CN101161376A - Continuous casting bakie - Google Patents
Continuous casting bakie Download PDFInfo
- Publication number
- CN101161376A CN101161376A CNA2007101868740A CN200710186874A CN101161376A CN 101161376 A CN101161376 A CN 101161376A CN A2007101868740 A CNA2007101868740 A CN A2007101868740A CN 200710186874 A CN200710186874 A CN 200710186874A CN 101161376 A CN101161376 A CN 101161376A
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- CN
- China
- Prior art keywords
- ceramic filter
- continuous casting
- ceramic
- tundish
- casting tundish
- 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.)
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- Filtering Materials (AREA)
- Porous Artificial Stone Or Porous Ceramic Products (AREA)
Abstract
The present invention relates to a continuous casting tundish which belongs to the metallurgy field. The invention is characterized in that the invention is composed of a tundish fused bath, a water supplying nozzle and a stopper rod which is covered with at least one ceramic filtering piece. As the ring porous ceramic filter is packed and covered to the stopper rod of the tundish and the fireclay is used for sealing between the porous ceramic filter in covering, the molten steel will flow through the ring porous ceramic filter before entering the water nozzle thereby obtaining the effects of filtering molten steel and absorbing foreign material.
Description
One. technical field
The present invention relates to a kind ofly in the middle of continuous casting, belong to field of metallurgy.
Two. technical background
The continuous casting tundish of Ferrous Metallurgy process not only has storage, distributes the effect of molten steel, but also is an equipment that molten steel is carried out refining, and it can play and improve the molten steel flow condition, removes in the molten steel effect such as field trash.Wait the flow condition of optimizing molten steel by barricade is installed in tundish, increased the time of staying of molten steel in tundish, thereby promoted floating foreign.In addition, use the ceramic filter that on barricade, has several regular distribution circular holes, further improved flow field of molten steel, played the effect that promotes impurity thing come-up, part dross inclusion adsorption.But this tundish dross inclusion adsorption is limited in one's ability, can't fundamentally play the effect of removing field trash.
Three. summary of the invention
The object of the present invention is to provide a kind of molten steel that makes to access abundant filtration, effectively remove the continuous casting tundish of field trash in the molten steel by suction-operated.
Technical solution: the present invention is made up of tundish molten bath, stopper, filling pipe end, and the stopper bottom is set with a slice ceramic filter at least.
Ceramic filter is a porous filtering sheet pottery, and the aperture is: 1-5mm.
The inner diameter d of ceramic filter and outer diameter D size are according to the outer diameter D of stopper
sDetermine: its diameter of bore d=D
s+ 20～100mm, external diameter are D=d+50～500mm, and pottery highly is 8～20mm.
The material of ceramic filter adopts yttria-stabilized zirconia YSZ, corundum α-Al
2O
3, among calcium oxide CaO or the carborundum SiC one or more.
A plurality of ceramic filters formation ceramic filter that is stacked together, the height of ceramic filter is 20～500mm.
When a plurality of porous ceramics filters 4 stack, seal with fire clay between the porous ceramics piece 4.
The present invention is set on the tundish stopper owing to annular porous ceramic filter is stacked, seal with fire clay between the porous ceramics piece during suit, molten steel this annular porous ceramic filter of before entering the mouth of a river, will flowing through earlier like this, thus played the filtration molten steel, the effect of dross inclusion adsorption.
Four, description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a filter structural representation of the present invention.
Five, the specific embodiment
The present invention is made up of tundish molten bath 1, filling pipe end 2, stopper 3, is set with at least one aperture on below the stopper 3 to be: the ceramic filter 4 that the porous ceramics of 1-5mm is made, the inner diameter d of ceramic filter 4 and outer diameter D size are according to the outer diameter D of stopper
sDetermine: its diameter of bore d=D
s+ 20～100mm, external diameter are D=d+50～500mm, and pottery highly is 8～20mm.
The material of ceramic filter 4 adopts yttria-stabilized zirconia YSZ, corundum α-Al
2O
3, among calcium oxide CaO or the carborundum SiC one or more.
If a plurality of ceramic filters 4 are stacked together when constituting ceramic filter, with the fire clay sealing, the height of ceramic filter is 20～500mm between the ceramic filter 4.
Embodiment 1
1) be raw material with yttria-stabilized zirconia (8YSZ) fine powder, wet ball grinding adds an amount of polyethylene glycol dispersant to particle diameter＜0.066mm when ball milling in ball mill, obtains suitable viscosity: ceramic size;
2) selecting thickness is that the polyurethane foam of the certain hole of having of 20mm density is as presoma, at first presoma is cut into the annular of external diameter 200mm, internal diameter 120mm, after preliminary treatment, annular presoma be impregnated in the ceramic size, after treating that slurry is full of porous body, utilize rolling process to discharge unnecessary slurry, under 110 ℃, carry out drying then, repeat above process, until the ceramic size that on porous wall, hangs with suitable depth.
3) in high-temperature electric resistance furnace in 1600 ℃ of sintering 6 hours, obtain annular porous ceramic filter.
