KR200454720Y1 - Steel slag port - Google Patents

Steel slag port Download PDF

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Publication number
KR200454720Y1
KR200454720Y1 KR2020100013081U KR20100013081U KR200454720Y1 KR 200454720 Y1 KR200454720 Y1 KR 200454720Y1 KR 2020100013081 U KR2020100013081 U KR 2020100013081U KR 20100013081 U KR20100013081 U KR 20100013081U KR 200454720 Y1 KR200454720 Y1 KR 200454720Y1
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KR
South Korea
Prior art keywords
molten steel
port
port body
slag
guide groove
Prior art date
Application number
KR2020100013081U
Other languages
Korean (ko)
Inventor
이성직
Original Assignee
(주)동양특수주강
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Priority to KR2020100013081U priority Critical patent/KR200454720Y1/en
Application granted granted Critical
Publication of KR200454720Y1 publication Critical patent/KR200454720Y1/en

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • C21B3/10—Slag pots; Slag cars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D2099/0085—Accessories
    • F27D2099/0095—Means to collect the slag or spilled metal, e.g. vessels

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
  • Furnace Details (AREA)

Abstract

The present invention relates to a slag port for collecting molten steel or slag left after use in a steelmaking process, and more particularly, a port body having a main shape of a container shape having an open upper portion is provided, and each side of the port body is provided with a trunnion. The side mounting portion is formed integrally with the needle is formed so that the port body is inclined at an angle to the front and rear with the trunnion as an axis, the port body has a spout-shaped molten steel outlet protruding outward on the front or rear upper portion Formed in the port body inner circumferential surface of the portion where the molten steel discharge port is formed, the guide groove is formed up and down from the bottom surface of the port body to the molten steel discharge port so that the molten steel discharged from the slag contained in the inner side of the port body and the molten steel accumulated in the lower part Along the inner circumferential surface of the port body, Over slag will gather on the port, it characterized in that the smooth discharge is to occur.

Description

Slag pot for steelmaking {The slag pot for steelmaking}

The present invention relates to a slag port for collecting molten steel or slag left after use in a steelmaking process, and more specifically, is provided with a port body in the shape of a bowl-shaped container with an open upper portion, and each of the left and right sides of the port body The trunnion is formed with a side mounting portion to be integrally formed so that the port body is inclined at a predetermined angle in the front and rear direction with the trunnion as an axis, and the port body has a spout-shaped molten steel outlet that protrudes outwards on the front or rear upper part. And a guide groove is formed in the port body inner circumferential surface of the portion where the molten steel discharge port is formed, from the bottom surface of the port body to the molten steel discharge port, so that the slag contained in the inner side of the port body and the molten steel accumulated in the lower part are discharged. The molten steel does not spread laterally along the inner circumference of the port body Over the would gather on the slag port, it characterized in that the smooth discharge is to occur along.

In general, large steel mills generate a large amount of slag during the steelmaking process by removing carbon and various impurities from molten steel, a molten steel that melts steel, to generate steel slag. B After the use, the remaining hot water (residual molten steel) is collected in the slag pot, and a large amount of slag floating at the top is removed, and only a small amount of molten steel remaining at the bottom is separated and reused.

As shown in FIG. 4, the conventional slag port 1 'is made of metal such as cast iron, cast steel, or alloy steel, which has excellent heat resistance and water retention, and has a top shape which is narrow toward the bottom and concave to the bottom, and has a concave bottom surface. A port body 2 'having a container shape is provided, and side mounting portions 4a' into which the trunnions 3a 'and 3b' are integrally inserted into the left and right sides of the port body 2 ', respectively, are provided. It is formed in the upper portion of the slag and remnant (remaining steel) gathered in the slag port (1 ') while the port body (2') is inclined at a predetermined angle to the front and rear with the trunnions (3a ') (3b') as an axis. The large amount of floating slag is separated and removed first, and only a small amount of molten steel remaining in the lower portion is collected and reused.

