JP7440715B2 - Charge measuring method, charging method, charge measuring device and charging device - Google Patents

Description

The present invention relates to a charge measuring method, a charging method, a charge measuring device, and a charging device.

In a blast furnace, charges such as raw material iron ore and reducing agent are spread from the top of the furnace and filled into the furnace. For charging, a rotating chute installed at the top of the furnace is used.
The rotating chute is arranged to be inclined downward from the center of the furnace top to the outer circumferential side, and the angle of inclination can be adjusted by an adjustment mechanism. The chute is driven to rotate around a vertical axis passing through the center of the furnace top by a rotating mechanism. The charge scattered from the chute falls in a trajectory according to the inclination and rotation speed of the chute, and is spread over a circular area of a predetermined radius on the raw material surface (the surface of the charge filled in the furnace). accumulate. Therefore, by appropriately controlling the tilt angle and rotation speed of the chute, it is possible to adjust the falling position of the charge on the raw material surface, that is, the radius of arrival, and adjust the height of the raw material surface, smoothing out unevenness, etc. This allows the raw material surface to have a desired shape. Usually, the raw material surface has a conical shape, with the outer circumference being higher and the center being lower.

Conventionally, when dispersing the charge with a chute-type charging device, the falling state of the charge is measured and reflected in chute control so that the charge falls at an appropriate position. ing.
For example, a microwave or millimeter wave beam is formed in a furnace, the charge passing through the beam is detected, the falling trajectory is detected, and the falling position is estimated (Patent Documents 1 and 2). reference).
Furthermore, a three-dimensional scanner is introduced into the furnace and the raw material surface is scanned to measure the distribution and accumulation state of the charges falling on the raw material surface (see Patent Document 3).

Japanese Patent Application Publication No. 3-111504 Japanese Patent Application Publication No. 2015-120964 Japanese Patent Application Publication No. 2019-151886

In the measurement methods of Patent Documents 1 and 2 mentioned above, although the falling position of the charge on the raw material surface can be estimated, the behavior of the charge after falling on the raw material surface cannot be detected. Furthermore, the thickness of the falling charge flow (the flow dimension in the radial direction with respect to the pivot axis of the chute) cannot be measured by detecting the intersection with the beam.
On the other hand, according to the measurement method of Patent Document 3 mentioned above, by measuring the raw material surface after the raw material has been spread, various information regarding the falling position of the charge and the state of the raw material surface can be obtained. However, with the method of Patent Document 3, it is not possible to measure the falling behavior of the charge before it falls.
Further, the method of Patent Document 3 cannot measure the deposition behavior after falling, which has a large effect on the formation of the raw material surface. That is, the charges that have fallen onto the raw material surface may collapse downward in the direction of inclination from the piled up state. However, in the method of Patent Document 3, only the resulting raw material surface is measured, and the dynamic deposition behavior cannot be grasped. For the reasons mentioned above, when a distribution of burden material differs from the originally planned one, the cause is not clear and it is not clear how to correct it to return to the distribution of charge as planned. , repeated trial and error was inevitable.

An object of the present invention is to provide a charge measuring method, a charging method, a charge measuring device, and a charging device that can measure both the falling behavior of the charge and the deposition behavior on the raw material surface.

The charge measuring method of the present invention irradiates a microwave or millimeter wave scanning beam onto the raw material surface of the charge filled in a blast furnace, and determines the position of the charge irradiated with the scanning beam. By detecting, at least one of the falling behavior of the charging material during falling, the shape of the raw material surface, and the accumulation behavior of the charging material on the raw material surface is measured.

