KR20140001555A - Apparatus for charging sintering material and method for charging sintering material - Google Patents

Abstract

A sintering material charging device according to the present invention includes a charging control member which is configured to uniformly charge pellets containing heat inside a sintering carriage; a temperature measuring member measuring the sintering temperature of a raw material layer which is charged and stacked; and a control unit which is electrically connected each to the charging control member and the temperature measuring member and which controls the charging control member based on the sintering temperature. As described above, the present invention is configured to uniformly charge pallets among sintering materials containing fine particles to the sintering carriage with the charging control member. A delay of sintering completion timing is checked based on the data of the sintering temperature, and the charging control member is calibrated according to the delay of the sintering completion timing so that the sintering completion timing is moved up. Therefore, an overall sintering speed is increased and the productivity is improved. Furthermore, the present invention can improve a quality of pig iron produced by reducing the difference of components of upper and lower layers of the raw material layer staked inside the sintering carriage.

Description

Apparatus for charging sintering material and Method for charging sintering material}

The present invention relates to a sintering raw material charging device and a charging method, and to a sintering raw material charging device and a charging method configured so that pellets containing a heat source are uniformly loaded in a sintering bogie when the sintering raw material is charged.

1 is a view showing a sintered raw material charging device according to the prior art, Figure 2 is a view showing a sintered state when excess calories in the lower layer of the loaded raw material layer in the sintered raw material charging device of Figure 1, Figure 3 It is a graph showing the normal sintering completion time and the sintering completion time of the sintered raw material loaded by the sintering raw material charging device of FIG.

Referring to the drawings, the sintered ore manufacturing raw material (hereinafter referred to as 'sintering raw material') is used in the quantitative cutting device to manufacture the iron ore and the auxiliary raw materials limestone, silica, quicklime, and the heat source of the bunker coke and anthracite coal as required components in the blast furnace. It is mixed with water, mixed in the primary mixer, assembled in the secondary mixer, and charged into the surge hopper (3).

As shown in FIG. 1, the sintered raw material 1 charged into the surge hopper 3 is cut out by using the drum-type extruder 4, and then transferred by the transfer conveyor 5. The trolley 6 is brought into close contact and charged into the sintered trolley 6 which moves continuously.

The sintered trolley 6 moves forward along the rail 6a installed on the floor while the wheel rotates, and both sides of the sintered trolley are blocked so that air flows only through the upper portion thereof, and is connected to an adjacent sintered trolley 6 while being connected.

In order to manufacture the sintered raw material 1 charged into the sintered trolley 6 into sintered ore (the spectroscopic mass is made of lumped light), the burner of 1200 ° C in the ignition furnace 9 after the sintered raw material 1 is charged. By this, the surface layer portion of the raw material layer 2 is complexed.

Here, 26 wind boxes 7 (wind box, wind box) are provided in two rows under the sintered truck 6, and the wind boxes 7 are connected by a large exhaust duct 8. A large blower (not shown) provided at the end of the exhaust duct 8 is provided, and has a structure that is sucked downward through the sintering cart 6 from the upper side of the sintering cart 6.

By this downward suction, the sintered raw material 1 in the sintered trolley 6 is burned with anthracite coal and powdered coke as fuel, and is produced as a sintered ore.

In the above sintering process by the suction below, since the fine powder is contained in the iron ore recently used for the production of sintered ore, as the air flow becomes difficult toward the lower side in the sintered bogie 6, the top of the sintered bogie 6 The inflow of air from the stream is also reduced.

As a result, the productivity of the sintered ore is significantly reduced, in order to prevent this, a heat source processed into a round pellet (1a) (pellet) shape of about 6mm to 20mm is used as a sintering raw material 1 as an example. 1].

Sintered Raw Material Iron ore spectroscopy CBP (pellets) MIP (pellet) SDP (Pellets) Semi-gloss Raw materials weight(%) 81.78 1.02 2.59 1.92 6.07 6.62

In the process of charging the pellet (1a), as shown in Figure 1, it is collected by rolling down to the lower side by the vertical segregation, the upper and lower component segregation state of the loaded raw material layer (2) at this time is [Table 2] As shown in

division FeO CaO SiO ₂ MgO Al ₂ O ₃ Upper part (%) 6.63 8.59 5.02 1.52 1.82 Lower Tier (%) 9.12 8.77 5.12 1.55 1.87 Deviation +2.49 +0.18 +0.10 +0.03 +0.05

According to the components of the upper and lower layers in the raw material layer 2 due to the non-uniform distribution of the pellet (1a), there are two problems in the manufacture of sintered ore.

