KR100919025B1 - Apparatus for penetration of molten iron outlet in blast furnace - Google Patents

Abstract

The present invention when excavating the blast furnace exit closed with mud material through the opening machine, and excavating only to the depth of the solidification of the solidified water with the mud material, and retreating the opening machine and melt-dried the molten water solidified by the melt excavator, The present invention relates to an automatic excavation control device by detecting a metal component inside a blast furnace exit that automatically performs retreating the molten excavator and re-excavating it back into an open hole when melt excavation is completed.

In the present invention, the height adjustment cylinder 27 and the auxiliary cylinder 28 is installed on the base plate 20, which is movable by the wheel 21, the angle adjustment cylinder 33 is attached to the support plate 34, An auxiliary plate 36 operated by a hydraulic cylinder 37 is installed below the plate 34, and a cylinder 58 with a metal component detector 59 is installed at the side of the outlet 15. A process computer 60 for converting the air 15 excavation distance and the metal buried depth and a control unit 61 for controlling the mutual control and operation of the apparatus are installed. By providing an automatic excavation control device.

Description

Melting Excavator at Blast Furnace Exit {APPARATUS FOR PENETRATION OF MOLTEN IRON OUTLET IN BLAST FURNACE}

1 is a discharge state of the blast furnace,

Figure 2 is a state in which waste water is mixed into the mud material when the blast furnace outlet closing;

3 is a view showing a phenomenon that the bit is damaged due to the solidified water during excavation of the conventional exit port,

Figure 4 is a drilling excavation solidified inside the conventional exit port,

5 is a schematic of the overall configuration of the apparatus according to the present invention;

6 is a side view of the main portion of the apparatus according to the present invention;

7 is a detailed front view of the main portion of the apparatus according to the present invention;

8 is an operating state diagram of the metal component detecting means of the present invention;

9 is an operating state of the apparatus for melt-excavating the solidified water inside the tap opening in the present invention,

10 is an operational flowchart of the present invention.

Explanation of symbols used in the main part of the drawing

11: blast furnace 12: exit 13: molten iron

14 closing machine 15 opening machine 16 opening machine excavation motor                 

17: iron core 18: proximity switch 19: large bath

20: base iron plate 21: wheel 22: motor

23: hydraulic tank 24: hydraulic motor 25: hydraulic distribution valve

27: height adjustment cylinder 29: rotary hydraulic motor 30: square box

31: pin 32: body 33: angle adjustment cylinder

34: plate 35: feeding motor I 36: auxiliary plate

37 back and forth cylinder 38 guide pipe 39 spring

40: feeding motor II 41: support 44: cover

45: connecting pin 46: fixed iron plate 47: pressure gear

48: pressure gear 49: feed gear 50: feed gear

51: rotary motor shaft 52: power transmission gear

53 control panel 54 electromagnetic valve 55 oxygen pipe

56: thermometer 57: thermometer iron core 58: cylinder

59: Metal Detector 60: Process Computer
61 control unit 65 protection cover

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66: solidified water 67: mud material 68: closure position detector

69: oxygen pipe drum 70: power transmission gear 71: power transmission gear

72: the chain

The present invention relates to an improvement of an apparatus for excavating a closed material applied to an exit opening for discharging wastewater from a blast furnace. The present invention relates to a metal inside a blast furnace opening opening which can automatically control excavation control by detecting solidified water inside the closing material. The present invention relates to a melt drilling apparatus by component detection.

In general, in blast furnace operation, iron ore and coke used as lead and raw materials are charged into the blast furnace, and coal is crushed and blown into the blast furnace with pulverized coal, and coke and pulverized coal are burned by high temperature hot air to produce reducing gas. Will be reduced. The molten iron that is slowly reduced in the blast furnace is melted at the bottom of the blast furnace, and the molten water, which is a molten material produced at the bottom of the blast furnace, is opened through the opening process of opening the blast furnace outlet with an open bar equipped with iron bars and bits. The slag is discharged out of the blast furnace by the pressure inside the blast furnace.