In the present invention, the measuring operation is performed in parallel during the charging operation of the charge. Since the scanning beam spreads in a two-dimensional plane, a linear irradiation area is formed on the raw material surface. In the irradiation region, the position of the charge deposited on the surface of the material surface is detected, which allows the surface profile of the material surface along the irradiation region to be measured. The surface profile of the raw material surface indicates the shape of the raw material surface, and by continuously measuring it, it can be used to determine changes over time, that is, how the charge is deposited on the raw material surface, and how the accumulated charge is It is possible to measure the deposition behavior of the charge on the raw material surface, such as the situation of collapse. Furthermore, since the measurement is performed in parallel with the charging operation of the charge, the charge falling toward the raw material surface is detected by the scanning beam, thereby making it possible to measure the falling behavior of the charge. In particular, since the scanning beam spreads in a two-dimensional plane, it is possible to detect the trajectory of the charge falling on the same plane.
Thus, according to the present invention, both the falling behavior of the charge and the deposition behavior on the raw material surface can be measured.
Note that the scanning beam of the present invention may be a beam of light having a predetermined width that can form a linear irradiation area, instead of one in which a linear irradiation area is formed by swinging a single light beam. When the beam is swung, the position of the charge can be detected by the detection timing of the reflected light from the charge. In the case of a wide beam of light, the position of the charge can be detected by using a line sensor in the light receiving section to detect the shadow caused by the charge.

In the method for measuring a charge according to the present invention, it is preferable that radial scanning in which the scanning beam scans the raw material surface in a radial direction is performed continuously.
According to the present invention, the surface profile of the raw material surface can be measured in the radial irradiation region from the center of the raw material surface to the outer periphery. Since the charge sprinkled on the raw material surface is generally point-symmetric, that is, uniform in the circumferential direction, the shape of the raw material surface can be measured from the surface profile in any direction, and the falling trajectory of the charge can also be measured. Furthermore, since the collapse of the charge on the raw material surface generally occurs in the radial direction, the deposition behavior on the raw material surface can be measured by continuously measuring the surface profile in the radial direction.
Thus, in the present invention, the limited area of the scanning beam allows the falling behavior of the charge and the deposition behavior on the raw material surface to be measured more efficiently than scanning the entire surface.
Note that the scanning beam of the present invention may scan not only in the radial direction, which is suitable for detecting a collapse, but also in the diametrical direction and along a line parallel thereto.

In the charge measurement method of the present invention, it is preferable to intermittently perform full-surface scanning in which the raw material surface is scanned while the scanning beam is displaced in a direction intersecting the scanning direction.
In the present invention, by displacing the scanning beam in the cross direction, which is limited to the radial irradiation area described above, it is possible to irradiate a wider range of the raw material surface with the scanning beam, It is also possible to cover almost the entire surface of the raw material. Therefore, measurements are usually carried out efficiently by continuous radial scanning of the irradiated area in the radial direction, and also by performing full-scale scanning at predetermined intervals or at arbitrary times to measure areas outside the radial scanning range. It is possible to obtain accurate measurement results.

The charging method of the present invention is characterized in that a charging device for charging the charge is controlled based on the measurement result by the charge measuring method of the present invention described above.
In such a charging method of the present invention, the measurement results described in the above-mentioned charge measurement method of the present invention are obtained during the charging operation, and therefore adjustments are made during the charging operation based on the measurement results. Therefore, proper charging operation can be performed at all times.

In the charging method of the present invention, it is preferable that the charging device has a rotating chute, and at least one of the inclination angle of the chute and the rotating state of the chute is controlled based on the measurement results.
According to the present invention, it is possible to control the chute during the charging operation based on the measurement results obtained by the above-described charge measurement method of the present invention, and it is possible to always perform the appropriate charging operation.

The charge measuring device of the present invention includes a beam irradiation unit that irradiates a scanning beam of microwave or millimeter waves onto the raw material surface of the charge filled in a blast furnace, and a beam irradiation unit that irradiates a scanning beam of microwave or millimeter waves to the raw material surface of the charge filled in a blast furnace; A charge detection unit that detects the position of an object, and measures at least one of the falling behavior of the charge during falling, the shape of the raw material surface, and the accumulation behavior of the charge on the raw material surface. A behavior measuring section.
With such a charge measuring device of the present invention, it is possible to obtain the effects as explained in the charge measuring method of the present invention described above.

The charging device of the present invention includes the above-described charge measuring device of the present invention, the falling behavior of the charge during falling measured by the charge measuring device , the shape of the raw material surface, and the raw material. The present invention is characterized by comprising a charging control device that controls the charging state of the charge based on at least one of the deposition behavior of the charge on the surface.
With such a charging device of the present invention, the same effects as described in the charging method of the present invention described above can be obtained.

