KR101159953B1 - Apparatus for throwing Filler into the Nozzle of Laddle - Google Patents

Abstract

The present invention relates to a dosing device and a feeding method of the ladle filler. In the ladle filler input method, the ladle filler F injected into the nozzle 15 of the ladle 10 is classified by particle size, and then the ladle filler F classified by particle size is separated from the inside of the nozzle by the large particles, the medium particles, the small particles. The ladle filler feeding device includes a sorting means for sorting the ladle filler F introduced into the ladle nozzle by particle size, and a ladle filler F sorted by the particle size by the sorting means. It includes a ladle filler inserting means for injecting into the nozzle (15).
According to the ladle filler input device and the input method according to the present invention, since the ladle filler can be accurately injected, there is an advantage of increasing the natural porosity at the nozzle of the ladle to increase the quality of molten steel and prevent productivity delays, thereby increasing productivity. .

Description

Apparatus for throwing Filler into the Nozzle of Laddle}

The present invention relates to a ladle filler input device, and more particularly to a ladle filler input device for improving the natural porosity.

In a steelmaking factory, a ladle is a facility that receives a molten water obtained from a furnace and heats it to a constant temperature to carry out a transfer or a continuous casting process. In the steelmaking process, ladles are also refined.

Generally, a ladle used in a continuous casting process is provided with a nozzle at a lower end of a ladle main body, and a sliding gate that is selectively interrupted at the nozzle is provided to supply molten steel to a tundish.

In the continuous casting process, molten steel must be cast while continuously casting it. To this end, when molten steel is initially introduced into the ladle main body, the molten steel is prevented from entering the nozzle of the ladle to prevent heat resistance such as sand. Fill the powder ladle filler.

SUMMARY OF THE INVENTION An object of the present invention is to provide a ladle filler feeding device that improves the natural porosity by adjusting the particle size according to the up and down position in the process of injecting the ladle filler into the nozzle of the ladle.

According to a feature of the present invention for achieving the object as described above, the present invention is the sorting means for classifying the ladle filler introduced into the nozzle of the ladle by the particle size, and the ladle filler classified by the particle size by the sorting means the nozzle And ladle filler feeding means for feeding into the container.

The sorting means includes a particle size sorter having a plurality of screens having a hole formed up and down so as to classify the ladle filler by particle size, and a vibrator disposed under the particle size sorter to transmit vibration to the screen.

The aperture of the screen is smaller in diameter from top to bottom.

The screen is provided on both sides of the rear surface of the screen is coupled to the fixed rail formed in the particle size selector guide rail for guiding the entry and exit of the screen, the guide rail is provided on one side of the screen when the screen is withdrawn from the particle size selector It comprises a hinge means for rotating one side up and down.

The ladle filler inserting means has a hopper body having a ladle filler filled therein and an outlet for discharging the ladle filler at the bottom thereof, and a lower side of the outlet when the hopper body is seated on top of the nozzle of the ladle. The gate opening and closing means having a gate member for opening the guide member is coupled to the hopper body so as to be lifted and lowered, and the guide member is formed at the lower end to receive the ladle nozzle.

The hopper body has a fitting portion having a hollow in the center so that the guide member penetrates.

The guide member is disposed at a lower end with a locking portion smaller than the inner diameter of the nozzle of the ladle so as to be accommodated in the nozzle of the ladle.

The gate opening and closing means includes a support rail which is disposed to be integrally fixed to both sides of an outer circumferential surface of the hopper body, an elevating member which is arranged to be lifted up and down in the support rail, and which is raised when contacting the bottom surface of the ladle, and one end of the gate opening and closing means. It is fixed to one side of the elevating member and the other end is fixed to the gate member and the connecting member for moving the gate member during the lifting operation of the elevating member, and is disposed under the hopper body to perform the sliding movement of the gate member It includes a bracket member for supporting.

And a ladle filler filling step of classifying the ladle filler by particle size, and filling the inside of the nozzle such that the ladle filler classified through the particle size classification step toward the upper portion of the nozzle becomes smaller.

The ladle filler is classified in the order of large particles, medium particles, small particles, fine powder, and the large particles, medium particles, from the bottom in the hole in the nozzle through the hopper body located on the same vertical line as the nozzle on the top of the nozzle Laminate in order of small particles and fine powder.

