KR20020050448A - apparatus for controlling section partition gate height in sinter machine - Google Patents

Abstract

PURPOSE: An apparatus for controlling heights of section partition gates in a sinter machine is provided to stabilize quality of sintered ore and improve sintering productivity by automatically controlling the heights of the section partition gates so that raw materials are always constantly charged in a width direction of a transfer car. CONSTITUTION: In a sinter machine manufacturing sintered ore which is equipped with a drum feeder(16) feeding raw materials, a transfer car(7) in which raw materials are separated into large and small sized materials by an inclined deflector plate(2) and then charged, and an ignition furnace igniting flame on the surface of the raw materials charged into the transfer car, the apparatus for controlling heights of section partition gates in the sinter machine comprises maximum layer thickness detection rods(22a-22e) a plural of which are mounted on the transfer car(7) in a width direction so as to detect a maximum height of a raw material upper layer charged into the transfer car(7) in rear of the deflector plate(2) and control heights of section partition gates corresponding to the maximum layer thickness detection rods(22a-22e) according to detection of the maximum height of the raw material upper layer; and minimum layer thickness detection rods(19a-19e) a plural of which are mounted on the transfer car(7) in a width direction so as to form an air ventilation route as detecting a minimum layer thickness height of the raw material upper layer between the ignition furnace and the front of the deflector plate(2) and control heights of a plural of section partition gates corresponding to the minimum layer thickness detection rods(19a-19e) according to detection of the minimum layer thickness height of the raw material upper layer.

Description

Apparatus for controlling section partition gate height in sinter machine

The present invention relates to a device for controlling the height of the split gate to be installed in the sintering machine, and more particularly, a raw material from the sintering machine to the inside of the bogie to agglomerate the raw material mixed with iron ore powder for sintering, subsidiary materials and powdered coke and anthracite The present invention relates to a split gate height control device for an improved sintering machine to maintain a constant quality of the sintered ore by uniformly controlling the charging state in the width direction of the truck according to various operation conditions during charging.

In general, as shown in FIG. 1, a process of manufacturing a sintered ore using a sintering machine is carried out by inserting a raw material containing a certain amount of powdered iron ore, an auxiliary raw material, and a coke (COKE) as a heat source into a trolley (7) of the sintering machine and then igniting. In the furnace 6, the raw material charged with the high-temperature flame is ignited, and the trolley 7 is circulated in one direction.

In this state, the main air blower (MAIN BLOWER) (11) connected to the gas main duct (GAS MAIN DUCT) 10 and the wind box (WIND BOX) (9) connected to the suction from the top to the bottom to the lower It is a pretreatment process of the raw material which agglomerates a powdered iron ore by melt | dissolution by melting at high temperature, crushes the sintered ore discharged by baking, with the crusher 8, and improves the air permeability inside a furnace and loads it into a blast furnace for easy operation.

That is, when the trolley 7 is started, the drum feeder 16 is controlled in one direction by receiving the start signal of the trolley 7 according to the detection signal value of the post-layer detection rods 3a and 3b. do. At this time, the ore cut out in order to maintain the proper breathability and the level of the charged raw material level (LEVEL) is vertically segregated in the deflector plate (2), charged by the cut off plate (5) The layer thickness of the raw material is determined so that a constant layer thickness and particle size charging are performed in the trolley 7.

The raw material charged in the trolley 7 is ignited at the upper part of the charging raw material while passing through the ignition furnace 6 as the trolley 7 proceeds in one direction, and the combustion is made downward by the suction pressure of the blower 11. At this time, as the coke (COKE) mixed in the raw material charged in the trolley (7) is burned, the contained moisture evaporates and at the same time the sintering reaction proceeds to shrink and gradually agglomerate. When light distribution is completed, when the trolley 7 is inverted and light distribution is completed, it is dropped to a hot crusher 8 arranged at the exit side, crushed to 200 mm or less, and then transferred to a cooler. .