First, the sintered trolley 6 should be distributed in the state where the manufacture of the sintered ore is completed while passing the effective image area (suction area width 4.5m × length 110m of the trolley), but the sintering trolley is sintered due to the pellet 1a concentrated in a large amount in the lower layer. There is a limit that can not increase the sintering machine speed can be delayed and productivity is reduced.

This is because a normal sintered ore manufacture, as shown in Figure 3, the sintered completion point (C) is usually formed 6m ~ 8m before the end of the effective image area in the sintered carts 6, a large amount in the lower layer Since the collected pellets 1a only start sintering at this time, the sintering completion point D is formed after a predetermined time T, so that all of the 110 m passes through the entire layer A as shown in FIG. 2. In contrast, by keeping the glowing layer (B) in the lower layer, when discharged in that state, the sintered ore temperature is too high, there is a problem that the risk of fire accidents during transport of the belt conveyor is very high.

Therefore, in order to maintain an appropriate light distribution temperature, the speed of the sintering machine has to be slowed down, which leads to a significant decrease in productivity.

Second, in the charging process, the pellet 1a, which is collected in a large amount in the lower layer by vertical segregation, causes component deviations in the upper and lower layers as shown in [Table 2], thereby increasing the component deviation even when the sintered ore is completed. In the production of pig iron in the blast furnace there is a problem that the quality is inevitably deteriorated.

The present invention has been made to solve the above problems, and is configured to uniformly charge the pellets of the sintered raw materials containing fine powder into the sintered trolley as a charging control means, the sintering temperature is delayed during operation It is an object of the present invention to provide a sintered raw material charging device and a charging method configured to calibrate and control the charging control means according to the data.

In order to achieve the above object, a sintering raw material charging apparatus and a charging method according to a preferred embodiment of the present invention, the charging control means is configured to be uniformly charged in the pellets containing the heat source in the sintering raw materials when charging; Temperature measuring means for measuring the sintering temperature of the loaded and loaded raw material layer; And a control unit electrically connected to the charging control unit and the temperature measuring unit, respectively, to control and control the charging control unit using the sintering temperature as data.

Here, the charging control means, the guide guide plate is configured to reciprocate up and down, blocking the falling pellets and evenly distributed in the raw material layer loaded on the sintered trolley; And a driving member for rotating the guide guide plate, wherein the guide guide plate and the driving member are electrically connected to the control unit, respectively.

At this time, the driving member, the piston is preferably a cylinder for rotating the guide guide plate by pushing or pulling one side of the guide guide plate.

Here, it is preferable that the control unit controls and regulates the rotational speed of the guide guide plate so that the pellets are uniformly distributed between the upper and lower layers of the raw material layer.

In addition, the temperature measuring means is preferably installed in the wind box disposed below the sintering bogie to measure the sintering temperature by measuring the temperature of the air sucked down through the sintering bogie.

Further, the present invention further comprises a raw material cutting means for controlling the amount of cutting of the sintered raw material from the hopper containing the raw material to the sintered trolley side, wherein the raw material cutting means is electrically connected to the control unit, the control unit is a sintering temperature The data can be adjusted and controlled by the data cutting means.

At this time, the raw material cutting means, the cutting drum is disposed in the lower opening of the hopper, cutting the sintered raw material while rotating; And a driving motor which rotates the cutting drum and is electrically connected to the controller.

In addition, the raw material cutting means, it is preferable to further include a post-layer measuring member for measuring the height of the raw material layer loaded in the sintered trolley.

Here, it is preferable that the control unit controls and regulates the rotational speed of the cutting drum to change the thickness of the raw material layer.

In addition, the control unit may control the charging control means according to the content ratio of the pellets in the sintered raw material.

On the other hand, according to another aspect of the present invention, when charging the sintering raw material, the charging control step of uniformly loading the pellet containing the heat source of the sintering raw material into the sintered trolley as the charging control means; A temperature measuring step of measuring a sintering temperature of the charged sintering raw material; And a control step of controlling and controlling the charging control means by the control unit using the sintering temperature as data.

