CN102252517A - Combined type arc furnace top preformed piece with low cost and long service life - Google Patents
Combined type arc furnace top preformed piece with low cost and long service life Download PDFInfo
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- CN102252517A CN102252517A CN2011101131815A CN201110113181A CN102252517A CN 102252517 A CN102252517 A CN 102252517A CN 2011101131815 A CN2011101131815 A CN 2011101131815A CN 201110113181 A CN201110113181 A CN 201110113181A CN 102252517 A CN102252517 A CN 102252517A
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- prefabricated component
- rapid wear
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Abstract
The invention relates to a combined type arc furnace top preformed piece with low cost and long service life. The preformed piece is composed of two parts, and can be assembled to use after manufacture. According a damage situation, different parts can be manufactured by adopting materials with different qualities, and parts easy to damage are made from higher-quality materials, and other parts are made from lower-quality materials. The unique combined type structure is beneficial to realization of rapid online replacement of a destructible zone, thereby the integrated service life of the arc furnace top preformed piece is prolonged and the cost is obviously reduced.
Description
Technical field
The present invention relates to the making and the optimization of the very useful prefabricated component of short flow process steelmaking equipment electric arc furnaces, especially improved the service life of electric furnace top prefabricated component, and reduced cost.
Background technology
Traditional electric arc furnaces bell adopts phosphate to build by laying bricks or stones in conjunction with high-alumina brick, but along with the develop rapidly of science and technology and the raising of smelting requirements, electric furnace stove bell adopts the water-cooled coil structures, and prefabricated component is then used in the bell trigonum.The furnace roof prefabricated component is generally selected for use steel fibre to strengthen the cast of corundum-mullite material and is formed, and it has excellent corrosion resistance, higher anti-sweep of gases ability and thermal shock resistance preferably, can adapt to different smelting conditions.The position of furnace roof prefabricated component damage mostly is in the electrode hole zone, and the position between the electrode hole particularly is because the erosion of the washing away of this position sustaining electrode action of high temperature, inner flue gas of the stove, slag etc.After the furnace roof prefabricated component used to a certain degree, non-electrode hole zone can also work on, but electrode hole zone attenuation, even avalanche, cause the furnace roof prefabricated component to need integral replacing.Therefore, for non-electrode hole zone, be a kind of very serious waste, because this part material accounts for more than 3/4ths of whole prefabricated component.At present, do the life-span that method such as globulate has improved the furnace roof prefabricated component to a certain extent by trickle cooling around the slag splashing, electrode hole, with prefabricated component, but effect is very limited.
Summary of the invention
In the life-span that the present invention adopts dual mode to improve the furnace roof prefabricated component, also reduced cost simultaneously.At first, by the position of the discarded furnace roof prefabricated component damage of statistics and analysis, the furnace roof prefabricated component is divided into two parts: rapid wear zone and body region, rapid wear zone are exactly the electrode hole zone, and body region then is other zone except that the rapid wear zone.During making these two parts are made separately, passed through the bonding assembly unit of fire clay when building by laying bricks or stones.In use, after the damage of rapid wear zone, the prefabricated component body region need not changed, and only needs to change the rapid wear zone, thereby has reduced the waste of prefabricated component body region material, has improved the comprehensive life of furnace roof prefabricated component yet; Secondly, prefabricated component rapid wear zone selects for use the material of different qualities to make with body region, and the higher material of quality is selected in the rapid wear zone for use, and body region then selects for use the relatively low material of quality to make.
The technical solution adopted in the present invention is:
1, prefabricated component is divided into two parts, body region and rapid wear zone, and make respectively.Generally speaking, a body region is joined three rapid wear zones, just needs to change fast twice rapid wear zone in use.
2, two zoness of different selecting for use the material of different qualities to make prefabricated component.The optional steel fibre of selecting in rapid wear zone strengthens corundum matter, mullite, the low cement deposit material of corundum-mullite matter, and body region can select steel fibre to strengthen alumina matter, the low cement deposit material of alumina-mullite.
3, two parts are assembled after making and finishing, and smear high-performance refractory mud during assembling on contact-making surface.Assembling first can be carried out after making finishes, and pushes up at electric furnace during online replacings and directly carries out.
The invention has the beneficial effects as follows: each position of furnace roof prefabricated component has been used limiting condition, avoided the body region material waste, reduced cost, improved the bulk life time of furnace roof prefabricated component.
Description of drawings
Fig. 1: assemble back furnace roof prefabricated component vertical view first;
Fig. 2: the A-A cutaway view that is Fig. 1;
Fig. 3: furnace roof prefabricated component body region vertical view;
Fig. 4: the B-B-B cutaway view that is Fig. 3;
Fig. 5: the C-C-C cutaway view that is Fig. 3;
Fig. 6: furnace roof prefabricated component rapid wear zone vertical view
Fig. 7: the D that is Fig. 6 is to view;
Fig. 8: the E that is Fig. 6 is to view;
Among the figure 1.: body region; 2.: suspension hook; 3.: the rapid wear zone; 4.: electrode hole.
The specific embodiment
1, the furnace roof prefabricated component is divided into two parts, according to the loss situation of back furnace roof prefabricated component by shown in Figure 1 with the furnace roof prefabricated component be divided into body region 1. with the rapid wear zone 3., 4. separate perpendicular to the diameter of horizontal center line from electrode hole, and more than electrode hole edge 100mm, consider mounting structure, the inclination angle is 3 ° (Fig. 2, shown in Figure 5), that is to say, body region 1. with the rapid wear zone 3. the angle of contact-making surface and prefabricated component centre normal be 3 °, simultaneously, reserve the slit 5mm that fills fire clay.
