CN215845666U - Steel ladle for melting alloy in LF furnace - Google Patents
Steel ladle for melting alloy in LF furnace Download PDFInfo
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- CN215845666U CN215845666U CN202122033934.3U CN202122033934U CN215845666U CN 215845666 U CN215845666 U CN 215845666U CN 202122033934 U CN202122033934 U CN 202122033934U CN 215845666 U CN215845666 U CN 215845666U
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Abstract
The utility model relates to the technical field of ladles for melting alloys in LF furnaces, in particular to a ladle for melting alloys in an LF furnace. Comprises slag line bricks, a ladle shell, a ladle bottom brick, an argon pipeline, a molten steel curdling and air bricks; the ladle shell is cylindrical, and the molten steel solidified lump is positioned in the ladle shell and at the bottom of the ladle shell; the air brick is fixedly connected to the center of the upper surface of the steel water condensation lump, the air brick pipeline is placed on the upper surface of the steel water condensation lump, and the end part of the air brick pipeline extends out of the steel ladle shell to be connected with the argon pipeline; the tank bottom brick is built on the upper surface of the molten steel coagulating lump, and the slag line brick is built on the inner wall of the ladle shell. The utility model can be applied to the LF furnace to melt the alloy, so as to realize the LF furnace to melt the alloy and further smelt the high alloy steel.
Description
Technical Field
The utility model relates to the technical field of ladles for melting alloys in LF furnaces, in particular to a ladle for melting alloys in an LF furnace.
Background
With the continuous development of steel technology, the demand of high alloy steels such as high manganese steel (Mn > 18%), high aluminum steel (Al > 3.5%), high silicon steel (Si > 3.5%) is increasing. The production process of conventional high-alloy steel generally adopts a medium-frequency induction furnace to melt alloy, and then alloy molten steel is poured into crude molten steel smelted by an electric furnace/converter. However, at present, steel mills without intermediate frequency induction furnaces or newly-built induction furnaces need to solve the problem of how to use an LF furnace to melt alloy, and the problem that the LF furnace melts alloy firstly faces is that of a ladle.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides the steel ladle for melting the alloy in the LF, which can be applied to melting the alloy in the LF, so that the alloy can be melted in the LF, and further high alloy steel can be smelted.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a ladle for melting alloy in an LF furnace comprises a slag line brick, a ladle shell, a ladle bottom brick, an argon pipeline, a molten steel coagulating lump and a gas permeable brick; the ladle shell is cylindrical, and the molten steel solidified lump is positioned in the ladle shell and at the bottom of the ladle shell; the air brick is fixedly connected to the center of the upper surface of the steel water condensation lump, the air brick pipeline is placed on the upper surface of the steel water condensation lump, and the end part of the air brick pipeline extends out of the steel ladle shell to be connected with the argon pipeline; the tank bottom brick is built on the upper surface of the molten steel coagulating lump, and the slag line brick is built on the inner wall of the ladle shell.
The ladle shell is provided with a high-alumina refractory material lining.
And baking the tank bottom bricks and the slag line bricks for more than 8 hours after the tank bottom bricks and the slag line bricks are built.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model solves the problem of alloy melting in the process of smelting high alloy steel in a steel mill without a medium-frequency induction furnace or a newly-built induction furnace, can be applied to the LF furnace to melt alloy, realizes the LF furnace to melt alloy, and further smelts high alloy steel. And the ladle for melting the alloy in the LF furnace can be repeatedly used, so that the cost is saved.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a schematic top view of the structure of the present invention.
In the figure: 1-slag line brick 2-ladle shell 3-tank bottom brick 4-argon pipeline 5-steel water-solidifying lump 6-air brick 7-tank lining residual brick 8-tank bottom residual brick 9-high-alumina refractory material lining
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
example (b):
as shown in fig. 1 and 2, the ladle for melting alloy in the LF furnace comprises a slag line brick 1, a ladle shell 2, a ladle bottom brick 3, an argon pipeline 4, a molten steel coagulated lump 5 and a gas permeable brick 6, wherein the ladle shell 2 is provided with a high-alumina refractory lining 9.
