KR200223208Y1 - Apparatus for controlling silicon for manufacturing molten steel - Google Patents

Abstract

The present invention relates to a deregulation control device for charter production, the present invention is to select a manual and automatic mode, the operation means for inputting the target deregulation amount; Position detecting means for sensing the standby position and the track position of the moving car 13, respectively; Basis weight detection means for detecting an amount of deregulation weighted by the vibro feeder 1 operating under control to the moving hopper; Moving car moving means for moving the moving car 13 of the moving hopper which is operated under control from a standby position to a track position; Level detecting means for detecting a low level of the moving hopper; The target deregulation amount is set through the operation means, and when the automatic mode is selected, the automatic mode is entered. When the standby position is detected by the position sensing means, the basis weight to the moving hopper is controlled based on the basis weight value of the basis weight detection means. And control means for controlling the input amount of deregulation from the moving hopper to the ladle until the low position detection by the level detecting means when the track position is detected by the position detecting means; An electric valve 24 for deregulating the moving car 13 to the ladle 9 by the control means; According to the present invention as described above, by controlling the deregulation automatically to stably manage the silicon (Si) contained in the molten iron by the quantitative input of the deregulation, to improve the quality and workability of the molten iron, The present invention relates to a deregulation control device for the manufacture of molten iron which can supply a good molten iron.

Description

Deregulation Control System for Charter Shipbuilding {APPARATUS FOR CONTROLLING SILICON FOR MANUFACTURING MOLTEN STEEL}

The present invention relates to a deregulation control device for molten iron manufacturing, and in particular, by controlling the deregulation automatically to stably manage the silicon (Si) contained in the molten metal by the quantitative input of the deregulation, the quality and operation of the molten iron The present invention relates to a deregulation control device for the manufacture of molten iron which can improve the properties and can supply a high quality molten iron.

FIG. 1 is a conventional deregulation facility system diagram. Referring to FIG. 1, generally, deregulation agent discharged to a loading hopper 2 (LODAING HOPPER) by a truck from a columnar (not shown) is a vibro feeder (not shown) ( VIBRO FEEDER) is transferred through the pipe conveyor (3) (PIPE CONVEYOR) in a certain amount, and the deregulation transferred in this way is the Y Damper (4) (Y according to the selection of the switch (SELECTOR SWITCH) on the operation panel (not shown) Stored in the batch hopper 10-1 through the DAMPER.

When the level meter 25 installed in the batch hopper 10-1 detects a HIGH signal, a belt conveyor 5 is started, and an air cylinder (not shown) attached to the wind damper 4 is provided. When the AIR CYLINDER is operated on the opposite side, the deregulator is discharged to the belt conveyor and discharged to the BATCH HOPPER located on the opposite side, and the storage is completed when the level meter 15a is HIGH.

In this way, the stored deregulator is cut out through the vibro feeder 1 of the batch hopper 10 until the level 25a of the moving hopper 13-2 (MOVING HOPPER) becomes high. 13-2) (hereinafter referred to as moving car 13).

In addition, the deregulator stored in the moving car 13 is an operation panel (not shown) installed in the field using a two-way motor 13-3 as a driving source through a rail 12a (RAIL) installed across a column (not shown). Is pushed to the direct injection chute 11 mounted on the ladle 9 (LADLE) by using a push button.

Subsequently, the manual valve 13-4 attached to the moving car 13 is opened to open the MANUAL VALVE, and an appropriate amount of deregulation is performed according to the silicon (Si) value transmitted from the analysis room and displayed on the blast furnace monitoring screen. The amount of molten iron in the de-lease ladle (9) is poured into the ladle (9) (LADLE) by the by-products generated during deregulation and reaction with silicon (Si) in the molten iron, so it is only safe and proper level of 250Ton. Be repaired

However, in the conventional deregulation control method for manufacturing molten iron, since the inlet valve 13-4 of the moving car 13 is manual and does not have a basis weight, the deregulation for the production of molten iron for [P] is quantitative. Since it is impossible to insert, there is a problem in that the quality of the molten iron is reduced, and the distance between the moving unit 13 and the field operation unit and the direct shot shooter 11 is a long distance, and the moving car 13 and the direct shot shooter 11 Location control is not done correctly, there is a problem that the environment is polluted by the outflow of deregulation and the work load is increased by manual operation

The present invention was devised to solve the above problems, and therefore, the object of the present invention is to automatically control the deregulation so that the silicon (Si) contained in the molten iron can be stably managed by the quantitative input of the deregulation, In order to improve the quality and workability of the molten iron and to provide a high quality molten iron to provide a deregulation control device for the molten iron manufacturing.