At this time, the charging control means, the guide guide plate is configured to rotate reciprocating up and down, and evenly distributed in the raw material layer loaded on the sintered trolley while blocking the falling pellet; And a driving member for rotating the guide guide plate, wherein the driving members are electrically connected to the control unit, respectively.

Here, it is preferable that the control unit controls and regulates the rotational speed of the guide guide plate so that the pellets are uniformly distributed between the upper and lower layers of the raw material layer.

The present invention may further include a setting control step of setting the rotational speed of the guide guide plate through the control unit according to the pellet content ratio in the sintered raw material before the charging adjustment step.

In addition, the present invention, before the charging control step, may further include a cut-out adjusting step of controlling the amount of cutting of the sintered raw material from the receiving member to the raw material cutting means, by the sintering temperature in the control step The raw material cutting means can be controlled.

At this time, the raw material cutting means, the cutting drum is disposed in the lower opening of the hopper, cutting the sintered raw material while rotating; And a driving motor which rotates the cutting drum and is electrically connected to the controller.

Here, it is preferable that the control unit controls and regulates the rotational speed of the cutting drum to change the thickness of the raw material layer.

The sintering raw material charging device and the charging method according to the present invention are configured to uniformly load pellets of sintered raw materials containing fine powder into the sintered trolley as a charging control means, and the sintering temperature is delayed during operation. After grasping as described above, according to the correction of the charging control means, by increasing the overall sintering speed by advancing the time of completion of sintering has the effect of achieving productivity improvement.

Furthermore, by reducing the variation in the composition of the sintered ore produced by reducing the variation of the upper and lower portions in the raw material layer loaded in the sintered bogie, the quality of pig iron produced in the blast furnace is consequently improved.

1 is a view showing a sintered raw material charging apparatus according to the prior art.
FIG. 2 is a view showing a sintered state at the time of excess calories in the lower portion of the loaded raw material layer in the sintering raw material charging device of FIG. 1.
3 is a graph showing normal sintering completion time and effective sintering completion time of the sintered raw material loaded by the sintering raw material charging device of FIG.
4 is a view showing a sintered raw material charging apparatus according to a preferred embodiment of the present invention.
5 is an enlarged view illustrating a guide guide plate in the sintering raw material charging device of FIG. 4.
6 is a flowchart sequentially showing a sintering raw material charging method according to a preferred embodiment of the present invention.

The present invention is configured to uniformly charge the pellets of the sintered raw material containing fine powder into the sintered trolley by the charging control means, and after grasping the sintering temperature as a data, the sintering completion point during operation is determined, and accordingly the charging control It is a technical feature to be configured to calibrate and control the means.

Accordingly, the present invention can improve productivity by increasing the overall sintering speed as the sintering completion point is advanced, and the component deviation of the sintered ore manufactured by reducing the deviation of the upper and lower portions in the raw material layer loaded in the sintered trolley. As a result, it has the advantage of increasing the quality of pig iron produced in the blast furnace.

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

4 is a view showing a sintered raw material charging apparatus according to a preferred embodiment of the present invention, Figure 5 is an enlarged view showing a guide guide plate in the sintered raw material charging apparatus of FIG.

Referring to the drawings, the present invention relates to the charging control means 20, the raw material layer 2 of the charge control means 20 is configured to uniformly charge the pellet (1a) of the sintered raw material (1) containing fine powder Temperature control means 40 for measuring the sintering temperature, and a control unit (C) for controlling the charge control means 20 by the sintering temperature as data.

The charging control means 20 serves to prevent vertical segregation of the sintered raw material 1 charged into the sintered trolley 6. In particular, the raw material layer 2 into which the pellet 1a of the sintered raw material 1 is loaded To be evenly distributed).

The charging control means 20 is provided with a guide guide plate 21 that rotates to guide the charging of the sintered raw material (1) in the sinter bogie (6), and a drive member (22) for rotationally driving the guide plate Can be.

The guide guide plate 21 is configured to rotate in the sintered trolley 6, and is guided while blocking the falling pellets 1a to be uniformly distributed in the raw material layer 2 loaded on the sintered trolley 6.

That is, in the guide guide plate 21, the one end portion 21a of the inclined surface 2a side of the raw material layer 2 is formed while the raw material is loaded while rotating about the rotation axis of the guide guide plate 21. It rises and falls along the inclined surface 2a of (2) to an upper layer part and a lower layer part.

