KR20010059581A - Apparatus for providing the prohibiting foaming agent - Google Patents

Abstract

PURPOSE: An apparatus for supplying a foaming inhibitor is provided to control foaming phenomena generated during desiliconization operation in which a content of silicon (Si) is reduced among various impurities contained in the molten iron produced in a blast furnace by directly injecting the foaming inhibitor in side a TLC (Torpedo Ladle Car), a vehicle for transferring melted iron, and controlling an amount of a desiliconizer injected. CONSTITUTION: In a supplying apparatus for injecting a foaming inhibitor into a TLC in which hot metal tapped through a tap hole of a blast furnace is received, the apparatus for supplying a foaming inhibitor comprises at least two or more storage hoppers (21a,21b) separately storing the foaming inhibitor by classifying the foaming inhibitor per particle sizes; supply hoppers (44a,44b) at the inside of which a weight measuring instruments are installed so as to measure a weight of a foaming inhibitor that is discharged from the storage hoppers and temporarily stored; and a supplying pipe (62) for guiding to the TLC (16) the foaming inhibitor discharged from the storage hoppers.

Description

Foaming Inhibitor Supply {Apparatus for providing the prohibiting foaming agent}

The present invention relates to a foaming inhibitor supply device for controlling the foaming phenomenon generated during the desulfurization operation to reduce the content of silicon (Si) in the impurities produced in the blast furnace, in particular, The present invention relates to a foaming inhibitor supplying device capable of directly injecting a foaming inhibitor into a TLC and controlling an amount of deregulation.

In general, the molten water produced in the blast furnace, as shown in Figures 1 and 2, separated by a specific gravity difference in the large bath, flows along the jitangdo 14, and can be tilted at a certain angle left and right Via (15), it is repaired inside the TLC (topedo ladle car), a molten water transport vehicle on both sides of the track, and supplied to the steel mill, which is a post-process.

As described above, a large amount of dust generated during the repair of the water into the TLC 16 from the raceway 15 is collected by the dust collector dam 17 installed at one side of the space between the raceway and the TLC.

The waste water produced in the blast furnace contains many kinds of impurities that greatly affect the production of high-quality products in the post process. Among them, silicon (Si) has to be treated immediately after starting the ship, that is, at a high temperature, so that the water repair vehicle During the repair, a certain amount of deregulator 11 is directly injected into the water repair vehicle 16.

In addition, the content of silicon is reduced by the reaction with the deregulator, and the reaction formula is as follows.

(Si) + FeO → SiO ₂ + 2Fe

At this time, the hot water is repaired by the foaming phenomenon generated by the bubble phenomenon generated when carbon (C) in the water reacts with oxygen to pass through the slag layer while generating CO and CO ₂ gas during de-silification work. It overflows to the outside of the vehicle 16, which causes a large amount of wires to cause damage to the surrounding equipment and a large fire.

In addition, this prevents emergency recovery operations and normal operations, so the production of water has to be temporarily suspended.

Also, as shown in FIG. 2, the foaming inhibitor directly injected into the inside of the TLC 16 is divided into the fixed inhibitor 11 having a constant particle size, that is, a size of 10 to 40 mm, together with the fine powder 12 having a particle size of 1 mm or less. .

According to the conventional embodiment, in order to inject it, it is necessary to perform manual work (shovel) by the equipment (loader) 13 or manpower, and in particular, the input amount is judged by the operator's experience, and is frequently input at a certain place on the upper part of the raceway. Inefficient work is being done along with the physical load caused by the manual work.

Therefore, the problems occurring during the forming inhibitor input operation as described above are as follows.

A position of about 10m high, that is, the foaming inhibitors 11 and 12 in the upper part of the raceway 15 are dropped by the human hand and the equipment (loader) 13 is dropped into the TLC 16 and the inside of the ball, and the dropping is performed. All of the amount is not introduced into the TLC, some of which are sucked in by the dust collector 17, and some of it is poured out of the TLC crater and is lost.

