JP2019536967A - Raw material charging device and charging method - Google Patents

Abstract

The present invention relates to a raw material charging apparatus and a raw material charging method, and a raw material charging apparatus having a charging chute interposed between a raw material supply unit and a storage tank so as to load a raw material into a storage tank. The charging chute includes, at least in part, a movable roll movable in a direction intersecting the width direction of the charging chute. Quality and productivity can be improved. [Selection diagram] Fig. 1

Description

  The present invention relates to a raw material charging device and a raw material charging method, and more particularly, to a raw material charging device and a raw material charging device capable of promptly responding to fluctuations in operation and improving the quality and productivity of sinter. Regarding the charging method.

Generally, in the sinter production process, fine iron ore, auxiliary materials, fuel (coke breeze, anthracite), etc. are put into a drum mixer, mixed and moisture-adjusted, and the sinter compounded material that has been turned into pseudo-particles is obtained. Install in the sintering cart.
Such a sintering compound raw material is charged into a sintering cart using a charging chute constituted by a swash plate, a number of rolls or rods. In the charging chute, among the sintering compound raw materials, particles having a large particle size and a large weight are charged into a lower portion of the sintering truck, and particles having a smaller particle size and a smaller weight are Particle size segregation is performed so as to be charged in the upper stage, and segregation charging is induced so as to improve air permeability during the sintering process to form a raw material layer.

On the other hand, in the production of sinter, if there is a fluctuation in the operation such as a change in the height (layer thickness) of the raw material layer or a change in the water content or the particle size in the sintering compound raw material, the fluctuation in the charging pattern accompanying the fluctuation Is inevitable. For example, in the case where the layer thickness has to be reduced as compared with the normal operation, in the state where the height of the lowermost end of the charging chute is fixed, pressing charging (pressure charging) occurs. It is necessary to lower the height of the lowermost end of the slag or to reduce the gradient of the charging chute to reduce the moving speed of the sintering compound material. In addition, when the sintering compound raw material contains a relatively large amount of water, the fine powder material in the sintering compound material adheres to the charging chute and moves along the charging chute. Since the moving speed is limited, it is necessary to increase the gradient of the charging chute in order to maintain the moving speed of the sintering compound material. In the case where the layer thickness has to be increased more than in the normal operation, the lower end of the charging chute touches the raw material layer and the surface layer is pressed down, so that the air permeability may be reduced during the sintering process. is there.
However, when changing the height and gradient of the charging chute, it is necessary to take into account the relationship with the surrounding equipment, so that there is a problem that it is difficult to quickly respond to operation fluctuations.

An object of the present invention is to provide a raw material charging apparatus and a raw material charging method capable of promptly responding to fluctuations in operations.
It is another object of the present invention to provide a raw material charging apparatus and a raw material charging method capable of improving the permeability of a raw material layer and improving the quality and productivity of a sintered ore.

  A raw material charging device according to an embodiment of the present invention is a raw material charging device including a charging chute interposed between a raw material supply unit and a storage device so as to load a raw material into a storage device. The charging chute is characterized in that at least a part thereof includes a movable roll movable in a direction crossing the width direction of the charging chute.

The charging chute includes a plurality of fixed rolls arranged side by side so as to form a moving path of the raw material, and the movable roll is disposed below the fixed roll from which the raw material is separated into the reservoir. Is better.
The charging chute includes a plate-shaped upper charging chute having an area so as to form a moving path of the raw material, and the movable roll is provided with an upper charging chute for separating the raw material into the storage device. It is preferably provided at the bottom.

The movable roll may be provided at a lowermost end in a direction in which the raw material moves in the charging chute.
It is preferable that at least a part of the movement path is formed to have a linear or curved cross-sectional shape.
At least a part of the moving path may have a cycloidal cross-sectional shape.

It is preferable that an elevating means is provided to move the movable roll.
The elevating means may include any one of a cylinder, a screw shaft, and a hydraulic jack.
It is preferable that a driving means is provided to rotate the movable roll.

It is preferable that the movable roll is movable in a vertical direction.
It is preferable that the movable roll is movable in a vertical direction or a direction orthogonal to a moving direction of the raw material moving along the charging chute.
The movable roll may be capable of moving forward and backward in a direction crossing the width direction of the charging chute.

  A method of charging a raw material according to an embodiment of the present invention is a method of charging a raw material into a reservoir using a charging chute that forms a moving path of the raw material, wherein the raw material is separated from the storage container. Moving a movable roll disposed under the charging chute in a direction intersecting the width direction of the charging chute; and supplying the raw material to the charging chute and charging the storage chute. And performing the process.

In the process of moving the movable roll in a direction intersecting the width direction of the charging chute, at least one of the particle size of the raw material, the water content of the raw material, and the charging amount of the raw material is used. Thus, the movable roll can be moved.
The movable roll may be moved to adjust at least one of a speed and a height at which the raw material leaves the charging chute.

The movable roll can be moved to form a space around the movable roll.
In the process of charging the raw material into the storage device, it is preferable that a part of the raw material is discharged into the space and charged into an upper layer of a raw material layer formed in the storage device.
It is preferable to rotate the movable roll in the process of charging the raw material into the storage.

  ADVANTAGE OF THE INVENTION According to embodiment of this invention, the charging pattern of a sintering compound raw material can be controlled promptly in response to the fluctuation of operating conditions. That is, a movable roll is provided below the charging chute, and the roll is moved based on the fluctuation of operating conditions to control the release angle and speed of the compounding raw material charged into the sintering cart. Can be. Thus, the charging pattern can be quickly controlled on the basis of the fluctuation of the operation, so that the fluctuation of the charging of the raw material layer into the sintering carriage can be suppressed as much as possible. Therefore, in the sintering process, the process efficiency and the productivity can be improved by producing a sintered ore having a certain strength while keeping the air permeability in the raw material layer constant.