According to the present invention, it is possible to provide a charge measurement method, a charging method, a charge measurement device, and a charging device that can measure both the falling behavior of the charge and the deposition behavior on the raw material surface.

FIG. 1 is a block diagram showing a charging device according to an embodiment of the present invention. FIG. 3 is a plan view showing radial scanning in the embodiment. FIG. 3 is a schematic diagram showing the collapse of the charge on the raw material surface in the embodiment. FIG. 3 is a schematic diagram showing measurement of deposition behavior on a raw material surface in the embodiment. FIG. 3 is a schematic diagram showing measurement of the falling behavior of the charge in the embodiment. FIG. 3 is a plan view showing full-plane scanning in the embodiment. 5 is a time chart showing measurement operations in the embodiment.

An embodiment of the present invention will be described below based on the drawings.
In FIG. 1, a charging device 20 is installed in a blast furnace 10.
The charging device 20 includes a rotating chute 21 installed on the furnace top 11, a rotating drive mechanism 22 for rotating the chute 21, an inclination adjustment mechanism 23 for adjusting the inclination of the chute 21, and a rotating chute 21 for charging the chute 21. A charge supply device 24 for supplying material 31 is provided.

In the charging device 20, the charge 31 supplied from the charge supply device 24 is spread in a circular manner from the rotating chute 21, and the inside of the blast furnace 10 is filled with the charge 33. At this time, when the tilt of the rotating chute 21 is decreased, the charge 32 falls to the center of the raw material surface 34, and when the tilt of the chute 21 is increased, the charge 32 falls to the outer periphery of the raw material surface 34. That is, the radial area of the raw material surface 34 on which the charge 32 lands can be adjusted by controlling the inclination of the chute 21 with the inclination adjustment mechanism 23.

The charging device 20 includes a charging control device 40 in order to control the charging operation of the charge 32 by the chute 21 described above.
The charging control device 40 includes a charging control section 41 that controls the rotation speed of the chute 21 by the rotation drive mechanism 22 and the amount of charge 31 supplied from the charge supply device 24, and a charge control section 41 that controls the rotation speed of the chute 21 by the rotation drive mechanism 22 and the amount of charge 31 supplied from the charge supply device 24, and and an inclination control section 42 that controls the inclination angle of.

The charging control device 40 is configured as part of a control system 12 consisting of a network and a computer system that controls the blast furnace 10.
Furthermore, a charge measuring device 50 is connected to the charging control device 40 for measuring the falling behavior of the charge 32 in the furnace and the deposition behavior on the raw material surface 34 in controlling the inclination of the chute 21. There is.

The charge measurement device 50 has a beam irradiation unit 51 installed in the blast furnace 10, and also includes a scan control unit 52, a charge detection unit 53, and a behavior measurement unit 54 configured in the control system 12.

The beam irradiation unit 51 has a cylindrical case 511 installed so as to penetrate the steel shell of the blast furnace 10, and a mirror 512 is installed at the tip inside the furnace.
The mirror 512 is exposed into the furnace through a downward opening formed in the case 511. A probe 513 capable of emitting and detecting a microwave or millimeter wave beam is installed below the case 511. The beam from the probe 513 is reflected by the mirror 512 and can be irradiated onto the raw material surface 34 .
The beam irradiation unit 51 also has the function of a light receiving unit that detects when the irradiated microwave or millimeter wave beam is reflected by the raw material surface 34 and returns.

The mirror 512 is rotatably supported at the tip of a rod 514 passing through the inside of the case 511. A scanning mechanism 515 is installed at the outer end of the case 511. The mirror 512 is connected to a scanning mechanism 515 via a rod 514, and is rotatable by the scanning mechanism 515 over a predetermined scanning angle range R1 around a rotation axis in a direction crossing the rotation plane.
As the mirror 512 rotates, the microwave or millimeter wave beam reflected by the mirror 512 is spread radially to form a scanning beam 60. By irradiating the raw material surface 34 with the scanning beam 60, a linear irradiation area 61 (see FIG. 2) of a predetermined length is formed on the raw material surface 34, with the radial direction being the scanning direction Ds.