As a result, the falling pellet 1a is blocked by the one end portion 21a of the guide guide plate 21 and no longer descends downward, but slides downward inclined downward along the guide guide plate 21. It is placed at the point of contact with the inclined surface (2a) of.

In addition, the driving member 22 is a member for rotating the guide guide plate 21, the piston 22b is a cylinder for rotating the guide guide plate 21 by pushing or pulling one side of the guide guide plate 21. (22a) may be utilized.

At this time, the piston 22b is pivotally connected to the other end of the guide guide plate 21 to rotate the guide guide plate 21 as it extends and contracts, and the body of the cylinder 22a is also a fixed position Is configured to rotate.

Each of the driving members 22 is electrically connected to the control unit C and controlled by the control unit C, thereby controlling and controlling the rotation angle of the guide guide plate 21.

The charging control means 20 as described above may be controlled by the controller C by using the sintering temperature measured by the temperature measuring means 40 as data.

In addition, depending on the content ratio of the pellet (1a) before charging the sintered raw material (1), as an example, the rotational speed of the guide guide plate 21 can be set control as shown in Table 3 below.

At this time, the rotational speed of the guide guide plate 21 may be determined by the controller C by the up and down number of times of the one end portion 21a of the guide guide plate 21 in one sintered trolley 6.

Pellet content ratio (% .wt) Guide-guided plate up and down the number of times (times) 2 to 5 4 6 to 8 6 9-11 8 12-14 10 15-17 12 18-20 16 21-23 20 24 ~ 26 26 27-30 40

Then, the temperature measuring means 40 is configured to measure the sintering temperature of the charged raw material layer (2), it is possible to measure the sintering temperature by measuring the temperature of the air sucked down through the sintering cart (6).

In this case, the temperature measuring means 40 may be installed in the wind box 7 disposed below the sintering cart 6, and the first thermometer 41 electrically connected to the control unit C may be utilized.

The controller C may adjust and control the rotational speed of the guide guide plate 21 of the charging control means 20 by using the sintering temperature measured by the first thermometer 41 as data.

In addition, the temperature measuring means 40 may further include a second thermometer 42 installed at the rear end of the exhaust duct 8 for communicating the plurality of wind boxes 7. The overall sintering temperature can be measured.

On the other hand, the present invention may further include a raw material cutting means for controlling the cutting amount of the sintered raw material (1) from the hopper (3) containing the raw material to the sintered trolley (6) side.

The raw material cutting means is disposed in the lower opening of the hopper 3 and rotates to drive the cutting drum 31 for cutting the sintered raw material 1 and the cutting drum 31 to electrically drive the cutting drum 31. It may be provided with a drive motor (not shown) associated with.

In addition, the raw material cutting means may further include a post-layer measuring member 32 for measuring the height of the raw material layer 2 loaded in the sintered trolley 6.

In this case, the layer post-measuring member 32 is disposed on the upper side of the sintered trolley 6 and a laser distance measuring sensor for measuring the height of the raw material layer 2 loaded in the sintered trolley 6 may be used. The distance measuring sensor can measure the thickness after the layer of the raw material layer 2, that is, the layer thickness, by measuring the distance from the raw material layer 2 with a laser.

As the cutting drum 31 and the post-layer measuring member 32 are electrically connected to the control unit C, respectively, and controlled by the control unit C, the cutting speed of the cutting drum 31 is controlled by controlling the rotational speed of the cutting drum 31. The thickness of the raw material layer 2 can be changed by adjusting the cutting amount of 1).

At this time, the control unit C can determine the thickness of the raw material layer 2 by the post-layer measuring member 32, thereby determining the vertical rotation angle of the guide guide plate 21 in the charging control means 20. have.

The control unit C is electrically connected to the charging control means 20, the raw material cutting means and the temperature measuring means 40, respectively, and the charging control means 20 and the raw material cutting means are made using the sintering temperature as data. Can be controlled.

Conventionally, when the pellet 1a is located unevenly in the lower layer of the raw material layer 2, in the process of sintering and sintering the raw material 1 containing a large amount of fine powder located in the upper layer, sintering of the air hardly takes place under suction of air. The pellet 1a of the lower layer is not sintered at an initial stage, but only afterwards, the sintering process is performed.

