KR20210073118A - Control system for desulfurization apparatus of molten iron and control method thereof - Google Patents

Abstract

A control system of a molten metal desulfurization device is disclosed. The control system of a molten metal desulfurization device comprises: a molten metal desulfurization device which desulfurizes molten metal using rotation of an impeller and a desulfurization agent; and a processor driving a rotation driving unit rotating a shaft connected to the impeller to drop slag attached to the impeller to a lower side by using centrifugal force by idle rotation of the impeller when placed in an upper portion while the impeller is immersed after completion of desulfurization.

Description

A control system for molten iron desulfurization apparatus and a control method therefor {CONTROL SYSTEM FOR DESULFURIZATION APPARATUS OF MOLTEN IRON AND CONTROL METHOD THEREOF}

The disclosed invention relates to a control system for a molten iron desulfurization apparatus and a control method therefor, and more particularly, to a control system for a molten iron desulfurization apparatus and a control method thereof, which can efficiently remove molten iron without increasing the cost of a separate additional apparatus will be.

In general, the molten iron produced through the iron making process in a blast furnace goes through a refining process of adjusting the content of some components in the molten iron to finally obtain molten steel and products of desired components.

After refining to adjust the sulfur (S) and phosphorus (P) contained in the molten iron to below a certain level, it is charged into the converter, and the components are further adjusted through secondary refining by oxygen blowing in the converter.

As a method of desulfurizing molten iron, a mechanical stirring method with relatively high desulfurization efficiency is used. The mechanical stirring method is a method of desulfurization through a reaction between molten steel and a desulfurization agent by immersing and rotating a stirrer called an impeller in a container in which the molten iron is accommodated. A representative method of a desulfurization method using a mechanical stirring method is a method using a KR facility (Kanvara reactor).

In recent years, when desulfurizing molten iron, research on a molten iron desulfurization device for removing solidified metal while changing from a liquid state attached to an impeller to a solid state is being actively conducted. In one example, the gold was removed using a separate gold removal device.

However, the conventional gold removal apparatus has not been able to efficiently remove the gold now due to an increase in the cost of an additional device required to remove the gold.

For the above reasons, an aspect of the disclosed invention is to provide a control system and a control method of the molten iron desulfurization device that can efficiently remove the current without an increase in the cost of a separate additional device.

A control system for a molten iron desulfurization apparatus according to an aspect of the disclosed invention includes: a molten iron desulfurization apparatus for desulfurizing molten iron using a rotational operation of an impeller and a desulfurization agent; And, after the desulfurization treatment is completed, when the impeller is raised to the upper part in a immersed state, the shaft connected to the impeller is rotated to drop the slag attached to the impeller to the lower part using centrifugal force due to the idle rotation of the impeller It may include a control device including a processor for driving the rotating drive to operate.

The control device may drive the rotation driving unit before the slag is solidified while changing from a liquid state to a solid state.

The control device may drive the rotation driving unit in a manual mode or an automatic mode in response to an impeller idle model including a predetermined maximum target RPM, a time to reach the maximum target RPM, and a target idle operation time.

The control device may drive the rotary driving unit in a manual mode or an automatic mode in response to an impeller idle model including a motor forward operation pattern or a motor reverse operation pattern or a motor bidirectional operation pattern for a predetermined target idle operation time. .

Further comprising a camera for obtaining slag image data by photographing the slag attached to the impeller; The control device includes a processor for processing the obtained slag image data, and in response to processing the obtained slag image data, a maximum target RPM for driving the rotation drive unit and a time to reach the maximum target RPM; An impeller idling model including a target idling uptime may be further determined.

Further comprising a camera for obtaining slag image data by photographing the slag attached to the impeller; The control device may include a processor for processing the obtained slag image data, and may further inform that the slag is removed when the slag falls to the bottom in response to processing the obtained slag image data.

Further comprising a weight sensor for obtaining impeller weight detection data by sensing the weight of the impeller containing the slag; The control device includes a processor for processing the obtained impeller weight detection data, and in response to processing the obtained impeller weight detection data, reaching a maximum target RPM and a maximum target RPM for driving the rotation drive unit It is possible to further determine the impeller idle model including the time and target idle run time.

Further comprising a weight sensor for obtaining impeller weight detection data by sensing the weight of the impeller containing the slag; The control device may include a processor for processing the obtained impeller weight detection data, and may further inform that the slag is removed when the slag falls to the bottom in response to processing the obtained impeller weight detection data.

The molten iron desulfurization apparatus includes: a container for accommodating the molten iron and the desulfurization agent; an impeller immersed in the vessel to stir the molten iron and the desulfurization agent; a shaft connected to an upper portion of the impeller; a rotation driving unit connected to the shaft to rotate the impeller according to a rotation operation of the shaft; and an elevating driving unit connected to the rotary driving unit to raise and lower the impeller according to the elevating operation of the rotating driving unit.

