CN201209147Y - Duplex steel-smelting apparatus for converter - Google Patents
Duplex steel-smelting apparatus for converter Download PDFInfo
- Publication number
- CN201209147Y CN201209147Y CNU2008200985874U CN200820098587U CN201209147Y CN 201209147 Y CN201209147 Y CN 201209147Y CN U2008200985874 U CNU2008200985874 U CN U2008200985874U CN 200820098587 U CN200820098587 U CN 200820098587U CN 201209147 Y CN201209147 Y CN 201209147Y
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- convertor
- converter
- dephosphorization
- smelting
- decarbonization
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Abstract
The utility model discloses a convertor duplex steelmaking device which comprises a hot metal pretreating device outside the convertor, convertors and a secondary refining device outside the convertor, the quantity of the convertors is two, one is a dephosphorization convertor, the other one is a decarbonization convertor, and the dephosphorization convertor, the decarbonization convertor and the secondary refining device outside the convertor are arranged behind the hot metal pretreating device outside the convertor in sequence. The utility model carries out the dephosphorization process and the decarbonization process of convertor smelting in the two convertors, the technological parameters are respectively and individually adjusted, the thermodynamic contradictions of dephosphorization and decarbonization in the steelmaking process are eliminated, the quality of product is improved, the functions of the convertors are specific, the oxygen blow duration of each convertor is greatly shortened, the smelting period is further shortened, the smelting with little slag can be realized, manganese ore can be put into the decarbonization convertor for adjusting the thermal equilibrium and improving the end manganese content, the use amount of manganeisen during the tapping process can be decreased, the advantages in smelting high manganese steel, ultra-low phosphorus steel, and the like are excellent, and the smelting cost is decreased.
Description
Technical field
The utility model relates to a kind of steel-making device, particularly a kind of converter duplex steel-making device.
Background technology
Steel-making is to utilize oxygen (as air, oxygen) to come the purification of metals process of the complexity of oxidation furnace charge impurities.Main technique comprises removes silicon, phosphorus, carbon, desulfurization, deoxidation and alloying.Task is exactly the requirement according to institute's steelmaking kind, and the carbon content in the pig iron is dropped to specialized range, and makes the content minimizing of other element or be increased to specialized range, reaches the desired metal ingredient of final steel.The main task of steel-making is exactly decarburization intensification dephosphorization, sulphur, in the prior art, desulfurizing function is arranged at converter outer (i.e. the desulfurizing iron pre-treatment of saying usually), therefore, converter steelmaking just has only the task of decarburization intensification and dephosphorization, and dephosphorization and decarbonization process are to be finished by a block converter, and from the metallurgical thermodynamics angle analysis, there are implacable contradiction in dephosphorization and decarbonization process.Be the two contradiction of balance, will prolong smelting cycle, improve smelting cost, and be difficult to reach desired effects by regulating other processing parameter.And for high-phosphorus iron ore, molten iron [P] will reach low-phosphorous molten iron and produce ultra-low phosphoretic steel up to more than 0.30%, adopts traditional converter smelting device does economy, and is also unrealistic.
Therefore, need a kind of steel-making device, can eliminate the thermodynamics contradiction of dephosphorization and decarburization in the process for making to greatest extent, improve the quality of products, shorten the steel-making cycle, reduce smelting cost.
The utility model content
In view of this, the purpose of this utility model provides a kind of converter duplex steel-making device, can eliminate the thermodynamics contradiction of dephosphorization and decarburization in the process for making to greatest extent, improves the quality of products, and shortens the steel-making cycle, reduces smelting cost.
Converter duplex steel-making device of the present utility model, comprise the outer hot metal pretreatment device of converter, converter and the outer secondary refining device of converter, described converter is two, be respectively dephosphorization stove and decarburization stove, set gradually the outer secondary refining device of dephosphorization stove, decarburization stove and converter behind the outer hot metal pretreatment device of converter.
Further, described dephosphorization stove and decarburization stove are the top bottom blowing converter.