However, in the conventional slag port 1 ', the upper portion of the port body 2' is simply opened in a circular shape so that the slag floating in the upper portion of the port body 2 '(approximately the inner space of the port body 2') After discharging and discharging 2/3 ~ 3/4 of the volume first, a small amount of molten steel remaining in the lower part (approximately 1/3 ~ 1/4 of the internal space of the port body (2 ') However, the inner bottom surface of the port body 2 'is recessed downward so that the molten steel stays in a molten state without cooling quickly in the state where the molten steel is held in the lower part, but the slag port (1) A small amount of molten steel spreads thinly and widely along the bottom surface and the inner circumferential surface of the port body 2 'in the process of tilting') at an angle to allow molten steel to flow along the inner surface of the port body 2 '. After cooling, molten steel sticks to the inner circumferential surface of the slag port 1 '. There was a problem that only a small amount of emissions are not discharged as it is.

In addition, the upper part of the slag port 1 'is wide open when discharging slag floating on the inner upper part of the slag port 1', so that not only a large amount of slag is discharged at once but also the slope change of the slag port 1 'is changed. As the slag overflows excessively, there is a risk of safety accident, and molten steel is included together with the slag.

The present invention is to improve the problems as described above to form a spout-shaped molten steel outlet protruding outward on the front or rear upper portion of the port body and the inner peripheral surface of the port body in the portion where the molten steel outlet is formed at the bottom surface of the port body When forming the guide groove up and down to the molten steel outlet, the molten steel gathered and flowed along the guide groove along the inner circumferential surface of the port body when the slag in the inner side of the port body and the molten steel accumulated in the lower part of the port body did not spread sideways. The purpose is to smoothly discharge in the state, and also to ensure that the slag is stably discharged without excessive flow to the portion where the molten steel discharge port is formed in the port body.

In order to achieve this purpose, a port body is formed in a container shape of a main shape having an upper opening, and side mounting portions on which the trunnions are integrally mounted are formed on the left and right sides of the port body. Port body is to be inclined at a predetermined angle in the front and rear, the port body is formed in the spout-shaped molten steel outlet protruding outward on the front or rear upper portion and the port body on the inner peripheral surface of the port body of the portion where the molten steel outlet is formed Guide grooves are formed up and down from the bottom surface to the molten steel discharge port, so that when the slag contained in the inner side of the port body and the molten steel held in the lower portion are discharged, the molten steel gathers along the guide groove without spreading laterally along the inner circumferential surface of the port body. In order to achieve a smooth discharge of the There is a characteristic.

As described above, according to the present invention, a molten steel discharge port having a spout shape projecting outward is formed at the front or rear upper portion of the port body, and the inner circumferential surface of the port body of the portion in which the molten steel discharge port is formed is located from the bottom surface of the port body to the molten steel discharge port. As the guide grooves are formed, the molten steel solidifies and adheres to the inner circumferential surface of the port body as the molten steel flows along the guide groove without spreading laterally along the inner circumferential surface of the port body during discharge of the molten steel held in the inner lower portion of the port body. It can be discharged smoothly in a molten state without, and the slag is discharged to the portion where the molten steel discharge port is formed in the port body has an effect that can be stably discharged without excessive flow.

1 is a schematic perspective view showing a temporary example of the slag port according to the present invention
Figure 2 is a perspective view showing a state in which the lower portion of the guide groove in the slag port according to the present invention is formed wider than the molten steel outlet of the upper portion
Figure 3 is a longitudinal cross-sectional schematic diagram of the slag port according to the present invention
4 is a perspective schematic view of a conventional slag port

Hereinafter, the preferred configuration according to the present invention will be described in detail by the drawings.