On the other hand, Figure 2 is a side view showing a device for charging the raw material into the trolley, after the raw material iron ore with a SHUTTLE CONVEYOR (12) to the surge hopper (SURGE HOPPER) 13 the raw material is drum feeder (DRUM) A predetermined amount is cut out by the height of the split gate 17 in the main gate 18 by rotating the feeder 16, and the cut out material flows downward through the inclined deflector plate 2, which is a charging facility. By the inclination angle θ (53 ° to 63 °) and the slit bar (SLIT BAR) 5b of the deflector plate 2 so that the opposed iron ore particles are charged in the lower layer and the small particles are charged in the upper layer, respectively. After being guided, it passes through the ignition furnace 6 while being cut by the cut-off plate 5c by a layer of a certain height above the upper light 1b in the trolley 7 and surface-ignited by the flame of the burner 6b. The baking proceeds.

In addition, Figure 3 is a schematic diagram showing the operating state of the split gate of the drum feeder according to the prior art, the raw material in the surge hopper 13 is discharged by the height of the split gate 17 in the main gate 18 drum feeder 16 Rotating down the inclined surface of the deflector plate 2, the vertical segregation is guided through the slit bar 5b and charged over the upper light 1b in the bogie 7, and the main gate 18 The height of the main shaft 18 is rotated up and down about the rotating shaft 18d by the connecting shaft 18d being vertically operated by the main gate motor 18a on the base 18e fixed to the surge hopper 13. While the drive shaft 27b is rotated by the split gate motor 27a while the connected split gate 17 geared thereto is adjusted to a constant height of 100 to 120 mm. Induce the loading of raw materials in the width direction of the bogie 7 The.

Here, since the drum feeder 16 rotational power control is controlled only by the post-layer detection rods 2a and 2b provided on the rear side of the deflector plate 2, the method of charging the conventional raw material as described above is carried out in the above-described bogie. When only the post-layer detection rods 2a and 2b in (7) became normal, monitoring was impossible even if the loading state of the trolley | bogie 7 was unstable.

As a result, adhesion light is formed on the split gate 17 so that the iron ore raw material is unevenly charged in the width direction of the trolley 7 so that a portion of the flame complexed to the coke disappears during the sintering firing process, or an overcharged portion. As a result, a portion in which the air permeability deteriorates during the firing process is generated, thereby lowering the productivity, causing unstable firing to deteriorate the sintering operation, and deteriorate the quality.

Therefore, the present invention has been devised in view of such a conventional problem, and its purpose is to automatically control the height of the split gate so that the raw materials are always constantly loaded in the width direction of the bogie to stabilize the sintered ore quality and to the loading raw material surface. It is an object of the present invention to provide a split gate height control apparatus of a sintering machine capable of improving the sintering productivity by generating a flaw to form a vent.

1 is a schematic view showing a sintering process using a general sintering machine,

2 is a state in which the raw material is charged in the balance of the general sintering machine,

3 is an operation state of the main, split gate in the drum feeder of a typical sintering machine

4 is a perspective view showing a split gate height control apparatus of the sintering machine according to the present invention;

5 is a front view of the division gate height control apparatus of the sintering machine viewed from the rear,

Figure 6 is a front view of the split gate height control device of the sintering machine according to the present invention from the front,

Figure 7 (a) (b) (c) is a detailed view showing the assembly structure of the potensen meta, the maximum, minimum layer post-detection rods employed in the split gate height control apparatus of the sintering machine according to the present invention,

Explanation of symbols on the main parts of the drawings

17a, 17b, 17c, 17d, 17e ... Split gate 2 .... deflector plate

19a, 19b, 19c, 19d, 19e ... Minimum layer post-detection rod 5 .... Cut-off plate

22a, 22b, 22c, 22d, 22e ... maximum layer post-detection rod 7 ....

21,22 .... 1st and 2nd support 24 ... Fixture

As a technical configuration for achieving the above object, the present invention,

In the sintering machine which manufactures a sintered ore by having the drum feeder which ejects raw material, the trolley which raw material is loaded by the inclined deflector plate, and the raw material is loaded, and the ignition furnace which ignites a flame on the loaded raw material surface,