According to the present invention, the ladle filler injection process is made simple and accurate. Accordingly, the ladle filler can be accurately injected, thereby increasing the natural porosity at the nozzle of the ladle, improving the quality of molten steel and preventing operation delay. It is effective to increase.

In particular, the present invention has a useful effect that the work time for matching the position of the nozzle is shortened and the ladle filler can be injected quickly and accurately in close proximity, thereby improving workability.

1 is a configuration diagram showing a method of introducing a ladle filler according to the present invention.
Figure 2 is a schematic perspective view showing the sorting means as the input device of the ladle filler according to the present invention.
3 is a perspective view showing a detailed configuration of FIG.
Figure 4 is a cross-sectional view showing the ladle filler inserting means as a ladle filler input device according to the present invention.
FIG. 5 is a cross-sectional view illustrating a ladle filler transferred according to the method of FIG. 1 stacked in a nozzle; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the ladle filler input method of the present invention, the ladle filler F introduced into the nozzle 15 of the ladle 10 is classified by particle size, and then the ladle filler F classified by particle size from the lower side in the nozzle, the large particles, The particles are stacked in the order of medium particles, small particles, and fine powder.

To this end, according to the present invention, the ladle filler (F) for classifying the ladle filler (F) by particle size and the ladle filler (F) classified through the particle size classification step to fill the inside of the nozzle such that the particle size becomes smaller toward the nozzle 15 Filler filling step.

In the particle size sorting step, the ladle filler F is classified in the order of large particles, medium particles, small particles, and fine powder. In the ladle filler filling step, the ladle filler F is positioned on the same vertical line as the nozzle 15 on the nozzle 15. Ladle fillers (F) are laminated in the order of large particles, medium particles, small particles, and fine powder from the lower side through the hopper body 70 in the hole in the nozzle 15.

As shown in FIG. 1, the ladle filler feeding device includes a classification means for classifying the ladle filler F introduced into the nozzle 15 of the ladle 10 by particle size, and a ladle filler classified by the particle size by the classification means. And ladle filler input means for introducing (F) into the nozzle 15 of the ladle.

The ladle filler F is a heat resistant powder filling the nozzle 15 of the ladle 10 and prevents direct contact between the molten steel and the sliding gate 20. The sliding gate 20 is installed below the nozzle 15 of the ladle 10 and serves to open the nozzle 15.

The ladle filler F filled in the nozzle 15 is sintered by hot molten steel in contact with the molten steel, and then sintered by iron positive pressure of the ladle 10 when the sliding gate 20 is opened during molten steel injection in a reproducing machine. The layer is removed as it is destroyed. When this operation proceeds without blockage, it is called natural opening.

When the ladle filler (F) filled during opening of the nozzle 15 of the ladle 10 does not break, and molten steel does not flow in, the hole is drilled through the blocked portion using an oxygen torch. This is called forced opening.

The forced opening is performed when the remaining slag flows into the nozzle 15 before the ladle filler F is filled, or when the filled ladle filler F is bad and excessively sintered, and then the molten steel into the ladle filler F. Occurs when this is invaded.

In order to improve the natural porosity, the ladle filler F must be accurately injected into the nozzle to prevent molten steel or current from entering the ladle filler F, and the filling state must be good.

For this purpose, a ladle filler feeding device having a sorting means and a ladle filler feeding means is provided. The sorting means includes a particle size separator 30 and a vibrator 50 disposed below the particle size separator 30 to transmit vibrations to the particle size separator 30.

The sorting means is for sorting by the particle size before the ladle filler F is injected into the nozzle 15. More specifically, the sorting means sorts the ladle filler F by particle size in order to stack small particles in large particles from the lower side in the nozzle 15 of the ladle 10. The sorting means allows the ladle filler F to be accurately injected into the nozzle 15.

Laminating from the lower side in the nozzle 15 in order of large particles to small particles is to increase the natural porosity, to improve the quality of molten steel and to prevent operation delay. When the large particles are first introduced and positioned below the nozzle 15, and the small particles are finally injected, the small particles are positioned at the upper portion where they meet the molten steel and are sintered when the molten steel is injected.

Small particles sinter faster and form dense structures when sintered than large particles, which is effective in preventing penetration of molten steel. And, placing the large particles under the nozzle 15 is to prevent excessive sintering to increase the natural porosity.