1 is a conventional desulfurization facility system diagram.

Figure 2 is a block diagram of a deregulation control device for the molten iron manufacturing according to the present invention.

3 is an explanatory diagram of operation of the apparatus of FIG. 2 in the automatic mode.

4 is an operation flowchart of the present invention.

Explanation of symbols on the main parts of the drawings

1: VIBRO FEEDER 2: Loading Hopper,

10: BATCH HOPPER 11: CHUT,

12: rail 13: moving car

13-2: MOVING HOPPER 13-3: Two-way Motor

BATCH HOPPER LEVELLER

20: basis weight detection means 21: box (BOX)

24: electric valve (VALVE) 25: level detection means

26: position detecting means 40: output means

41: operation means 41a: mode setting key

41b: input key 100: control means

As a technical means for achieving the above object of the present invention, the deregulation control device for charter production of the present invention is selected from the manual and automatic mode, the operation means for inputting the target deregulation amount; Position sensing means for sensing the standby position and the track position of the moving car, respectively; Basis weight detection means for detecting an amount of deregulation weighted to a moving hopper by a vibro feeder operating under control; Moving car moving means for moving the moving car of the moving hopper operating under control from a standby position to a track position; Level detecting means for detecting a low level of the moving hopper; The target deregulation amount is set through the operation means, and when the automatic mode is selected, the automatic mode is entered. When the standby position is detected by the position sensing means, the basis weight to the moving hopper is controlled based on the basis weight value of the basis weight detection means. And control means for controlling the input amount of deregulation from the moving hopper to the ladle until the low position detection by the level detecting means when the track position is detected by the position detecting means; An electric valve for inputting deregulation of the moving car to the ladle by the control means; Characterized in having a.

Hereinafter, with reference to the accompanying drawings, a deregulation control apparatus for manufacturing a molten iron according to the present invention will be described in detail. In the drawings referred to in the present invention, components having substantially the same configuration and function will use the same reference numerals.

Figure 2 is a block diagram of the deregulation control device for the molten iron production according to the present invention, Figure 3 is an explanatory view of the operation of the device of Figure 2 in the automatic mode.

2 and 3, the deregulation control device for the charter production according to the present invention is to select the manual and automatic mode, the operation means 41 for inputting the target deregulation amount, and the moving car 13 A position detection means 26 for detecting a standby position and a track position of the ground, and a basis weight detection means 20 for detecting an amount of deregulation weighted to a moving hopper by a vibro feeder 1 operating under control; Moving car moving means for moving the moving car 13 of the moving hopper operating under control from a standby position to a track position, a level detecting means 25 for detecting a low level of the moving hopper, and the operation means ( 41) set a target deregulation amount and enter the automatic mode when the automatic mode is selected, and when the standby position is detected by the position detecting means 26, the basis weight to the moving hopper based on the basis weight value of the basis weight detecting means. Control by the position sensing means When detecting the position of the track, the control means 100 for controlling the amount of deregulation of the moving hopper from the moving hopper to the ladle until the low level detection by the level detecting means 25, and the moving car 13 by the control means 100 It includes an electric valve 24 for deregulation of) into the ladle (9).

The deregulation control apparatus for manufacturing the molten iron further includes an output means 40 for outputting a control state and a detection state to a screen, and the control means is configured to control the screen output for the control state and the detection state.

The operation means 41 is a key input device including an input key 41a for inputting a target deregulation amount, and a mode selection key 41b or a selection switch for selecting a manual mode or an automatic mode.

The position detecting means 26 cuts a rail 12a (RAIL) installed for moving the moving car 13 below the moving car 13 to a moving position of the moving car 13 (MOVING CAR). The moving car 13 has the rail 12b in which the wheels 13-5 are raised at regular intervals. That is, the moving car on which the moving hopper is mounted is moved on the rail 12a (RAIL), on which the limit switch 26a for detecting the position of the placement hopper, that is, the standby position, and the direct input chute (upper part of the ladle 9) CHUTE) includes limit switches 26b and 26c for sensing a position, that is, a line position.

Specifically, the moving car 13 welds the inverted protrusions 22b and 22c with the steel plate to facilitate the contact with the limit at a position where the moving hopper 10 is in line with the placement hopper 10 and moves the moving car 13. Attach the limit switch 26a for the standby position, and move the rails 12c with the? -Shaped protrusions 22b and 22c on the steel plate so that the moving car 13 and the direct-action shooter 11 (CHUTE) can be positioned in a straight line. We can check whether the limit switches 26b and 26c and the ladle 9 are in the right position (borrowed) on both sides of the lower side of the moving car, which contacts and stops the moving car 13 when the moving car 13 is moved by welding to both sides. The limit switch 7 is attached.