Steelmaking slag port 1 according to the present invention is a cast iron or cast steel or alloy steel, such as excellent heat resistance and water retention to collect the molten steel or slag left after use in the steelmaking process as shown in Figure 1 to 4 As a pot made of a metal material, and a port body 2 having a main shape of a container shape having an upper portion opened therein, and partly molten steel together with slag when separating slag which is an impurity in the steelmaking process. Iii) side and side mounting portions 4a and 4b on which the trunnions 3a and 3b are integrally mounted on the left and right sides of the port body 2, respectively. Slag gathered on the port body 2 while the port body 2 is inclined at an angle to the front and rear with the trunnion (3a) (3b) is inserted into the protruding to the left and right sides of the port body 2 through the shaft And at the top of the molten steel The large amount of floating slag is separated and removed first, and only a small amount of molten steel remaining in the lower portion is collected and reused.

As shown in FIGS. 1 to 3, the port body 2 is a container shape of a main shape having an upper portion and a narrower portion toward the lower portion, and a bottom surface concave downward, and a spout shape projecting outwardly on the front or rear upper portion. The molten steel outlet 5 is formed, and the guide groove 6 is vertically formed from the bottom surface of the port body 2 to the molten steel outlet 5 on the inner circumferential surface of the port body 2 where the molten steel outlet 5 is formed. The inner circumferential surface of the port body 2 is formed while flowing along the guide groove 6 without spreading laterally along the inner circumferential surface of the port body 2 when discharging molten steel accumulated in the inner lower portion of the port body 2. The molten steel solidifies and is discharged smoothly in a molten state without sticking.

In addition, the guide groove 6 is formed as a straight groove having the same width as the upper and lower as shown in Figure 1, or as shown in Figures 2 and 3, the upper portion of the guide groove 6 is narrow and lower It is formed as a tapered groove gradually wider to the port body (2) when the molten steel is discharged to the lower when the molten steel is easily introduced into the guide groove (6) through the wide lower portion of the guide groove (6) and gradually narrow As it flows along the upper portion of the formed guide groove 6, it is not rapidly cooled and solidified without being solidified so as to be smoothly discharged through the molten steel discharge port 5.

2 and 3, when the upper groove is narrow and the lower portion is formed as a wide tapered groove, the width of the lower portion is preferably 1.2 to 3 times wider than the upper portion, and the width of the lower portion is too high. When formed wide, the molten steel spreads widely on the lower inner circumferential surface of the guide groove 6, causing a problem of rapid cooling and solidification.

On the other hand, the guide groove 6 is formed in a state inclined upwardly in a constant outward direction from the bottom surface of the port body 2 to the upper end of the molten steel outlet (5) to discharge the molten steel more smoothly. .

In addition, the port body 2 has a ring-shaped pedestal 7 integrally fixedly attached along the lower outer surface thereof so that the bottom surface of the port body 2 and the port body 2 are spaced apart by the pedestal 7. While maintaining the state prevents the ground from being damaged or thermally conducted by the hot slag and molten steel contained in the inside of the port body 2, the empty space is formed in the lower portion of the port body 2 by the pedestal (7) Thus, the expansion and contraction caused by the high temperature of the port body 2 is made to be smooth.

In addition, the port body 2 has a plurality of reinforcing ribs 8 fixedly attached to the outer circumferential surface in the horizontal and vertical directions so as to reinforce the overall durability and strength of the slag port 1.

The operation of the present invention is as follows.

According to the present invention, the slag generated in the steelmaking process floats on the molten steel in the smelting furnace. In the process of transferring the slag which is an impurity from the smelting furnace to the slag port (1), some molten steel which is in contact with the lower part of the slag is slag and the slag port (1). When the slag and a certain amount of molten steel are stored in the port body 2 of the slag port 1, the trunnions 3a and 3b mounted on the left and right sides of the port body 2 are ported on the axis. Tilt the slag port 1 at an angle toward the molten steel outlet 5 protruding outward on the front upper portion of the body 2 to stably separate the slag floating on the upper side through the molten steel outlet 5 without excessive overflow. To be discharged.