The beneficial effects of the utility model: converter duplex steel-making device of the present utility model, divide two converters to carry out the dephosphorization and the decarburization of converter smelting, difference independent control processing parameter, the thermodynamics contradiction of dephosphorization and decarburization in the elimination process for making, improve the quality of products, the function Focus of converter, the oxygen blow duration of every stove is shortened greatly, then shorten smelting cycle, can realize less-slag melting, can add manganese ore in the decarburization stove and regulate thermal equilibrium and improve terminal point manganese content, can reduce the consumption of tapping process manganeseirom, to high mangaenese steel, the smelting superiority of ultra-low phosphoretic steel etc. is more outstanding, reduces smelting cost; Top and bottom combined blown converter is all adopted in two converters, and converter capacity is big, and sufficient reaction compartment is arranged, and the molten bath is stirred good, can impel the slag lime fusing, increases slag and molten iron contact area, helps dephosphorization; Can increase slag and intermetallic reaction, can eliminate the temperature head between the slag gold, improve the dephosphorization equilibrium constant, thereby reduce flux consumption, realize few slag steel-making.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further described.
Accompanying drawing is that the utility model is provided with structural representation.
Embodiment
Accompanying drawing is that the utility model is provided with structural representation, as shown in the figure: the converter duplex steel-making device of present embodiment, comprise the outer hot metal pretreatment device 1 of converter, the outer secondary refining device 4 of converter and converter, converter of the present utility model is two, be respectively dephosphorization stove 2 and decarburization stove 3, set gradually dephosphorization stove 2 behind the outer hot metal pretreatment device 1 of converter, the outer secondary refining device 4 of decarburization stove 3 and converter, dephosphorization stove 2 and decarburization stove 3 are the top bottom blowing converter, converter capacity is big, sufficient reaction compartment is arranged, and the molten bath is stirred good, can impel the slag lime fusing, increase slag and molten iron contact area, help dephosphorization; Can increase slag and intermetallic reaction, can eliminate the temperature head between the slag gold, improve the dephosphorization equilibrium constant, thereby reduce flux consumption, realize few slag steel-making.
The utility model carries out the outer desulfurization pre-treatment of molten iron converter through the outer hot metal pretreatment device 1 of converter when producing; Molten iron enters dephosphorization stove 2 dephosphorizations then, and the molten iron behind the dephosphorization is gone into decarburization stove 3 and carried out decarburization, and the molten steel behind the decarburization stove 3 enters the outer secondary refining device 4 of converter and carries out the outer secondary refining of converter.
Explanation is at last, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can carry out the modification in the parameter area or be equal to replacement the technical solution of the utility model, and not breaking away from the aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (2)
1. converter duplex steel-making device, comprise the outer hot metal pretreatment device (1) of converter, converter and the outer secondary refining device (4) of converter, it is characterized in that: described converter is two, be respectively dephosphorization stove (2) and decarburization stove (3), set gradually the outer secondary refining device (4) of dephosphorization stove (2), decarburization stove (3) and converter behind the outer hot metal pretreatment device (1) of converter.
2. converter duplex steel-making device according to claim 1, it is characterized in that: described dephosphorization stove (2) and decarburization stove (3) are the top bottom blowing converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200985874U CN201209147Y (en) | 2008-06-19 | 2008-06-19 | Duplex steel-smelting apparatus for converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200985874U CN201209147Y (en) | 2008-06-19 | 2008-06-19 | Duplex steel-smelting apparatus for converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201209147Y true CN201209147Y (en) | 2009-03-18 |
Family
ID=40479876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200985874U Expired - Fee Related CN201209147Y (en) | 2008-06-19 | 2008-06-19 | Duplex steel-smelting apparatus for converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201209147Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103667875A (en) * | 2013-08-15 | 2014-03-26 | 首钢京唐钢铁联合有限责任公司 | Preparation method of low-carbon acid-resistant pipeline steel |
| CN106096788A (en) * | 2016-06-21 | 2016-11-09 | 重庆科技学院 | Converter steelmaking process cost control method based on PSO_ELM neutral net and system |
-
2008
- 2008-06-19 CN CNU2008200985874U patent/CN201209147Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103667875A (en) * | 2013-08-15 | 2014-03-26 | 首钢京唐钢铁联合有限责任公司 | Preparation method of low-carbon acid-resistant pipeline steel |
| CN103667875B (en) * | 2013-08-15 | 2016-12-28 | 首钢京唐钢铁联合有限责任公司 | The preparation method of low-carbon acid-resistant pipeline steel |
| CN106096788A (en) * | 2016-06-21 | 2016-11-09 | 重庆科技学院 | Converter steelmaking process cost control method based on PSO_ELM neutral net and system |
| CN106096788B (en) * | 2016-06-21 | 2021-10-22 | 重庆科技学院 | Converter steelmaking process cost control method and system based on PSO _ ELM neural network |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 Termination date: 20140619 |
|
| EXPY | Termination of patent right or utility model |