The control method of the molten iron desulfurization apparatus according to an aspect of the disclosed invention is to lower the impeller connected to the rotary drive into the inside of the container for accommodating the molten iron by the elevating drive connected to the rotary drive, and immerse the impeller, The desulfurization agent is put into the inside, the molten iron is desulfurized by agitating the molten iron and the desulfurization agent by rotating the impeller by a rotation driving unit that rotates the shaft connected to the impeller, and the desulfurization process is completed after the elevating driving unit The slag attached to the impeller is raised to the upper part in a immersed state, and the slag attached to the impeller is lowered by using the centrifugal force caused by the idling of the impeller by the control device for driving the rotation driving part for rotating the shaft. may include dropping

Dropping the slag attached to the impeller to the lower portion may be to drive the rotational driving unit before the slag is solidified while changing from a liquid state to a solid state by the control device.

Dropping the slag attached to the impeller to the lower side is, by the control device, the impeller idling model including the predetermined maximum target RPM and the reaching time to the maximum target RPM and the target idling operation time of the rotary drive unit Corresponding to It may be driven manually or automatically.

Dropping the slag attached to the impeller to the lower side is, by the control device, a motor forward operation pattern or a reverse motor operation pattern or a motor bidirectional operation pattern for a predetermined target idle operation time of the rotation drive unit. It may be driven manually or automatically in response to the model.

The slag attached to the impeller is photographed by a camera to further acquire slag image data, and by a control device responsive to processing the obtained slag image data, the maximum target RPM and the maximum target for driving the rotation drive unit The method may further include determining an impeller idle model comprising a time to RPM and a target idle run time.

By photographing the slag attached to the impeller by a camera to further acquire slag image data, and by a control device responsive to processing the obtained slag image data, when the slag falls to the lower part, it is further informed that the slag is removed may include

By sensing the weight of the impeller containing the slag by a weight sensor to further acquire impeller weight detection data, and by a control device responsive to processing the obtained impeller weight detection data, for driving the rotation drive unit The method may further include determining an impeller idle model including the maximum target RPM, the time to reach the maximum target RPM, and the target idle running time.

By sensing the weight of the impeller containing the slag by a weight sensor to further acquire impeller weight detection data, and by a control device responsive to processing the obtained impeller weight detection data, when the slag falls to the bottom, the slag It may further include notifying that is removed.

According to one aspect of the disclosed invention, it is possible to provide a control system and a control method of the molten iron desulfurization device that can efficiently remove the current without an increase in the cost of a separate additional device.

1 shows an example of a control system of the molten iron desulfurization apparatus according to an embodiment.
2 shows a configuration of a control device according to an embodiment.
3 shows an impeller idle model.
Figure 4 shows an example of a control method of the control system of the molten iron desulfurization apparatus according to an embodiment.
Figure 5 shows the operation of dropping the slag attached to the impeller to the bottom.
6 shows a state in which the slag attached to the impeller is removed.
Figure 7 shows another example of the control system of the molten iron desulfurization apparatus according to an embodiment.
8 shows a configuration of a control device according to an embodiment.
Figure 9 shows another example of the control method of the control system of the molten iron desulfurization apparatus according to an embodiment.
10 shows an operation of dropping the slag attached to the impeller downward.
11 shows a state in which the slag attached to the impeller is removed.

Like reference numerals refer to like elements throughout. This specification does not describe all elements of the embodiments, and general content in the technical field to which the disclosed invention pertains or content overlapping between the embodiments is omitted. The term 'part, module, member, block' used in the specification may be implemented in software or hardware, and according to embodiments, a plurality of 'part, module, member, block' may be implemented as one component, It is also possible for one 'part, module, member, block' to include a plurality of components.

Throughout the specification, when a part is "connected" with another part, it includes not only direct connection but also indirect connection, and indirect connection includes connection through a wireless communication network. do.

In addition, when a part "includes" a certain component, this means that other components may be further included rather than excluding other components unless otherwise stated.

Throughout the specification, when a member is said to be located "on" another member, this includes not only a case in which a member is in contact with another member but also a case in which another member exists between the two members.

Terms such as 1st, 2nd, etc. are used to distinguish one component from another component, and the component is not limited by the above-mentioned terms.

The singular expression includes the plural expression unless the context clearly dictates otherwise.

In each step, the identification code is used for convenience of description, and the identification code does not describe the order of each step, and each step may be performed differently from the specified order unless the specific order is clearly stated in the context. have.