The figure which showed roughly the raw material charging apparatus which concerns on embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS The perspective view of the charging chute which comprises the raw material charging apparatus which concerns on embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS Sectional drawing of the charging chute which comprises the raw material charging apparatus which concerns on embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS The perspective view of the charging chute which comprises the raw material charging apparatus which concerns on embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS Sectional drawing of the charging chute which comprises the raw material charging apparatus which concerns on embodiment of this invention. The figure which showed roughly an example of the raising / lowering means for driving a movable roll. The figure which showed roughly the raw material charging apparatus which concerns on the modification of this invention. BRIEF DESCRIPTION OF THE DRAWINGS The perspective view of the charging chute which comprises the raw material charging apparatus which concerns on embodiment of this invention. It is a figure for explaining an example which loads a raw material using a raw material charging device concerning an embodiment of the present invention, and (a) is a height of a compounding raw material charged into a sintering cart with a reference height. (B) shows the relationship between the first angle a and the second angle a0 at that time. It is a figure for explaining an example which loads a raw material using a raw material charging device concerning an embodiment of the present invention, and (a) is a height of a compounding raw material charged into a sintering cart with a reference height. (B) shows the relationship between the first angle a and the second angle a1 at that time. It is a figure for explaining other examples of charging a raw material using a raw material charging device concerning an embodiment of the present invention, and (a) is height of a compounding raw material charged into a sintering cart. (B) shows the relationship between the first angle a and the second angle a0 at that time when the camera is inserted at a position lower than the reference height. It is a figure for explaining other examples of charging a raw material using a raw material charging device concerning an embodiment of the present invention, and (a) is height of a compounding raw material charged into a sintering cart. (B) shows the relationship between the first angle a and the second angle a1 at that time when the camera is inserted at a position lower than the reference height. The figure for demonstrating the other example of charging a raw material using the raw material charging apparatus which concerns on embodiment of this invention. The figure which shows the movement state of the lower charging chute concerning the modification of this invention. The figure which shows the movement state of the lower charging chute concerning the modification of this invention. The figure which shows the movement state of the lower charging chute concerning the modification of this invention. It is a figure which shows the movement state of the lower charging chute concerning the modification of this invention, (a) is a case where the height of the compounding raw material charged into the sintering bogie 200 is reduced, (b) is the sintering bogie 200. The case where the height of the compounding raw material charged into the container is increased is shown.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the invention is not limited in any way to the embodiments disclosed below, but may be embodied in various different forms, which merely complete the disclosure of the invention and are generally It is provided to make those who have the knowledge of the invention fully aware of the scope of the invention.
FIG. 1 is a diagram schematically showing a raw material charging apparatus according to an embodiment of the present invention.

First, a raw material charging apparatus according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the raw material charging apparatus includes a raw material supply unit having a raw material hopper 100 and a drum feeder 120, and a charging chute 130.
The raw material hopper 100 supplies the mixed raw material 1 such as fine iron ore, auxiliary raw material, and fine coke to the drum feeder 120 through the hopper gate 110, and the drum feeder 120 rotates and mixes the mixed raw material 1 supplied inside. And pays it out to the charging chute 130.
The charging chute 130 is interposed between the raw material hopper 1 and the sintering trolley 200, and charges the mixed raw material 1 discharged from the raw material hopper 100 into the sintering trolley 200. The charging chute 130 has a plurality of rolls arranged side by side, and forms a movement path on which the compounding raw material moves. At this time, the charging chute 130 has a movement path formed by a slope or a curved surface having an area. Here, when the charging chute 130 is formed by a curved surface having an area, the cross section of the charging chute 130 may be formed in a cycloid curve shape. With such a configuration, the charging chute 130 is charged with a compounding material having a relatively large particle diameter in the lower portion of the sintering bogie 200 and charged with a compounding material having a relatively small particle diameter in the upper portion. Plays the role of promoting vertical segregation.

When the compounding raw material 1 is charged into the sintering bogie 200 and a raw material layer is formed by using such a raw material charging apparatus, the surface uniformity disposed forward in the moving direction of the sintering bogie 200 is obtained. The surface layer portion of the raw material layer can be flattened in the plate 140. Then, the surface layer is ignited in the ignition furnace 150 provided in front of the surface leveling plate 140, and the sintering carriage 200 moves along the sintering section. The sintered ore can be produced while burning the fuel substance, for example, fine coke in the blending raw material.
The charging chute 130 may include a movable roll 131 that is movable in a direction crossing the width direction of the charging chute 130. At this time, the charging chute 130 has a plurality of rolls juxtaposed to form a moving path of the compounding material, and the movable roll 131 has a lower portion of the charging chute 130, that is, a lower portion where the compounding material is separated. The chute 130 is provided so as to be movable in a direction crossing the width direction of the chute 130, for example, at least one of a vertical direction and a diagonal direction. Here, the diagonal direction may be a direction crossing the moving direction of the raw material, for example, a direction orthogonal to the moving direction of the raw material. That is, the charging chute 130 may be at least a part of the plurality of rolls may be fixed rolls 132 in which the arrangement positions thereof are fixed and the path through which the blended material moves is kept at a fixed angle, and at least a part thereof is The movable roll 131 whose arrangement position is variable may be used. At this time, the fixed roll 132 may be provided from the upper side in the longitudinal direction of the charging chute 130, and the movable roll 131 may be provided from the lower side in the longitudinal direction of the charging chute 130. It may be provided at the lowermost end of the charging chute 130 from which the blending material is separated from the moving path formed by the charging chute 130. Here, it is described that the movable roll 131 is provided at the lowermost end of the charging chute 130, but about 2 to 3 rolls are movable from the lower portion of the charging chute 130 including the roll provided at the lowermost end. Configured as a role.

2 to 5 are a perspective view and a sectional view of a charging chute constituting a raw material charging apparatus according to an embodiment of the present invention. FIG. 6 shows an example of a lifting / lowering unit for driving a movable roll. FIG.
First, as shown in FIGS. 2 and 3, the fixed roll 132 includes a plurality of rolls arranged side by side, and can form a moving path along which the blended raw material moves. At this time, the moving route of the compounding material formed by the fixed roll 132 can form a cycloid curved moving route. The fixed roll 132 is preferably provided rotatably, and can rotate in the moving direction of the compounding raw material and in the opposite direction. This is for controlling the rotation direction based on the charging amount of the compounding raw material, the water content in the compounding raw material, and the particle size of the compounding raw material.
The movable roll 131 is preferably provided at the lowermost end of the charging chute 130, and may be provided so as to be movable in a vertical direction, for example, a vertical direction. At this time, the movable roll 131 may be rotatably provided at a position adjacent to the fixed roll 132 provided at the lowermost end of the fixed roll 132, for example, the first fixed roll 132a. The movable roll 131 moves in the vertical direction based on the operating conditions, for example, the fluctuation of the layer thickness, the particle size of the blended raw material, and the water content in the blended raw material, and the moving distance of the blended raw material discharged to the sintering cart 200 And the speed of movement can be adjusted.