In this way, the sintering completion is delayed, the productivity is lowered, and the component deviation of the sintered ore is also increased due to the component deviation of the upper and lower layers of the raw material layer 2, and the quality of pig iron as the final product is lowered.

To prevent this, the controller C of the present invention may adjust and control the rotational speed of the guide guide plate 21 so as to uniformly distribute the pellet 1a between the upper and lower layers of the raw material layer 2. .

In addition, the controller C may adjust and control the rotation speed of the cutting drum 31 to change the thickness of the raw material layer 2.

As an example, when the sintering temperature measured by the temperature measuring means 40 is measured to be relatively low, the control unit (C) by controlling the speed of the rotation of the guide guide plate 21 in the charging control means 20 quickly, The pellet 1a can be uniformly distributed between the upper layer part and the lower layer part of the raw material layer 2.

In addition, in the above case, by controlling the rotation speed of the cutting drum 31 slowly in the raw material cutting means, it is possible to change the thickness of the raw material layer 2 to be thinner, thereby sintering completion time can be advanced. .

Then, the sintered raw material charging method according to a preferred embodiment of the present invention, with reference to Figure 6, will be described in detail.

First, the sintering machine 1 is loaded into the sintering trolley 6 by operating the sintering machine. When the sintering raw material 1 is charged, the pellet 1a containing the heat source in the sintering raw material 1 is charged with the charging control means ( 20) uniformly charged in the sintered trolley 6 (charge control step).

In other words, by rotating the guide guide plate 21 in the charging control means 20, it is distributed evenly in the raw material layer 2 to be guided and loaded while blocking the falling pellet (1a).

By the way, prior to this charging adjustment step, the rotational speed of the guide guide plate 21 can be set through the control unit C in accordance with the content ratio of the pellet (1a) in the sintered raw material (setting control step).

After charging the sintering raw material 1 as mentioned above, the surface layer part of the raw material layer 2 is complexed in the ignition furnace 9. Through this, the sintering temperature of the raw material layer 2 is measured by the temperature measuring means 40 in the process of sintering the raw material layer 2 (temperature measuring step).

At this time, the control unit C controls the charging control means 20 by the sintering temperature as the data (control step). When the sintering temperature measured value by the temperature measuring means 40 is measured to be relatively lower than the set value, the control unit C increases the rotational speed of the guide guide plate 21 in the charging control means 20, pellet (1a) ) Can be more uniformly distributed between the upper and lower layers of the raw material layer 2.

Here, before the charging control step, the control unit C may control the raw material cutting means by using the sintering temperature as data (cutting control step). That is, when the sintering temperature measured value by the temperature measuring means 40 is measured to be relatively lower than the set value, the control unit C lowers the rotational speed of the cutting drum 31 in the raw material cutting means, the raw material layer 2 By changing the thickness of the thinner can be sintered completion time earlier.

As described above, the present invention is configured to uniformly charge the pellet (1a) of the sintered raw material (1) containing fine powder into the sintering cart (6) by the charging control means 20, the sintering completion point during operation is delayed After losing the sintering temperature as a data, it is possible to improve productivity by increasing the overall sintering rate as the sintering completion point is advanced by correcting the charging control means 20 accordingly.

Further, by reducing the variation in the composition of the sintered ore produced by reducing the variation of the upper and lower portions of the raw material layer 2 loaded in the sintered bogie 6, the quality of pig iron produced in the blast furnace can be improved as a result.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is to be understood that various changes and modifications may be made without departing from the scope of the appended claims.

20: charging control means 21: guide guide plate
21a: one end (of guide guide plate) 22: drive member
22a: cylinder 22b: piston
31: cutting drum 32: post-layer measuring member
40: temperature measuring means 41: the first thermometer
42: second thermometer C: control unit

Claims (17)

When charging the sintered raw material (1), the charging control means 20 is configured to uniformly charge the pellet (1a) containing the heat source into the sintered trolley (6);
Temperature measuring means (40) for measuring the sintering temperature of the charged and loaded raw material layer (2);
A control unit (C) electrically connected to the charging control means (20) and the temperature measuring means (40) to control the charging control means (20) by using the sintering temperature as data;
Sintered raw material charging device comprising a.
The method of claim 1,
The charging control means 20,
A guide guide plate 21 configured to reciprocate up and down and to distribute the pellets 1a while blocking the falling pellets 1a to be uniformly distributed in the raw material layer 2 loaded on the sintered trolley 6; And
And a driving member 22 for rotating and driving the guide guide plate 21.
The guide guide plate 21 and the driving member 22 is electrically connected to the control unit (C), respectively, characterized in that the sintered raw material charging device.
3. The method of claim 2,
The drive member (22) is a sintered raw material charging device, characterized in that the piston (22a) to rotate the guide guide plate 21 by pushing or pulling one side of the guide guide plate (21).
3. The method of claim 2,
The controller C controls the rotational speed of the guide guide plate 21 so as to uniformly distribute the pellet 1a between the upper and lower layers of the raw material layer 2. Device.
The method of claim 1,
The temperature measuring means 40 is installed in the wind box 7 disposed below the sintered bogie 6 to measure the temperature of the air sucked down through the sintered bogie 6 to measure the sintering temperature. Sintered raw material charging device characterized in that.
The method of claim 1,
Raw material cutting means for controlling the cutting amount of the sintered raw material (1) from the hopper (3) containing the raw material to the sintered trolley (6) side;
The raw material cutting means is electrically connected to the control unit (C), the control unit (C) controls the raw material cutting means by controlling the sintering temperature as data characterized in that the raw material charging device.
The method according to claim 6,
The raw material cutting means,
A cutting drum 31 disposed in the lower opening of the hopper 3 to cut the sintered raw material 1 while rotating; And
A driving motor which rotates the cutting drum 31 and is electrically connected to the controller C;
Sintered raw material charging apparatus characterized in that it comprises a.
The method of claim 7, wherein
The raw material cutting means,
A post-layer measuring member 32 for measuring the height of the raw material layer 2 loaded in the sintered trolley 6;
Sintered raw material charging apparatus characterized in that it further comprises.
The method of claim 7, wherein
The control unit (C) is a sintered raw material charging apparatus, characterized in that for controlling the rotational speed of the cutting drum (31) to change the thickness of the raw material layer (2).
10. The method according to any one of claims 1 to 9,
The control unit (C), the sintering raw material charging apparatus, characterized in that for controlling the charging control means 20 in accordance with the content ratio of the pellet (1a) of the sintering raw material (1).
When charging the sintering raw material (1), the charging control step of uniformly loading the pellet (1a) containing the heat source in the sintering raw material (1) into the sintering cart (6) with the charging control means (20);
A temperature measuring step of measuring a sintering temperature of the charged sintered raw material 1; And
A control step of controlling, by the controller C, the charging control means 20 by controlling the sintering temperature as data;
Sintering raw material charging method comprising a.
12. The method of claim 11,
The charging control means 20,
A guide guide plate 21 configured to reciprocate up and down and to distribute the pellets 1a while blocking the falling pellets 1a to be uniformly distributed in the raw material layer 2 loaded on the sintered trolley 6; And
And a driving member 22 for rotating and driving the guide guide plate 21.
Sintering raw material charging method characterized in that the drive member 22 is electrically connected to the control unit (C), respectively.
The method of claim 12,
The controller C controls the rotational speed of the guide guide plate 21 so as to uniformly distribute the pellet 1a between the upper and lower layers of the raw material layer 2. Way.
The method of claim 12,
Before the charging control step,
A setting control step of setting the rotational speed of the guide guide plate 21 through the control unit C according to the content of pellets 1a in the sintered raw material 1;
Sintering raw material charging method characterized in that it further comprises.
12. The method of claim 11,
Before the charging control step,
And a cutout adjusting step of controlling a cutting amount of the sintered raw material 1 from the receiving member as a raw material cutting means.
Sintering raw material charging method characterized in that for controlling the raw material cutting means by controlling the sintering temperature as data in the control step.
16. The method of claim 15,
The raw material cutting means,
A cutting drum 31 disposed in the lower opening of the hopper 3 to cut the sintered raw material 1 while rotating; And
A driving motor which rotates the cutting drum 31 and is electrically connected to the controller C;
Sintering raw material charging method characterized in that it comprises a.
17. The method of claim 16,
The control unit (C) controls the rotational speed of the cutting drum (31) so as to change the thickness of the raw material layer (2).

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