Hereinafter, the working principle and embodiments of the disclosed invention will be described with reference to the accompanying drawings.

1 shows an example of a control system of the molten iron desulfurization apparatus according to an embodiment.

As shown in FIG. 1, the control system 100 of the molten iron desulfurization apparatus 110 uses the centrifugal force caused by the idle rotation of the impeller 111 to lower the slag (S, see FIG. 5) attached to the impeller 111. Controls the molten iron desulfurization device 110 by the control device 120 to drop it.

Hereinafter, the control system 100 of the molten iron desulfurization apparatus 110 will be described in detail.

The control system 100 of the molten iron desulfurization apparatus 110 includes the molten iron desulfurization apparatus 110 and the control apparatus 120 .

The molten iron desulfurization apparatus 110 desulfurizes the molten iron (M1) by using the rotational operation of the impeller 111 and the desulfurization agent (M2).

The molten iron desulfurization apparatus 110 may include a container L, an impeller 111 , a shaft 112 , a rotation driving unit 113 , and an elevating driving unit 114 .

The container (L) can accommodate the molten iron (M1) and the desulfurization agent (M2). Since the container L stores the hot molten iron M1, it may include a refractory wall. For example, the container L may be a ladle. Not limited to the bar shown, the container (L) may be provided with a variety of accommodating means.

The impeller 111 may be immersed in the interior of the vessel (L) to stir the molten iron (M1) and the desulfurization agent (M2). The desulfurization agent (M2) may be introduced into the container (L) to desulfurize the molten iron (M1). Referring to FIG. 5 , the impeller 111 may include four rotary blades 111a. The four rotor blades 111a may be provided to be spaced apart at intervals of 90 degrees, and by rotating while being immersed in the molten iron M1, it is possible to promote desulfurization of the molten iron M1. The four rotor blades 111a may be formed so that the width of the upper end is larger than the width of the lower end. For example, the four rotor blades 111a may be formed to be inclined so that the width becomes narrower from the upper end to the lower end. These four rotary blades (111a) may generate a downflow in the molten iron (M1) stirred by the rotation of the impeller (111). Not limited to the illustrated bar, the impeller 111 may be provided in various structures or various shapes capable of sufficiently stirring the molten iron (M1) accommodated in the container (L).

The shaft 112 may be connected to an upper portion of the impeller 111 . The rotation driving unit 113 may be connected to the shaft 112 to rotate the impeller 111 according to the rotational operation of the shaft 112 . For example, the rotation driving unit 113 may rotate the shaft 112 while controlling the rotation speed of the shaft 112 using a reducer and a motor.

The elevating driving unit 114 may be connected to the rotation driving unit 113 to elevate the impeller 111 according to the elevating operation of the rotating driving unit 113 . The elevating driving unit 114 may include sheaves 114a1 , 114a2 and Sheave, a reducer 114b and a motor 114c. The two sheaves (114a1, 114a2, Sheave) may be provided to hang the wire rope (W) connected to the rotation drive unit 113 to raise or lower. Not limited to the bar shown, the sheave (114a1, 114a2, Sheave) is three or more to hang the wire rope (W) according to the weight of the impeller 111 and the shaft 112 and the rotation driving unit 113 to raise or lower it. can be provided as The reducer 114b can adjust the speed of pulling up and hanging the wire rope (W) or the speed of hanging and pulling the wire rope (W). The motor 114c may raise or lower the wire rope W. It is not limited to the illustrated bar, and the elevating driving unit 114 may be provided in various structures capable of elevating the impeller 111 .

2 shows a configuration of a control device according to an embodiment. 3 shows an impeller idle model.

2 , the control device 120 may include a processor 121 and a memory 122 . For example, the control device 120 may be a local control panel or a PC or a tablet PC or a notebook computer.

The processor 121 is slag attached to the impeller 111 using centrifugal force due to idle rotation of the impeller 111 when the impeller 111 is raised to the upper part in a immersed state after the desulfurization process is completed (S, FIG. 5) may drive the rotation driving unit 113 for rotating the shaft 112 connected to the impeller 111 to drop it downward.

The processor 121 may drive the rotation driving unit 113 before the slag (S, see FIG. 5) becomes solid while changing from a liquid state to a solid state.

As shown in FIG. 3 , the processor 121 uses the rotation drive unit 113 (see FIG. 2 ) to reach the predetermined maximum target RPM (RPM2) and the maximum target RPM (RPM2) time t1 and target idle operation time (t1 to t2) can be driven in manual mode or automatic mode by the operator and / or manager in response to the impeller idle model including the. RPM1 may be an existing RPM.

