 may be divided into more number.
[66]
In this same way as distribution by a distribution pipe (325b) or a plurality of space that a large amount of exhaust gas moves along the main pipe (322) forming the dispensing section (D) of a uniform amount to each of the plurality of inlet pipes 326 It can be controlled so that the exhaust gas flows. Therefore, a plurality of inlet pipes 326, either a large amount of the leakage phenomenon of the deformation and the exhaust gas of the exhaust gas inlet pipe which may occur by being introduced into the inlet pipe in the can be suppressed.
[67]
[68]
Distribution section (D), the exhaust gas is distributed even when a uniform amount to each of the plurality of the incoming pipe 326, the exhaust gas flows, the flow direction of the exhaust gas in the flow direction and the hood 310 of the exhaust gas flowing into the hood 310 from since to the different complex vortex inside the hood 310 it is not formed may form a smooth flow of the exhaust gas toward the sintered balance 200. Thus, by pulling reducing the flow rate of the exhaust gas to form an extended section (W) to increase the cross-sectional area along the moving direction of the flue gas to at least a portion of the pipe 326 can be minimized to the eddy current generated in the hood 310. The
[69]
In addition, the exhaust gas flowing into the inlet pipe 326 is a phenomenon that is eccentric to one side in the inlet pipe 326 due to the orientation characteristics to maintain was moved along the main pipe 322. Within the exhaust gas inlet pipe 326, sintering the balance 200. Therefore, when moving in an eccentric state even be introduced into the hood 310 to maintain an eccentric state in the inner hood 310 because the exhaust gas is not diffused uniformly in the raw material layer or the flow rate of exhaust gas supplied to the sintered layer may be partially different. The inlet pipe (326) inside, can be spread in a more preferably from inlet pipe 326 extended section (W) the first guide member the incoming pipe 326, the exhaust gas by installing the 330 to. Therefore, the exhaust gas is moved by an eccentric is minimized in the inlet pipe 326 and the state can be supplied to the hood 310.
[70]
The first inductive element 330 may act, which convert the moving direction of exhaust gas in the inlet pipe 326 may be provided in the expansion section (W), in inlet pipe 326. A first guide member 330 includes a first plate may have a shape having at least a half area with respect to the cross-sectional area of ​​the first guide member inlet pipe 326 in the regions 330 is installed, the inlet pipe (326) there is at least one in number is disposed in a direction crossing to the moving direction of the flue-gas. A first guide member 330 includes a lead-pipe 326 may be provided at the front in the to traverse the interior 10 through inlet pipe 326 to the binary state inclined so 20˚ so that the exhaust gas can collide, the first induction the front and rear of the member 330 to form a path for the exhaust gas can move. At this time, the may be provided with first inductive element 330 are spaced so that when provided in a plurality, the exhaust gas between the first guide member 330 to move.
[71]
A first guide member 330 is 5 in (a) and (b) may be provided at the front end of the extension section (W) formed in the inlet pipe 326, as shown in, Fig. 5 (c) the rear end of the expansion region (W) as shown in, for example, may be provided in the portion adjacent to the hood 310. At this time, the one after the exhaust gas passes through the first guide member 330, since one guide member 330 is in the case which is provided on the front end of the extension section (W) fast, the flow rate of the exhaust gas flowing into the expansion region (W) It may move to a degree of eccentricity state. However, when the first guide member 330 is provided at the rear end of the extension section (W), the expansion segment of the first guide member 330, since the exhaust gas is reduced the flow rate passing through the expansion zone (W) (W) eccentric phenomenon than that which is provided at the front end can be further efficiently reduced.
[72]
[73]
On the other hand, may be a hood 310 with the sintered balance 200 and a distance to the top of the sintered balance 200 is installed spaced apart because sintering balance 200 is moved along a movement path (120). Some Due to this structural characteristic of the exhaust gas supplied to the hood 310 is liable to leak to the gap formed between the not flowing both within the raw material layer sintered balance 200, a hood 310 and sintering the balance 200 . Therefore, the second guide member 332, and a hood (310) for controlling the flow of exhaust gas to the hood 310 to the present invention, in order to minimize the amount of off-gas from leaking through the sintered balance 200 and the hood 310 It installed a shut-off member (340) for minimizing the gap between the sintered balance 200.
[74]
Figure 6 is the front of the illustrated hood in a view showing the sectional structure of the hood along line AA of a diagram showing a structure of an exhaust gas circulation area in accordance with an embodiment of the invention, Figure 7 is 6, 8, 6 (or rear), a diagram showing the structure, Fig 9 is a sintered balance a view showing the arrangement of the shut-off member in accordance with my material layer height variation, Figure 10 is a view schematically showing the sintered ore production equipment according to a modified example of the invention to be.