The basis weight detecting means 20 detects an amount of basis weight from the batch hopper to the moving hopper, converts the detected signal into a digital value and provides the control means to the control means so that the rail 12b (RAIL) is attached to the iron plate 23. It is fixed at regular intervals on both sides, and the basis weight can be up to 20 tons under the fixed iron plate 23, has an error range of 10Kg, and has its own converter (not shown). It consists of a basis weight corresponding to the load cell (load cell) to convert to a number.

The moving car moving means includes a rail 12a, wheels 13-5 of the moving car 13 moving on the rail 12a, and wheels 13- of the moving car 13 of the rail 12a. And a motor 13-3 which rotates 5) according to the control of the control means 100.

The control means 100 is configured to control the screen display to be distinguishable by detection state, specifically, for example, green when the moving car 13-1 (MOVING CAR) is in the standby position, Red when disengaged, pink when limit switches 26b and 26c are operated, target basis weight value and actual basis weight value are numerical values, red when motor valve 24 is open and closed. It outputs green at time and yellow at failure.

The electric valve is installed at the lower end of the center of the moving hopper 13, and the opening degree can be adjusted from 0 to 100%, is opened when the limit switches 26b and 26c are detected, and the moving car level detection means 25 is detected. CLOSE motorized valve (24).

The output means is green when the moving car 13-1 (MOVING CAR) is in the standby position, red when leaving the standby position, pink when the limit switches 26b, 26c are operated, and the target basis weight value. And the actual basis weight value as a numerical value, and outputs a red color when opening the electric valve 24, a green color when closing, and a yellow color when a fault occurs.

4 is an operation flowchart of the present invention.

Operation according to the device of the present invention configured as described above will be described in detail below based on the accompanying drawings.

Referring to Figures 2 to 4 to explain the operation of the deregulation control device for the molten iron production according to the present invention, the mode (MODE) selection key 41a of the input equipment operating means 41 is automatically selected (AUTO) Then, the control means 100 recognizes this and enters the automatic mode, after which the moving car 13 (MOVING CAR) is in the standby position (position where the batch hopper 10 and the moving car 13 coincide). The limit switch 26a of the position detection means detects and provides it to the control means 100. According to the control of the control means 100, the output car 40 indicates that the moving car 13 is in the standby position. Green is displayed in step S51 of FIG. 3.

Then, the control means 100 operates the vibro feeder 1 (VIBRO FEEDER) of the batch hopper (BATCH HOPPER) 10, when the silicon (Si) is included in the setting range 0.21% -0.40%, In the batch hopper 10, deregulation is introduced into a moving hopper of a moving car. At this time, a basis weight, which is a basis weight detection means of the moving hopper, detects a basis weight and provides the control means to the control means. The vibro feeder 1 (VIBRO FEEDER) is operated until the detection plane value corresponds to the target deregulation amount while comparing the detection basis weight value with the target deregulation amount set in advance (steps S52 and S53 of FIG. 3). The target deregulation amount is shown in Table 1 below.

Melting line Si (%) Si (%) difference Deregulation input I'm after kg / T-P T / TLC 0.20 0.15 0.05 7.3 1.8 0.21 0.15 0.06 8.0 2.0 0.22 0.15 0.07 8.8 2.2 0.23 0.15 0.08 9.5 2.4 0.24 0.15 0.09 10.3 2.6 0.25 0.15 0.10 11.2 2.8 0.26 0.15 0.11 12.0 3.0 0.27 0.15 0.12 12.9 3.2 0.28 0.15 0.13 13.8 3.5 0.29 0.15 0.14 14.7 3.7 0.30 0.15 0.15 15.7 3.9 0.31 0.15 0.16 16.7 4.2 0.32 0.15 0.17 17.7 4.4 0.33 0.15 0.18 18.8 4.7 0.34 0.15 0.19 19.8 5.0 0.35 0.15 0.20 20.9 5.2 0.36 0.15 0.21 22.1 5.5 0.37 0.15 0.22 23.2 5.8 0.38 0.15 0.23 24.4 6.1 0.39 0.15 0.24 25.6 6.4 0.40 0.15 0.25 26.9 6.7

Then, when the basis weight of the target deregulation amount is completed in the moving hopper of the moving car, the control means 100 controls the moving car moving means to move the moving car to the rail position, that is, to the ladle position on the direct input chute. This means that when the moving car reaches the track position, the position detecting means detects it and provides it to the control means 100, and the control means recognizes the moving car through the moving car moving means to stop the moving car (Fig. 3). Step S54).