A maximum layer post-detection rod mounted in the width direction of the trolley so as to detect the maximum height of the upper layer of raw material charged into the trolley from the rear of the deflector plate and control the height of the one-to-one corresponding split gate according to the presence or absence of the detection; The minimum layer post detection rod is provided between the furnace and the front of the deflector plate while detecting the minimum layer height of the upper layer of the raw material to form a ventilation path, and a plurality of minimum layer post detection rods mounted in the width direction of the bogie to control the height of a plurality of partition gates corresponding to one-to-one correspondence. By providing a divided gate height control device of the sintering machine characterized in that the configuration.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

Figure 4 is a perspective view showing a split gate height control device of the sintering machine according to the present invention, Figure 5 is a front view of the split gate height control device of the sintering machine according to the present invention, Figure 6 is according to the present invention 7 is a front view of the split gate height control device of the sintering machine, and FIGS. 7A, 7B and 7C show potentene, maximum and minimum layer thicknesses of the split gate height control device of the sintering machine according to the present invention. It is a detailed figure which shows the assembly structure of a detection rod.

The apparatus 100 of the present invention, as shown in Figs. 4 to 7, has a minimum height after the raw material layer charged on the bogie through the deflector plate and the maximum after the raw material layer loaded on the bogie between the deflector plate and the ignition furnace. By detecting the height in the width direction and individually controlling the amount of raw material discharged from the drum feeder according to the presence / absence of detection, the apparatus 100 has the largest post-layer detection rods 22a, 22b, 22c and 22d. 22e and the largest post-layer detection rods 19a, 19b, 19c, 19d, and 19e.

That is, behind the deflector plate 2, the metal of the deflector plate 2 is lowered by the height of the plurality of split gates 17a, 17b, 17c, 17d, and 17e provided in the drum feeder 16. A plurality of maximum layer post-detection rods 22a and 22b to detect the maximum height after the raw material layer charged on the trolley 7 via the portion 5a and the slits bar 5b in the width direction of the trolley 7. ) 22c, 22d, and 22e.

The maximum layer post-detection rods 22a, 22b, 22c, 22d, and 22e have a raw material layer which is excessively charged while maintaining a distance of about 40 mm from the raw material layer to which the detection stage is charged in the cart 7. The first horizontal stage 21 fixedly installed in the width direction of the bogie 7 so that the heights of the corresponding divided gates 17a, 17b, 17c, 17d, 17e can be controlled in one-to-one lowering upon contact with It is installed in).

Accordingly, one of the split gates 17a, 17b, 17c, 17d and 17e is opened while the raw material is charged onto the trolley 7, and is loaded on the trolley 7. When the height of the raw material layer is uneven in the width direction and detected by the detection stage of the one-to-one maximum layer post-detection rod corresponding to one-to-one split gate, the divided gate motor is operated to reduce the amount of raw material discharge from the corresponding divided gate by the detection signal. Lower the corresponding division gate.

In addition, between the front of the deflector plate (2) and the ignition furnace (6) is discharged from the drum feeder (16) and charged on the trolley (7), then the minimum height of the charged raw material determined by the cut-off plate (5) A plurality of minimum layer post-detection rods 19a, 19b, 19c, 19d, and 19e are mounted at regular intervals in the width term of the trolley 7 so as to detect.

The minimum post-layer detection rods 19a, 19b, 19c, 19d, and 19e are inserted into the raw material layer inserted into the trolley 7 to a depth of about 20 mm to form a vent in the longitudinal direction. A second horizontal stand fixed in the width direction of the trolley 7 so that the heights of the split gates 17a, 17b, 17c, 17d, and 17e in which the raw material layer is not detected can be controlled in a one-to-one rise. It is installed perpendicular to 22.

As a result, a large amount of light is attached to one of the divided gates of the split gates 17a, 17b, 17c, 17d, and 17e during the operation of charging the raw material onto the trolley 7, thereby reducing the amount of discharge and reducing the amount. (7) If the height of the raw material layer charged on the phase is not uniform in the width direction and the raw material layer is not detected at the detection stage of the split gate with a small amount of raw material discharge and the one-to-one minimum post-detection rod corresponding to one-to-one, the detection signal generated at this time The division gate motor is operated to increase the amount of raw material discharged from the division gate, thereby raising the division gate.

Here, the maximum and minimum post-layer detection rods 19a, 19b, 19c, 19d, 19e, 22a, 22b, 22c, 22d, and 22e are the first and second horizontal bands 21. The mounting bracket 24 and the bolt member of the insulator are assembled to the 22 to adjust the height of each detection end.