[75]
One side and the other side of the front, back, front and rear of the sintered balance 200, the hood 310 means the direction, and disposed in the width direction of the hood 310 from below is provided in the moving direction of sintering balance 200 which means that both sides or both sides toward each other. Further, the longitudinal direction is the width direction of the sintering balance means that the direction of movement of the (200), the hood (310) of the hood (310) means the width direction of the sintering balance 200.
[76]
6 and 7, the hood 310 may be provided so as to cover the upper portion of the sintering balance 200 at least a portion of the movement path (120). Hood 310 may be formed to have a sectional shape of a semicircle shape in the moving direction of sintering the balance 200. The That is, the hood 310 is elongated along the direction of movement of the balance sintering 200, the lower portion is opened, the upper may be formed in a hollow shape having a curved surface in the width direction of the sintering balance 200.
[77]
And there can be connected to the exhaust gas circulation pipe 320 side, for example, one side in the width direction of the sintering balance 200 of the hood 310. The exhaust gas is, while one side of the hood into the space 310 flows in the other direction may be introduced within the material layer or a sintered layer sintered balance 200.
[78]
A second guide member (332) may control the direction of flow of the exhaust gas is provided on the inside in the direction of the hood (310) intersecting with respect to the direction in which the exhaust gas flows inside the hood (310). The second guide member 332 may be provided on both sides of the lower portion of the hood 310. And the longitudinal direction of the hood 310, for example, may be sintered balance 200 is continuously provided along the moving direction, the portion that the exhaust gas flows, for example, may optionally be provided with a portion that the exhaust gas circulation pipe 320 is connected .
[79]
The second guide member 332 is inclined downward toward the inside the hood 310 to the one side and the other side lower portion of the hood 310 can be provided to have a slope. This configuration of the exhaust gas introduced into the hood 310 and while moving along the inner wall of the hood (310) to ride the inclined surface formed on the second guide member 332 flows inward the hood 310, the hood 310, the outer It can be inhibited from leaking.
[80]
This section may be provided with a second guide member 332 has been described as being provided on each side of the hood 310, a direction opposite to the one side of the hood 310, the exhaust gas that flows, i.e., only the other side.
[81]
8 and 9, blocking member 340 includes a front and rear direction crossing to the direction that is provided with a second guide member (332) on both sides, or the hood 310, the exhaust gas to the interior of the hood (310) is provided in parallel with the flowing direction, it is possible to minimize the gaps formed between the hood 310 and sintering the balance 200. Blocking member 340 may be formed in a plate shape having an area, the blocking member 340 may be provided so as to extend in the vertical direction at the lower portion of the front and rear of the hood (310). In addition, the blocking member 340 may be provided so as to be rotatable with respect to the moving direction of sintering the balance 200.
[82]
That is, the front and rear of the hood (310) is so disposed in the straight upper portion of the inside material layer sintered balance 200, sintering the balance (200 compared to the two sides of the hood (310) disposed on the wall immediately above the sintering balance 200 ) it is formed with a larger interval. Further, it is possible to a distance between the hood 310 and the material layer changes according to the height change of the material layer to be charged to the sintering balance 200 based on changes in the operating conditions.
[83]
Therefore, the front and back of the hood 310, which may be formed by forming the blocking member 340 so as to extend in the up-and-down direction, and hold the front and the length of the back of the hood 310 on both sides of the top than the sides of the hood (310) effects can be obtained. At this time, the blocking member 340 may be formed of a length corresponding to the minimum height of the raw material layer formed on at least sinter the balance 200 to minimize the distance between the hood 310 and the raw material layer corresponding to the material layer height variation can. If, for example, so the height of the raw material layer to be charged to the sintering balance 200, as illustrated in (a) of FIG. 9 900㎜ low blocking member 340 may be disposed in a vertical direction. In the case of FIG. 9 (b), the height of the raw material layer to be charged to the sintering balance 200. As shown 1500㎜ so relatively high a may be provided with an inclined block member 340. Therefore by reducing the amount of space between the raw material layer within the hood 310 and the sintered balance 200 or sintered balance 200, it is possible to minimize the gap which is the exhaust gas from leaking.
[84]
In addition, sintering the balance 200 is within the height of the raw material layers, because not always the same in the width direction of the sintering balance 200, if configured to extend the blocking member 340 to the lower portion of the hood 310 is sintered balance 200 It may collide with the inner material layer or a sintered layer. Therefore, it is possible to reduce the impact caused by the collision between the blocking member 340 and the material layer by having a rotatable shut-off member 340 in the moving direction of sintering the balance 200. In addition, the blocking member 340 but may be provided so as to extend in the width direction of the hood 310, in which case the case in part with collision by the height difference of the material layer, the entire shut-off member (340) rotating the hood (310 ) and is the opening between the material layer has a large amount of exhaust gas it may leak. Therefore, it is possible to divide arrangement in the width direction of the blocking member 340, the hood 310 to minimize the leakage of the exhaust gas so as to rotate only by a barrier member which collide with the raw material layer.