In addition, as shown in FIGS. 4 and 5, the movable roll 131 is often provided at the lowermost end of the charging chute 130, and is arranged in a direction intersecting with the moving direction of the blended raw material, for example, in a direction orthogonal to the moving direction of the compounding material. It may be deployed to be mobile. At this time, the movable roll 131 may be provided so as to move diagonally in a direction that is inclined downward with respect to the direction in which the blended raw material moves. The movable roll 131 may be rotatably provided at a position adjacent to the lowermost roll of the fixed roll 132, for example, the first fixed roll 132a. The movable roll 131 sinters while diagonally moving in a direction perpendicular to the moving direction of the compounded raw material based on the operating conditions, for example, the fluctuation of the layer thickness, the particle size of the compounded raw material, and the water content in the compounded raw material. It is possible to adjust the moving distance and moving speed of the blended raw material discharged to the bogie 200.
As described above, the lifting / lowering means 300 that supports the movable roll 131 so that the movable roll 131 can be moved in the vertical direction or the direction that intersects the moving direction of the compounding raw material, and provides a rotational force that can rotate the movable roll 131 And a driving unit.
Various components such as a cylinder, a screw shaft, and a hydraulic jack can be used as the lifting / lowering means 300. In this embodiment, an example in which a screw shaft is used as the lifting / lowering means 300 will be described.

As shown in FIG. 6, the lifting / lowering means 300 includes a support frame 310 provided on both sides of the movable roll 131 and a connecting member 320 for connecting the movable roll 131 to the support frame 310 so as to be vertically movable. It is good to have. At this time, a connecting member 330 such as a bearing may be interposed between the movable roll 131 and the connecting member 320 in order to rotatably connect the movable roll 131 to the connecting member 320.
The support frame 310 may be arranged in a longitudinal direction of the movable roll 131, for example, in a direction crossing the width direction of the charging chute 130. That is, the movable roll 131 is preferably provided so as to be movable in a vertical direction or a direction intersecting the moving direction of the raw material, and the support frame 310 is provided so as to extend in the moving direction of the movable roll 131. May be. For example, as shown in FIG. 2, when moving the movable roll 131 in the up-down direction, the support frame 310 is provided to extend in the up-down direction. As shown in FIG. 4, when the movable roll 131 is moved in a direction intersecting the moving direction of the raw material, that is, in a diagonal direction, the support frame 310 is moved in the longitudinal direction of the movable roll 131, for example, charging. The chute 130 may be arranged in a direction crossing the width direction, and more specifically, may be arranged so that the lower portion of the support frame 310 is inclined downward in the moving direction of the blended raw material. Thereby, the movable roll 131 can move diagonally while moving up and down in the longitudinal direction of the support frame 310.
A thread may be formed on the outer peripheral surface of the support frame 310. The support frame 310 may be rotatably provided, and the support frame 310 may be provided with a grip 314 so that an operator can rotate the support frame 310 by himself. In the case of the rotation, a separate power unit (not shown) may be connected. In the latter case, a sensor (not shown) for measuring the height of the movable roll 131 and a sensor for measuring the height of the movable roll 131 are provided so that the height of the movable roll 131 can be automatically adjusted by rotating the support frame 310. And a control unit (not shown) for controlling the power unit using the result.

The connection member 320 may be formed in a shape surrounding at least a part of the support frame 310, a thread is formed on an inner peripheral surface thereof, and a thread formed on an outer peripheral surface of the support frame 310 meshes with the connection member 320. Can be. With such a configuration, when the support frame 310 is rotated, the connecting member 320 moves the movable roll 131 up and down while moving along the longitudinal direction of the support frame 310, or intersects with the moving direction of the raw material. Can be moved diagonally.
The connecting member 330 may be interposed between the movable roll 131 and the connecting member 320 so that even if the movable roll 131 rotates, the rotational force is not transmitted to the connecting member 320. As described above, the connection member 330 can use a bearing or the like, and one side connected to the connection member 320 is a fixed side, and the other side connected to the movable roll 131 is a free side.
The driving means preferably includes a driver 350 that applies a rotational force, and a motion transmitting member 340 that transmits the rotational force applied from the driver 350 to the movable roll 131. At this time, the motion transmitting member 340 may be interposed between the movable roll 131 and the connecting member 330, and is constituted by a gear box having various gears.

With this configuration, the raw material charging device can adjust the position, for example, the height of the movable roll 131 without adjusting the position, angle, and height of the charging chute 130, thereby quickly responding to changes in operating conditions. Can be handled. That is, if the height of the movable roll 131 is changed, the angle of the lowermost end of the charging chute 130, which has the greatest effect when charging the compounding material into the sintering bogie 200, can be freely adjusted. It can respond quickly to changes in conditions.
For example, when the movable roll 131 is arranged so as to be movable in the vertical direction, the movable roll 131 initially sets the maximum height of the raw material layer that can be charged into the sintering cart 200, for example, the height corresponding to the layer thickness 1500 mm. Can be height. Here, the initial height means the maximum height when the movable roll 131 is moved in the vertical direction, and the movable roll 131 can only move downward from the initial height. This is because, when the movable roll 131 is raised, the movable roll 131 hinders the transport of the blended raw material, and affects the movement of the blended raw material.
Therefore, when the thickness of the raw material layer charged into the sintering bogie 200 is lower than 1500 mm, for example, the movable roll 131 is moved downward based on the height difference, and By adjusting the height and angle at which the raw material separates from the charging chute 130, it is possible to prevent pressure charging and light charging from occurring in the sintering cart 200. The details will be described later.

When the movable roll 131 is disposed so as to be movable in a direction intersecting with the moving direction of the raw material, the movable roll 131 is usually provided with a raw material layer charged into the sintering bogie 200 when producing the sinter. , For example, a height corresponding to a layer thickness of 1200 mm can be set as the reference height. Here, the reference height means a height corresponding to the height of the raw material layer mainly charged into the sintering bogie 200 in the production of the sinter, and the movable roll 131 is moved by the fixed roll 132. It means a height that can form substantially the same angle as the angle formed by the path. At this time, the movable roll 131 can move up and down above the reference height.
Therefore, when the thickness of the raw material layer charged in the sintering cart 200 is higher or lower than 1200 mm, the movable roll 131 is moved diagonally based on the height difference. By ascending or descending, the height and angle at which the compounding material leaves the charging chute 130 can be adjusted to prevent press charging and light charging in the sintering carriage 200. The details will be described later.
The case where the charging chute is formed by a plurality of rolls has been described above, but the charging chute may include a swash plate having an area.

