CN201660669U - Pollution-free deoxidized RH refining device - Google Patents
Pollution-free deoxidized RH refining device Download PDFInfo
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- CN201660669U CN201660669U CN2010201139625U CN201020113962U CN201660669U CN 201660669 U CN201660669 U CN 201660669U CN 2010201139625 U CN2010201139625 U CN 2010201139625U CN 201020113962 U CN201020113962 U CN 201020113962U CN 201660669 U CN201660669 U CN 201660669U
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Abstract
The utility model provides a pollution-free deoxidized RH refining device, which consists of a vacuum chamber, an RH circulation pipe, molten slag, molten steel, a steel ladle furnace body and a bottom blowing ventilate brick. The pollution-free deoxidized RH refining device is also provided with a DC power supply and an electric field generator consisting of an anode and a cathode, wherein the anode is embedded on the outer peripheral surface of the RH circulation pipe to be in contact with the molten slag, the cathode is fixedly arranged on the surface of the bottom of the steel ladle furnace body to be in contact with the molten steel, and an annular protection gas seam is arranged on the outer periphery of the RH circulation pipe above the an anode. The utility model has the advantages of simple structure and reasonable design, and adds the pollution-free deoxidization function to the existing RH refining device. When the device is used for deoxidizing the molten steel, the molten steel deoxidization efficiency can reache more than 70 percent without adding metal or compound alloy deoxidizing agents, any deoxidizing impurities can not generate in the molten steel, the environment pollution is avoided, the cost of 25 Yuan/ton steel can be saved, and the utility model has considerable economic benefits.
Description
Technical field
The utility model belongs to steelmaking technical field, relates in particular to a kind of RH a refining unit of pollution-free deoxidizing.
Background technology
Existing RH device mainly comprises parts such as vacuum chamber, circulation tube, top rifle, feeding device, ladle.Utilize the RH a refining unit to handle molten steel, purpose such as can reach the degassing, decarburization, deoxidation, alloying, go to be mingled with.And utilizing RH to carry out the steel liquid deoxidation method mainly based on the direct deoxidation of reductor, vacuum deaeration helps out, because the reactant and the resultant of deoxygenation all are in the molten steel, therefore can't avoid completely molten steel is polluted.Along with people are more and more higher to the requirement of the cleanliness factor of steel, traditional method of deoxidation can't satisfy people's requirement.Reducing even avoiding deoxidation products is to reduce entire oxygen content in the steel content, an important channel of improving product surface and inner quality to the pollution of molten steel.In order to address these problems, just must be with the directive melt of drawing of the oxygen in the steel.The utility model is under the technical background of slag metal applied electric field pollution-free deoxygenation existing RH a refining unit to be transformed, to realize pollution-free deoxidizing.
The utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of novel RH a refining unit that carries out the extra electric field pollution-free deoxidizing is provided.
The utility model is achieved in that the RH treatment unit of this pollution-free deoxidizing is made up of vacuum chamber, RH circulation tube, slag, molten steel, ladle body of heater and bottom-blown air brick, it is characterized in that also being furnished with an electric field generation device of forming by direct supply, anode and negative electrode, described anode is inlayed on the outer surface that is installed in the RH circulation tube, contacts with slag; Described negative electrode is fixedly mounted on the lower surface of ladle body of heater, contacts with molten steel; At the ring protection gas pore that is installed on ring protection gas air cleft or constitutes on the periphery of RH circulation tube above the anode or on the periphery of the lower end of vacuum chamber 1 by several apertures.
Anode described in the utility model is made of the metallic conduction stupalith, links to each other with the positive pole of external dc power by lead; Described negative electrode is made of pyroceramic, refractory metal or the consumable electrode close with molten steel component, links to each other with the negative pole of external dc power by lead; Described ring protection gas air cleft or drawn with airing system by metal tube by the ring protection gas pore air inlet port that several apertures constitute links to each other.
The utility model is simple in structure, and is reasonable in design, for existing RH a refining unit has increased the pollution-free deoxidizing function, utilizes this device that molten steel is carried out deoxidation, and the deoxidation of molten steel rate can reach more than 70%.Use this device to need not to add metal or composite alloy reductor, can in molten steel, not generate any deoxidation and be mingled with, improve environmental pollution simultaneously, and cost-saved 25 yuan of/ton steel, economic benefit is considerable.
Description of drawings
Accompanying drawing is the structural representation of the utility model RH a refining unit.
1 is the RH vacuum chamber among the figure, and 2 is the shielding gas pore, and 3 is anode, and 4 is slag, and 5 is the RH circulation tube, and 6 is the ladle body of heater, and 7 is molten steel, and 8 is negative electrode, and 9 is bottom-blown air brick, and 10 is direct supply.
Embodiment
The utility model will be further described with reference to the accompanying drawings.