The slag is separated and discharged to the top of the skimmer by the difference in specific gravity, and the heavy water is separated into the lower part of the skimmer and repaired to the chartered car through the passage.

On the other hand, the slag separated into the upper skimmer is processed by the water treatment facility to atomize with the aggregate treatment apparatus through the slag passage.

Then, after the completion of the departure, the worker sees that the hot air and the melt that have flowed into the blast furnace through the tuyere are ejected together (hereinafter referred to as `` blowing '') as the melt level drops to the lower side of the exit. The closure is joined to the outlet so that the interior of the outlet is sealed with mud material from the closure.                         

In the above process, when the mud material is encapsulated inside the exit port with the closing device, the mud material is mixed with the residual metal and encapsulated.

Accordingly, when the tap hole excavation work is performed with the bit mounted on the opening to perform the next tap line, the bit is worn out due to the solidified water as shown in the example of FIG. This is happening frequently.

In addition, the molten material discharged from the exit port is temporarily stored, and the molten water is solidified in the remnant treatment opening when the molten metal and slag are separated. There has been frequent work to be done.

Conventionally, as a countermeasure against the above phenomenon, retreat the open air, connect the oxygen hose to the oxygen pipe, and then fasten the oxygen opening pipe to the rubber hose and insert it into the exit port. The method of melting and opening was used (see Fig. 4).

However, this conventional method has the following problems.

First, it is impossible to confirm that the molten material and the mud material are mixed and sealed together at the closing of the exit port, and thus, due to the above-described failure of opening and reopening, the melt discharge delay occurs. There is a problem in that the reduction caused the windage and the production decreases according to the windbreak.

Second, in high temperature radiant heat and high-pressure oxygen pipe by hand, the operator directly inserts into the exit port and excavates by manual work, which increases the workload and increases the risk of safety accidents. will be.

The present invention has been made to solve the above-mentioned problems, and by detecting the blast furnace outlet metal component to detect the solidified water early in the closed exit port so that the corresponding optimum excavation can be automatically performed. It is an object of the present invention to provide a melt excavation apparatus by detecting a metal component inside a blast furnace outlet.

As a technical means for achieving the above object, the present invention includes a moving part having a urethane heat-resistant wheel 21 which can be moved by mounting the motor 22; A motor 29 that rotates the height adjusting cylinder 27 and the auxiliary cylinder 28 and the body 32 that move up and down 360 degrees, and a hydraulic motor 24 that powers the angle adjusting cylinder 33 and the open gauge. A control unit made of; Feed gears 50 and 49 and pressurizing gears 47 and 48 for supporting and conveying an oxygen pipe, and power transmission gears 52, 70 and 71 and support 41 and also the transfer gear 50. Feeding part consisting of a feeding motor I (35) for rotating), an oxygen pipe drum (69), a feeding motor II (40) for rotating it, a guide pipe (38), and a cylinder (37) for advancing the auxiliary plate (36). Wow; Provided is a melt excavation apparatus by detecting a blast furnace outlet metal component, which comprises a control unit 61 for mutual control of the control unit and the supply unit.
Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

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As shown in FIG. 6, the present invention has a base iron plate 20 for supporting the related apparatus, and a urethane heat-resistant wheel 21 is attached to each corner of the lower portion of the base iron plate 20, and the base iron plate ( 20) The motor 22 is installed on the upper side.

In addition, a hydraulic tank 23 is provided above the iron plate 20, and a hydraulic motor 24 and a hydraulic distribution valve 25 are provided above the hydraulic tank 23.

The other side of the upper side of the iron plate 20 is installed a sealed rectangular box 26, the height adjustment cylinder 27 and the auxiliary cylinder 28 is installed in the box 26, the height adjustment cylinder (27) A rectangular box 30 is attached to the rod upper part of the rod 30, and a rotary hydraulic motor 29 is embedded in the box 30, and an oxygen pipe supply body 32 is attached to the rotary hydraulic motor 29 shaft 51. Install.

An oxygen pipe supply body 32 and an angle adjustment cylinder 33 are attached to the box 30, and a support plate 34 is attached to the rod of the angle adjustment cylinder 33.

