CN1718329A - Purification method of molten steel and filtration type drain - Google Patents
Purification method of molten steel and filtration type drain Download PDFInfo
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- CN1718329A CN1718329A CN 200510044306 CN200510044306A CN1718329A CN 1718329 A CN1718329 A CN 1718329A CN 200510044306 CN200510044306 CN 200510044306 CN 200510044306 A CN200510044306 A CN 200510044306A CN 1718329 A CN1718329 A CN 1718329A
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- molten steel
- river
- type drain
- filter core
- filtration type
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Abstract
A method for cleaning the molten steel features that the molten steel flows in crystallizer via a sprue with filter to remove impurities. A filter-type sprue features that a cup-shaped filter core is embedded in the internal cavity of sprue.
Description
Technical field
The invention discloses a kind of can be before pouring into crystallizer to the molten steel of cast, filter and process and device that molten steel is further purified.Belong to metallurgical placing field.
Background technology
Remove that to be mingled with in the steel be one of vital task of smelting, the overwhelming majority large-scale is mixed between refining period of smelting process process and can be removed.To the demanding steel grade of some steel qualities, normally filter is set, the large-scale field trash in the filtering molten steel at tundish.The problem of this method is that molten steel still has the part fine foreign matter to residue among the molten steel before entering crystallizer, and its end product quality and performance are affected.At present current process can't remove further that fine foreign matter makes it to purify more in the steel.Mainly there is following problem:
1, traditional following mouth of a river itself does not possess filtering function.
2, realize very difficulty of online replacing at the filter of tundish setting.
3, the molten steel that filters through tundish is not final filtration, and still there is " secondary " pollution problem in the molten steel that enters crystallizer.
Summary of the invention
The purpose of this invention is to provide a kind of purification method of molten steel and the filtration type drain that can in casting process, further remove fine foreign matter in the steel.
The present invention is achieved in that
Described molten steel can further be removed wherein in casting process, and the purification method of molten steel of fine foreign matter is to make steel flow through having the following mouth of a river of filter, with the field trash filtering in the molten steel.
Filtration type drain is to descend the inner chamber on the top at the mouth of a river to be bumped into a cup-shaped filter core, to constitute filtration type drain.The cup-shaped filter core embeds in the following mouth of a river, the upper surface flush at the suitable for reading and following mouth of a river of filter core, and the lower port diameter at the mouth of a river requires to determine according to the continuous casting pulling rate.Before using the filter core and the following mouth of a river are assembled, and through the baking back is standby fully.At first adopt traditional mouth of a river to open and water, use the filter-type mouth of a river instead after finishing smoothly when opening to water.In casting process, when needs are changed, old changing can be continued casting with new filtration type drain.Its replacing and installation method and the existing replaceable mouth of a river are identical.
Its work principle of filter is: adopt the filter core that has the refractory material of the absorption affinity or the power of capture to make with steel inclusion, further strengthened the condition that field trash is adsorbed, increased the chance that field trash is adsorbed and the area of field trash adventitious deposit, improved trapping ability field trash.Filter core can be a diffuse type, also can be multibarrel.After the molten steel beam passed through filter core, wherein the part field trash was adsorbed by filter core, reaches the purpose that further removal is mingled with purify hot metal.
Advantage one of the present invention is effective impurity in the filtering steel; The 2nd, filter core is equipped with the following mouth of a river, makes the mouth of a river possess filtering function, can be implemented in line and changes.The 3rd, can realize final the filtration, improve the quality of steel.Can be widely used in having good economic benefit in the production of iron and steel enterprise.
Description of drawings
Accompanying drawing is the structure cutaway view of filtration type drain of the present invention.Among the figure: 1-filter core, the mouth of a river under the 2-.
The specific embodiment
Described molten steel is further removed wherein in casting process, and the purification method of molten steel of fine foreign matter is to make steel flow through having the following mouth of a river of filter, with the field trash filtering in the molten steel.Filtration is to flow to the down mouth of a river at molten steel, enters that this process is carried out before the crystallizer.
A kind of filtration type drain is made up of the following mouth of a river 2, it is characterized in that at the top inner chamber at the mouth of a river 2 down, embeds a filter core 1 that can play a role in filtering again by molten steel, the formation filtration type drain.
The shape of filter core 1 is consistent with the cavity shape at the following mouth of a river, can be circular, square or other shapes.
Filtration type drain in the enforcement is with the inner chamber upper dimension increasing at the common mouth of a river down, puts into filter core, constitutes filtration type drain.
Described filtration type drain can be applied on the following mouth of a river of the following mouth of a river of ladle or other casting of metals.
Claims (4)
1, a kind of molten steel is further removed the wherein purification method of molten steel of fine foreign matter in casting process, it is characterized in that making steel flow through having the following mouth of a river of filter, with the field trash filtering in the molten steel.
2, a kind of filtration type drain is made up of the following mouth of a river (2), it is characterized in that embedding one can pass through molten steel, again the filter core that can play a role in filtering (1) at the top inner chamber at the following mouth of a river (2).
3, filtration type drain according to claim 2 is characterized in that the upper surface flush at the suitable for reading and following mouth of a river of filter core (1), and the shape of filter core (1) is consistent with the cavity shape at the following mouth of a river, can be circular, square or other shapes.
4, filtration type drain according to claim 2 is characterized in that filter core (1) is a fire resistive material product, and its structure can be a diffuse type, also can be multitube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510044306 CN1718329A (en) | 2005-07-25 | 2005-07-25 | Purification method of molten steel and filtration type drain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510044306 CN1718329A (en) | 2005-07-25 | 2005-07-25 | Purification method of molten steel and filtration type drain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1718329A true CN1718329A (en) | 2006-01-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510044306 Pending CN1718329A (en) | 2005-07-25 | 2005-07-25 | Purification method of molten steel and filtration type drain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1718329A (en) |
Cited By (4)
| 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 |
| CN111715874A (en) * | 2020-06-18 | 2020-09-29 | 河北工业职业技术学院 | Filter type continuous casting long nozzle |
| CN112195306A (en) * | 2020-09-30 | 2021-01-08 | 山东钢铁股份有限公司 | Filtering device and filtering method for removing impurities in rare earth molten steel |
| CN115229173A (en) * | 2022-06-24 | 2022-10-25 | 攀钢集团攀枝花钢铁研究院有限公司 | High-cleanness steel continuous casting intermediate nozzle pocket brick with filtering function |
-
2005
- 2005-07-25 CN CN 200510044306 patent/CN1718329A/en active Pending
Cited By (7)
| 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 |
| CN111715874A (en) * | 2020-06-18 | 2020-09-29 | 河北工业职业技术学院 | Filter type continuous casting long nozzle |
| CN112195306A (en) * | 2020-09-30 | 2021-01-08 | 山东钢铁股份有限公司 | Filtering device and filtering method for removing impurities in rare earth molten steel |
| CN112195306B (en) * | 2020-09-30 | 2022-04-05 | 山东钢铁股份有限公司 | Filtering device and filtering method for removing impurities in rare earth molten steel |
| CN115229173A (en) * | 2022-06-24 | 2022-10-25 | 攀钢集团攀枝花钢铁研究院有限公司 | High-cleanness steel continuous casting intermediate nozzle pocket brick with filtering function |
| CN115229173B (en) * | 2022-06-24 | 2024-05-07 | 攀钢集团攀枝花钢铁研究院有限公司 | High clean steel continuous casting intermediate nozzle pocket block with filtering function |
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