After the slag is separated and discharged as described above, the slag port 1 is continuously inclined toward the molten steel outlet 5 of the port body 2 to collect a small amount of molten steel remaining in the lower part of the port body 2 in a separate container. It is to be reused, as shown in Figure 3 guide grooves formed up and down from the bottom surface of the port body (2) to the molten steel outlet (5) on the inner peripheral surface of the portion where the molten steel outlet (5) is formed in the port body (2) ( 6) The inner circumferential surface of the port body 2 as the molten steel accumulated on the bottom surface of the port body 2 flows along the guide groove 6 without spreading widely along the inner circumferential surface of the port body 2 along the side. The molten steel is solidified in the molten state and is smoothly discharged through the molten steel outlet 5 in a molten state.

In particular, the guide groove 6 is formed as a tapered groove in the upper portion is narrower and gradually wider toward the lower portion as shown in Figures 2 and 3, the molten steel is inclined to the lower portion when discharging the molten steel by tilting the port body (2) The molten steel outlet 5 in a molten state without being rapidly cooled because it is easily flowed into the guide groove 6 through the wide lower portion of the guide groove 6 and flows along the upper portion of the guide groove 6 which is formed narrower. It is discharged smoothly through.

1, 1 '. Slag pot
2, 2 '. Body
3a, 3b, 3a ', 3b'. Trunnion
4a, 4b, 4a '. Side Mount
5. Molten steel outlet
6. Guide groove
7. Pedestal
8. Reinforcement rib

Claims (3)

A port body is formed in the shape of a main vessel-shaped container with an upper opening. Side ports are formed on the left and right sides of the port body, respectively, in which trunnions are integrally mounted. It is inclined at an angle and the port body in the steel slag port is formed in the spout-shaped molten steel discharge port protruding outward on the front or rear upper portion, the port body of the portion where the molten steel discharge port (5) is formed The inner circumferential surface has guide grooves 6 formed up and down from the bottom surface of the port body 2 to the molten steel discharge port 5 so that the molten steel is discharged from the slag contained in the inner side of the port body 2 and the molten steel accumulated in the lower portion thereof. It is characterized in that the smooth discharge is made while flowing along the guide groove (6) without spreading along the inner peripheral surface of the port body (2) Is a slag pot for steelmaking.
2. The guide groove (6) according to claim 1, characterized in that the guide groove (6) is formed as a straight groove having the same width as the upper and lower portions, or the upper portion of the guide groove (6) is formed as a tapered groove gradually wider toward the lower portion. Steel slag pot
According to claim 1, wherein the guide groove (6) is formed in a narrow tapered groove in the upper portion of the lower portion of the lower width is formed by 1.2 to 3 times wider than the upper portion, the guide groove (6) is a port Slag port for steelmaking, characterized in that the bottom surface of the body (2) is formed to be inclined upwardly in a constant outward direction to the upper end of the molten steel outlet (5).
KR2020100013081U 2010-12-17 2010-12-17 Steel slag port KR200454720Y1 (en)

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KR2020100013081U KR200454720Y1 (en) 2010-12-17 2010-12-17 Steel slag port

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Application Number Priority Date Filing Date Title
KR2020100013081U KR200454720Y1 (en) 2010-12-17 2010-12-17 Steel slag port

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101190773B1 (en) 2010-12-27 2012-10-12 (주)동양특수주강 The trunnion shaft of a slag pot for steelmaking and the making method thereof and the slag pot
CN115369196A (en) * 2021-02-26 2022-11-22 韶关市德中机械有限公司 Novel slag pot

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0588756U (en) * 1991-08-26 1993-12-03 株式会社岡本 Ladle for casting

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0588756U (en) * 1991-08-26 1993-12-03 株式会社岡本 Ladle for casting

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101190773B1 (en) 2010-12-27 2012-10-12 (주)동양특수주강 The trunnion shaft of a slag pot for steelmaking and the making method thereof and the slag pot
CN115369196A (en) * 2021-02-26 2022-11-22 韶关市德中机械有限公司 Novel slag pot

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