A scanning direction adjustment mechanism 516 that rotates the rod 514 with respect to the case 511 is connected to the rod 514, and by rotating the rod 514 with the scanning direction adjustment mechanism 516, the mirror 512 is also moved to a predetermined traverse around the axis of the rod 514. It is rotatable over an angular range R2.
By rotating the rod 514 of the mirror 512 around the axis, it is possible to displace the irradiation area 61 (see FIG. 2) of the scanning beam 60 formed on the raw material surface 34 in the cross direction, so that one side of the raw material surface 34 It is possible to form parallel irradiation areas 611 to 615 (see FIG. 6) from one side to the other side.

The scan control unit 52 controls the scanning mechanism 515 and the scanning direction adjustment mechanism 516 to perform radial scanning to form a radial irradiation area 61 (see FIG. 2) on the raw material surface 34 and irradiation areas 611 to 615 ( (see FIG. 6), it is possible to perform an entire surface scan in which substantially the entire surface of the raw material surface 34 is scanned.

The charge detection section 53 detects the position of the raw material surface 34 that reflected the scanning beam 60 or the falling charge 32 by inspecting the beam that has been reflected and returned to the beam irradiation section 51 . That is, when the scanning beam 60 is reflected back from the feed surface 34, the surface profile of the feed surface 34 is measured, and when the falling charge 32 intercepts the scanning beam 60 and is reflected, The falling position of the falling charge 32 is measured.

The behavior measurement unit 54 can measure the deposition behavior of the charge 32 on the raw material surface 34 from the change over time in the surface profile of the raw material surface 34 detected by the charge detection unit 53. Further, the falling behavior of the charge 32 can be measured from the change over time in the falling position of the falling charge 32 detected by the charge detection unit 53.

The deposition behavior of the charge 32 on the raw material surface 34 and the falling behavior of the charge 32 measured by the charge measuring device 50 are sent to the charging control device 40, and the swing drive mechanism 22 rotates the chute 21. It is used to control the speed and the amount of charge 31 supplied from the charge supply device 24, and to control the inclination angle of the chute 21 by the inclination adjustment mechanism 23.

In this embodiment, radial scanning is normally performed continuously.
As shown in FIG. 2, in radial scanning, the irradiation area 61 of the scanning beam 60 is set in the radial direction of the raw material surface 34, and the position of the raw material surface 34 is detected by the scanning beam 60 within the range of the irradiation area 61. As a result, the surface profile 341 of the raw material surface 34 is measured. The surface profile 341 is expressed by the relationship between the radial position R and the surface height H of the raw material surface 34.
The charge 32 spread from the chute 21 is deposited in a predetermined radius area of the raw material surface 34 and can be considered uniform in the circumferential direction. Therefore, the entire surface shape of the raw material surface 34 can be grasped from the measurement results of the radial scan.

In FIG. 3, when the charge 32 is spread on the raw material surface 34 (see FIG. 3(A)), the charge 32 forms a large lump 35 (see FIG. 3(B)), and After a period of time, it may collapse and turn into a flat mass 36 (see FIG. 3(C)).
In such a case, it is difficult to measure the change from lump 35 to lump 36 by measuring the surface profile 341 once by the charge detection unit 53.
On the other hand, in the present embodiment, the behavior measurement unit 54 can measure the deposition behavior of the raw material surface 34 based on the change over time of the surface profile 341 detected by the charge detection unit 53.

In FIG. 4, when the charging material 32 is continuously scanned in the radial direction by the scanning beam 60 while dispersing the charging material 32 (see FIG. 4(A)), a lump 35 is formed by the charging material 32 (see FIG. 4(A)). (B)), its surface profile 341 is measured. If this mass 35 collapses into a flat mass 36, it will not match the previously measured surface profile 341. However, since the radial scans are performed continuously, subsequent scans measure the surface profile 341 including the mass 36 (see FIG. 3C).
As a result, an accurate surface profile 341 reflecting the current state can be obtained, and the deposition behavior on the raw material surface 34 can be measured from changes over time.