For example, in the impeller idle model, the maximum target RPM (RPM2) is 50, the reaching time (t1) to the maximum target RPM (RPM2) is 9 seconds, and the target idle operation time (t1 ~ t2) is 16 (9 ~ 25) can be RPM1 may be 30, and the total time t3 until the slag (S, see FIG. 5) falls to the bottom may be 66 seconds.

As another example, in the impeller idle model, the maximum target RPM (RPM2) is 70, the time to reach the maximum target RPM (RPM2) (t1) is 53 seconds, and the target idle operation time (t1 to t2) is 13 (53) ~66 seconds). RPM1 may be 30, and the total required time t3 until the slag (S, see FIG. 5) falls to the bottom may be 87 seconds.

As another example, in the impeller idle model, the maximum target RPM (RPM2) is 70, the time to reach the maximum target RPM (RPM2) (t1) is 36 seconds, and the target idle operation time (t1 to t2) is 21 ( 36-57). RPM1 may be 30, and the total required time t3 until the slag (S, see FIG. 5) falls to the bottom may be 107 seconds.

The processor 121 (refer to FIG. 2) operates the rotation driving unit 113 (refer to FIG. 2) for a predetermined target idle operation time (t1 to t2, see FIG. 3) for a motor forward operation pattern or a reverse motor operation pattern or a motor bidirectional operation pattern It can be driven in manual mode or automatic mode by the operator and / or manager in response to the impeller idle model comprising a.

For example, the motor forward operation pattern may be that the motor continuously operates in the forward direction, and the motor operates while discontinuously alternating the forward operation and the stop operation.

For another example, the motor reverse operation pattern may be that the motor continuously operates in the reverse direction, and the motor operates while discontinuously alternating the reverse operation and the stopping operation.

As another example, the motor bidirectional operation pattern may be one in which the motor discontinuously alternates a forward operation, a stopping operation, and a reverse operation, and the motor operates while discontinuously alternating a reverse operation, a stopping operation, and a forward operation may be doing

The processor 121 (see FIG. 2) generates a signal for adjusting the rotational speed of the shaft 112 (see FIG. 2) and/or generates a signal for rotating the shaft 112 (see FIG. 2) and/or a wire rope (W, see FIG. 1) generating a signal for controlling the speed of hanging and pulling and/or generating a signal for controlling the speed of hanging and pulling the wire rope (W, see FIG. 1) and/or generating a signal for controlling the speed of hanging and pulling the wire rope (W, see FIG. 1) and/or , see Fig. 1) to generate a signal for hooking up and/or pulling a wire rope (W, see Fig. 1) and/or to adjust the idle speed of the shaft 112 (see Fig. 2) It may include a micro control unit (MCU) for generating a signal for generating a signal for and/or generating a signal for idling the shaft 112 (refer to FIG. 2 ).

The memory 122 generates a signal for regulating the rotational speed of the shaft 112 (see FIG. 2) and/or generates a signal for rotating the shaft 112 (see FIG. 2) and/or a wire rope (W, FIG. 2) 1) generating a signal for regulating the speed of hooking and pulling and/or generating a signal for regulating the speed of hooking and pulling the wire rope (W, see FIG. 1) and/or generating a signal for controlling the speed of hooking and pulling the wire rope (W, see FIG. 1) ) and/or generating a signal for hooking and pulling a wire rope (W, see Fig. 1) and/or generating a signal for regulating the idle speed of the shaft (112, see Fig. 2) and/or a program and/or data for generating a signal for idling the shaft 112 (see FIG. 2 ).

The memory 122 includes not only volatile memories such as S-RAM and D-RAM, but also flash memory, read only memory (ROM), erasable programmable read only memory (EPROM), etc. of non-volatile memory.

Figure 4 shows an example of a control method of the control system of the molten iron desulfurization apparatus according to an embodiment. Figure 5 shows the operation of dropping the slag attached to the impeller to the bottom. 6 shows a state in which the slag attached to the impeller is removed.

Referring to FIG. 4, the elevating driving unit 114 (see FIG. 2) is a container (L, see FIG. 1) for accommodating the molten iron (M1, see FIG. 1) at the time of refining the molten iron (M1, see FIG. 1) The impeller 111 (see FIG. 1) connected to the rotation drive unit 113 (see FIG. 1) and the shaft 112 (see FIG. 1) is lowered to the inside to immerse the impeller (111, see FIG. 1) (410). Elevating driving unit (114, see Fig. 2) is a wire rope (W, see Fig. 1) using a sheave (114a1, 114a2, see Fig. 1) and a reducer (114b, see Fig. 1) and a motor (114c, see Fig. 1) ), while controlling the speed of hanging and pulling down the wire rope (W, see Fig. 1) can be pulled down. The control device 120 (see FIG. 1) may transmit a signal for controlling the speed of hanging and pulling the wire rope (W, see FIG. 1) to the reducer (114b, see FIG. 1). The control device 120 (see FIG. 1) may transmit a signal for hanging and pulling the wire rope (W, see FIG. 1) to the motor 114c (see FIG. 1).