FIG. 7 is a diagram schematically showing a raw material charging apparatus according to a modification of the present invention, and FIG. 8 is a perspective view of a charging chute constituting the raw material charging apparatus according to the embodiment of the present invention. It is.
As shown in FIG. 7, charging chute 1300 is interposed between raw material hopper 100 and sintering vehicle 200, and charges compounded raw material 1 discharged from raw material hopper 100 to sintering vehicle 200. The loading chute 1300 may include a movable roll that can move in a direction crossing the width direction of the charging chute 1300. At this time, the charging chute 1300 has a plate-shaped upper charging chute 1320 extending in one direction so as to form a movement path for moving the compounding material 1 at an upper portion, and an upper charging chute at a lower portion of the upper charging chute 1320. It may be provided with a lower charging chute 1310, for example, a movable roll, which is provided so as to be movable in a direction intersecting with the width direction of 1320 and is formed in a roll shape. At this time, the upper charging chute 1320 is preferably provided so as to be inclined downward on the sintering bogie 200 side, and the moving path formed in the upper charging chute 1320 has a cross section that is linear or curved. It may be formed to have a cross-sectional shape like a letter. Here, when the movement path of the upper charging chute 1320 has a curved cross-sectional shape, it may be formed in a cycloid curve shape.
Further, the lower charging chute 1310 is disposed below the upper charging chute 1320 along the width direction of the upper charging chute 1320, and is provided so as to be movable in a direction crossing the width direction of the upper charging chute 1320. Good. The lower charging chute 1310 is preferably provided rotatably, and can rotate in the moving direction of the compounding material and in the opposite direction. Thus, the lowering chute 1310 can adjust the release speed and the release angle of the sintering carriage 200 to be charged.

As shown in FIG. 8, the charging chute 1300 includes a plate-shaped upper charging chute 1320 and a roll-shaped lower charging member arranged below the upper charging chute 1320 along the width direction of the upper charging chute 1320. And an incoming chute 1310. At this time, the lower charging chute 1310 may be provided below the upper charging chute 1320 so as to be movable in a direction crossing the width direction of the upper charging chute 1320. In addition, the lower charging chute 1310 may be rotatably provided.
The upper charging chute 1320 forms a substantial movement path through which the raw material supplied from the raw material hopper 100 moves, and the lower charging chute 1310 sinters the mixed raw material 1 moving along the upper charging chute 1320. The angle and the height at which the loading chute 1300 is detached from the carriage 200 can be adjusted. That is, the upper charging chute 1320 has a fixed arrangement position and can maintain the path of the blended material at a fixed angle, and the lower charging chute 1310 is arranged so that its position can be changed. Therefore, immediately before the compounding raw material 1 is charged into the sintering cart 200, the angle and the height at which the compounding material leaves the charging chute 1300 can be adjusted. Here, it is described that the lower loading chute 1310 is formed by one roll, but a plurality of lowering chute 1310 may be provided as needed.

The upper charging chute 1320 forms a movement path through which the blended raw material moves, and can move the blended raw material discharged from the drum feeder 120 so as to keep the state of being classified and discharged.
The lower charging chute 1310 may be provided so as to be movable in a direction crossing the width direction of the upper charging chute 1320. Here, the direction crossing the width direction of the upper charging chute 1320 means at least one of a vertical direction, a diagonal direction, and a horizontal direction.
As described above, the lower charging chute 1310 moves in the direction intersecting with the width direction of the upper charging chute 1320 based on the operating conditions, for example, the fluctuation of the layer thickness, the particle size of the compounded raw material, and the water content in the compounded raw material. By adjusting at least one of the height and the angle at which the material moves and separates from the charging chute 1300, the moving distance and the moving speed of the compounding material discharged to the sintering cart 200 are adjusted to charge the compounding material. The pattern can be controlled.

It is preferable to include lifting / lowering means 300 for supporting the lower loading chute 1310 so as to be able to move the lower loading chute 1310, and driving means for applying a rotational force to the lower loading chute 1310.
The elevating means 300 may be formed in substantially the same structure as the elevating means 300 of the previous embodiment, and the arrangement of the support frame 310 may be changed according to the moving direction of the lower loading chute 1310. That is, the support frame 310 is disposed in any one of the vertical direction, the diagonal direction, and the horizontal direction according to the moving direction of the lower charging chute 1310, and can be used as a moving path of the lower charging chute 1310. It is. When moving the lower charging chute 1310 in the up-down direction, the support frame 310 may be arranged so as to extend in a direction perpendicular to the horizontal plane. When the lower charging chute 1310 is moved in a diagonal direction, that is, in a direction perpendicular to the moving direction of the blended raw material, the support frame 310 may be arranged so that the lower portion is inclined downward. And it is good to arrange | position so that it may incline in the moving direction of a compounding raw material on both sides. When the lower loading chute 1310 is moved in the horizontal direction, the support frame 310 may be provided so as to be arranged in parallel with a horizontal plane or the ground surface.

Hereinafter, a method for charging a compounded raw material into a sintering cart using the raw material charging apparatus according to the present invention will be described.
9 and 10 are diagrams for explaining an example of charging a raw material using the raw material charging apparatus according to the embodiment of the present invention. FIGS. 11 to 13 are diagrams illustrating an embodiment of the present invention. FIG. 14 is a view for explaining another example of charging a raw material using the raw material charging apparatus, and FIGS. 14 to 17 are diagrams illustrating a moving state of a lower charging chute according to a modified example of the present invention. It is.
First, an example in which the movable roll 131 is moved in the vertical direction will be described with reference to FIGS. 9 and 10.

The arrangement relationship between the fixed roll 132 and the movable roll 131 constituting the charging chute 130 will be described.
An imaginary line connecting the centers of the plurality of fixed rolls 132 to each other is referred to as a first line L1, and the first line L1 is formed so as to have the same bending ratio as a moving path formed on the upper portion of the fixed roll 132. obtain. In addition, a line obtained by extending the center of the first fixed roll 132a disposed at the lowermost end of the fixed roll 132 in the horizontal direction is defined as a second line L2. Further, an angle formed by the first line L1 and the second line L2 is a first angle a, and the first angle a is an angle at which the blended material moves on the fixed roll 132. However, when the fixed roll 132 forms a cycloidal curve movement path, the angle at which the blended raw material moves while the blended raw material moves above the fixed roll 132 is variable.
A line connecting the center of the first fixed roll 132a and the center of the movable roll 131 is referred to as a third line L3, and a line extending horizontally from the center of the movable roll 131 is referred to as a fourth line L4. . At this time, the angle formed by the third line L3 and the fourth line L4 is a second angle a0, which is an angle at which the blended material leaves the charging chute 130.
In the present invention, the height and speed at which the blended material is separated from the charging chute 130 are controlled by changing the second angle a0 by moving the movable roll 131 in the vertical direction according to the operating conditions. be able to.