In FIG. 5, a charge measuring device 50 is capable of measuring the falling locus of a falling charge 32 using a scanning beam 60. The scanning beam 60 is normally reflected from the feed surface 34 as described above, but depending on the orientation of the chute 21 the charge 32 passes through the scanning beam 60. Therefore, the position or falling trajectory of the falling charge 32 can be measured using the scanning beam 60.
In particular, if there is wear or play in the mechanical part of the chute 21 and the measured falling trajectory of the charge 32 deviates from the trajectory in the scanning control unit 52 (see FIG. 5(A)), the deviation may occur. By using the inclination adjustment mechanism 23 to correct the angle θ corresponding to the angle θ, the correct dispersion state (see FIG. 5(B)) can be restored.

In this embodiment, radial scanning is normally performed continuously, and full-surface scanning is performed intermittently.
As shown in FIG. 6, in the entire surface scan, substantially the entire surface of the raw material surface 34 is scanned by displacing the irradiation area 61 for radial scanning in the cross direction. Specifically, a short irradiation area 611 is formed at one end of the raw material surface 34, and this is displaced in the cross direction to increase the length according to the width of the raw material surface 34, like the irradiation region 612. go. When the beam passes through the center of the raw material surface 34 in the irradiation area 613, it is further displaced while shortening the length like the irradiation area 614, and scans to the irradiation area 615 at the opposite end.
Thereby, substantially the entire surface of the raw material surface 34 can be actually scanned, and deviations in the circumferential direction of the raw material surface 34, which could not be detected by radial scanning, can also be measured.

In this embodiment, continuous radial scanning and intermittently full-surface scanning can be performed depending on the operating state of the blast furnace 10.
In FIG. 7, while the blast furnace 10 is in operation, the charging operation C1 is continued in the charging device 20. During this period, the charge measuring device 50 continuously performs the radial scan S11, and also performs the entire surface scans S12 and S13 at predetermined intervals.
If there are any matters that require adjustment in the radial direction scan S11 or the full surface scans S12 and S13, carry out preliminary adjustment P1 in parallel with the charging operation C1, prior to the main adjustment P2 when the blast furnace is shut down. . Thereby, the period of the main adjustment P2 can be shortened, and an extension of the blast furnace suspension period can be avoided.

For example, in the rotating chute 21, the value of the tilting angle may differ from the standard due to the influence of wear, play, etc. Conventionally, when the blast furnace 10 was scheduled to be shut down, the liner wear amount and tilt angle deviation of the chute 21 were measured and adjusted to reference values. Because of the need to make various adjustments, including these adjustments, it was sometimes necessary to extend the wind break period.
In contrast, in this embodiment, by measuring the falling position of the charge 32 during operation using the charge measurement device 50, it is possible to check whether the amount of liner wear or the deviation of the tilt angle exceeds a threshold value. This can be understood and dealt with by preliminary adjustment P1 in FIG. Further, by taking measures such as advancing the timing of the scheduled wind break, it is possible to adjust the charging device 20 at an earlier stage.

When the blast furnace 10 is put into operation again after the blast furnace suspension period, the charging device 20 performs the charging operation C2, and the charge measuring device 50 performs continuous radial scanning S21 and intermittent full-surface scanning S22. , S23 are executed.

According to this embodiment described above, the following effects can be obtained.
In this embodiment, during the charging operation of the charge 32 from the chute 21 (charging operations C1 and C2 in FIG. 7), a measuring operation (radial direction scans S11 and S21 in FIG. 7) is performed in parallel. Since the scanning beam 60 has a two-dimensional spread, a linear irradiation area 61 (see FIG. 2) is formed on the raw material surface 34.
In the irradiation region 61, the position of the charge 33 deposited on the surface of the raw material surface 34 is detected, and thereby the surface profile 341 (see FIG. 2) of the material surface 34 along the irradiation region 61 can be measured. The surface profile 341 of the raw material surface 34 shows the shape of the raw material surface 34, and by continuously measuring it, it can be measured over time, that is, the situation in which the charge 32 is deposited on the raw material surface 34, and the accumulation The deposition behavior of the charge 32 on the raw material surface 34 can be measured, such as the situation in which the charged charge (lump 35, see FIG. 3) collapses.
Furthermore, in order to measure (radial direction scanning S11, S21) in parallel with the charging operation (C1, C2) of the charge 32, the charge 32 falling toward the raw material surface 34 is detected by the scanning beam 60. This allows the falling behavior of the charge 32 to be measured. In particular, since the scanning beam 60 spreads in a two-dimensional plane, it is possible to detect the trajectory of the charge falling on the same plane (see FIG. 5).
In this way, according to this embodiment, both the falling behavior of the charge 32 and the deposition behavior on the raw material surface 34 can be measured.