Although not shown, the desulfurization agent input unit inputs the desulfurization agent (M2, see FIG. 1) into the container (L, see FIG. 1) (420). When the desulfurization agent input unit is stirred using the impeller (111, see FIG. 1), the molten iron (M1, see FIG. 1) overcomes inertia and the rotational speed of the impeller (111, see FIG. 1) becomes a constant speed, the desulfurization agent ( M2, see FIG. 1) can be added. The control device 120 (see FIG. 1 ) may transmit a signal for inputting the desulfurization agent M2 (see FIG. 1 ) to the desulfurization agent input unit. For example, the desulfurization agent input unit may be a hopper.

The rotary driving unit 113 (see FIG. 1) rotates the impeller (111, see FIG. 1) to stir the molten iron (M1, see FIG. 1) and the desulfurization agent (M2, see FIG. 1) to produce the molten iron (M1, see FIG. 1). Desulfurization treatment (430). The rotation driving unit 113 (refer to FIG. 1) may rotate the shaft 112 (refer to FIG. 1) while controlling the rotation speed of the shaft 112 (refer to FIG. 1) using a speed reducer and a motor. The control device 120 (refer to FIG. 1) may transmit a signal for adjusting the rotation speed of the shaft 112 (refer to FIG. 1) to the speed reducer. The control device 120 (refer to FIG. 1 ) may transmit a signal for rotating the shaft 112 (refer to FIG. 1 ) to the motor.

As shown in FIG. 5 , the elevating driving unit 114 raises the impeller 111 connected to the rotation driving unit 113 and the shaft 112 to the upper part in a immersed state after the desulfurization process is completed (440). Elevating driving unit 114 can raise the wire rope (W) while controlling the speed of hanging and lifting the wire rope (W) using the sheave (114a1, 114a2) and the reducer (114b) and the motor (114c). The control device 120 may transmit a signal for controlling the speed of hanging and pulling the wire rope (W) to the reducer (114b). Control device 120 may transmit a signal for hanging and pulling the wire rope (W) to the motor (114c).

The control device 120 rotates the shaft 112 connected to the impeller 111 so as to drop the slag (S) attached to the impeller 111 to the lower side by using the centrifugal force caused by the idle rotation of the impeller 111 . The driving unit 113 is driven ( 450 ). The control device 120 may drive the rotation driving unit 113 before the slag (S) is solidified while changing from a liquid state to a solid state. The rotation driving unit 113 may idle the shaft 112 while controlling the idle speed of the shaft 112 using a reducer and a motor. The control device 120 may transmit a signal for adjusting the idling speed of the shaft 112 to the reducer, and may transmit a signal for idling the shaft 112 to the motor.

When the control device 120 idles the impeller 111 , the rotation driving unit 113 sets the predetermined maximum target RPM (RPM2, see FIG. 3) and the maximum target RPM (RPM2, see FIG. 3) to the arrival time t1 , see FIG. 3) and the target idle operation time (t1 to t2, see FIG. 3) may be driven in a manual mode or an automatic mode by an operator and/or manager in response to the impeller idle model (450). RPM1 (see FIG. 3 ) may be an existing RPM.

When the control device 120 idles the impeller 111, the rotation drive unit 113 (refer to FIG. 2) operates in a predetermined target idle operation time (t1 to t2, see FIG. 3) for a motor forward operation pattern or motor reverse operation In response to the impeller idling model including the pattern or the motor bidirectional operation pattern, it may be driven in a manual mode or an automatic mode by an operator and/or a manager ( 450 ).

As shown in Figure 6, when the impeller (111, see Figure 5) is idle, the slag (S, see Figure 5) attached to the impeller (111, see Figure 5) falls to the bottom, the slag is removed (460) ).

Figure 7 shows another example of the control system of the molten iron desulfurization apparatus according to an embodiment.

7, the control system 100 of the molten iron desulfurization device 110 is based on the slag image data of the camera 130 and / or the impeller weight detection data of the weight sensor 140 Idle rotation of the impeller 111 The molten iron desulfurization device 110 is controlled by the control device 120 to drop the slag (S, see FIG. 10 ) attached to the impeller 111 to the lower side by using the centrifugal force of the

The camera 130 may further acquire slag image data by photographing the slag (S, see FIG. 10 ) attached to the impeller 111 (refer to FIG. 10 ). The camera 130 may be provided outside the container (L). The present invention is not limited thereto, and the camera 130 may be provided at a position capable of photographing the impeller 111 (refer to FIG. 10 ) without being affected by high temperatures. The camera 130 may acquire slag image data in a specific time period. For example, the camera 130 may be a high-definition camera, and may be a CMOS camera or a CCD camera.