This is because when the sintered layer reacting with molten steel is not dense, molten steel may penetrate, and when excessively sintered, the ladle pillar F may be difficult to discharge when the sliding gate 20 is opened.

2 and 3, the particle size selector 30 includes a plurality of screens 31, 33, 35, and 37 formed with holes 31 a, 33 a, and 35 a so as to classify the ladle filler F by particle size. ) Has a structure arranged in multiple stages. The screens 31, 33, 35, and 37 are the first screen 31 having a smaller pore from the top to the bottom in order to classify the ladle filler F into four layers of large particles, medium particles, small particles, and fine powder. The second screen 33, the third screen 35, and the fourth screen 37 are formed. The fourth screen is located at the bottom of the screen without holes.

In the present embodiment, the first screen 31 to the fourth screen 37 have holes for selecting ladle fillers in order of particle size in order of 180 mesh or less, 180 to 300 mesh, 300 to 500 mesh, and 500 mesh or more. ) Is formed. Here, mesh is the scale of the screen, which means the number of scales within 1 inch.

When the mesh is converted into the particle size of the ladle filler (F), 180 mesh or less means 84 μm or more, 180 to 300 mesh is 46 to 84 μm, 300 to 500 mesh is 28 to 46 μm, and 500 mesh or more means 28 μm or less. do. The criterion for dividing the particle size of the ladle filler F is only an embodiment and can be changed as necessary.

The first screen 31 to the fourth screen 37 are coupled to the particle size separator 30 in a drawer type. To this end, both sides of the first screen 31 to the fourth screen 37 are provided with guide rails 41 for guiding the cashiers, and the guide rails 41 are fixed rails provided in the granularity separator 30. It has a structure moved along 43. This, drawer structure is to facilitate the discharge of the ladle filler (F) classified by particle size.

In addition, when the first screen 31 to the fourth screen 37 are withdrawn from the granularity separator 30, the one side of the guide rail 41 is supported by the hinge 45 to the fixed rail 43. It can be rotated. The up-and-down rotation is to facilitate the discharge of the ladle pillar F classified in each screen 31, 33, 35, 37.

The vibrator 50 transmits a fine vibration to the first screen 31 to the fourth screen 37. The vibrator 50 allows the ladle filler F inserted into the first screen 31 to sequentially pass through the holes of the first screen 31 to the third screen 35 to be classified by particle size within a short time. For reference, a hole is not formed in the bottom surface 37a of the fourth screen 37 positioned at the bottom of the particle size separator 30.

For reference, reference numeral 47 denotes a handle that is held by an operator during rotation of each screen.

The ladle filler F classified according to the particle size by the classification means is supplied to the ladle filler input means through the conveyor belt 60.

The ladle filler inserting means is for making the loading process of the ladle filler F into the nozzle 15 of the ladle 10 simple and accurate.

As shown in FIG. 4, the ladle filler inserting means includes a hopper body 70, an opening and closing means 80, and a guide member 90.

The hopper body 70 has an upper opening, a ladle filler F is supplied therein, and a discharge port 71 for discharging the ladle pillar F is formed at the bottom thereof. Hopper body 70 has a cylindrical structure, the narrower from the top to the bottom.

The hopper body 70 has a fitting portion 73 perpendicular to the center, and a plurality of outlets 71 are formed on both sides with respect to the fitting portion 73. This is for the quick discharge of the ladle pillar F upon opening of the outlet 71.

The fitting member 73 is fitted with the guide member 90. The fitting portion 73 is configured in the form of a circular tube having a hollow.

The opening and closing means 80 includes a gate member 88 disposed below the outlet 71 to open the outlet 71 when the hopper body 70 is seated on the top of the nozzle 15 of the ladle 10. do.

The opening and closing means 80 is a support rail 81 which is disposed to be integrally fixed to both sides of the outer circumferential surface of the hopper body 70, and is disposed in the support rail 81 so as to be lifted up and down and the bottom surface of the ladle 10. The elevating member 83 which is raised upon contact with the one end, and one end of which is fixed to one side of the elevating member 83 and the other end of which is fixed to the gate member 88 to lift the gate member 88 during the raising operation of the elevating member 83. A coupling member 85 for moving and a bracket member 87 in a rail form are integrally disposed at the bottom of the hopper body 70 to support sliding movement of the gate member 88.