From accompanying drawing as can be seen this pollution-free deoxidizing RH a refining unit mainly formed by vacuum chamber 1, RH circulation tube 5, slag 4, molten steel 7, ladle body of heater 6, bottom-blown air brick 9 and an electric field generation device that constitutes by external dc power 10, anode 3 and negative electrode 8.Described anode 3 is installed in one on RH circulation tube 5 outer surfaces circles molybdenum pottery and constitutes by inlaying; Described negative electrode 8 usefulness metal molybdenum are made, and are fixedly installed on the lower surface of ladle body of heater 6.Anode 3 and negative electrode 8 link to each other with the positive and negative electrode of external dc power 10 respectively by lead separately.Be provided with a circle shielding gas air cleft 3 on the periphery of RH circulation tube 5 above the anode 3 or on the periphery of the lower end of vacuum chamber 1.The air inlet port of this air cleft 3 is drawn with airing system by metal tube and is connected.
During use, fall RH circulation tube 5,, guarantee that anode 3 on the RH circulation tube contact with slag 4 and the molten steel 7 of getting along well contacts according to the decline degree of depth of the gauge control RH circulation tube 5 of slag 4.The negative electrode 8 that is fixed on ladle body of heater 6 lower surface contacts with molten steel 7 all the time.By the anode 3 and the negative electrode 8 that place molten steel of external dc power supply 10, apply DC electric field then by the insertion slag.Simultaneously; with certain argon flow amount molten steel 7 being carried out weak argon bottom-blowing stirs; to strengthen the mass transfer of dissolved oxygen in molten steel; and be blown into the oxygen partial pressure that argon gas is used for reducing slag 4 and anode 3 contact areas by ring protection gas air cleft 3 with certain argon flow amount, to quicken the conduction of velocity of oxonium ion in the slag system.Deoxidation mode of the present utility model and effect (is example with the simulated experiment stove) see Table 1.
Table 1 adopts the deoxidation mode and the effect of the utility model RH a refining unit
| Steel grade | The initial T[O of molten steel], % | The molten steel amount, Kg | Thickness of slag layer, mm | The deoxidation mode | Deoxidation finishes molten steel T[O], % | Deoxidation efficient, % | |
| Embodiment 1 | The ADC steel | 654×10 -4 | 376 | 52 | Extra electric field is handled 17min voltage 68v, electric current 32A, argon bottom-blowing flow 9NL/min ton steel top blast argon flow amount 1NL/min ton steel | 96×10 -4 | 85 |
| Embodiment 2 | The ADC steel | 715×10 -4 | 385 | 48 | Extra electric field is handled 20min voltage 75v, electric current 18A, argon bottom-blowing flow 13NL/min ton steel top blast argon flow amount 5NL/min ton steel | 182×10 -4 | 75 |
| |
The ADC steel | 907×10 -4 | 363 | 65 | Extra electric field is handled 25min voltage 57v, electric current 46A, argon bottom-blowing flow 5NL/min ton steel top blast argon flow amount 10NL/min ton steel | 173×10 -4 | 81 |
Claims (2)
1. the RH a refining unit of a pollution-free deoxidizing, formed by vacuum chamber, RH circulation tube, slag, molten steel, ladle body of heater and bottom-blown air brick, it is characterized in that also being furnished with an electric field generation device of forming by direct supply, anode and negative electrode, described anode is inlayed on the outer surface that is installed in the RH circulation tube, contacts with slag; Described negative electrode is fixedly mounted on the lower surface of ladle body of heater, contacts with molten steel; The ring protection gas pore that on the periphery of RH circulation tube above the anode, is installed on ring protection gas air cleft or constitutes by several apertures.
2. RH a refining unit according to claim 1 is characterized in that described anode is made of the metallic conduction stupalith, links to each other with the positive pole of external dc power by lead; Described negative electrode is made of pyroceramic, refractory metal or the consumable electrode close with molten steel component, links to each other with the negative pole of external dc power by lead; Described ring protection gas air cleft or drawn with airing system by metal tube by the ring protection gas pore air inlet port that several apertures constitute links to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201139625U CN201660669U (en) | 2010-02-08 | 2010-02-08 | Pollution-free deoxidized RH refining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201139625U CN201660669U (en) | 2010-02-08 | 2010-02-08 | Pollution-free deoxidized RH refining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201660669U true CN201660669U (en) | 2010-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201139625U Expired - Fee Related CN201660669U (en) | 2010-02-08 | 2010-02-08 | Pollution-free deoxidized RH refining device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201660669U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114381669A (en) * | 2022-01-19 | 2022-04-22 | 青岛浦友精密金属有限公司 | Nickel-saving high-strength stainless steel raw material composition |
| JPWO2022270346A1 (en) * | 2021-06-22 | 2022-12-29 |
-
2010
- 2010-02-08 CN CN2010201139625U patent/CN201660669U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2022270346A1 (en) * | 2021-06-22 | 2022-12-29 | ||
| WO2022270346A1 (en) * | 2021-06-22 | 2022-12-29 | Ｊｆｅスチール株式会社 | Molten steel processing method and steel production method |
| JP7318822B2 (en) | 2021-06-22 | 2023-08-01 | Ｊｆｅスチール株式会社 | Method for processing molten steel and method for manufacturing steel |
| CN114381669A (en) * | 2022-01-19 | 2022-04-22 | 青岛浦友精密金属有限公司 | Nickel-saving high-strength stainless steel raw material composition |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101201 Termination date: 20160208 |