The oxygen pipe supply body 32 is connected to the shaft 51 and the pin 31 of the rotary hydraulic motor 29 so that the rotation can be freely adjusted, and welded plate 34 on the upper body 32 The guide pipe 38 is installed at the rear end of the upper part of the plate 34, and the support 41 is attached to the upper part of the upper part of the plate 34.

Then, the feeding motor I 35 is installed on one side of the body 32 and attaches the power transmission gear 52 to the feeding motor I 35 shaft. In addition, the transfer gear 50 is installed to be coupled to each other and the power transmission gear 52 of the feeding motor I (35) shaft, coupled to the pressure gear 47 installed on the transfer gear 50, the transfer gear 50 ) Install the transfer gear 49 at the front part, and install the pressure gear 48 at this. A power transmission gear 70 is connected to the power transmission gear 52 shaft, and a power transmission gear 71 is installed on the transmission gear 49 shaft. The power transmission gear 70 and the power transmission gear 71 are provided. Are connected to the chain 72. Such a device is installed inside the lid 44.

Furthermore, the iron core 17 is attached to the drilling motor 16 shaft of the opening machine 15, and the proximity switch 18 is installed in front of the drilling motor 16 shaft.

In addition, an oxygen pipe drum 69 is provided above the base iron plate 20, and a feeding motor II 40 for driving the same, a thermometer 56 for detecting a temperature, and a thermometer iron core 57 are installed.

A cylinder 58 is attached to the side of the outlet 12, and a metal detector 59 is attached to the rod of the cylinder 58.

Further, a process computer 60 for converting the excavation distance conversion and the metal component embedding depth is configured, and the control unit 61 for mutual control and operation of all the above-described devices is provided.

In operation, the worker confirms the tapping of the tapping holes 12, takes out the radiant heat preventing hot water cover, and closes the taping holes 12 with the closure 14, and at the same time, the mud material is sealed.

After a certain time has elapsed, as the sealed mud material is fired, the closure 14 is retracted and seated at a predetermined position.                     

Then, the control unit 61 operates the electromagnetic valve to operate the cylinder 58 with the metal component detector 59 attached thereto, and the cylinder 58 moves forward in front of the outlet port 12 and stops at the outlet outlet point. When the control unit 61 turns on the metal component detector 59 of the ground penetrating radar, electromagnetic waves are emitted therefrom, and the presence of the metal component disturbs the entire ROUND TRIP path. (INTERUPTION) is detected by inspection. The distance between the detector and the metallic object is measured by using the time delay Δt between the emission and reception of the signal as follows.

R = (V / 2) △ t

Where V is the acceleration of the electromagnetic wave in the mud material and R is the distance from the detector to where the metal is embedded.

The above formula calculates the distance from the process computer 60 using the electromagnetic wave speed and time, and the calculated value is transmitted to the controller 61.

On the other hand, when the tapping port is out of line, turning the opening machine 15 for the excavation work of the closed tapping opening 12, and then advances the bit to the motor 16, in which the motor 16 is attached to the shaft Whenever the iron core 17 rotates together and approaches the proximity switch 18, the proximity switch 18 detects it. Therefore, the number of times of detection is transmitted to the process computer 60, and the following formula is established.

S = n × s

Here, S is the total opening distance of the open air bits, n is the number of proximity switch detection, s is the bit movement distance when the iron core rotates once.

Therefore, with the value measured by the metal component detector 59, it is remembered at which point the metal component inside the exit port 12 is solidified, i.e., how many meters inside the entrance port 12 is solidified, 15) When the bit reaches the point where the metal component is present when excavating the inside of the outlet 12, the control unit 61 shuts off the motor 16 of the opening machine 15 and activates a warning light.

Then, when the worker retracts the opening machine 15 and the correct position switch is operated, the control unit 61 operates the welding excavator angle adjusting cylinder 33 to automatically stop when the set angle is reached. Then, the control unit 61 turns on the feeding motor I 35 and the feeding motor II 40 and the forward and backward cylinder 37 is operated to advance the auxiliary plate 36.