The elevating member 83 has stepped portions formed at both lower portions thereof to prevent downward movement from the support rails 81, and a locking protrusion protruding inward to interfere with the stepped portions is formed at the lower portion of the support rail 81. It may have a structure.

The connecting member 85 may adopt a wire.

The opening and closing means further includes a guide pin 89 disposed between the elevating member 83 and the bracket member 87 to guide the movement of the connecting member 85 such as changing the direction and angle when the connecting member 85 moves. .

In addition, although not shown in the drawing, the connecting member 85 may adopt a link for interlocking with the lifting member 83 so as to transfer the lifting force to the gate member 88 side.

The guide member 90 is coupled to penetrate the hopper main body 70 and is capable of lifting and lowering, and a locking portion having a smaller size than the inner diameter of the nozzle 15 of the ladle 10 is accommodated in the nozzle 15 of the ladle 10 at a lower end thereof. 91 is disposed to guide the outlet 71 of the hopper body 70 to be disposed in a vertical line with the portion of the ladle nozzle 15.

The guide member 90 allows the hopper body 70 to be positioned on the same vertical line as the nozzle 15 of the ladle 10 so that the ladle filler F can be accurately filled in the nozzle 15.

Referring to the operation of the embodiment of the present invention having such a configuration as follows.

First, the ladle filler F is classified by particle size in the particle size selector 30. In the classification, when the ladle filler (F) is put into the first screen 31 located above and the vibrator 50 is operated, the ladle filler F having a small particle size is finely spaced by the fine vibrations (31a, 33a, 35a). It is made in such a way to pass.

When the classification is completed by the particle size, large particles are classified on the first screen 31, medium particles on the second screen 33, small particles on the third screen 35, and fine powder on the fourth screen 37. The sorted ladle filler (F) is discharged in the order of large particles, medium particles, small particles, fine powder and is charged to the hopper body 70 through the conveyor belt (60).

The ladle filler F charged into the hopper main body 70 is stacked in the order of the large particles, the medium particles, the small particles, and the fine powder from the lower side in the hole in the nozzle 15 under the guidance of the hopper main body 70. The ladle pillar F is stacked in FIG. 5. In this case, since the quantitative ladle filler F can be accurately injected into the hole in the nozzle 15, the natural porosity can be increased in the nozzle 15 of the ladle 10.

For reference, the ladle filler F is filled in the hopper body 70 from the bottom in the order of large particles, medium particles, small particles, fine powder, and then the large particles, medium particles, small particles, fine particles in the holes in the nozzle 15. It may be laminated in the order of powder.

At this time, the hopper main body 70 is accurately positioned on the same vertical line as the nozzle 15 of the ladle 10 by the guide member 90 to enable accurate injection into the nozzle of the ladle filler F and the ladle filler F It also solves the problem of flying in the process of falling).

Briefly describing the process of seating the hopper body 70 to the nozzle 15 of the ladle 10,

One portion of the guide member 90 is moved to the nozzle 15 of the ladle 10 by using a lifting equipment such as a crane while the portion of the guide member 90 is fitted to the fitting portion 73 of the hopper body 70. .

At this time, the hooking portion 91 of the guide member 90 is inserted into the nozzle 15 of the ladle 10 so that the hopper main body 70 and the nozzle 15 portion of the ladle 10 coincide with each other on a vertical line. Adjust it.

When the engaging portion 91 of the guide member 90 is accommodated into the nozzle 15 of the ladle 10, the hopper body 70 and the guide member 90 are lowered from the top of the nozzle 15 of the ladle 10. Let's do it.

Subsequently, as the lower portion of the elevating member 83 is seated on the bottom surface of the ladle 10 adjacent to the nozzle 15 portion of the ladle 10, the elevating member 83 comes into contact with the bottom surface of the ladle 10. Sliding operation is carried out along the support rail 81, and it is raised.

As the elevating member 83 slides upward from the inside of the support rail 81, the connecting member 85 fixed to one side of the elevating member 83 is interlocked and raised.

Thereafter, the lower portion of the support rail 81 is seated on the bottom surface of the ladle 10 to support the hopper body 70 spaced apart from the bottom surface of the ladle 10.