For example, as shown in (a) of FIG. 9 and (b) of FIG. 9, when the compounding raw material is charged at the maximum first height H0 that can be charged into the sintering cart 200, for example, 1500 mm, The movable roll 131 can maintain the initial height. At this time, the first angle a and the second angle a0 are the same or substantially the same.
On the other hand, as shown in FIG. 10A, when the raw material mixture is loaded into the sintering bogie 200 at a height H of 1900 mm, the movable roll 131 can be moved downward. At this time, since the center of the movable roll 131 moves downward, the second angle a1 formed by the third line L3 and the fourth line L4 is, as shown in FIG. Before moving is higher than the second angle a0 formed by the third line L3 and the fourth line L4.

  If the height of the raw material layer formed on the sintering bogie 200 is adjusted to be low, the distance that the compounded raw material separates from the charging chute 130 and moves to the sintering bogie 200 increases, and the acceleration generated by this causes the press-fitting. Entry occurs. Therefore, the distance between the movable roll 131 and the sintering carriage 200 can be reduced by moving the movable roll 131 downward. If the distance between the movable roll 131 and the sintering cart 200 is reduced, the moving distance of the compounded material that has separated from the charging chute 130 is reduced, and the moving speed of the compounded material is reduced by the reduced distance. It is possible to suppress or prevent the pressing acceleration from being generated in the sintering cart 200 due to a decrease in the added acceleration. Note that the angle at which the blended material leaves the charging chute 130, that is, the angle a1 formed by the third line L3 and the fourth line L4 increases, and the movement route of the blended material is changed. When the sintering carriage 200 is inserted into the fixed roll 132 at a reduced speed when moving away from the movable roll 131 without being able to maintain the moving speed of the fixed roll 132, it is possible to prevent the pressure charging from occurring. Can be.

As described above, if the occurrence of press charging in the sintering cart 200 is suppressed or prevented, the air permeability in the raw material layer is ensured, the sintering efficiency can be improved, and the sintering with uniform strength can be achieved. Ore is obtained.
When the movable roll 131 is lowered, the movable roll 131 and the first fixed roll 132a are separated from each other to form a space around the movable roll 131. Thereby, the compounding material having a relatively small particle size, for example, fine powder coke, can be discharged from the space and charged into the upper layer of the material layer in the sintering cart 200. As described above, if the compounded raw material having a small particle diameter is charged into the upper layer of the raw material layer in the sintering bogie 200, the air permeability in the raw material layer is improved and the sintering reaction is smoothly performed. The quality and productivity of the consolidation can be improved.

In Table 1 below, the moving distance of the movable roll 131, that is, the separation distance between the first fixed roll 132a and the movable roll 131 and the mixed raw material The separation angle (second angle) is shown. The contents described in Table 1 are merely one example, and the distance between the first fixed roll 132a and the movable roll 131 and the numerical value of the second angle can be variously changed.

  As is clear from Table 1 above, if the movable roll 131 is moved downward, the distance between the first fixed roll 132a and the movable roll 131 increases as the moving distance of the movable roll 131 increases. I understand. At this time, if the distance between the first fixed roll 132a and the movable roll 131 is too large, the vertical segregation of the raw material layer in the sintering carriage 200 may not be performed smoothly. It is better not to let it. Then, it can be seen that as the moving distance of the movable roll 131 increases, the detachment angle of the compounding material from the movable roll 131 increases. At this time, if the separation angle of the compounding raw material is too large, there is a possibility that the vertical segregation of the raw material layer in the sintering cart 200 may be adversely affected as described above. Therefore, it is preferable that the movable roll 131 is appropriately moved so that the loading pattern of the raw material layer in the sintering carriage 200 and the vertical segregation are smoothly performed.

Further, the rotation direction of the movable roll 131 can be controlled based on the particle size, the water content, and the charged amount of the compounding raw material charged into the sintering cart 200 as the movable roll 131 moves.
For example, when the particle size of the compounding raw material is small, or when the water content is large, the compounding raw material may adhere to the charging chute 130 or its moving speed may decrease due to friction, and light charging may occur. . In this case, it is necessary to rotate the movable roll 131 in the moving direction of the compounding raw material to increase the charging speed of the compounding raw material, that is, the speed at which the charging chute 130 is separated. At this time, the movable roll 131 may be rotated at a speed higher than the moving speed of the compounding material. On the other hand, when the amount of the compounding raw material to be charged into the sintering cart 200 is large, there is a possibility that press charging occurs. In this case, it is necessary to rotate the movable roll 131 in the direction opposite to the direction in which the blended raw material moves, to reduce the charging speed of the blended raw material. At this time, if the rotation speed of the movable roll 131 is too high, there is a risk that vertical segregation will not be formed in the sintering cart 200, and the movable roll 131 may be rotated at a speed lower than the moving speed of the compounding raw material. .

When the compounding raw material is charged into the sintering bogie 200 by such a method, the charging into the sintering bogie 200 can be promptly performed in accordance with the operating conditions without changing the entire structure of the charging chute 130. The pattern can be kept constant. Therefore, even if the operating conditions fluctuate, it is possible to suppress the occurrence of press charging and light charging in the sintering bogie 200 and to maintain the air permeability constant, so that high-quality sintering having uniform strength is achieved. Consolidation can be produced.
Next, an example in which the movable roll 131 is moved in a direction intersecting the moving direction of the raw material will be described with reference to FIGS.
First, an arrangement relationship between the fixed roll 132 and the movable roll 131 that constitute the charging chute 130 will be described with reference to FIGS.