The weight sensor 140 may further acquire impeller weight detection data by sensing the weight of the impeller 111 (refer to FIG. 10 ) including the slag (S, see FIG. 10 ). The weight sensor 140 may be provided outside the shaft 112 . The present invention is not limited thereto, and the weight sensor 140 may be provided at a position capable of sensing the weight of the impeller 111 (refer to FIG. 10 ) without being affected by a high temperature. The weight sensor 140 may acquire a change amount of the impeller weight detection data in a specific time period.

8 shows a configuration of a control device according to an embodiment.

As shown in FIG. 8 , the control device 120 may include a processor 121 and a memory 122 .

When the processor 121 idles the impeller 111 to drop the slag (S, see FIG. 10) attached to the impeller 111 to the bottom, processing the slag image data obtained by the camera 130 In response, it is possible to further determine the impeller idle model including the maximum target RPM for driving the rotation driving unit 113, the time to reach the maximum target RPM, and the target idle operation time. The processor 121 selects an impeller idle model including a maximum target RPM set according to the amount of slag and a time to reach a maximum target RPM and a target idle operation time based on the obtained slag image data, and to the selected impeller idle model Correspondingly, the rotation driving unit 113 may be driven in a manual mode or an automatic mode by an operator and/or an administrator.

When the slag (S, see FIG. 10) falls to the bottom in response to processing the slag image data obtained by the camera 130, the processor 121 may further inform that the slag is removed. When the slag (S, see FIG. 10) falls to the bottom, the control device 120 may notify the operator and/or manager that the slag is removed through a pop-up message and/or a speaker on the screen. Operators and/or managers can quickly recognize that the slag is being removed, so that the initial response can be quick.

The processor 121 processes the impeller weight detection data obtained by the weight sensor 140 when the impeller 111 is idle to drop the slag (S, see FIG. 10) attached to the impeller 111 downward. In response to one, it is possible to further determine the impeller idle model including the maximum target RPM for driving the rotation drive unit 113, the time to reach the maximum target RPM, and the target idle operation time. The processor 121 selects an impeller idle model including a maximum target RPM set according to the weight value based on the obtained impeller weight detection data, a time to reach the maximum target RPM and a target idle operation time, and to the selected impeller idle model Correspondingly, the rotation driving unit 113 may be driven in a manual mode or an automatic mode by an operator and/or an administrator.

When the slag (S, see FIG. 10) falls to the bottom in response to processing the impeller weight detection data obtained by the weight sensor 140, the processor 121 may further inform that the slag is removed. When the slag (S, see FIG. 10) falls to the bottom, the control device 120 may notify the operator and/or manager that the slag is removed through a pop-up message and/or a speaker on the screen.

The processor 121 generates a signal for driving the rotation driving unit 113 according to the amount of slag and/or generates a signal for driving the rotation driving unit 113 according to a weight value and/or slag (S, FIG. 10 ) Reference) may include a micro control unit (MCU) that generates a notification signal for notification when it falls to the bottom.

The memory 122 generates a signal for driving the rotation driving unit 113 according to the amount of slag and/or generates a signal for driving the rotation driving unit 113 according to a weight value and/or slag (S, FIG. 10 ) ) may store a program and/or data for generating a notification signal for a notification when it falls to the bottom.

Figure 9 shows another example of the control method of the control system of the molten iron desulfurization apparatus according to an embodiment. 10 shows an operation of dropping the slag attached to the impeller downward. 11 shows a state in which the slag attached to the impeller is removed.

9 and 10 , the camera 130 may further acquire slag image data by photographing the slag S attached to the impeller 111 ( 441 ). The weight sensor 140 may further acquire impeller weight detection data by detecting the weight of the impeller 111 including the slag S ( 441 ).

The control device 120 rotates in response to processing the slag image data obtained by the camera 130 when the impeller 111 idles to drop the slag S attached to the impeller 111 downward. The impeller idle model including the maximum target RPM for driving the driving unit 113, the time to reach the maximum target RPM, and the target idle operation time may be further determined ( 450 ). The control device 120 selects an impeller idle model including a maximum target RPM set according to the amount of slag and a time to reach a maximum target RPM and a target idle operation time based on the obtained slag image data, and the selected impeller idle model In response, the rotation driving unit 113 may be driven in a manual mode or an automatic mode by an operator and/or an administrator. The rotation driving unit 113 may idle the shaft 112 while controlling the idle speed of the shaft 112 using a reducer and a motor. The control device 120 may transmit a signal for adjusting the idling speed of the shaft 112 to the reducer, and may transmit a signal for idling the shaft 112 to the motor.