[85]
And the blocking member 340, but is installed to be rotatable on the inner side of the hood 310 can be partially overlapped to ensure that the hood (310) limits the rotation range of the blocking member 310. May also, with the blocking member 310 by the air flow of the exhaust gas to be supplied into the hood (310) rotates to prevent the between hood 310 and the material layer opening.
[86]
[87]
On the other hand, the second guide member 332 and block member 340 by a hood 310, the exhaust gas supplied to the inside, but can be inhibited from leaking to the outside, the emergency to the sintering balance 200 stops outside the operating the operating condition may be a positive pressure inside the hood 310 is formed due to decrease the attractive force of the first suction fan 124. In this case, there is a second guide member 332 and the blocking difficult to suppress the leakage of exhaust gas through the member 340. Thus, forcing a portion of the exhaust-gas to be supplied into the hood 310 to the wind box 121, it is possible to suppress or prevent the exhaust gas from leaking into the surrounding hood 310.
[88]
In this case, 10 the like, the hood 310, the hood 310 is installed a pressure gauge 350 for measuring the pressure inside, and by using the secondary pipe 352, a hood 310 and a windbox (121 shown in ) can be connected. In this case, the secondary pipe 352, there may be provided a valve 354 for opening and closing the secondary pipe 352, in accordance with the pressure hood (310) measured at the pressure gauge 350.
[89]
Thus when the by pressure gauge 350 with such a configuration hood 310, the internal pressure measured to be too high, to forcibly discharge the exhaust gas of the inside by opening the valve 354, the hood 310 to the wind box 121 hood ( 310) it is possible to lower the internal pressure. Hood 310 can be minimized in that the exhaust gas decreases, the pressure inside the supply into the hood 310, the leakage between the hood 310 and the sintered balance 200 space. That is, first, even if the low suction state of the first suction fan 124, second suction fan 328 is the off-gas to be supplied into the hood 310, the resistance, because supplying the exhaust gas to the hood 310 to the normal operating the large sintered balance 200 without passing through the material within the layer or the sintered layer, thereby discharging the secondary pipe 352, it is possible to inhibit the exhaust gas from leaking between the hood 310 and sintering the balance 200.
[90]
[91]
11 is a view showing the hood in close when producing a sintered ore compared to the degree of leakage of the exhaust gas.
[92]
Of Figure 11 (a) is a case of directly connecting the inlet pipe to the exhaust gas circulation pipe that is not provided with a dispensing section supplying the exhaust gas to the hood, indicates a CO concentration measured in the vicinity of the hood. At this time, the hood 310, the second guide member 332 and block member 340 has not been installed.
[93]
And 11 (b) is a case of connecting the inlet pipe to the exhaust gas circulating pipe provided with a dispensing section supplying the exhaust gas to the hood, indicates a CO concentration measured in the vicinity of the hood. At this time, the hood 310 is installed a second guide member 332 and the blocking member 340.
[94]
In the case of (a) of FIG. 11 appears, and the CO concentration is high in the region located forward with respect to the direction in which sintering balance. In particular, the opposite direction of the inlet pipe represents a very high CO concentration about 2064ppm. It is the plurality of the incoming pipe is connected directly to the exhaust gas circulation pipe intensively flows into the one of the inlet pipe is not in the exhaust gas is uniformly distributed to the plurality of inlet pipes exhaust gas circulation pipe is the exhaust gas in the opposite direction of the hood exhaust gas flows is because leakage. Further, the exhaust gas flowing into the hood is because leakage between the hood and the balance sintering.
[95]
On the other hand, the CO concentration is measured very low compared to that of (a) 11 over the entire hood case of (b) of Fig. This is because flows of a plurality of the lead pipe after the exhaust gas is distributed in a distribution period of the exhaust gas circulation pipe to the exhaust gas is uniformly supplied over the whole area hood. In addition, because the exhaust gas within the hood by the second guide member and the blocking member provided on the hood was prevented from flowing between the hood and the balance sintering.
[96]
[97]
Although described with reference to the foregoing preferred embodiment and the accompanying drawings of the present invention, the present invention is not only limited to this, and is only limited by the claims below. Thus, those skilled in the art can vary the invention within the without departing from the technical spirit of the claims described below and modified strain range.