In addition, the driven gears which are geared with the drive gears 37a of the rotating shaft rotated by the rotation driving force of the split gate motor 27a on the rear surfaces of the divided gates 17a, 17b, 17c, 17d, and 17e, respectively. 37b and a potentiometer which detects the rotational distance of the split gate by detecting the rotational speed of the drive gear 37a.

The operation and effects of the present invention having the configuration as described above will be described.

The raw material discharged from the drum feeder 6 is charged onto the trolley 7 which runs in one direction, and when the loaded raw material passes through the ignition furnace 6 together with the trolley 7, the surface is ignited and at the same time, gas is discharged from the bottom. In order to manufacture the sintered ore by sucking the outside air in the main duct 10, first, the height of the main gate 18 installed in the drum feeder 6 to discharge the raw material is adjusted to 170 ~ 190 mm, and then the main gate 18 The heights of the plurality of split gates 17a, 17b, 17c, 17d, and 17e, which are arranged at equal intervals adjacent to and adjacent to each other, are as low as 100 to 120 mm, which is about 70 mm lower than the height of the main gate 18. Set it.

When the sintering machine is started in such a state, the drum feeder 16 is rotated while the rotational amount is controlled by the post-layer detection rods 3a and 3b4 that detects whether the raw material discharged therefrom is discharged, and the raw material in the surge hopper 13 is rotated. Start to drain.

Then, the raw material discharged by the drum feeder 16 flows down through the metal surface 5a and the slit bar 5b of the deflector plate 2 which is inclined at a predetermined angle, and the iron ore particles in the confrontation are loaded in the bogie 7. Particles of the small particles are charged to the upper layer portion of the trolley 7 at the lower layer portion of the.

At this time, in order to maintain an interval of about 40 mm with the upper portion of the raw material which is loaded while having one-to-one correspondence with the division gates 17a, 17b, 17c, 17d, and 17e in the width direction behind the deflector plate 2. When the detection lower ends of the plurality of maximum layer post-detection rods 22a, 22b, 22c, 22d, and 22e provided in the width direction come into contact with the raw material layer, this is the split gate corresponding to the maximum layer post-detection rod in which the detection signal is generated. Is excessively open, and the amount of raw material discharged through this is increased, and when the detection signal of the largest post-layer detection rods 22a, 22b, 22c, 22d, and 22e is generated, In order to allow 5mm to be lowered, the divided gate motor 27a is rotated in the forward direction. Accordingly, the driving gear 37a of the motor 27a is engaged with the gear, and the driven gear 37a mounted on the split gate is moved downward to lower the split gate to reduce the amount of discharge from the drum feeder. It can be done.

In addition, the movement amount of the divided gate is lowered by the potentiometer 37 which detects the rotational speed of the drive gear 37a to detect the movement amount of the divided gate.

After the predetermined time (30 seconds) has elapsed, if the upper layer portion of the raw material ore charged into the trolley 7 continues to contact the maximum post-layer detection rods 22a, 22b, 22c, 22d and 22e. It is preferable to allow the corresponding divided gate to be continuously lowered by 5 mm, and the number of times is allowed only up to 10 times (50 mm) in consideration of the reference height of the divided gate.

On the other hand, the raw material ores charged on the trolley 7 while descending the inclined surface of the deflector plate 2 is moved to the ignition furnace 6 side together with the trolley 7 to a certain height by the cut-off plate 5. Is cut.

In this case, one-to-one correspondence with the plurality of split gates 17a, 17b, 17c, 17d and 17e in the width direction of the trolley 7 between the deflector plate 2 and the firing path 6 is provided. If the raw material is not detected in the detection rod of any one of the plurality of minimum layer post-detection rods 19a, 19b, 19c, 18d, and 19e inserted into the raw material layer with a predetermined depth of 20 mm, It is determined that some of the raw material layers on the trolley 7 cut while passing through the cutoff plate 5 are lower than the reference height. Accordingly, in order to increase the amount of raw material discharged through the split gate corresponding to the minimum layer post-detection rod that does not come into contact with the raw material layer, the divided gate motor 27a is reversed when the signal of the detection layer does not detect the raw material layer. The reverse rotation drive is performed so that the divided gate connected thereto is automatically raised by about 5 mm, and the rising height is detected by the potentiometer 37.