When the control device 120 idles the impeller 111 to drop the slag (S) attached to the impeller 111 to the lower side, the impeller weight detection data obtained by the weight sensor 140 is processed in response to further determine the impeller idle model including the maximum target RPM for driving the rotation driving unit 113, the time to reach the maximum target RPM, and the target idle operation time (450). The control device 120 selects an impeller idling model including the maximum target RPM set according to the weight value, the time to reach the maximum target RPM and the target idling operation time based on the obtained impeller weight detection data, and the selected impeller idling model In response, the rotation driving unit 113 may be driven in a manual mode or an automatic mode by an operator and/or an administrator. The rotation driving unit 113 may idle the shaft 112 while controlling the idle speed of the shaft 112 using a reducer and a motor. The control device 120 may transmit a signal for adjusting the idling speed of the shaft 112 to the reducer, and may transmit a signal for idling the shaft 112 to the motor.

As shown in FIG. 11, when the impeller 111 (see FIG. 10) is idle, the slag (S, see FIG. 10) attached to the impeller 111 (see FIG. 10) falls to the bottom, and the slag is removed (460). ).

When the slag (S, see FIG. 10) falls to the bottom in response to processing the slag image data obtained by the camera 130, the control device 121 may further inform that the slag is removed (470). When the slag (S, see FIG. 10) falls to the bottom in response to processing the impeller weight detection data obtained by the weight sensor 140, the control device 120 may further inform that the slag is removed (470). When the slag (S, see FIG. 10) falls to the bottom, the control device 120 may notify the operator and/or manager that the slag is removed through a pop-up message and/or a speaker on the screen.

Such, the control system 100 of the molten iron desulfurization apparatus 110 can prevent the center of gravity of the impeller 111 from being changed, it is possible to prevent eccentricity from occurring. It is possible to prevent the shape of the rotor blades 111a of the impeller 111 from being damaged, and it is possible to maintain the stirring efficiency of the molten iron. Since it is possible to prevent the change in the eccentricity of the rotary blade (111a), there is no need to lower the speed of the motor according to the load force of the motor, it is possible to maintain the stirring efficiency of the molten iron. When removing the metal using a conventional fork crane breaker, it is possible to prevent in advance the occurrence of a rollover accident that occurs when the fork crane breaker deflects the metal.

Meanwhile, the disclosed embodiments may be implemented in the form of a recording medium storing instructions executable by a computer. Instructions may be stored in the form of program code, and when executed by a processor, may generate program modules to perform operations of the disclosed embodiments. The recording medium may be implemented as a computer-readable recording medium.

The computer-readable recording medium includes any type of recording medium in which instructions readable by the computer are stored. For example, there may be a read only memory (ROM), a random access memory (RAM), a magnetic tape, a magnetic disk, a flash memory, an optical data storage device, and the like.

The disclosed embodiments have been described with reference to the accompanying drawings as described above. Those of ordinary skill in the art to which the present invention pertains will understand that the present invention may be practiced in other forms than the disclosed embodiments without changing the technical spirit or essential features of the present invention. The disclosed embodiments are illustrative and should not be construed as limiting.

100: control system 110: molten iron desulfurization device
111: impeller 112: shaft
113: rotation driving unit 114: elevating driving unit
120: control unit 121: processor
122: memory 130: camera
140: weight sensor L: container
M1: molten iron M2: desulfurization agent

Claims (17)

