CN2303249Y - Electric arc furnace's inner wall - Google Patents
Electric arc furnace's inner wall Download PDFInfo
- Publication number
- CN2303249Y CN2303249Y CN 97218242 CN97218242U CN2303249Y CN 2303249 Y CN2303249 Y CN 2303249Y CN 97218242 CN97218242 CN 97218242 CN 97218242 U CN97218242 U CN 97218242U CN 2303249 Y CN2303249 Y CN 2303249Y
- Authority
- CN
- China
- Prior art keywords
- protecting wall
- internal protecting
- electric arc
- utility
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Vertical, Hearth, Or Arc Furnaces (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The utility model relates to a novel inner furnace wall of an electric arc furnace, which is improved on the basis of inner furnace walls formed by striking magnesite. The utility model is characterized in that more than five metallic water-cooling inner furnace walls are arranged between an asbestos plate layer and a knotted magnesite layer, and each metallic water-cooling inner furnace wall is composed of a cast iron wall body and an inner cooling water pipe cast in the cast iron wall body. The utility model has the advantages of simple structure, convenient manufacture, and long service life, and can be used in a furnace for more than 3000 times, so that large amounts of materials for furnace repair and labor costs are saved, and the steel smelting cost can be reduced by a large margin. The utility model is suitable for electric arc furnaces for smelting steel and arc furnaces for other purposes.
Description
The utility model relates to a kind of novel electric arc furnaces internal protecting wall, belongs to metallurgical electric arc furnaces internal protecting wall device.
At present, at home and abroad in the electric arc furnace smelting, what generally use is the internal protecting wall that magnesia is made, and it is made up of asbestos flaggy, magnesia brick layer and knotting magnesia layer, the asbestos flaggy is positioned at the inboard of electric arc furnaces furnace shell steel plate, and the magnesia brick layer is between asbestos flaggy and knotting magnesia layer.Because the arc smelting temperature is very high, make the electric arc furnaces internal protecting wall be subjected to ablate under high temperature and the chemical action very fast, the general life-span has only the 60-80 heat, internal protecting wall falls with regard to ablated, will make internal protecting wall again, consume a large amount of magnesia etc. and repair stove material and labour cost, this expense is the important component part of steel-making cost.
The purpose of this utility model is at above-mentioned shortcoming of the prior art, and a kind of novel electric arc furnaces internal protecting wall of simple in structure, easy to operate, long service life is provided.
The purpose of this utility model is to realize like this, it is to improve to form on the basis of the internal protecting wall that existing magnesia is made, its main improvement is the metal water-cooled internal protecting wall that is provided with between asbestos flaggy and knotting magnesia layer more than 5, every metal water-cooled internal protecting wall is made up of cast iron wall body and casting interior cooling water pipe therein, be cast with the interior cooling water pipe more than 4 in every metal water-cooled internal protecting wall, the water inlet pipe of every interior cooling water pipe and outlet pipe stretch out the outside of furnace shell steel plate.
Operation principle of the present utility model is as follows:
Knotting magnesia layer directly is subjected to high-temperature furnace gas and slag ablation effect, is subjected to the cooling effect of metal water-cooled internal protecting wall simultaneously, therefore, knotting magnesia layer is beginning the smelting initial stage, ablatedly fall a part, because metal water-cooled internal protecting wall reduces knotting magnesia layer temperature, strengthens the effect of anti-scorching and chemical etching greatly.Thereby no longer continue to ablate after making inner knotting magnesia layer be ablated to certain depth, after reaching this poised state, the knotting magnesia layer of internal protecting wall is no longer fallen by the scaling loss etch, keep certain thickness forever, no longer again, make internal protecting wall promptly, reach more than the electric arc furnaces internal protecting wall heat in service lifes 3000, be permanent electric arc stove internal protecting wall.
The utility model has the advantages that simple in structure, easy to make, practical, long service life, reach more than 3000 heats.Save and repair stove material and labour cost in a large number, reduce steel-making cost significantly.It is applicable to the electric arc furnaces of electric furnace arrangement for producing steel and other purposes.