In addition, by controlling the input amount according to the operator's experience, a large amount of waste water flows from the inside of the TLC 16, which is the water repair difference, in the forming phenomenon caused by the reaction between the waste water and the deregulation, to the outside. Load factors causing damage and large fires are frequently generated.

The present invention has been made to solve the conventional problems as described above, forming a suitable amount of deregulation in accordance with the amount of (Si) contained in the waste water and is added to prevent foaming after a certain period of time By classifying the inhibitors by particle size and controlling the input and input amount by remote control, it prevents expensive foaming inhibitors from being lost outside the dust collector and TLC sphere, and prevents damage of surrounding equipment. The purpose is to provide a foaming inhibitor supply device so that the production can be smoothly supplied to the next process.

According to the present invention, in order to achieve the above object, the supply device for injecting the forming inhibitor into the TLC in which the molten iron is repaired through the outlet of the blast furnace is at least two storage to separate and store the forming inhibitor by particle size And a feed hopper having a built-in hopper for measuring the weight of the forming inhibitor to be temporarily stored and discharged from the storage hopper, and a supply pipe for guiding the forming inhibitor to be discharged from the supply hopper to the TLC. It features.

1 is a view illustrating a state in which a deregulator is introduced into a TLC according to a conventional embodiment.

2 is a view showing a state in which a foam inhibitor is added to the TLC according to another embodiment.

3 is a view schematically showing a forming inhibitor supply apparatus according to an embodiment of the present invention.

Figure 4 is a schematic view showing the input of the foaming inhibitor supply apparatus according to an embodiment of the present invention.

FIG. 5 is an enlarged view of a portion A shown in FIG. 4; FIG.

6 is a view schematically showing a state in which the forming inhibitor is injected from the forming inhibitor supply apparatus according to an embodiment of the present invention.

<Description of Symbols for Major Parts of Drawings>

21a, 21b: road hopper

32: conveyor belt

41: shuttle hopper

43: shuttle suit

44a, 44b: batch hopper

51: feed tank

62: transfer piping

66: cylindrical pipe

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in Figs. 3, 4 and 5, a certain amount of inhibitors 11 and 12 are classified according to particle size and stored in a small amount with a large amount of stored hoppers 21a and 21b. Rotary valves 22a and b for smooth discharge are coupled to the lower side of the hopper so that the two hoppers can be shared with each other and the inhibitor feeder 23 having a propeller shape to facilitate the discharge by a predetermined amount to the upper side of the belt 32. ) Is installed to be inserted.

It is discharged by a certain amount by the operation of the feed motor 25 of one side and is also discharged by adjusting the amount by the rotation speed ratio of the motor 25, if a large amount of inhibitor is temporarily needed, It is installed vertically by the rod hopper fixing stand 24 to both sides of the lower part.

As described above, immediately below the outlet of the rod hopper feeder 23, a conveyor belt 32 is provided with a plurality of carrier rollers for smooth transfer of the inhibitor from the rod hoppers 21a and 21b to the batch hoppers 44a and 44b. It is installed to be composed of pulleys (31, 33) and the conveyor support stand (35).

It is fixed on one side of the head pulley 33, and is driven by the power of the rotary motor 34 installed on the lower side thereof, and the hopper type is fixed to one side via a shuttle chute 43 whose inhibitor is easy to distribute and store for each particle size. By the operation of the installed angle conversion cylinder 42, the semicircular chute is supplied to the side of the hoppers 44a and 44b which store only a predetermined amount of drawing audio left and right.

The inhibitors transported as described above are classified into fines or forms and stored in the batch hoppers 44a and 44b.

This is detected by the fixed " High " 45 or " Low " level limit switch 46 which is fixed and installed so as to detect the amount of accumulation on both sides of the inside of each hopper, and the control unit 71 and the rotary valves 47a and 47b. By controlling the amount of discharged by the interaction with the storage and supply and receive, each of the hopper (44a, 44b) is installed discharge control valves (47a, 47b) for controlling the discharge of the stored inhibitor.

This means that when the tip of the male screw is rotated by the power of the rotating motor, a certain amount of inhibitor is discharged by opening and closing a linear reciprocating motion by the interaction with the female screw.

The inhibitor discharged from the control valves 47a and b is supplied to the feed tank 51 fixed and installed at the lower portion of the control valve 47a and b, which is in the form of a conical hopper having different upper and lower diameters.

Below the inside of the hopper is installed a weight detector for detecting the weight of the inhibitor supplied, i.e. recognizing the amount continuously supplied and controlling the amount fed into the TLC 16, which is the same size as the inner diameter of the cylindrical hopper. It is provided with the iron plate and the funnel type by a constant operation and the inhibitor mounting plate 53 is provided with a hole 55 of a constant diameter in the center thereof.

The lower part is composed of a compression spring 54 that can withstand a certain weight, and when the inhibitor is supplied, the amount is gradually recognized and discharged by the interaction with the control unit 71, that is, lowered downwardly to the lower side. According to the regulation dose, a corresponding amount of inhibitor is discharged. When the inhibitor is introduced into the central hole 55, the inhibitor is discharged to the lower side.

The inhibitors 11 and 12 discharged as described above are supplied to the inside of the TLC 16 through a transfer pipe 62 having a constant diameter and a nitrogen line is installed for blowing using nitrogen.

This is possible to supply to the inside of the TLC 16 by spraying toward one side of the transfer pipe 62 at a certain angle, that is, the movement path side, and the inhibitor supplied through the pipe 62 is an injection pipe nozzle (the tip of the movement path) ( Inhibitors were introduced into the TLC by high-pressure nitrogen up to 63).

In addition, the injection pipe nozzle 63 is a lifting cylinder 65 mounted horizontally with the injection pipe nozzle 63 on one side by mounting a plurality of roller rollers 64 in the space of the cylindrical having different diameters. By the operation of the upper and lower by a predetermined amount to prevent the inflow to the dust collector 17 installed on one side when the inhibitor is introduced.

The control unit 71 further includes a control unit 71 and an operation panel 72 for generating and automatically controlling all of the above-mentioned signals together with the injection tube nozzle 63 device into which the entire amount is introduced into the TLC 16.

Hereinafter, the operation of the present invention.

That is, according to the embodiment of the present invention, it is performed by a series of automatic operation, all of the control is made possible in the control unit 71, and the deregulation injection timing is made at 70 to 150 tons of waste water in the TLC 16.

After the deregulation, the deregulation reaction ends at a certain time, that is, at the TLC repair dose of 200 to 250 tons, and the deregulation input and foaming inhibitor input conditions according to the content of Si in the blast furnace are as follows. Table 1 is as follows.

Table 1

중 Water Medium Silicon 0.40% 0.50% 0.60% 0.70% 0.80% 0.90% .... ... Deregulated Input Blast Management Standard 2.5ton 5ton 7.5ton 10ton 12.5ton .... ... Inhibitor dose Input amount "0" 60 kg 120 kg 180 kg 240 kg 300 kg .... ...

As shown in Fig. 4, the angle at the shuttle chute 43 is detected when the level is detected at the "low" level 46 in the level meter that can recognize the level at each batch hopper 44a, 44b. The switching cylinder 42 is operated to move the chute 43 to the upper portion immediately above the side which is leveled to the low level.

At this time, the rotary valves 2a and 2b and the feed motor 25 are operated to discharge the inhibitors stored in the corresponding loading hoppers 21a and b, and the corresponding batch hoppers are passed through the conveyor belt 32 and the shuttle chute 43. Replenish until the "high" level 45 is detected at 44a, 44b and stop in reverse order after the "high" level 45 is detected,

Even when the "low" level 46 is detected during the suppression, the feed is continued until the batch hopper "high" level is reached.

As described above, the deregulatory according to the (Si) content in the following water when the both sides of the level is detected as the "high" level 45 continuously supplied to the hopper (44a, b) for the replenishment of the inhibitor. While the input amount is controlled and input, the type and amount of the inhibitors 11 and 12 introduced by the interaction with the control unit 71 after a predetermined time is determined.

After that, when the inhibitor is discharged from the weight detector of the feed tank 51 and naturally dropped into the inner side of the transfer pipe 62, the dust is discharged when it is moved to the injection pipe nozzle 62 through the transfer pipe at a nitrogen pressure. 17) and to control the forming phenomenon while preventing the loss of the TLC tool 16 outside.

The above is summarized as follows.

That is, according to an embodiment of the present invention, in the foam control inhibitor remote control device according to the deregulation input in the blast furnace, a rotary valve for discharging the inhibitor to each hopper with two sets of rod hoppers having the same capacity, and a constant size, Inhibitor storage unit consisting of hopper fixing stand with feed motor, Belt conveyor for smooth transportation of inhibitor together with each pulley for power transmission, Inhibitor feed unit consisting of rotating motor and its conveyor belt stand, Hopper The inhibitor dispensing device portion, which is composed of a cylinder for switching angles 42, together with a shuttle hopper 41 having a cylindrical shuttle chute fitted with a cylindrical shuttle chute, and a predetermined amount of a fine powder 11 or a fixed inhibitor 12 is separated and transported. , A shared supply control valve (4a and b) to be stored, a rotary valve (437a and b) for smooth discharge, and two sets of hoppers to be shared with each other. 8) conical, with a feed tank 51 of constant diameter, with an inhibitor supply consisting of a "low" 46 and a "high" level limit switch 45. With inhibitor rest plate consisting of inhibitor seat plate 53, compression spring 54, and weight detector formed with holes 55 of constant diameter, it is possible to feed into the inside of TLC 16 which is waiting on both track sides. With the inhibitor supply control valve 48 and the nitrogen flow control valve 61 installed therein, the pipe 62 as a movement path, and a plurality of rollers 64 and two cylindrical pipes 66 with different diameters and lifting cylinders ( A control unit 71 and an operation panel 72 for automatically generating and automatically controlling all the signals described above are included, along with the inhibitor input device unit configured as 65).

Therefore, according to the present invention, by controlling the input amount of the inhibitor in accordance with the amount of Si in the metal by not forming a primitive work depending on the manpower, equipment, and operator experience during the operation of the forming inhibitor (11, 12) into the TLC It prevents damage to the equipment due to foaming and minimizes the impurity content in the water to provide stable supply of high quality water to the next process.

The foregoing is merely illustrative of preferred embodiments of the present invention and those skilled in the art to which the present invention pertains may make modifications and changes to the present invention without departing from the spirit and spirit of the invention as set forth in the appended claims. It should be recognized.

Claims (5)

In the supply device for injecting the forming inhibitor into the TLC where the molten iron drawn out through the blast furnace opening, At least two storage hoppers that classify and form the foam inhibitors according to particle sizes; A feed hopper having a weight measuring device for measuring a weight of the foaming inhibitor which is temporarily stored and discharged from the storage hopper; And a supply pipe for guiding the forming inhibitor from the supply hopper to the TLC. The apparatus of claim 1, wherein the storage hopper is equipped with a level gauge for measuring the storage level of the foaming inhibitor to be stored. 2. The forming inhibitor supplying device according to claim 1, wherein the supply pipe includes a multi branch pipe. 4. The forming inhibitor supply apparatus according to claim 3, wherein a supply control valve is provided in each of the multi-distribution pipes of the supply pipe so as to adjust a supply amount of the forming inhibitor to be supplied to the multi-distribution pipe. 5. The forming inhibitor supply apparatus according to claim 4, further comprising a cylindrical pipe installed at an end of the multi branch pipe, and vertical moving means for vertically moving the cylindrical pipe vertically.