In this embodiment, radial scans S11 and S21 for scanning the raw material surface 34 in the radial direction are continuously performed in parallel with the charging operations C1 and C2 (see FIG. 7) of the charge 32. As a result, the surface profile 341 of the raw material surface 34 is measured in the radial irradiation area 61 (see FIG. 2) from the center of the raw material surface 34 to the outer periphery, and the falling trajectory of the charge 32 and the charging The deposition behavior of the material 32 on the raw material surface 34 can be measured.
Since the charge 32 scattered on the raw material surface 34 is generally point-symmetric, that is, uniform in the circumferential direction, if the falling behavior of the charge 32 in any direction and the deposition behavior on the raw material surface 34 can be measured, It can be estimated that the same applies to other directions.
Thus, in this embodiment, the scanning beam 60 with a limited range allows the falling behavior of the charge 32 and the deposition behavior on the raw material surface 34 to be measured more efficiently than when scanning the entire surface. .

In this embodiment, while the radial scans S11 and S21 are continuously performed, the entire surface scans S12, S13, S22, and S23 are performed intermittently to scan the raw material surface 34 while displacing the scanning beam 60 in a direction intersecting the scanning direction Ds. Do it on purpose. As a result, by displacing the limited scanning beam 60 to the irradiation area 61 whose scanning direction Ds is the radial direction of the raw material surface 34 described above, by displacing it in the cross direction and scanning the irradiation areas 611 to 615. , the scanning beam 60 can be irradiated over a wider range of the raw material surface 34, and substantially the entire surface of the raw material surface 34 can be covered.
Therefore, normally, measurements are carried out efficiently by continuous radial scans S11 and S21 on the radial irradiation area 61, and full-surface scans S12, S13, S22, and S23 are performed at predetermined intervals or at arbitrary times to perform radial scans S11 and S21. , S21, reliable measurement results can be obtained.

In this embodiment, the charging control device 40 can control the charging operation in the charging device 20 based on the measurement results obtained by the charging material measuring device 50.
In particular, since the measurement results by the charge measuring device 50 are obtained during the charging operation (charging operations C1 and C2, see FIG. 7), it is possible to make adjustments during the charging operation based on the measurement results. This allows for proper charging operation at all times.

In this embodiment, the charging control device 40 controls the tilt of the chute 21 by the tilt adjustment mechanism 23 based on the measurement results obtained by the charge measuring device 50, and controls the tilt of the chute 21 by the swing drive mechanism 22. It is possible to control the turning operation and always perform an appropriate charging operation.

Note that the present invention is not limited to the embodiments described above, and the present invention includes modifications within the scope that can achieve the purpose of the present invention.
In the embodiment, while the radial scans S11 and S21 are continuously performed, the scanning beam 60 is displaced in a direction intersecting the scanning direction Ds, and the entire surface scans S12, S13, S22, which scan substantially the entire surface of the raw material surface 34 are performed. Although S23 is performed intermittently, the frequency, timing, etc. of the entire surface scan S12, etc. may be selected as appropriate.

The entire surface scans S12, S13, S22, and S23 are not limited to continuous two-dimensional measurement of substantially the entire surface of the raw material surface 34 via the irradiation regions 611 to 615 shown in FIG. Scanning along the scanning direction Ds may be performed at each location. In this case, it is not possible to directly measure the raw material surface 34 in the interval between the irradiation areas 611 to 615, but by narrowing the interval, accuracy equivalent to continuous measurement can be ensured, and work efficiency can also be improved.