In addition, even after a predetermined time of 30 seconds plus the sintering machine speed, the raw material ore layer charged in the trolley 7 does not come into contact with the minimum post-layer detection rods 19a, 19b, 19c, 19d, and 19e. Otherwise, it is preferable to continuously increase the rising height by 5 mm, and the number of times is allowed only up to 10 times (50 mm) in consideration of the reference height of the split gate.

The minimum layer post-detection rods 19a, 19b, 19c, 19d, and 19e are inserted into the upper layer of the raw material loaded in the bogie 7 with a predetermined depth of 20 mm, so that the raw material layer moves in the longitudinal direction along with the bogie. Scrape the upper part to form a vent to facilitate the inflow of fresh air into the lower part when the upper part is ignited.

According to the present invention having the configuration as described above, the front of the deflector plate to one-to-one correspond to the plurality of layered detection rods for detecting the minimum and maximum height of the raw ore charged in the trolley of the sintering machine during the sintering operation. By installing each in the rear to automatically control the height of the split gate and at the same time to form a vent on the top of the raw material layer, the light is attached to the split gate when loading the raw material, uneven discharging of the raw material caused by the foreign material caught It is possible to maintain the charging balance by eliminating the charge biasing caused by the process, thereby improving the stability of the sintering operation, improving the air permeability of the raw material layer, and remarkably improving the quality of the sintered ore manufactured. The effect which can improve productivity is obtained.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as set forth in the claims below. I would like to clarify that knowledge is easy to know.

Claims (4)

Drum feeder 16 for ejecting the raw material, trolley 7 in which the raw material is charged by the inclined deflector plate 2, and the raw material is charged, and the ignition furnace 6 for igniting the flame on the loaded raw material surface. In the sintering machine to prepare a sintered ore, The maximum height of the upper layer of raw material charged into the trolley 7 is detected behind the deflector plate 2, and the height of the split gates 17a, 17b, 17c, 17d, 17e corresponding to one-to-one is detected. Maximum layer post-detection rods 22a, 22b, 22c, 22d and 22e mounted in the width direction of the trolley 7 so as to be controlled according to the presence or absence thereof, the ignition furnace 6 and the deflector plate 2 The trolley is formed while detecting the minimum post-height height of the upper layer of the raw material between the front and the bogie to control the height of the one-to-one corresponding plural divided gates 17a, 17b, 17c, 17d, and 17e according to the detection or not. (7) A split gate height control apparatus for a sintering machine, comprising: a plurality of minimum layer post-detection rods (19a) (19b) (19c) (19d) (19e) mounted in the width direction of (7). The method of claim 1, The maximum layer post-detection rods 22a, 22b, 22c, 22d, and 22e maintain an interval of about 40 mm from the raw material layer to which the respective detection stages are charged in the trolley 7, and the excessively charged raw material layer First horizontally fixed in the width direction of the trolley 7 so as to generate a detection signal for lowering and operating the heights of the corresponding divided gates 17a, 17b, 17c, 17d, 17e upon contact with Split gate height control device of the sintering machine, characterized in that mounted on the base (21). The method of claim 1, The minimum post-layer detection rods 19a, 19b, 19c, 19d, and 19e are inserted into the raw material layer inserted into the trolley 7 to a depth of about 20 mm so that the raw material layer is not detected. It is mounted perpendicular to the second horizontal stage 22 which is fixed in the width direction of the bogie 7 so that the height of the split gate (17a) (17b) (17c) (17d) (17e) can be controlled to increase the height. Division gate height control device of the sintering machine. The method of claim 1, The driven gears 37b which are geared with the drive gears 37a of the rotating shaft rotated by the rotational driving force of the split gate motor 27a on the rear surfaces of the divided gates 17a, 17b, 17c, 17d, and 17e, respectively. ) And a potentiometer for detecting the shank distance of the corresponding split gates 17a, 17b, 17c, 17d, and 17e by detecting the rotational speed of the drive gear 37a. Split gate height control device of the sintering machine characterized in that.