CN201660663U - CAS-OB processing apparatus of pollution-free deoxidation - Google Patents
CAS-OB processing apparatus of pollution-free deoxidation Download PDFInfo
- Publication number
- CN201660663U CN201660663U CN2010201139593U CN201020113959U CN201660663U CN 201660663 U CN201660663 U CN 201660663U CN 2010201139593 U CN2010201139593 U CN 2010201139593U CN 201020113959 U CN201020113959 U CN 201020113959U CN 201660663 U CN201660663 U CN 201660663U
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- China
- Prior art keywords
- molten steel
- cas
- slag
- pollution
- cage
- 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.)
- Expired - Fee Related
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- 238000009850 CAS-OB (composition adjustment by sealed argon bubbling with oxygen blowing) Methods 0.000 title claims abstract description 18
- 238000012545 processing Methods 0.000 title abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 56
- 239000010959 steel Substances 0.000 claims abstract description 56
- 239000002893 slag Substances 0.000 claims abstract description 25
- 230000005684 electric field Effects 0.000 claims abstract description 12
- 239000011449 brick Substances 0.000 claims abstract description 5
- 239000011148 porous material Substances 0.000 claims description 8
- 239000003870 refractory metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 238000007664 blowing Methods 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 2
- 229910045601 alloy Inorganic materials 0.000 abstract description 2
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000013461 design Methods 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract 2
- 238000009847 ladle furnace Methods 0.000 abstract 1
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 16
- 239000007789 gas Substances 0.000 description 16
- 229910052786 argon Inorganic materials 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000007670 refining Methods 0.000 description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000006392 deoxygenation reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- -1 oxonium ion Chemical class 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The utility model provides a CAS-OB processing apparatus of pollution-free deoxidization comprises top rifle, cage, ladle furnace body, slag, molten steel, bottom blowing air brick, and its characterized in that still is furnished with an electric field generating device who comprises DC power supply, positive pole and negative pole, and its positive pole contacts with the slag, and the negative pole contacts with the molten steel, has installed annular protective gas seam or the annular protective gas pocket that constitutes by a plurality of aperture in the top of positive pole. The utility model discloses simple structure, reasonable in design has increased pollution-free deoxidation function for current CAS-OB processing apparatus, utilizes this device to carry out the deoxidation to the molten steel, and the molten steel deoxidation rate can reach more than 70%. The device does not need to add metal or composite alloy deoxidizer, does not generate any deoxidized inclusion in the molten steel, improves the environmental pollution, saves the cost by 25 yuan/ton steel and has considerable economic benefit.
Description
Technical field
The utility model belongs to steelmaking technical field, relates in particular to a kind of CAS-OB a refining unit of pollution-free deoxidizing.
Background technology
Existing C AS-OB device mainly comprises parts such as cage, top rifle, feeding device, ladle.With bottom blown gas the molten steel surface is blown open earlier when handling molten steel, forms a no slag zone, the decline cage arrives this no slag zone, in cage molten steel is carried out refining treatment then.Utilize the CAS-OB treatment unit to carry out the steel liquid deoxidation method,, therefore can't avoid completely molten steel is polluted because the reactant and the resultant of deoxygenation all are in the molten steel mainly based on the direct deoxidation of reductor.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 CAS-OB treatment 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 CAS-OB treatment unit that carries out the extra electric field pollution-free deoxidizing is provided.
The utility model is achieved in that the CAS-OB treatment unit of this pollution-free deoxidizing is made up of top rifle, cage, ladle body of heater, slag, molten steel, 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; its anode contacts with slag; negative electrode contacts with molten steel, the ring protection gas pore that is installed on ring protection gas air cleft or is made of several apertures above anodic.Described ring protection gas air cleft or ring protection gas pore link to each other with source of the gas by pipeline; be blown into the oxygen partial pressure of shielding gas to slag and anode contact area, thereby quicken the conduction of velocity of oxonium ion in the slag system with reduction slag and anode contact area.
The described anode of the utility model CAS-OB treatment unit is inlayed on the middle part outer surface that is installed in the taper cage, links to each other with the positive pole of external dc power by lead; Described negative electrode is installed in the lower end of taper cage, links to each other with the negative pole of external dc power by lead.Described anode is made of the metallic conduction stupalith; Described negative electrode is made of pyroceramic, refractory metal or the consumable electrode close with molten steel component.
The utility model is simple in structure, and is reasonable in design, for existing CAS-OB 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 CAS-OB treatment unit.
1 is the top rifle among the figure, and 2 is cage, and 3 is the shielding gas pore, and 4 is anode, and 5 is slag, and 6 is the ladle body of heater, and 7 is negative electrode, and 8 is molten steel, and 9 is bottom-blown air brick, and 10 is direct supply.
Embodiment
The utility model will be further described by embodiment with reference to the accompanying drawings.
From accompanying drawing as can be seen the CAS-OB treatment unit of this pollution-free deoxidizing mainly formed by top rifle 1, cage 2, ladle body of heater 6, slag 5, molten steel 8, bottom-blown air brick 9 and an electric field generation device of forming by direct supply 10, anode 4 and negative electrode 7.Anode 4 is inlayed on the outer surface that is installed in taper cage 2 middle parts, is connected by the positive pole of lead with external dc power 10.On cage 2, inlay among the embodiment and a circle molybdenum pottery is installed as anode 4.Negative electrode 7 is installed in the lower end of taper cage 2, is connected by the negative pole of lead with external dc power 10.Inlay the negative electrode 7 that a circle metal molybdenum conduct is installed among the embodiment in the lower end of cage 2.Cage 2 above the anode 4 is provided with the ring protection gas pore 3 that is made of 6 pores that are symmetrically distributed along circumference.The air inlet port of described ring protection gas pore 3 is drawn with airing system by metal tube and is connected.Specific implementation process is as follows:
Steel scrap 350～400Kg is joined in the multi-functional experimental furnace of simulation CAS-OB a refining unit, treat that steel scrap melts the back fully and adds slag to molten steel 8, the slag add-on is controlled at 2～10Kg in every 100Kg molten steel, after treating that slag melts fully, measure the thickness of slag 5, preferably controlling sinter thickness is 30～150mm, behind slag 5 and molten steel 8 molecular balances, molten steel is carried out thermometric decide the oxygen processing, fall simulation cage 2 then, according to the sinter thickness control cage 2 decline degree of depth, the anode 4 that guarantees lower end, cage 2 outside contact with slag 5 and molten steel 8 contacts of get along well, will guarantee also that simultaneously negative electrode 7 that cage 2 is positioned at the lower end is immersed in 8 li of molten steel fully and the slag 5 of getting along well contacts.By the anode 4 and the negative electrode 7 that place molten steel 8 of external dc power supply by insertion slag 5, applying a direct current voltage is 55～80V then, and electric current is the electric field of 0.1～50A.Apply in the electric field process molten steel is carried out weak argon bottom-blowing stirring, to strengthen the mass transfer of dissolved oxygen in molten steel or molten metal.Controlling the bottom blown gas flow simultaneously is 1～15NL/min ton steel, blows the break layer and causes the molten steel oxygen uptake to prevent that the bottom blown gas flow is excessive.Apply in the electric field process and also will feed the oxygen partial pressure that argon gas is used for reducing slag 5 and anode 4 contact areas, to quicken the conduction of velocity of oxonium ion in the slag system by the ring protection gas pore 3 that is positioned at anode 4 tops.Shield gas flow rate is controlled at 1～10NL/min ton steel, blows the break layer and causes the molten steel oxygen uptake to prevent that shield gas flow rate is excessive.Embodiment 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 CAS-OB treatment 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 | 716×10 -4 | 385 | 61 | Extra electric field is handled 30min voltage 60v, electric current 12A; Argon bottom-blowing flow 5NL/min ton steel top blast argon flow amount 1NL/min ton steel | 176×10 -4 | 75 |
| Embodiment 2 | The ADC steel | 805×10 -4 | 391 | 54 | Extra electric field is handled 19min, voltage 57v, electric current 28A argon bottom-blowing flow 15NL/min ton steel top blast argon flow amount 4NL/min ton steel | 191×10 -4 | 76 |
| Embodiment 3 | The ADC steel | 893×10 -4 | 395 | 55 | Extra electric field is handled 12min, voltage 80v, electric current 45A argon bottom-blowing flow 8NL/min ton steel top blast argon flow amount 9NL/min ton steel | 177×10 -4 | 80 |
Claims (3)
1. the CAS-OB treatment unit of a pollution-free deoxidizing; formed by top rifle, cage, ladle body of heater, slag, molten steel, 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; its anode contacts with slag; negative electrode contacts with molten steel, the ring protection gas pore that is installed on ring protection gas air cleft or is made of several apertures above anodic.
2. CAS-OB treatment unit according to claim 1 is characterized in that inlaying on the middle part outer surface that is installed in the taper cage at described anode, links to each other with the positive pole of external dc power by lead; Described negative electrode is installed in the lower end of taper cage, links to each other with the negative pole of external dc power by lead.
3. CAS-OB treatment unit according to claim 1 and 2 is characterized in that described anode is made of the metallic conduction stupalith, and described negative electrode is made of pyroceramic, refractory metal or the consumable electrode close with molten steel component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201139593U CN201660663U (en) | 2010-02-08 | 2010-02-08 | CAS-OB processing apparatus of pollution-free deoxidation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201139593U CN201660663U (en) | 2010-02-08 | 2010-02-08 | CAS-OB processing apparatus of pollution-free deoxidation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201660663U true CN201660663U (en) | 2010-12-01 |
Family
ID=43231078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201139593U Expired - Fee Related CN201660663U (en) | 2010-02-08 | 2010-02-08 | CAS-OB processing apparatus of pollution-free deoxidation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201660663U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912081A (en) * | 2012-10-23 | 2013-02-06 | 鞍钢股份有限公司 | Method for improving cleanliness of steel by treating molten steel with external electric field |
| CN102978338A (en) * | 2012-11-26 | 2013-03-20 | 北京首钢自动化信息技术有限公司 | Method for automatically controlling CAS (composition adjustment by sealed argon bubbling)-OB (oxygen blowing) |
-
2010
- 2010-02-08 CN CN2010201139593U patent/CN201660663U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102912081A (en) * | 2012-10-23 | 2013-02-06 | 鞍钢股份有限公司 | Method for improving cleanliness of steel by treating molten steel with external electric field |
| CN102978338A (en) * | 2012-11-26 | 2013-03-20 | 北京首钢自动化信息技术有限公司 | Method for automatically controlling CAS (composition adjustment by sealed argon bubbling)-OB (oxygen blowing) |
| CN102978338B (en) * | 2012-11-26 | 2014-10-08 | 北京首钢自动化信息技术有限公司 | Method for automatically controlling CAS (composition adjustment by sealed argon bubbling)-OB (oxygen blowing) |
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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 |