At this time, the control means is to open the electric valve 24 to input the deregulation of the moving hopper of the moving car to the ladle. At the same time, when the amount of deregulation in the moving hopper is lower than the level detecting means 25 previously installed, the level detecting means detects and provides the control means to the control means. Accordingly, the control means 100 provides the electric valve 24. By closing the input to the ladle is completed (step S55 of Figure 3).

On the other hand, the comparative data for coral (O2) and molten iron (Si) in the MILL SCALE is shown in Tables 2, 3 and 4.

Reaction formula of MILL SCALE and silicon in molten iron Si + 02 = Si02 Molecular Weight Si: 28 02:32

Si weight (kg) 02 weight (kg) 02 content (%) When 0.01% of Si in 1 ton of molten iron 0.1 0.114 When 0.01% of Si in 250 ton of molten iron 25 About 28.5 MILL SCALE in 1 ton 224 (reaction amount 112) 22.4 (Reaction amount 11.2)

Use of thread at 250 tons 02 02 amount reacted with Si Reaction efficiency 395.18 kg 194.286 kg About 50%

According to Tables 2, 3 and 4, since the deregulation efficiency is 50%, it is possible to burn 112 kg of silicon (Si) with one ton of deregulation. When the amount of silicon (Si) in one ton of molten iron is 0.01%, the amount of silicon (Si) is 0.1 Kg. When the amount of silicon (Si) in the 250 tons of molten iron is 0.01%, it has 25 kg of silicon (Si). If the amount of silicon (Si) is based on 0.15%, the difference in amount of silicon (Si) is 0.10% if the current amount of silicon (Si) is 0.25%. For example, when the amount of molten iron is 250 ton and the amount of silicon (Si) is 0.10%, the control means 100 checks the position of the moving car by the position detecting means.

When the vibrating feed 1 is operated to the control means in accordance with the amount of silicon (Si), and the target amount is transmitted from the basis weight detection means to the control means 100, the moving car 13 ( When the basis weight is completed in the moving car, deregulation is applied to the ladle 9-1 when the protrusion 22c of the vibrating feeder 1 and the limit switch 26c of the batch hopper 10 come into contact with each other. The input is completed as shown.

When the input is completed as described above, the moving car is retracted to the standby position (step S56 of FIG. 3), and these operations are made in one process, and the operation is repeated automatically from starting point of departure (time point of chartering out of the blast furnace) to end of line. To control the amount of deregulation.

According to the present invention as described above, by adopting the remote automatic operation in the cab to work that was dependent on manual operation in the field to protect the operator from high heat and dust, improve the quality of the molten iron by the quantitative input of deregulation and monitoring with the output unit It is effective to manage the facility more efficiently by managing, monitoring and controlling it through the operation screen of the columnar deregulation facility.

The above description is only a description of an embodiment of the present invention, and the present invention is capable of various changes and modifications within the scope of its configuration.

Claims (3)

Operating means for selecting manual and automatic modes and inputting a target deregulation amount; Position detecting means for sensing the standby position and the track position of the moving car 13, respectively; Basis weight detection means for detecting an amount of deregulation weighted by the vibro feeder 1 operating under control to the moving hopper; Moving car moving means for moving the moving car 13 of the moving hopper which is operated under control from a standby position to a track position; Level detecting means for detecting a low level of the moving hopper; The target deregulation amount is set through the operation means, and when the automatic mode is selected, the automatic mode is entered. When the standby position is detected by the position sensing means, the basis weight to the moving hopper is controlled based on the basis weight value of the basis weight detection means. And control means for controlling the input amount of deregulation from the moving hopper to the ladle until the low position detection by the level detecting means when the track position is detected by the position detecting means; An electric valve 24 for deregulating the moving car 13 to the ladle 9 by the control means; Deregulation control device for the molten iron manufacturing characterized in that it comprises a. According to claim 1, Deregulation control device for the molten iron manufacturing Output means for outputting a control state and a detection state to a screen; Further provided, And the control means controls the screen output for the control state and the detection state. The method of claim 2, wherein the control means Deregulation control device for the molten iron manufacturing, characterized in that configured to control the display to be distinguishable by detection status.