2,3. 1. body region made respectively with the rapid wear zone, adopt the vibrating casting moulding during making, press the pre-buried suspension hook of Fig. 3 and Fig. 5 2..
3, body region is 1. identical with the manufacturing process of typical prefabricated component with rapid wear zone manufacturing process 3., 1. with on the contact-making surface 3. of rapid wear zone smear fire clay in the prefabricated component body region after making finishes, assemble by shown in Figure 1 then, can use after assembling finishes.
4, after 3. damage in the rapid wear zone, need not 1. the prefabricated component body region is hung oneself down from the water-cooled circle, can directly 3. carry out fast online replacement to the rapid wear zone.The replacing program is: 1. the prefabricated component body region is cleaned out with rapid wear zone contact-making surface 3., smeared fire clay then, assemble by shown in Figure 1, can use after assembling finishes.Change rapid wear zone number of times 3. and decide, that is to say before the 1. not serious damage of body region and can constantly change the electrode hole zone 3., make body region 1. be applied to best according to prefabricated component body region working condition 1..
5, preform material, it is as follows specifically to implement material:
5.1 body region is 1. with watering material feeding:
5.2 the rapid wear zone is 3. with watering material feeding:
5.3 fire clay
| Title | Specification (mm) | Ratio (%) |
| 88 alumina | 180 orders | 55 |
| White fused alumina | 320 orders | 20 |
| α-Al 2O 3 | 6 | |
| |
4 | |
| Aluminium dihydrogen phosphate | 15 | |
| Citric acid | 0.3 | |
| Sodium phosphate trimer | 0.15 |
Claims (5)
1. a low cost, long-life combined type electric arc stove furnace roof prefabricated component, the damage characteristics according to the prefabricated component different parts are divided into two parts with prefabricated component, and assemble use after selecting the material of different qualities to make to finish.
2. according to the description in claims 1, it is characterized in that: the furnace roof prefabricated component is divided into rapid wear zone and body region two parts are made respectively.
3. according to the description in claims 1, it is characterized in that: the optional steel fibre of selecting in rapid wear zone strengthens corundum matter, mullite, the low cement deposit material of corundum-mullite matter, and body region can select steel fibre to strengthen alumina matter, the low cement deposit material of alumina-mullite.
4. according to the description in claims 1, it is characterized in that: use fire clay during assembling.
5. according to the description in claims 1, it is characterized in that: can fast online replacement after the damage of rapid wear zone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101131815A CN102252517A (en) | 2011-04-26 | 2011-04-26 | Combined type arc furnace top preformed piece with low cost and long service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101131815A CN102252517A (en) | 2011-04-26 | 2011-04-26 | Combined type arc furnace top preformed piece with low cost and long service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102252517A true CN102252517A (en) | 2011-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101131815A Pending CN102252517A (en) | 2011-04-26 | 2011-04-26 | Combined type arc furnace top preformed piece with low cost and long service life |
Country Status (1)
| Country | Link |
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| CN (1) | CN102252517A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213545A (en) * | 2011-05-03 | 2011-10-12 | 张小旭 | Combined arc furnace cover |
| CN113983823A (en) * | 2021-11-02 | 2022-01-28 | 江苏嘉耐高温材料股份有限公司 | Small center furnace cover of life-enhanced electric furnace and manufacturing method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2102486U (en) * | 1991-05-18 | 1992-04-22 | 任守福 | Steel furnace lid built with shaped refractory brick |
| CN2216670Y (en) * | 1994-03-03 | 1996-01-03 | 史宗耀 | Modular electric-arc furnace bell |
| US20090168831A1 (en) * | 2006-07-20 | 2009-07-02 | Vesuvius Crucible Company | Electric arc furnace roof top and central portion for this roof top |
| CN201621962U (en) * | 2010-04-20 | 2010-11-03 | 西安同欣电热设备有限公司 | Compound furnace top for large-size zinc powder ore-smelting electric furnace |
| CN201770724U (en) * | 2010-06-28 | 2011-03-23 | 河南省耕生耐火材料有限公司 | Electric furnace cover for steelmaking |
-
2011
- 2011-04-26 CN CN2011101131815A patent/CN102252517A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2102486U (en) * | 1991-05-18 | 1992-04-22 | 任守福 | Steel furnace lid built with shaped refractory brick |
| CN2216670Y (en) * | 1994-03-03 | 1996-01-03 | 史宗耀 | Modular electric-arc furnace bell |
| US20090168831A1 (en) * | 2006-07-20 | 2009-07-02 | Vesuvius Crucible Company | Electric arc furnace roof top and central portion for this roof top |
| CN201621962U (en) * | 2010-04-20 | 2010-11-03 | 西安同欣电热设备有限公司 | Compound furnace top for large-size zinc powder ore-smelting electric furnace |
| CN201770724U (en) * | 2010-06-28 | 2011-03-23 | 河南省耕生耐火材料有限公司 | Electric furnace cover for steelmaking |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213545A (en) * | 2011-05-03 | 2011-10-12 | 张小旭 | Combined arc furnace cover |
| CN113983823A (en) * | 2021-11-02 | 2022-01-28 | 江苏嘉耐高温材料股份有限公司 | Small center furnace cover of life-enhanced electric furnace and manufacturing method thereof |
| CN113983823B (en) * | 2021-11-02 | 2024-04-26 | 江苏嘉耐高温材料股份有限公司 | Small central furnace cover of life-span reinforced electric furnace and manufacturing method thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20111123 |