Industrial Applicability
[98]
Sintered ore production facility according to an embodiment of the present invention can be effectively circulated by the exhaust gas improves the quality and productivity of sintered ore.

WE Claims

A movable sintering balance along the movement route; A lower portion of the sintering a plurality of balance wind box disposed along said travel path; On top of the sintered balance hood extending along at least a portion of the travel path; And the exhaust gas circulation line to at least a connecting portion with the hood of the plurality of wind box; the off-gas circulation, comprising a pipe including at least one off-gas distribution section for distributing the exhaust gas in the moving direction of the flue gas to at least a portion sintered ore production facility that.
[Claim 2]
The method according to claim 1, wherein the exhaust gas circulation pipe, one end is connected to the wind box main pipe including the exhaust gas distribution period; Sintered ore production equipment, including; one side has a plurality of inlet pipe connected to said main pipe and, the other end connected to the hood.
[Claim 3]
The method according to claim 2, is provided with a suction fan in the main pipe, the exhaust gas distribution interval is sintered ore production equipment provided between the suction fan and the hood.
[Claim 4]
The method according to claim 3, wherein the exhaust gas distribution interval is sintered ore production facility including a plurality of distribution pipes are arranged side-by-side with the movement of the off-gas direction.
[Claim 5]
The method according to claim 4, sintered ore production equipment that form each of the plurality of distribution pipes is to have the same cross-sectional area.
[Claim 6]
The method according to claim 5, one side of the inlet pipe is connected to the distribution pipe, other side of the inlet pipe is connected to the hood, the pulling pipes are sintered ore production facility which is provided by the number corresponding to the number of the distribution pipe.
[Claim 7]
The method according to claim 5, sintered ore production equipment one side of the inlet pipe is connected to the distribution pipe, the other side of said inlet pipe is connected to the hood, is branched into a plurality of other side of the inlet pipe connected to the hood.
[Claim 8]
The method according to claim 3, wherein the exhaust gas distribution interval is sintered ore production equipment comprises a partition wall for partitioning the internal space of the main pipe so as to form a plurality of paths in the direction of movement and parallel to the direction of the exhaust gas.
[Claim 9]
The method according to claim 8, wherein the partition wall is sintered ore production facility for dividing the inner space of the main pipe of the plurality of paths to have the same cross-sectional area.
[Claim 10]
The method according to claim 9, one side of the inlet pipe is coupled to the path, the other side of said inlet pipe is connected to the hood, the pulling pipes are sintered ore production facility which is provided by the number corresponding to the number of the route.
[Claim 11]
The method according to claim 9, one side of the inlet pipe is coupled to the path, the other side of the inlet pipe connected to said hood, sintered ore production equipment other side of the inlet pipe is branched into a plurality of connected to the hood.
[Claim 12]
A method according to any one of claim 2 to claim 11, wherein the inlet pipe is sintered ore production equipment is provided with the other side of the same height being connected to one side of the hood, the plurality of the incoming line.
[Claim 13]
The method according to claim 12, wherein the inlet pipe is sintered ore production equipment having a first guide member to the inside of the inlet pipe to control the flow of the exhaust gas therein.
[Claim 14]
The method according to claim 13, wherein the hood is sintered ore production facility includes at least one of the at least one second guide member for controlling the flow of exhaust gas from the interior of the hood, blocking member for blocking the leakage of the exhaust gas.
[Claim 15]
The method according to claim 14, wherein the exhaust gas circulation pipe is connected to the hood to supply the exhaust gas in a direction intersecting with respect to the moving direction of the sintered balance, and the second guide member is a direction in which the exhaust gas is supplied to the inside of the hood sintered ore production equipment placed in a direction crossing respect.
[Claim 16]
The method according to claim 15, wherein the second guide member is sintered ore production facility that is provided on at least one side of the hood so as to extend in the longitudinal direction of the hood.
[Claim 17]
The method according to claim 16, wherein the second guide member is sintered ore production equipment to the inside of the hood downward sloping include an inclined surface.
[Claim 18]
The method according to claim 17, wherein the blocking member is formed in a plate shape with a surface area, sintered ore production equipment having with respect to the direction of movement of the balance sintering so as to extend in the vertical direction on both sides facing each other of the hood.
[Claim 19]
The method according to claim 18, wherein the blocking member is sintered ore production equipment having to be rotatable in the direction of movement of the balance sintering.
[Claim 20]
The method according to claim 19, sintered ore that includes a valve for opening and closing the sub-pipe in accordance with the internal pressure of the hood measured in the pressure gauge to measure the internal pressure of the hood, the secondary pipe and the pressure gauge to connect the hood with the windbox manufacturing facility.