An imaginary line connecting the centers of the plurality of fixed rolls 132 to each other is referred to as a first line L1, and the first line L1 is formed so as to have the same bending ratio as a moving path formed on the upper portion of the fixed roll 132. obtain. In addition, a line obtained by extending the center of the first fixed roll 132a disposed at the lowermost end of the fixed roll 132 in the horizontal direction is defined as a second line L2. Further, an angle formed by the first line L1 and the second line L2 is a first angle a, and the first angle a is an angle at which the compounded raw material moves on the fixed roll 132. However, when the fixed roll 132 forms a cycloidal curve movement path, the angle at which the blended raw material moves while the blended raw material moves above the fixed roll 132 is variable.
Further, a line connecting the center of the first fixed roll 132a and the center of the movable roll 131 is referred to as a third line L3, and a line extending the center of the movable roll 131 in the horizontal direction is referred to as a fourth line L4. At this time, the third line L3 may be a moving path of the compounding raw material when the movable roll 131 is at the reference height, and the angle formed by the third line L3 and the fourth line L4 is Is a second angle a0, which is an angle at which the vehicle departs from the charging chute 130.
Further, when the movable roll 131 is at the reference height, a line extending perpendicular to the third line L3, which is a path along which the blended material moves, is defined as a movement line L0.

In the present invention, by moving the movable roll 131 along the movement line L0 according to the operating conditions, the second angle a0, which is the angle at which the compounded material is separated from the charging chute 130, is changed. The height and speed at which the raw material leaves the charging chute 130 can be controlled.
For example, FIGS. 11 (a) and 11 (b) show that the height of the compounding raw material charged into the sintering cart 200 during the sintering operation, for example, the first height H0 is set to 1200 mm. At this time, the movable roll 131 can maintain the reference height. At this time, the first angle a and the second angle a0 are the same or substantially the same.
On the other hand, as shown in FIG. 12A, when the compounding raw material is charged into the sintering bogie 200 at the second height H1 lower than the first height H0, for example, 900 mm, the movable roll 131 can be moved downward along the movement line L0. At this time, since the center of the movable roll 131 moves downward, the angle a1 formed by the third line L3 ′ and the fourth line L4 moves the movable roll 131 as shown in FIG. Before this, the angle a0 formed by the third line L3 and the fourth line L4 increases.

If the height of the raw material layer formed on the sintering bogie 200 is adjusted to be low, the compounded raw material is separated from the charging chute 130 and travels to the sintering bogie 200 in an increased distance. Occurs. Therefore, the distance between the movable roll 131 and the sintering cart 200 can be reduced by moving the movable roll 131 diagonally below the reference height. If the distance between the movable roll 131 and the sintering cart 200 is reduced, the moving distance of the compounded material that has separated from the charging chute 130 is reduced, and the moving speed of the compounded material is reduced by the reduced distance. It is possible to suppress or prevent the pressing acceleration from being generated in the sintering cart 200 due to a decrease in the added acceleration. In addition, the angle at which the blended material leaves the charging chute 130, that is, the angle a1 formed by the third line L3 'and the fourth line L4 increases, and the movement route of the blended material is changed. When the moving speed of the fixed roll 132 cannot be maintained and the movable roll 131 is detached from the movable roll 131, the speed is reduced and the sintering bogie 200 is charged into the sintering bogie 200 to prevent the pressing charging from occurring. Can be.
As described above, if the occurrence of press charging in the sintering bogie 200 is suppressed or prevented, air permeability in the raw material layer can be ensured, sintering efficiency can be improved, and sintering with uniform strength can be achieved. Ore is obtained.

When the movable roll 131 is moved, the movable roll 131 and the first fixed roll 132a are separated from each other, and a mixed raw material having a relatively small particle size, for example, fine powder coke is discharged between them, and the sintering cart is discharged. It can be charged into the upper layer of the raw material layer in 200. As described above, when the compounded raw material having a small particle size is charged into the upper layer of the raw material layer in the sintering cart 200, the air permeability in the raw material layer is improved, and the sintering reaction is smoothly performed, and the sintering reaction is performed. The quality and productivity of the consolidation can be improved.
Further, as shown in FIG. 13A, when the compounding raw material is charged into the sintering bogie 200 at the third height H2 higher than the first height H0, for example, 1500 mm, the movable roll 131 is used. Can be moved upward along the movement line L0. At this time, the center of the movable roll 131 moves upward, and as shown in FIG. 13B, the angle a1 between the third line L3 ′ and the fourth line L4 moves the movable roll 131. Previously, the angle a0 formed by the third line L3 and the fourth line L4 becomes smaller.
If the height of the raw material layer formed on the sintering truck 200 is increased, the distance that the compounded raw material separates from the charging chute 130 and moves to the sintering truck 200 decreases, and as a result, light charging occurs. Therefore, the distance between movable roll 131 and sintering cart 200 can be increased by moving movable roll 131 diagonally above the reference height. When the distance between the movable roll 131 and the sintering cart 200 increases, the moving distance of the compounded material that has separated from the charging chute 130 increases, and is added to the moving speed of the compounded material by the increased moving distance. It is possible to suppress or prevent the occurrence of light charging in the sintering carriage 200 due to an increase in acceleration.

In Table 2 below, the distance between the first fixed roll 132a and the movable roll 131 and the separation of the blended material from the movable roll 131 according to the moving distance of the movable roll 131, that is, the diagonal moving distance. Angle Indicates a second angle. The contents described in Table 2 are merely one example, and the interval between the first fixed roll 132a and the movable roll 131 and the numerical value of the second angle can be variously changed.

As is clear from Table 2 above, if the movable roll 131 is moved diagonally, the distance between the first fixed roll 132a and the movable roll 131 increases as the moving distance of the movable roll 131 increases. . At this time, if the distance between the first fixed roll 132a and the movable roll 131 is too large, the vertical segregation of the raw material layer in the sintering carriage 200 may not be performed smoothly. It is preferable not to let them.
Further, if the movable roll 131 is moved diagonally upward, the second angle a1, which is the separation angle of the compounded raw material, is reduced. If the movable roll 131 is moved diagonally downward, the separation angle of the compounded raw material is reduced. It can be seen that the second angle a1 increases. In this way, by moving the movable roll 131 diagonally and adjusting the detachment angle of the compounded raw material, the charging pattern into the sintering carriage can be appropriately adjusted based on the fluctuation of the operating conditions.
As the movable roll 131 moves diagonally, the rotation direction of the movable roll 131 can be controlled based on the particle diameter, the water content, and the charged amount of the compounding raw material charged into the sintering cart 200.

For example, when the particle size of the compounded raw material is small or when the water content is large, the compounded raw material may adhere to the charging chute 130 or its moving speed may be reduced due to friction, so that light charging may occur. In this case, it is necessary to rotate the movable roll 131 in the moving direction of the compounding raw material to increase the charging speed of the compounding raw material, that is, the speed at which the charging chute 130 is separated. At this time, the movable roll 131 may be rotated at a speed higher than the moving speed of the compounding raw material. On the other hand, when the amount of the compounding raw material to be charged into the sintering cart 200 is large, there is a possibility that press charging occurs. In this case, it is necessary to rotate the movable roll 131 in a direction opposite to the direction in which the blended raw material moves, to reduce the charging speed of the blended raw material. At this time, if the rotation speed of the movable roll 131 is too high, there is a risk that vertical segregation will not be formed in the sintering cart 200. Therefore, the movable roll 131 may be rotated at a speed lower than the moving speed of the compounding raw material. .
When the compounding raw material is charged into the sintering bogie 200 by such a method, the charging into the sintering bogie 200 can be promptly performed in accordance with the operating conditions without changing the entire structure of the charging chute 130. The pattern can be kept constant. Therefore, even if the operating conditions fluctuate, it is possible to suppress the occurrence of press charging and light charging in the sintering bogie 200 and to maintain the air permeability constant, so that high-quality sintering having uniform strength is achieved. Consolidation can be produced.

Next, a method of charging a blended raw material into a sintering bogie using the raw material charging apparatus according to the modified example of the present invention will be described with reference to FIGS.
First, the arrangement relationship between the upper charging chute 1320 and the lower charging chute 1310 constituting the charging chute 1300 in the initial state before the lower charging chute 1310 is moved will be described with reference to FIG.
A line formed along the upper surface of the upper charging chute 1320 is referred to as a first line L1. At this time, the first line L1 may be formed in the same manner as the movement path formed above the upper charging chute 1320. Also, a line obtained by extending the end of the upper charging chute 1320 adjacent to the lower charging chute 1310 in the horizontal direction is defined as a second line L2. Further, an angle formed by the first line L1 and the second line L2 is a first angle a, and the first angle a is an angle at which the blended raw material moves on the upper charging chute 1320. However, when the upper charging chute 1320 forms a cycloidal curved movement path, the angle at which the compounding material moves while the compounding material moves above the upper charging chute 1320 is variable.
A line connecting the end of the upper charging chute 1320 and the outer peripheral surface of the lower charging chute 1310 is referred to as a third line L3, and the third line L3 contacting the outer peripheral surface of the lower charging chute 1310 is extended in the horizontal direction. The resulting line is referred to as a fourth line L4. The angle formed by the third line L3 and the fourth line L4 is a second angle a0. At this time, the third line L3 indicates the direction in which the blended material leaves the charging chute 130, and the second angle a0 indicates the angle at which the blending material separates from the charging chute 130.
In the present invention, the lower charging chute 1310 is moved in a direction intersecting the width direction of the upper charging chute 1320 in accordance with the operating conditions, so that the second angle, which is the angle at which the blended material is separated from the charging chute 130, is obtained. By changing the angle a0, the height and speed at which the blended material leaves the charging chute 130 can be controlled.

FIG. 15 is an example in which the lower charging chute 1310 is moved in the vertical direction, and shows a state in which the lower charging chute 1310 is moved downward in the initial state shown in FIG. At this time, the lower charging chute 1310 may be lowered vertically or vertically to the ground surface.
For example, when the compounding material is charged at the maximum height that can be charged into the sintering cart, for example, 1200 mm, the lower charging chute 1310 may keep the initial state. At this time, the first angle a and the second angle a0 may be the same or substantially the same.

On the other hand, when the compounding raw material is charged into the sintering cart at a height of 900 mm, the lower charging chute 1310 may be lowered. At this time, the lower charging chute 1310 may be moved along a line extending the center of the lower charging chute 1310 in a direction perpendicular to the horizontal plane, for example, a movement line L0. Therefore, as shown in FIG. 15, the second angle a1 formed by the third line L3 and the fourth line L4 is determined by moving the third line L3 and the fourth line L4 before moving the lower charging chute 1310. It becomes larger than the second angle a0 formed by the line L4.
If the height of the raw material layer formed on the sintering bogie 200 is adjusted to be low, the compounded raw material is separated from the charging chute 130 and travels to the sintering bogie 200 in an increased distance. Will occur. Therefore, the distance between lower charging chute 1310 and sintering bogie 200 can be reduced by moving lower charging chute 1310 downward. If the distance between the lower charging chute 1310 and the sintering bogie 200 is reduced, the moving distance of the compounded raw material separated from the charging chute 130 is reduced, and the moving speed of the compounded raw material is reduced by the reduced moving distance. Can be suppressed or prevented from occurring due to the decrease in the acceleration added to the sintering carriage 200. Note that the angle at which the blended material leaves the charging chute 130, that is, the angle a1 formed by the third line L3 and the fourth line L4 increases, and the movement route of the blended material is changed. When the sintering bogie 200 is inserted into the upper charging chute 1320 at a reduced speed when moving away from the lower charging chute 1310 without being able to maintain the moving speed of the upper charging chute 1320, pressure charging occurs. Can be prevented.

FIG. 16 shows an example in which the lower charging chute 1310 is moved in a direction perpendicular to the moving direction of the blended raw material, that is, in a diagonal direction. Here, similarly to the example in which the lower charging chute 1310 is moved in the vertical direction, the lower charging chute 1310 may be moved downward to adjust the angle and the height at which the compounded material is separated from the charging chute 130. . However, the difference is that the direction in which the lower charging chute 1310 moves is a direction orthogonal to the direction in which the blended raw material moves. At this time, the movement line L0 of the lower charging chute 1310 may be formed by extending the moving direction of the blended raw material between the center of the lower charging chute 1310 and the upper upper charging chute 1320, that is, the first line L1. .
FIG. 17 shows an example in which the lower charging chute 1310 is moved in the horizontal direction. Here, the lower charging chute 1310 is advanced in the longitudinal direction of the lower charging chute 1310, that is, in a direction orthogonal to the width direction of the upper charging chute 1320, while maintaining the height of the lower charging chute 1310 as it is. Or you may make it go backward. At this time, the movement line of the lower charging chute 1310 may be formed by extending the center of the lower charging chute 1310 in the horizontal direction.
When the lower charging chute 1310 is moved backward, as shown in FIG. 17A, the angle at which the blended material leaves the charging chute 130, that is, the second angle a1 can be increased from the initial state. This is applicable when the height of the compounding raw material charged into the sintering cart 200 is reduced, for example, when the height of the compounding raw material is lower than when the lower charging chute 1310 is kept in the initial state.

On the other hand, when the lower charging chute 1310 is moved backward, as shown in FIG. 17B, the angle at which the blended material leaves the charging chute 130, that is, the second angle a1 is smaller than the initial state. obtain. This is because when the height of the compounding raw material charged into the sintering cart 200 is increased, for example, when the water content in the compounding raw material is higher than when the lower charging chute 1310 is kept in the initial state, or This is applicable when the particle size of is small.
As described above, the lower charging chute 1310 is moved based on the change in the operating conditions to adjust the separation angle of the blended raw material, whereby the charging pattern into the sintering bogie is changed based on the fluctuations in the operating conditions. Can be adjusted appropriately.
Although not shown, the rotation direction of the lower charging chute 1310 is controlled based on the particle size, the water content, and the charging amount of the compounding raw material charged into the sintering bogie 200 as the lower charging chute 1310 moves. May be.

For example, when the particle size of the compounding raw material is small, or when the water content is large, the compounding material may adhere to the upper charging chute 1320, or its moving speed may be reduced by friction, so that light charging may occur. . In this case, it is necessary to rotate the lower charging chute 1310 in the moving direction of the compounding raw material to increase the charging speed of the compounding raw material, that is, the speed at which the charging chute 130 is separated. At this time, the lower charging chute 1310 may be rotated at a speed higher than the moving speed of the blended raw material. On the other hand, when the amount of the compounding raw material to be charged into the sintering cart 200 is large, there is a possibility that press charging occurs. In this case, it is necessary to rotate the lower charging chute 1310 in a direction opposite to the direction in which the compounding material moves, to reduce the charging speed of the compounding material. At this time, if the rotation speed of the lower charging chute 1310 is too fast, there is a possibility that vertical segregation is not formed in the sintering bogie 200. Therefore, the lower charging chute 1310 moves at a speed lower than the moving speed of the compounding raw material. It may be rotated.
When the compounding raw material is charged into the sintering bogie 200 by such a method, the charging into the sintering bogie 200 can be promptly performed in accordance with the operating conditions without changing the entire structure of the charging chute 130. The pattern can be kept constant. Therefore, even if the operating conditions fluctuate, it is possible to suppress the occurrence of press charging and light charging in the sintering bogie 200 and to maintain the air permeability constant, so that high-quality sintering having uniform strength is achieved. Consolidation can be produced.

  As described above, specific examples have been described in the section of the detailed description of the present invention, but the present invention can be variously modified within the technical scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the appended claims, and equivalents thereof.

  The raw material charging apparatus and the raw material charging method according to the embodiment of the present invention are characterized in that, in the sintering process, by maintaining a constant permeability in the raw material layer and producing a sintered ore having a constant strength, Efficiency and productivity can be improved.

1: compounding raw material 100: raw material hopper 110: hopper gate 120: drum feeder 130: charging chute 131: movable roll 132: fixed roll 132a: first fixed roll 140: surface leveling plate 150: ignition furnace 200: sintering Cart 300: lifting means 310: support frame 314: gripping part 320: connecting member 330: connecting member 340: motion transmitting member 350: driver 1300: loading chute 1310: lower loading chute 1320: upper loading chute a: 1 angles a0, a1: second angle H: height H0: first height H1: second height H2: third height L0: moving line L1: first line L2: second L3, L3 ′: third line L4: fourth line α: first angle α0, α1: second angle

Claims (18)

An apparatus for charging a raw material including a charging chute interposed between a raw material supply unit and a storage tank so as to load a raw material into a storage tank,
The raw material charging apparatus, characterized in that the charging chute includes, at least in part, a movable roll that is movable in a direction crossing the width direction of the charging chute. The charging chute includes a plurality of fixed rolls juxtaposed to form a moving path of the raw material,
The raw material charging apparatus according to claim 1, wherein the movable roll is provided below the fixed roll from which the raw material is separated into the storage device. The charging chute includes a plate-shaped upper charging chute having an area so as to form a movement path of the raw material,
The raw material charging apparatus according to claim 1, wherein the movable roll is provided below the upper charging chute from which the raw material separates into the reservoir.   The raw material charging apparatus according to any one of claims 1 to 3, wherein the movable roll is provided at a lowermost end in a direction in which the raw material moves in the charging chute.   The raw material charging apparatus according to claim 2, wherein at least a part of the moving path is formed to have a linear or curved cross-sectional shape.   The raw material charging apparatus according to claim 5, wherein at least a part of the moving path has a cycloidal curved cross-sectional shape.   The raw material charging apparatus according to claim 6, further comprising an elevating unit that moves the movable roll. The elevating means,
The raw material charging apparatus according to claim 7, further comprising any one of a cylinder, a screw shaft, and a hydraulic jack.   The raw material charging apparatus according to claim 8, further comprising a driving unit that rotates the movable roll.   The raw material charging device according to claim 9, wherein the movable roll is movable in a vertical direction.   The raw material charging apparatus according to claim 9, wherein the movable roll is movable in a vertical direction or a direction perpendicular to a moving direction of the raw material moving along the charging chute.   The raw material charging apparatus according to claim 9, wherein the movable roll is capable of moving forward and backward in a direction intersecting a width direction of the charging chute. A method of charging a raw material into a reservoir using a charging chute that forms a moving path of the raw material,
A step of moving a movable roll provided at a lower portion of the charging chute in which the raw material separates into the storage device in a direction intersecting a width direction of the charging chute,
Supplying the raw material to the charging chute and charging the reservoir;
A method for charging raw materials, comprising: In the process of moving the movable roll in a direction crossing the width direction of the charging chute,
The method for charging a raw material according to claim 13, wherein the movable roll is moved based on at least one of a particle diameter of the raw material, a water content of the raw material, and a charged amount of the raw material. .   The method for charging a raw material according to claim 14, wherein the movable roll is moved to adjust at least one of a speed and a height at which the raw material leaves the charging chute.   The method according to claim 15, wherein the movable roll is moved to form a space around the movable roll. In the process of charging the raw material into the reservoir,
17. The method for charging a raw material according to claim 16, wherein a part of the raw material is discharged into the space and charged into an upper layer of a raw material layer formed in the reservoir. In the process of charging the raw material into the reservoir,
The method according to claim 17, wherein the movable roll is rotated.

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