In the embodiment described above, the beam irradiation unit 51 was used to form the scanning beam 60, but the specific configuration may be changed as appropriate if the irradiation region 61 can be formed on the raw material surface 34 by irradiating microwaves or millimeter waves. It's fine.
Note that millimeter waves are electromagnetic waves with a wavelength of 1 to 10 mm and a frequency of 30 to 300 GHz. There is no clear definition of microwaves, but in the communications field, for example, they are electromagnetic waves with wavelengths of 1 to 10 cm and frequencies of 3 to 30 GHz, and submillimeter waves (wavelengths of 0.1 to 1 mm) and millimeter waves (wavelengths of 1 to 10 mm). This is the shortest wavelength range of radio waves.

INDUSTRIAL APPLICATION This invention can be utilized for a charge measuring method, a charging method, a charge measuring device, and a charging device.

DESCRIPTION OF SYMBOLS 10... Blast furnace, 11... Furnace top, 12... Control system, 20... Charging device, 21... Chute, 22... Turning drive mechanism, 23... Inclination adjustment mechanism, 24... Charge supply device, 31, 32, 33... Charge, 34... Raw material surface, 341... Surface profile, 35... Lump, 36... Lump, 40... Charge control device, 41... Charge control section, 42... Inclination control section, 50... Charge measuring device, 51... Beam irradiation section, 511... Case, 512... Mirror, 513... Probe, 514... Rod, 515... Scanning mechanism, 516... Scanning direction adjustment mechanism, 52... Scanning control section, 53... Charge detection section, 54... Behavior measurement unit, 60...Scanning beam, 61,611,612,613,614,615...Irradiation area, C1, C2...Charging operation, Ds...Scanning direction, P1...Preliminary adjustment, P2...Main adjustment, R...Diameter Direction position, R1...Scanning angle range, R2...Traverse angle range, S11, S21...Radial direction scanning, S12, S13, S22, S23...Full surface scanning.

Claims (7)

By irradiating the raw material surface of the charge filled in the blast furnace with a microwave or millimeter wave scanning beam and detecting the position of the charge irradiated with the scanning beam, the falling load can be detected. Measuring at least one of the falling behavior of the charge, the shape of the raw material surface, and the deposition behavior of the charge on the raw material surface,
Usually, radial scanning in which the scanning beam scans the raw material surface in the radial direction is performed continuously, and full-scale scanning is performed in which the raw material surface is scanned while intermittently displacing the scanning beam in a direction crossing the scanning direction. A charge measuring method characterized by: A charging method comprising controlling a charging device for charging the charge based on a measurement result obtained by the method for measuring the charge according to claim 1. In the charging method according to claim 2 ,
The charging device has a rotating chute,
A charging method comprising controlling at least one of the inclination angle of the chute and the turning state of the chute based on the measurement results. In the charging method according to claim 2 or 3,
performing the continuous radial scanning and the intermittent full-surface scanning during a charging operation;
If there is an item that requires adjustment due to the radial direction scanning or the entire surface scanning, preliminary adjustment is performed in parallel with the charging operation,
A charging method characterized in that the main adjustment of the items requiring adjustment is performed when the blast furnace is shut down. a beam irradiation unit that irradiates a microwave or millimeter wave scanning beam onto the raw material surface of the charge filled in the blast furnace;
a charge detection unit that detects the position of the charge irradiated with the scanning beam;
a behavior measurement unit that measures at least any of the falling behavior of the charge during falling, the shape of the raw material surface, and the deposition behavior of the charge on the raw material surface;
The beam irradiation unit normally performs continuous radial scanning in which the scanning beam scans the raw material surface in a radial direction, and intermittently displaces the scanning beam in a direction crossing the scanning direction while scanning the raw material surface. A charge measuring device characterized by scanning the entire surface. A charge measuring device according to claim 5,
The charging is performed based on at least one of the falling behavior of the charge during falling measured by the charge measurement device, the shape of the raw material surface, and the accumulation behavior of the charge on the raw material surface. A charging device comprising: a charging control device that controls the charging state of objects. In the charging device according to claim 6,
The charging control device includes:
performing the continuous radial scanning and the intermittent full-surface scanning during a charging operation;
If there is an item that requires adjustment due to the radial direction scanning or the entire surface scanning, preliminary adjustment is performed in parallel with the charging operation,
A charging device characterized in that the main adjustment of the items requiring adjustment is performed when the blast furnace is shut down.

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