When the power transmission gear 52 rotates while the feeding motor I 35 and the feeding motor II 40 rotate, the oxygen pipe transfer gear 50 and the pressurizing gear 47 rotate together, and the power transmission gear 5 The power transmission gear 70 is connected to the same as rotating the power transmission gear 71 to the chain 72 while rotating together.

Accordingly, the oxygen pipe 55 is pressurized with the transfer gears 50 and 49 while the oxygen pipe transfer gear 49 connected to the power transmission gear 71 rotates together and the pressure gear 48 also rotates together. The oxygen pipe 55 in the drum 69 rotated by the feeding motor II 40 is inserted continuously between the gears 47 and 48 and inserted into the outlet opening 12. Then, the control unit 61 determines that the solidified water is currently being melted by detecting the heat transmitted to the thermometer iron core 57 mounted inside the oxygen pipe 55 by the thermometer 56.

When the feeding motors 35 and 40 operate as described above, when the oxygen pipe 55 is continuously supplied and the solidified molten water is completely melted, the temperature delivered to the thermometer iron core 57 drops. That is, the temperature of the solidified molten metal melt is sensed to be high, and the solidified molten metal melt is completed and the temperature of the mud material melted is determined by sensing the temperature.

When the temperature of the thermometer 56 is transmitted and it is determined that the molten water solidified by the controller 61 is completed, the operation of the feeding motor 35 and 40 is stopped, and the supply of the oxygen pipe 55 is also stopped.

Then, the control unit 61 reverses the cylinder 37 to reverse the auxiliary plate 36, and the angle adjusting cylinder 33 is returned to the original angle. Then, by turning the opening machine 15 again, the molten material is discharged through the excavation hole 12 completely through the bit.

In addition, in the excavation work of the remnant processing closure 12 for the melt residue treatment of the molten metal 19, when the power is first supplied to the metal detector 59 by the control unit 61, the electromagnetic wave is emitted to confirm the presence of the metal component. The distance to the metal component is calculated by the process computer 60.

Subsequently, when the command is transmitted from the process computer 60 to the control unit 61, the height adjusting cylinder 27 of the melt excavator is lowered to a constant height, and the rotary hydraulic motor 29 is operated to the remnant closing opening 12. Rotate slowly and stop.

Then, when the angle adjustment cylinder 33 is operated to reach the set angle, it stops and waits, and the subsequent excavation operation is performed as described above.

Figure 10 shows the overall workflow of the present invention described above.

Therefore, according to the present invention as described above it can be easily and quickly excavated removal of the sealing material inside the pit of the excavation target closure of the blast furnace, thereby minimizing the melt discharge delay or interruption can reduce the operation delay and contribute to the improved production.

In addition, according to the present invention, the desired excavation work is carried out safely and quickly by automated work, not by manual work, thereby reducing the manpower required for such excavation work and preventing safety accidents.

Claims (1)

In the device for melting and excavating solidified water at the opening of the blast furnace opening, The height adjustment cylinder 27 installed on the base plate 20 movable by the wheel 21, the auxiliary cylinder 28 installed on the side of the height adjustment cylinder 27, and installed above the height adjustment cylinder 27 An adjusting unit including an angle adjusting cylinder 33 installed on an upper portion of the rectangular box 30; Oxygen pipe drum 69 for supplying the oxygen pipe installed on the base iron plate 20, the body 32 installed on the upper side of the height adjustment cylinder 27, the upper side of the body 32 and the angle adjustment A supply unit comprising a plate 34 connected to the cylinder 33, an auxiliary plate 36 attached to the lower portion of the plate 34, and a forward and backward cylinder 37 attached to the lower portion of the auxiliary plate 36; A sensing unit made of a metal detector 59 movable by the cylinder 58 and attached to the side of the outlet 15; A conversion unit for converting the excavation distance and the metal component burial depth of the opening machine 15 according to the signal detected by the detection unit; Melting apparatus of the blast furnace outlet characterized in that it comprises a control unit 61 for controlling the mutual operation of the supply unit, the adjusting unit, the sensing unit and the conversion unit.

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