Molten iron desulfurization device for desulfurizing molten iron using the rotational operation of the impeller and a desulfurization agent; and
After the desulfurization treatment is completed, when the impeller is raised to the upper part in a immersed state, the shaft connected to the impeller is rotated so as to drop the slag attached to the impeller to the lower part using centrifugal force due to the idle rotation of the impeller A control system of a molten iron desulfurization device comprising a control device including a processor for driving a rotating drive unit. According to claim 1,
The control device, the control system of the molten iron desulfurization device for driving the rotary drive unit before the slag is solidified while changing from a liquid state to a solid state. 3. The method of claim 2,
The control device, the control system of the molten iron desulfurization device for driving the rotary drive in a manual mode or an automatic mode in response to the impeller idle model including the predetermined maximum target RPM and the reaching time to the maximum target RPM and the target idle operation time . 4. The method of claim 3,
The control device, the molten iron desulfurization for driving the rotary drive unit in a manual mode or an automatic mode in response to the impeller idle model including a motor forward operation pattern or a motor reverse operation pattern or a motor bidirectional operation pattern for a predetermined target idle operation time the control system of the device. According to claim 1,
Further comprising a camera for obtaining slag image data by photographing the slag attached to the impeller;
The control device includes a processor for processing the obtained slag image data, and in response to processing the obtained slag image data, a maximum target RPM for driving the rotation drive unit and a time to reach the maximum target RPM; The control system of the molten iron desulfurization unit further determines the impeller idle model including the target idle run time. According to claim 1,
Further comprising a camera for obtaining slag image data by photographing the slag attached to the impeller;
The control apparatus includes a processor for processing the obtained slag image data, and in response to processing the obtained slag image data, when the slag falls to the bottom, the control system of the molten iron desulfurization apparatus further informs that the slag is removed. According to claim 1,
Further comprising a weight sensor for obtaining impeller weight detection data by sensing the weight of the impeller containing the slag;
The control device includes a processor for processing the obtained impeller weight detection data, and in response to processing the obtained impeller weight detection data, reaching a maximum target RPM and a maximum target RPM for driving the rotation drive unit The control system of the molten iron desulfurization unit further determines the impeller idle model including time and target idle run time. According to claim 1,
Further comprising a weight sensor for obtaining impeller weight detection data by sensing the weight of the impeller containing the slag;
The control device includes a processor for processing the obtained impeller weight detection data, and in response to processing the obtained impeller weight detection data, when the slag falls to the bottom, the control of the molten iron desulfurization device further informing that the slag is removed system. According to claim 1,
The molten iron desulfurization device,
a container for accommodating the molten iron and the desulfurization agent;
an impeller immersed in the vessel to stir the molten iron and the desulfurization agent;
a shaft connected to an upper portion of the impeller;
a rotation driving unit connected to the shaft to rotate the impeller according to a rotation operation of the shaft; and
The control system of the molten iron desulfurization device comprising a lift driving unit connected to the rotary drive unit for elevating the impeller in accordance with the elevating operation of the rotary drive unit. By the elevating driving unit connected to the rotary driving unit, by lowering the impeller connected to the rotating driving unit into the interior of the container for accommodating the molten iron, the impeller is immersed,
A desulfurizing agent is put into the inside of the container,
The molten iron is desulfurized by rotating the impeller by a rotation driving unit that rotates the shaft connected to the impeller to agitate the molten iron and the desulfurizing agent,
After the desulfurization treatment is completed, the impeller connected to the rotary driving unit is raised upward in a immersed state by the elevating driving unit,
A control method of a molten iron desulfurization apparatus comprising dropping the slag attached to the impeller to a lower portion by using a centrifugal force caused by idling of the impeller by a control device for driving a rotation driving unit for rotating the shaft. 11. The method of claim 10,
Dropping the slag attached to the impeller to the bottom is,
By the control device, before the slag changes from a liquid state to a solid state and solidifies, the control method of the molten iron desulfurization device is to drive the rotary drive unit. 12. The method of claim 11,
Dropping the slag attached to the impeller to the bottom is,
By the control device, the control of the molten iron desulfurization device that manually or automatically drives the rotary drive unit in response to the impeller idle model including the predetermined maximum target RPM and the time to reach the maximum target RPM and the target idle operation time Way. 13. The method of claim 12,
Dropping the slag attached to the impeller to the bottom is,
By the control device, in response to the impeller idle model including a motor forward operation pattern or a motor reverse operation pattern or a motor bidirectional operation pattern for a predetermined target idle operation time, the rotary drive is driven manually or automatically. Control method of desulfurization device. 11. The method of claim 10,
To further acquire slag image data by photographing the slag attached to the impeller by a camera,
By the control device in response to processing the obtained slag image data, determining the impeller idle model including the maximum target RPM for driving the rotation driving unit, the time to reach the maximum target RPM, and the target idle operation time Control method of the molten iron desulfurization device further comprising. 11. The method of claim 10,
To further acquire slag image data by photographing the slag attached to the impeller by a camera,
By the control device in response to processing the obtained slag image data, the control method of the molten iron desulfurization apparatus further comprising notifying that the slag is removed when the slag falls to the bottom. 11. The method of claim 10,
By detecting the weight of the impeller containing the slag by a weight sensor to further obtain impeller weight detection data,
By the control device in response to processing the obtained impeller weight detection data, to determine the impeller idle model including the maximum target RPM for driving the rotation driving unit, the time to reach the maximum target RPM, and the target idle operation time Control method of the molten iron desulfurization device further comprising that. 11. The method of claim 10,
By detecting the weight of the impeller containing the slag by a weight sensor to further obtain impeller weight detection data,
The control method of the molten iron desulfurization device further comprising notifying that the slag is removed when the slag falls to the bottom by the control device in response to processing the obtained impeller weight detection data.

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