4) show that through the result of practical application in the billet caster tundish this zirconia matter ceramic filter has played the effect of field trash in the good adsorption molten steel.Total oxygen content has reduced by 40%.
1) with yttria-stabilized zirconia (8YSZ): 30% and corundum (α-Al
2O
3): after 70% fine powder was prepared burden, wet ball grinding added an amount of polyethylene glycol dispersant to particle diameter＜0.066mm when ball milling in ball mill, obtained the ceramic size of suitable viscosity;
2) selecting thickness is that the polyurethane foam of the certain hole of having of 20mm density is as presoma, at first presoma is cut into the annular of external diameter 200mm, internal diameter 120mm, after preliminary treatment, annular presoma be impregnated in the ceramic size, after treating that slurry is full of porous body, utilize rolling process to discharge unnecessary slurry, under 110 ℃, carry out drying then, repeat above process, until the ceramic size that on porous wall, hangs with suitable depth.
3) in high-temperature electric resistance furnace in 1560 ℃ of sintering 6 hours, obtain annular porous ceramic filter.
4) show that through the result of practical application in the billet caster tundish this ceramic filter has played the effect of field trash in the good adsorption molten steel.Total oxygen content reduces more than 30%.
1) with yttria-stabilized zirconia (8YSZ): 20%, corundum (α-Al
2O
3): 60%, calcium oxide (CaO): 10%, after the fine powder of carborundum SiC:10% was prepared burden, wet ball grinding added an amount of polyethylene glycol dispersant to particle diameter＜0.066mm when ball milling in ball mill, obtained the ceramic size of suitable viscosity;
2) selecting thickness is that the polyurethane foam of the certain hole of having of 20mm density is as presoma, at first presoma is cut into the annular of external diameter 200mm, internal diameter 120mm, after preliminary treatment, annular presoma be impregnated in the ceramic size, after treating that slurry is full of porous body, utilize rolling process to discharge unnecessary slurry, under 110 ℃, carry out drying then, repeat above process, until the ceramic size that on porous wall, hangs with suitable depth.
3) in high-temperature electric resistance furnace in 1600 ℃ of sintering 8 hours, obtain annular porous ceramic filter.
4) show that through the result of practical application in the billet caster tundish this ceramic filter has played the effect of field trash in the good adsorption molten steel.Total oxygen content reduces more than 30%.
Claims (6)
1. the continuous casting tundish is made up of tundish molten bath (1), filling pipe end (2), stopper (3), it is characterized in that: be set with a slice ceramic filter (4) at least on the stopper (3).
2. continuous casting tundish according to claim 1 is characterized in that: ceramic filter (4) is a porous ceramics, and the aperture is: 1-5mm.
3. continuous casting tundish according to claim 1 and 2 is characterized in that: the inner diameter d of ceramic filter (4) and outer diameter D size are according to the outer diameter D of stopper
sDetermine: its diameter of bore d=D
s+ 20～100mm, external diameter are D=d+50～500mm, and the height of potsherd is 8～20mm.
4. continuous casting tundish according to claim 3 is characterized in that: the material of ceramic filter (4) adopts yttria-stabilized zirconia YSZ, corundum α-Al
2O
3, among calcium oxide CaO or the carborundum SiC one or more.
5. continuous casting tundish according to claim 4 is characterized in that: a plurality of ceramic filters (4) formation ceramic filter that is stacked together, the height of ceramic filter is 20～500mm.
6. continuous casting tundish according to claim 5 is characterized in that: a plurality of ceramic filters (4) seal with fire clay between the porous ceramics filter (4) when stacking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101868740A CN101161376A (en) | 2007-11-21 | 2007-11-21 | Continuous casting bakie |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101868740A CN101161376A (en) | 2007-11-21 | 2007-11-21 | Continuous casting bakie |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101161376A true CN101161376A (en) | 2008-04-16 |
Family
ID=39296404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101868740A Pending CN101161376A (en) | 2007-11-21 | 2007-11-21 | Continuous casting bakie |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101161376A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493347A (en) * | 2016-10-25 | 2017-03-15 | 华北理工大学 | Continuous casting tundish quick-change nozzle and the method with its dross inclusion adsorption |
| CN113290236A (en) * | 2021-05-31 | 2021-08-24 | 马鞍山钢铁股份有限公司 | Molten steel purification device for continuous casting tundish |
-
2007
- 2007-11-21 CN CNA2007101868740A patent/CN101161376A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106493347A (en) * | 2016-10-25 | 2017-03-15 | 华北理工大学 | Continuous casting tundish quick-change nozzle and the method with its dross inclusion adsorption |
| CN106493347B (en) * | 2016-10-25 | 2018-07-06 | 华北理工大学 | Continuous casting tundish quick-change nozzle and the method with its dross inclusion adsorption |
| CN113290236A (en) * | 2021-05-31 | 2021-08-24 | 马鞍山钢铁股份有限公司 | Molten steel purification device for continuous casting tundish |
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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 |