Below in conjunction with drawings and Examples the utility model is further described:
Fig. 1 is a structural representation of the present utility model.
As shown in Figure 1, the utility model includes asbestos flaggy (2), knotting magnesia layer (6), asbestos flaggy (2) is positioned at the inboard of electric arc furnaces furnace shell steel plate (1), between asbestos flaggy (2) and knotting magnesia layer (6), be provided with the metal water-cooled internal protecting wall more than 5, every metal water-cooled internal protecting wall is made up of cast iron wall body (3) and casting interior cooling water pipe (4) therein, be cast with the interior cooling water pipe (4) more than 4 in every metal water-cooled internal protecting wall, the water inlet pipe (7) of every interior cooling water pipe (4) and outlet pipe (8) stretch out furnace shell steel plate (1) outside, so that the feeding of recirculated cooling water and outflow.On the medial surface of every metal water-cooled internal protecting wall, be provided with the groove more than the twice, to increase film-cooled heat.
In the embodiment shown in fig. 1, under the metal water-cooled internal protecting wall and be positioned between asbestos flaggy (2) and knotting magnesia layer (6) and also be provided with magnesia brick layer (5).If metal water-cooled internal protecting wall extends to the electric arc furnaces bottom, can be without the magnesia brick layer.
Claims (3)
1. novel electric arc furnaces internal protecting wall, it includes asbestos flaggy (2), knotting magnesia layer (6), asbestos flaggy (2) is positioned at the inboard of electric arc furnaces furnace shell steel plate (1), it is characterized in that between asbestos flaggy (2) and knotting magnesia layer (6), being provided with the metal water-cooled internal protecting wall more than 5, every metal water-cooled internal protecting wall is made up of cast iron wall body (3) and casting interior cooling water pipe (4) therein, be cast with the interior cooling water pipe (4) more than 4 in every metal water-cooled internal protecting wall, the water inlet pipe (7) of every interior cooling water pipe (4) and outlet pipe (8) stretch out the outside of furnace shell steel plate (1).
2. internal protecting wall according to claim 1 is characterized in that being provided with the groove more than the twice on the medial surface of every metal water-cooled internal protecting wall.
3. internal protecting wall according to claim 2 is characterized in that under the metal water-cooled internal protecting wall and be positioned between asbestos flaggy (2) and knotting magnesia layer (6) and also be provided with magnesia brick layer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97218242 CN2303249Y (en) | 1997-06-18 | 1997-06-18 | Electric arc furnace's inner wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97218242 CN2303249Y (en) | 1997-06-18 | 1997-06-18 | Electric arc furnace's inner wall |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2303249Y true CN2303249Y (en) | 1999-01-06 |
Family
ID=33934573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97218242 Expired - Fee Related CN2303249Y (en) | 1997-06-18 | 1997-06-18 | Electric arc furnace's inner wall |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2303249Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557689A (en) * | 2013-10-30 | 2014-02-05 | 贵州宏狮煤机制造有限公司 | Electric arc furnace and preparation method thereof |
| CN108613555A (en) * | 2013-12-20 | 2018-10-02 | 魁北克9282-3087公司（加钛顾问公司） | The method of metallurgical furnace and the existing flame retardant coating of repacking for smelting mineral |
-
1997
- 1997-06-18 CN CN 97218242 patent/CN2303249Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557689A (en) * | 2013-10-30 | 2014-02-05 | 贵州宏狮煤机制造有限公司 | Electric arc furnace and preparation method thereof |
| CN108613555A (en) * | 2013-12-20 | 2018-10-02 | 魁北克9282-3087公司（加钛顾问公司） | The method of metallurgical furnace and the existing flame retardant coating of repacking for smelting mineral |
| CN108613555B (en) * | 2013-12-20 | 2020-04-14 | 魁北克9282-3087公司（加钛顾问公司） | Metallurgical furnace for smelting minerals and method for retrofitting an existing refractory layer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |