KR200417520Y1 - Skimmer slag improving heat-resistant and conjugation - Google Patents

Abstract

The present invention is a boom girder, a boom formed on the front end of the boom girder is adjustable in length through the forward or backward, and a slag skimmer connected to the front end of the boom to remove the slag by directly contacting the slag, The slag skimmer 100 forms a skimmer plate 110 of metal material that is bent forward on both sides, but a plurality of through holes 110a are perforated on the surface of the skimmer plate 110 to be installed on the outer circumferential surface 111. ) Is connected to each other through the through-hole (110a) to be fixed, and the insertion groove 121 is inserted into the upper portion of the refractory 111 by drilling a plurality of fastening holes (111a) in the upper portion of the refractory (111). To provide a slag skimmer excellent in heat resistance and usability, which is configured to be coupled to each other by using the fastening hole 120b and the fastener 130 drilled on one side of the provided coupling device 120. The present invention is coupled to the tip of the skimmer plate and the boom to be replaced periodically in direct contact with the hot slag and the coupling holes for fixing the skimmer plate can be detached from each other relatively relatively no melting and melting Since the coupler can be reused, it is possible to reduce the economic cost as well as improve the utilization range and efficiency of the slag skimmer. In addition, the present invention is a very useful design having the advantage of securing heat resistance and durability by minimizing the melting and melting caused by the slag of high temperature by laying the refractory on the outer peripheral surface of the skimmer plate having a metal material.

Slag, skimmer, exchange, utilization, ladle, molten steel, plate, refractory, heat resistant

Description

Skimmer slag improving heat-resistant and conjugation

1-reference diagram for schematically showing a state in which slag is generally removed in a steelmaking process.

Figure 2-perspective view for showing the structure of a conventional slag skimmer.

Figure 3-Separated perspective view for showing the structure of the slag skimmer excellent heat resistance and utility of the present invention.

Figure 4-perspective view for showing the structure of the slag skimmer excellent heat resistance and utility of the present invention.

5-4 is a sectional view taken along the line A-A.

6-front view for showing the structure of the slag skimmer excellent heat resistance and utility of the present invention.

Figure 7-Reference diagram for showing the state for removing the slag using the slag skimmer excellent heat resistance and utility of the present invention.

* Explanation of symbols for main parts of the drawings

10: conventional slag skimmer 11: skimmer plate

12: coupling part 13: fastener

20: Boom 30: Boom Girder

40: ladle 50: slag port

100: slag skimmer with excellent heat resistance and utility

110: skimmer plate 110a: through hole

111: refractory 111a: fastener

120: coupling sphere 120a, 120b: fastening hole

121: insertion groove

130: fastener

A: slag B: molten steel

The present invention relates to a slag skimmer excellent in heat resistance and usability, and more particularly, to ensure the heat resistance of the slag skimmer for removing the slag floating on the upper part of the molten steel as well as to separate and replace only the skimmer plate that is in direct contact with the slag. The present invention relates to a slag skimmer excellent in heat resistance and usability for improving the application range of the slag skimmer.

In general, when performing molten iron work in the steelmaking process as shown in Figure 1, the slag (A) is inevitably on the upper portion of the molten steel (B) formed inside the ladle 40 by a solvent, a non-metallic material or a metal oxide, etc. The slag (A) increases the volume when charged into the refining furnace to reduce the decarburization efficiency, increase the raw unit of various secondary raw material ferroalloy, decrease the productivity by increasing the blowing time, the excessive amount of reducing ferroalloy due to increased oxidation of metal It must be eliminated when performing charter work because it provides a cause for degradation of production quality such as use.

Therefore, in the related art, a boom girder 30 and a boom 20 formed at the front end of the boom girder 30 to adjust the length through forward or backward as a method for removing the slag A as described above and the The slag skimmer 10 was used to be connected to the front end of the boom 20 to be in direct contact with the slag A.

In detail, the slag skimmer 10 is positioned on the surface of the slag A by advancing the boom 20 in a state in which the ladle 40 is inclined toward the outlet port, and then again the boom 20. Since the slag skimmer 10 pulls the slag A backward, the slag A flows back into the slag port 50 so that the slag skimmer 10 can efficiently remove the slag A.

At this time, the slag skimmer 10 is made of a metal material as shown in Figure 2, the upper coupling portion 12 punched a plurality of fastening holes 13 to be detachable to the front end of the boom 20 Is provided, and the skimmer plate (11) for removing in direct contact with the slab (A) is formed.

However, since the slag skimmer 10 is made of a metal material, the slag A is easily deteriorated when the slag A is repeatedly removed when the temperature of the slag A is about 1300 ° C. Therefore, the service life of the slag skimmer 10 is eventually reduced. This has the disadvantage of being shortened.

In particular, since the slag skimmer 10 is manufactured integrally, when the skimmer plate 11 substantially contacts the hot slag A is damaged and damaged, the slag skimmer 10 must be disposed up to the reusable coupling part 12. I have an irrational closure.

Therefore, due to the problems as described above, not only the economic burden is increased due to the increase in the production and purchase costs of the slag skimmer 10, but also the reusable coupling part 12 must be disposed of, so that the use of the slag skimmer 10 is eventually used. Efficiency and range of application has been limited to be extremely limited.

As such, the present invention has been devised to solve the conventional problems as described above, and the present invention provides a heat resistance for securing heat resistance of the slag skimmer by minimizing melting and melting loss due to high temperature slag by laying a refractory on the outer circumferential surface of the skimmer plate. And to provide a slag skimmer excellent in utility.

In addition, the present invention makes it possible to easily detach the coupling unit coupled to the tip of the skimmer plate and the boom to replace only the skimmer plate that is directly melted and melted in contact with the hot slag to improve the range and use efficiency It is to provide a slag skimmer excellent in heat resistance and usability.

When described in detail by the accompanying drawings, the configuration of the subject innovation as described above are as follows.

Figure 3 is an exploded perspective view for showing the structure of the slag skimmer excellent heat resistance and utility of the present invention, Figure 4 is a perspective view for showing the structure of the slag skimmer excellent heat resistance and utility of the present invention, Figure 5 AA line cross-sectional view of the,

The slag skimmer 100 having excellent heat resistance and utility of the present invention is formed at the tip of the boom girder and the boom girder, and the boom is adjustable in length through forward or backward, and is directly connected to the slag connected to the tip of the boom. In the known slag skimmer to remove and remove,

The slag skimmer 100 is formed on both sides to form a skimmer plate 110 of a metal material bent toward the front, but the surface of the skimmer plate 110 through a plurality of holes (110a) perforated refractories installed on the outer peripheral surface ( 111 is connected to each other through the through-hole (110a) to be fixed, and the insertion groove 121 to be fitted in the upper portion of the refractory 111 by drilling a plurality of fastening holes (111a) in the upper portion of the refractory (111). It is configured to be coupled to each other using a fastening hole 120b and a fastener 130 drilled on one side of the provided coupling device 120.

In the present invention, the skimmer plate 110 is to be bent forward on both sides, which is to improve the removal efficiency when the slag (A) is pulled back.

On the other hand, the surface of the skimmer plate 110 has a plurality of through holes (110a), which is formed so that the refractory 111 formed on the outer circumferential surface is connected to each other to maintain a solid bond as well as to prevent cracking.

At this time, the number and size of the formation of the through-hole (110a) will have to be selectively varied depending on the installation range and use.

Therefore, it is possible to secure excellent heat resistance and durability by protecting the skimmer plate 110 of the metal material from the high temperature slag (A).

In the present invention, the material of the refractory 111 is preferably a castable refractory having excellent heat resistance and easy workability, but it is possible to use a refractory having various known components depending on the situation. Of course.

On the other hand, the coupler 120 is connected to the front end of the boom 20 and at the same time configured to insert and remove the skimmer plate 110 in the insertion groove 121, which is the skimmer plate ( In the maintenance and replacement of the 110, the operator controls the fastener 130 to easily separate the coupling unit 120 and the skimmer plate 110 so that the coupling unit 120 can be reused. It is possible to solve the inefficient problem that must be disposed of up to the reusable portion, such as slag skimmer 10 is made of, as well as to reduce the economic cost of unnecessary waste.

At this time, a plurality of fastening holes 120a are drilled on the upper portion of the coupler 120 to be connected to the front end of the boom 20.

As described above in detail with respect to the embodiment of the present invention, the scope of the present invention is not limited to this, and the scope of the present invention is included to the extent that is substantially equivalent to the embodiment of the present invention. Of course it will.

The present invention is a joint that is relatively in contact with the hot slag and the molten or dissipated by combining the skimmer plate that needs to be replaced periodically and the coupling end for fixing the skimmer plate by detaching each other. Since it can be reused, it is possible to reduce the economic cost as well as improve the utilization range and efficiency of the slag skimmer.

In addition, the present invention is a very useful design having the advantage of securing heat resistance and durability by minimizing the melting and melting caused by the slag of high temperature by laying the refractory on the outer peripheral surface of the skimmer plate having a metal material.

Claims (1)

In the boom girder, the boom formed on the front end of the boom girder and adjustable in length through the forward or backward, and the slag skimmer connected to the front end of the boom to remove the direct contact with the slag, The slag skimmer 100 is formed on both sides to form a skimmer plate 110 of a metal material bent toward the front, but the surface of the skimmer plate 110 through a plurality of holes (110a) perforated refractories installed on the outer peripheral surface ( 111 is connected to each other through the through-hole (110a) to be fixed, and the insertion groove 121 to be fitted in the upper portion of the refractory 111 by drilling a plurality of fastening holes (111a) in the upper portion of the refractory (111). Slag skimmer excellent in heat resistance and usability, characterized in that it is configured to be coupled to each other using a fastening hole (120b) and fasteners 130 drilled on one side of the provided coupling device (120).

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