As the connection member 85 interlocks with the elevating member 83, the gate member 88 is pulled outward, and the gate member 88 is elevated by the pulling operation of the connecting member 85. Is moved to the) side.

In the process of moving by the lifting operation of the elevating member 83, the connecting member 85 is changed in direction through the guide pin 89, thereby giving a horizontal moving force to the gate member 88.

At this time, the gate member 88 is slidably moved in the bracket member 87 of the rail form.

Thereafter, the outlet 71 of the hopper main body 70 is opened by the movement of the gate member 88, and the ladle filler F is dropped through the open outlet 71 to fill the nozzle 15. do.

The hopper body 70 is positioned on the same vertical line as the ladle nozzle 15 through the guide member 90, and the gate member 88 is automatically opened as the ladle pillar is seated on the bottom surface of the ladle 10. (F) can be filled in the ladle nozzle 15.

In this case, since the ladle filler F can be introduced at a position proximate to the nozzle 15 of the ladle 10, the ladle filler F can not only be accurately introduced into the nozzle 15, but also of composition. Can be fed quickly without change.

Subsequently, when the filling of the ladle filler F to the nozzle 15 is completed, the guide member 90 and the hopper body 70 are lifted together using the lifting equipment, or when only the guide member 90 is lifted, the guide The engaging portion 91 of the member 90 is caught by the lower surface of the hopper body 70 to lift the hopper body 70 and the guide member 90 together.

It is to be understood that the invention is not limited to the disclosed embodiments, but is capable of many modifications and alterations, all of which are within the scope of the appended claims. It is self-evident.

10: ladle 15: nozzle
F: Ladle Filler 20: Sliding Gate
30: grain size sorter
31,33,35,37: 1st screen, 2nd screen, 3rd screen, 4th screen
31a, 33a, 35a: flight 41: guide rail
43: fixed rail 45: hinge means
47: Handle 50: Vibrator
60: Conveyor belt 70: Hopper body
71: outlet 73: fitting
80: opening and closing means 81: support rail
83: lifting member 85: connecting member
87: bracket member 88: gate member
89: guide pin 90: guide member
91: catching part

Claims (10)

Classification means for classifying the ladle filler to be introduced into the nozzle of the ladle by the particle size,
Ladle filler input means for introducing a ladle filler classified by the particle size by the sorting means into the nozzle,
The ladle filler insert means,
A hopper body having a ladle filler filled therein and a discharge hole formed therein for discharging the ladle filler;
A gate opening / closing means disposed below the outlet and having a gate member to open the outlet when the hopper body is seated on top of a nozzle of a ladle;
Coupled to the hopper main body is capable of lifting up and down, the lower end of the ladle filler input device, characterized in that it has a guide member formed with a latch portion accommodated in the nozzle of the ladle. The method according to claim 1,
The sorting means,
A particle size sorter having a plurality of screens having a hole formed in the upper and lower portions so as to classify the ladle filler by particle size;
Ladle filler input device, characterized in that it comprises a vibrator disposed under the particle size separator to transmit vibration to the screen. The method according to claim 2,
The opening of the ladle filler is characterized in that the hole of the screen is smaller in diameter from the top to the bottom. The method according to claim 2,
The screen is
Guide rails provided at both sides of the rear surface of the screen and coupled to a fixed rail formed at the particle size sorter to guide the entry and exit of the screen;
And a hinge means provided at one side of the guide rail and configured to rotate the one side of the screen up and down when the screen is withdrawn from the grain size separator. delete The method according to claim 1,
The hopper body is a ladle filler input device, characterized in that the fitting portion having a hollow formed in the center so that the guide member penetrates. The method according to claim 1,
The guide member is a ladle filler input device, characterized in that the engaging portion of the size smaller than the nozzle inner diameter of the ladle to be accommodated in the nozzle of the ladle at the lower end. The method according to claim 1,
The gate opening and closing means is a support rail disposed to be integrally fixed to both sides of the outer peripheral surface of the hopper body,
An elevating member disposed in the support rail so as to be capable of elevating up and down and being raised upon contact with the bottom surface of the ladle;
A connection member having one end fixed to one side of the elevating member and the other end fixed to the gate member to move the gate member when the elevating member is lifted;
And a bracket member disposed under the hopper body to support sliding movement of the gate member. delete delete

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