KR20010038714A - Apparatus for treating molten steel with multi-function - Google Patents

Abstract

PURPOSE: A multi-functional molten steel treating apparatus is provided to prevent the solidification of the molten steel in the waiting state by heating the receiving ladle and the molten steel inside the ladle with being adjacent to a receiving ladle filled with molten steel in the wait condition, and furthermore improve the quality of the molten steel even though the molten steel is in the waiting state for a while by simply removing the slag layer generated on the upper surface of the molten steel. CONSTITUTION: In a receiving ladle (4) holding molten steel (2) tapped from a converter, the multi-functional molten steel treating apparatus comprises a ladle supporting stand (10) rotationally installed to certain degrees of an angle, wherein the receiving ladle is installed on the ladle supporting stand; a heating part (40) equipped with a first heating machine (20) and a second heating machine (30), wherein the first heating machine is installed for heating the bottom part of the ladle (4) by interposing a gas cable (24) connected to a coupling block (22) installed at the upper part of the outside the receiving ladle, and the second heating machine rotationally and vertically movably installed at the upper side of the receiving ladle so that the surface of the molten steel in the ladle can be heated; and a slag removing part (70) removing the slag (3) on the surface of the molten steel, wherein a scrapper (50) is rotationally and vertically movably installed at one side of the ladle, a floating device (60) is installed at the inner side of the scrapper so that the scrapper is integrally lifted depending on the surface position of the molten steel by contacting the surface thereof.

Description

Apparatus for treating molten steel with multi-function}

The present invention relates to a molten steel processing apparatus having a multi-function for maintaining a good standby state of the molten steel in the continuous casting process after the converter is moved in and out of the steelmaking process, in more detail, the atmospheric steel ladle filled with molten steel The molten steel is heated adjacently to prevent molten steel solidification in the atmosphere by simultaneously heating the molten steel and the molten steel therein. It relates to a molten steel processing apparatus having a multifunction to improve the quality of the.

In general, in the steelmaking process, when the process equipment failure, that is, the operation failure of the equipment before and after in the continuous casting process occurs, the molten steel of the converter is brought to the atmospheric tapping ladle and waited. In order to continue, these molten steel atmospheric sieves are shown in FIG.

That is, as shown in Figure 1, the molten steel (2) has been transferred to the inside of the ladle (1) is filled and waiting for the continuous casting process, the surface of the molten steel (2) by the action of atmospheric air The slag 3 is suspended.

However, in such continuous casting process, when molten steel is waited on the receiving ladles due to a malfunction of equipment, depending on the waiting time, other work is delayed due to the long time waiting of the crane, and the next waiting steel is Due to prolonged exposure to the atmosphere, the current is fused to the upper part of the ladle, dust and gas are generated by exposure to the atmosphere, which causes environmental pollution in the workplace, and the quality of the atmospheric steel is extremely deteriorated by absorbing nitrogen in the atmosphere. On the other hand, when the continuous casting process, which is a post-process continuous casting process, is difficult due to the temperature drop of the atmospheric molten steel, accurate temperature measurement is difficult due to the slag layer of the solidified molten steel surface. there was.

The present invention has been made in order to improve the various problems as described above, the purpose of the molten steel solidified in the atmospheric state by heating the molten steel and the molten steel adjacent to the molten steel filled atmospheric grading It is to provide a molten steel processing apparatus having a multi-function to further improve the quality of the molten steel even if the molten steel in the process for a long time by simply removing the slag layer generated on the upper surface of the molten steel at the same time.

1 is a schematic view showing a molten steel in a general ladle

Figure 2 is an overall configuration showing a molten steel processing apparatus having a multifunction according to the present invention

Figure 3 is a perspective view showing a state of processing slag on the molten steel surface in the molten steel processing apparatus having a multifunction of the present invention

Figure 4 is an exploded perspective view showing a coupled state of the scraper of the molten steel processing apparatus having the present invention

Explanation of symbols on the main parts of the drawings

1 .... MULTIFUNCTIONAL HANDLING MACHINE 2 .. MELTING STEEL

3 .... slag 4 .... student ladle

10 .... ladle support 20,30 .... 1st and 2nd heater

22 .... Fastening block 40 .... Heating part

50 ... Scraper 60 ... Float

70 ... slag removal

As a technical means for achieving the above object, the present invention, the ladle support is installed to rotate a certain angle to the inner seats seated,