The utility model can be manufactured by adopting the ladle at the later use stage, the ladle at the later use stage is not prepared and cooled, the sliding nozzle and the air brick are not disassembled, and the ladle lining is checked after cooling, so long as the normal residual thickness of the ladle lining brick 7 is more than 80mm and the residual thickness of the ladle bottom brick is more than 60 mm.
And (3) discharging half-ladle molten steel (controlled according to clearance requirement) to a ladle at the later use stage, deoxidizing the molten steel, not adding other alloys, and cooling for 25 days until the molten steel is solidified into a lump to prepare the steel water-solidified lump 5.
The slag line is manually removed and then built again, slag line bricks 1 are built on the inner wall of a ladle shell 2, after the slag line is built, sundries in the ladle are cleaned, a ramming material at the bottom of the ladle is leveled, a gas permeable brick 6 is placed at the center of the steel weight surface in the ladle, a gas permeable brick pipeline is horizontally placed on the upper surface of a molten steel curdling 5, holes are drilled on the wall of the ladle to enable the gas permeable brick pipeline to extend out of the ladle shell 2 and be connected with an argon pipeline 4 through a joint.
The inner air brick 6 and the molten steel concretion lump 5 are filled with refractory clay, then ramming materials with certain thickness are laid on the upper surface of the molten steel concretion lump 5, ramming and leveling are carried out by an air hammer, the ladle bottom is built by the ladle bottom brick 3 in a ladle overhaul mode, the space between the ladle bottom brick 3 and the ladle wall slag line brick 1 is filled with corundum castable, and the space between the inner air brick 6 and the ladle bottom is filled with corundum materials and compacted.
Before preparing alloy, ensuring that the baking time of a ladle is more than 8 hours, discharging 15 tons of molten steel (controlled according to clearance requirement) in a tank before alloy melting, hoisting to an LF furnace, blowing argon, heating, adding alloy to be melted, and after the alloy is completely melted and heated to a target temperature, folding the alloy water into the molten steel to be made into high alloy steel.
The utility model solves the problem of alloy melting in the process of smelting high alloy steel in a steel mill without a medium-frequency induction furnace or a newly-built induction furnace, can be applied to the LF furnace to melt alloy, realizes the LF furnace to melt alloy, and further smelts high alloy steel. And the ladle for melting the alloy in the LF furnace can be repeatedly used, so that the cost is saved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and their concepts should be equivalent or changed within the technical scope of the present invention. The methods used in the above examples are conventional methods unless otherwise specified.
Claims (3)
1. A ladle for melting alloy in an LF furnace is characterized in that: comprises slag line bricks, a ladle shell, a ladle bottom brick, an argon pipeline, a molten steel curdling and air bricks; the ladle shell is cylindrical, and the molten steel solidified lump is positioned in the ladle shell and at the bottom of the ladle shell; the air brick is fixedly connected to the center of the upper surface of the steel water condensation lump, the air brick pipeline is placed on the upper surface of the steel water condensation lump, and the end part of the air brick pipeline extends out of the steel ladle shell to be connected with the argon pipeline; the tank bottom brick is built on the upper surface of the molten steel coagulating lump, and the slag line brick is built on the inner wall of the ladle shell.
2. The ladle for melting alloy in the LF furnace as claimed in claim 1, wherein: the ladle shell is provided with a high-alumina refractory material lining.
3. The ladle for melting alloy in the LF furnace as claimed in claim 1, wherein: and baking the tank bottom bricks and the slag line bricks for more than 8 hours after the tank bottom bricks and the slag line bricks are built.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122033934.3U CN215845666U (en) | 2021-08-26 | 2021-08-26 | Steel ladle for melting alloy in LF furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122033934.3U CN215845666U (en) | 2021-08-26 | 2021-08-26 | Steel ladle for melting alloy in LF furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215845666U true CN215845666U (en) | 2022-02-18 |
Family
ID=80242944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122033934.3U Active CN215845666U (en) | 2021-08-26 | 2021-08-26 | Steel ladle for melting alloy in LF furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215845666U (en) |
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2021
- 2021-08-26 CN CN202122033934.3U patent/CN215845666U/en active Active
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