A first heater installed to heat the bottom of the ladle through a gas cable through a fastening block installed at an outer upper portion of the receiving ladles, and installed to rotate and move up and down at the upper side of the ladle, thereby forming the ladle molten steel surface. A heating unit having a second heater installed to be heated,

A scraper is installed to move and rotate back and forth to one side of the steel ladle, and a floating hole is installed inside the scraper to contact the molten steel surface to raise and lower the scraper integrally according to the surface position of the molten steel. By providing a molten steel processing apparatus having a multi-function configured as a slag removal unit to remove the slag of.

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

Figure 2 is a front configuration diagram showing a multi-functional processing apparatus for atmospheric molten steel according to the present invention, Figure 3 is a perspective view showing a molten steel slag processing state in the multi-functional processing apparatus for atmospheric molten steel of the present invention, Figure 4 The main part exploded perspective view showing the coupling state of the float and the scraper of the slag processing unit of the multi-functional processing apparatus of the atmospheric molten steel of the present invention, the multi-functional processing apparatus 1 of the atmospheric molten steel of the present invention is the ladle support 10, the heating unit 40 and It is comprised as the slag removal part 70.

The ladle support 10 on which the receiving ladles 4 are seated is provided with the ladle 4 in a hinge block 14 in which a load sensor 14a is built up above the base 12 mounted on the ground surface. The sovereignty 16 of the hinge is fixed, and the rod 18a of the first cylinder 18 mounted on the ground surface is extended to the ladle sovereignty 16 so as to rotate during operation of the first cylinder 18.

In addition, the ladle 4 and the heating unit 40 for heating the molten steel 2 in the ladle 4 to prevent the solidification of the molten steel, the fastening block 22 is installed on the outer upper portion of the water receiving ladle (4) The first heater 20 is installed to heat the bottom of the ladle (4) through the gas cable 24 through the (), and is installed to rotate and move up and down in the upper side of the receiving ladle (10) The 2nd heater 30 provided so that the surface of molten steel 2 may be heated is provided.

The first heater 20 is a burner device using gas supplied as a cable 24 connected through the fastening block 22, and the second heater 30 is formed of the ladle 4. Fixed bar horizontally coupled to the upper portion of the rotation bar 36, the rotary gear 36a is engaged with the drive gear 36a of the drive motor 34 is horizontally coupled to the base 32 installed on the ground surface on one side A gas lance fixed to the tip end portion 38 of the gas lance 30, and a protective cover 30a integrally installed at the fixed bar 38 is located outside the gas lance 30, and the fixed bar 38 and the rotating bar are located. The second cylinder 39 is connected between the 36 so that the second heater 30 is installed to rotate and move up and down.

On the other hand, the slag removal unit 70 for removing the slag 3 on the molten steel surface, the scraper 50 is installed to be able to move back and forth and rotate to one side of the steel ladle 4, the scraper ( Inside the 50, a floating hole 60 is provided to contact the surface of the molten steel 2 to raise and lower the scraper 50 integrally according to the surface position of the molten steel.

In addition, the scraper 50 is provided with a support arm 56 that moves up and down as a third cylinder 54 hinged and connected to an upper portion of the vertical arm 52 vertically installed to one side of the ladle 4, Rotating gear 59a that engages with the drive gear 58a of the drive motor 58 vertically installed on one side at the lower end of the transfer arm 56 connected to the fourth cylinder 56a internally mounted on the support arm 56. Is installed in the lower portion of the rotary bar 59 is installed on the outer circumferential surface.

In addition, the floating hole 60 in the inner side of the rotary bar 59 is fixedly coupled to the lower end of the fixed bar 64 installed to move through the bearing 62 inside the rotary bar 59, The upper end of the rotary bar 59 is configured to be slidably moved up and down as a spring 66 mounted on the fixing pin 66 coupled to the bottom of the transfer arm 56.

Referring to the operation and effects of the present invention made of the above configuration are as follows.

As shown in Fig. 2 to 4, when the molten steel (2) is transferred to the standby receiving ladle (4) in the case of poor operation of the continuous casting process equipment, the air nozzle of the waiting molten steel (2) and this The molten steel treatment apparatus 1 having a multifunction which simply removes the slag generated by heating and prevents molten steel coagulation by heating is as follows.

First, the ladle winding (4) is the ladle winding 16 is hinged fixed to the hinge block (14) in which the load sensor 14a is installed above the base (12) installed on the ground surface, wherein The rod 18a of the first cylinder 18 mounted on the ground surface is propagated to the sovereignty 16 of the ladle 4.

Therefore, when the weight of the ladle 10 is detected as the load sensor 14a and the amount of molten steel 2 in the ladle 10 is adjusted, and the first cylinder 18 moves forward or backward, the hinge block ( 14) the ladle sovereignty 16 is integrally rotated about the axis, and eventually the ladle support 10 fixed to the ladle sovereignty 16 rotates at an angle, which will be described in detail later. It is carried out when the slag 3 generated on the surface of the molten steel 2 in (4) is removed.

In addition, a first heater 20, that is, a burner is installed at the bottom of the receiving ladle 4, and the gas cable 24 connected to the fastening block 22 installed on the outer circumferential surface of the ladle 4 is connected to the fastening block. The first heater 20, which is a burner device installed at the bottom of the ladle 4, is operated as a gas supplied from and supplied through the bottom of the ladle 4 to the bottom of the ladle 4. Heat.

In addition, a second heater 30 is installed to heat the surface of the molten steel above the ladle 40. The second heater 30 is a gas supplied as the supply pipe 30b, and the first heater described above. Together with (20), the molten steel (2) is heated during the atmosphere to prevent solidification of the molten steel.

That is, as shown in Figure 2, when the drive motor 34 is horizontally coupled to the base 32 mounted on the ground to one side of the ladle (4), the end drive gear 34a is rotated bar ( The rotary bar 36 rotates in engagement with the outer rotary gear 36a of the 36 to integrally rotate the fixed bar 38 hingedly fixed to the upper end of the rotary bar 36.

At this time, the flame is injected from the second heater 30 which is a gas lance vertically fixed to the tip of the fixed bar 38, and a protective cover at the end of the fixed bar 36 to the outside of the second heater 30. 30a is installed, and the second cylinder 39, one end and the other end of which is fixed, is fixed between the fixed bar 38 and the rotary bar 36.

Thus, as the second cylinder 39 moves forward and backward, the fixed bar 38 moves up and down integrally, which makes it possible to more surely heat the molten steel surface, and eventually the second heater 30. Is rotated by the operation of the drive motor 34 when the initial ladle 4 is seated on the ladle support 10, and then descends as the second cylinder 39 to form molten steel in the atmospheric water ladle 4; 2) Heat the surface.

3 and 4, when slag 3 occurs due to solidification or air exposure of molten steel on the surface of the molten steel 2, it should be removed, as described above. When the ladle 4 is rotated at an angle on the support 10, the scraper 50 positioned to contact the molten steel surface of the ladle 4 is rotated so that the slag 3 on the molten steel surface is slag 80. Emissions will be removed in the phase.

At this time, the scraper 50 is provided with a support arm 56 that moves up and down as a third cylinder 54 hinged and connected to an upper portion of the vertical arm 52 vertically installed to one side of the ladle 4, Rotating gear 59a in which a lower end of the transfer arm 56 connected to the fourth cylinder 56a built in the support arm 56 is engaged with a drive motor 58 that is vertically aligned with a drive motor 58 installed to one side. ), And the rotary bar 59, which is provided on the outer circumferential surface of the rotary gear 59a, rotates integrally.

Therefore, when the drive motor 58 is operated, the rotary bar 59 installed at the lower portion of the scraper 50 rotates, and in particular, there is a floating hole between the scraper 50 inside the rotary bar 59. 60) is installed so that the scraper 50 is always rotated on the surface of the molten steel.

That is, the floating hole 60 is fixedly coupled to the lower end of the fixed bar 64 installed to move through the bearing 62 inside the rotary bar 59, the upper end of the rotary bar 59 is conveyed A spring 66 is mounted on the fixing pin 66 coupled to the bottom of the arm 56.

Therefore, when the floating hole 60 floats in contact with the molten steel surface, the fixing bar 64 is raised to the elasticity of the spring 66 in a state where the fixing bar 64 is fixed to the upper fixing pin 66, on the contrary, the surface of the molten steel When descending, the fixing bar 64 of the lower side of the fixing pin 66 is lowered by the elastic force of the spring 66, and the floating port 60 is also lowered, and the fixing bar 64 and the rotating bar of the outside thereof ( The bearing 62 is installed between 59 to smooth the floating operation of the floating port 60.

As a result, the slag 3 on the surface of the molten steel 2 is easily removed and the molten steel is waited for a predetermined time due to the heating of the surface of the molten steel ladle 4 and the molten steel 2 due to equipment failure in the continuous casting process. The quality of is kept good.

As described above, according to the molten steel processing apparatus having the multifunction of the present invention, the molten steel is heated adjacent to the molten steel filled with the molten steel and the molten steel therein to prevent solidification of the molten steel in the atmosphere. By simply removing the slag layer generated on the upper surface, there is an effect of further improving the quality of the molten steel even if the molten steel is waiting for a long time in the process.

While the invention has been shown and described with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit or scope of the invention as set forth in the claims below. I would like to know that those who have knowledge of this can easily know.

Claims (5)

In the water ladles (4) which hold | maintain the molten steel (2) with which it went out, The ladle support 10 is installed so that the receiving ladle (4) is installed to rotate at an angle to the inside, A first heater 20 installed to heat the bottom of the ladle 4 via a gas cable 24 through a fastening block 22 installed at an outer upper portion of the receiving ladle 4, and the receiving part A heating unit 40 having a second heater 30 installed to rotate and move up and down at the upper side of the ladle 10 so as to heat the ladle molten steel 2 surface; The scraper 50 is installed at one side of the receiving ladle 4 so as to be able to move back and forth and rotate, and the scraper 50 is in contact with the surface of the molten steel 2 in accordance with the surface position of the molten steel. The molten steel processing apparatus having the multifunction, characterized in that the floating hole 60 is provided to integrally raise and lower the 50 to be configured as a slag removal unit 70 for removing the slag 3 on the molten steel surface. The ladle support (10) according to claim 1, wherein the ladle support (10) is a sovereignty (16) of the ladle (1) in a hinge block (14) in which a load sensor (14a) is built up above the base (12) mounted on the ground surface. The hinge is fixed and a rod 18a of the first cylinder 18 mounted on the ground surface is connected to the sovereignty 16 of the ladle 4 so that the ladle 1 rotates when the first cylinder 18 is operated. Molten steel processing apparatus having a multifunction, characterized in that installed so The burner device of claim 1, wherein the first heater (20) is a burner device using gas supplied as a cable (24) connected through the fastening block (22), and the second heater (30) is the ladle. On one side of the (4) is horizontally coupled to the base 32 mounted on the ground surface, the rotary gear 34a meshing with the drive gear 34a of the drive motor 34 is provided on the upper portion of the rotary bar 36 on the outer peripheral surface It is a gas lance connected to the distal end of the horizontally fixed fixed bar 38, the protective cover 30a is installed to the lower side of the fixed bar 38 to the outside of the gas lance 30, and rotates with the fixed bar 38 The second cylinder (39) is connected between the bar 36, the second heater (30) is a molten steel processing apparatus having a multifunction, characterized in that installed to rotate and move up and down The support arm (56a) according to claim 1, wherein the scraper (50) moves up and down as a third cylinder (54) hinged and connected to an upper portion of the vertical arm (52) vertically installed to one side of the ladle (4). It is installed, the lower end of the transfer arm 56 is connected to the fourth cylinder 56b in the support arm (56a) is engaged with the drive gear (58a) of the drive motor (58) vertically installed to one side. The molten steel treatment device having a multifunction, characterized in that the rotary gear (59a) is installed in the lower portion of the rotary bar (59) installed on the outer circumferential surface The fixed bar (64) according to claim 1 or 4, wherein the floating hole (60) installed inwardly of the rotary bar (59) is installed to move through a bearing (62) inside the rotary bar (59). It is fixed to the lower end of the), the upper end of the rotary bar 59 is characterized in that it is spoken so as to be movable up and down as a spring (66) in the fixed pin 66 coupled to the bottom of the transfer arm (56). Molten Steel Treatment Equipment