CN201660661U - CAS-OB refining device for pollution-free deoxidation - Google Patents
CAS-OB refining device for pollution-free deoxidation Download PDFInfo
- Publication number
- CN201660661U CN201660661U CN2010201138995U CN201020113899U CN201660661U CN 201660661 U CN201660661 U CN 201660661U CN 2010201138995 U CN2010201138995 U CN 2010201138995U CN 201020113899 U CN201020113899 U CN 201020113899U CN 201660661 U CN201660661 U CN 201660661U
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- Prior art keywords
- molten steel
- anode
- cas
- slag
- deoxidation
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- Expired - Fee Related
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- 238000007670 refining Methods 0.000 title claims abstract description 18
- 238000009850 CAS-OB (composition adjustment by sealed argon bubbling with oxygen blowing) Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 46
- 239000010959 steel Substances 0.000 claims abstract description 46
- 239000002893 slag Substances 0.000 claims abstract description 21
- 230000005684 electric field Effects 0.000 claims abstract description 11
- 239000011449 brick Substances 0.000 claims abstract description 5
- 239000011148 porous material Substances 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000003870 refractory metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 239000000956 alloy Substances 0.000 abstract description 2
- 229910045601 alloy Inorganic materials 0.000 abstract description 2
- 238000013461 design Methods 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 abstract 5
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000009847 ladle furnace Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 16
- 239000007789 gas Substances 0.000 description 10
- 229910052786 argon Inorganic materials 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000007664 blowing Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 238000006392 deoxygenation reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 1
- 239000002131 composite material Substances 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
- -1 oxonium ion Chemical class 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
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The utility model provides a CAS-OB refining device of pollution-free deoxidation, which consists of a conical isolation hood, a ladle furnace body, slag, molten steel, a bottom-blown air brick, and an electric field generating device consisting of a direct current power supply, an anode and a cathode, wherein the anode of the electric field generating device is contacted with the slag, is embedded and installed on the middle peripheral surface of the conical isolation hood and is connected with the anode of an external direct current power supply; the cathode of the conical isolation cover is in contact with molten steel and is arranged at the center of the top of the conical isolation cover; the periphery of the conical isolation cover above the anode is provided with an annular protective gas hole consisting of a plurality of small holes. The utility model discloses simple structure, reasonable in design has increased pollution-free deoxidation function for current CAS-OB refining device, utilizes this device to carry out the deoxidization to the molten steel, and the molten steel deoxidation rate can reach more than 70%, need not to add metal or compound alloy deoxidier, can not generate any deoxidation in the molten steel and mix with, has improved environmental pollution, can practice thrift cost 25 yuan per ton steel, and economic benefits is considerable.
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 taper 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, decline taper cage arrives this no slag zone, in the taper cage molten steel is carried out refining treatment then.Utilize the CAS-OB a refining 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 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 CAS-OB a refining unit that carries out the extra electric field pollution-free deoxidizing is provided.
The utility model is achieved in that the CAS-OB a refining unit of this pollution-free deoxidizing is made up of taper 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, described anode contacts with slag, inlay on the middle part outer surface that is installed in the taper cage, link to each other with the positive pole of external dc power by lead; Described negative electrode contacts with molten steel, is installed on the position of taper taper cage top center place top rifle; The ring protection gas pore that the periphery of taper cage is installed on ring protection gas air cleft or is made of several apertures above anodic.
The described negative electrode of the utility model CAS-OB a refining unit adopts the screw mandrel transmission, and the speed of its lifting and height are by computer monitoring.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 a refining unit.
1 is negative electrode among the figure, and 2 are the taper 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 molten steel, and 8 is bottom-blown air brick, and 9 is direct supply.
Embodiment
The utility model will be further described with reference to the accompanying drawings.
From accompanying drawing as can be seen the CAS-OB a refining unit of this pollution-free deoxidizing mainly formed by taper cage 2, ladle body of heater 6, slag 5, molten steel 7, bottom-blown air brick 8 and an electric field generation device of forming by direct supply 9, anode 4 and negative electrode 1.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 9.On taper cage 2, inlay among the embodiment and a circle molybdenum pottery is installed as anode 4.Negative electrode 1 is made by metal molybdenum, is installed on the position of taper cage 2 top center place top rifles, is connected by the negative pole of lead with external dc power 9.Negative electrode 1 is by the screw mandrel transmission, and the speed of its lifting and height are by computer monitoring.The periphery of taper cage 2 also is installed on ring protection gas air cleft or ring protection gas pore 3 above anode 4.Taper cage 2 above the anode 4 is provided with the ring protection gas pore 3 that is made of 8 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.
During use, blow at slag 5 tops, make slag 5 surfaces form a no slag overlay area, fall taper cage 2 then to no slag overlay area, according to the decline degree of depth of the gauge control cage 2 of slag 5, contact with slag 5 and the molten steel 7 of getting along well contacts with the anode 4 that guarantees cage 2 peripheries.From the position decline negative electrode 1 of top rifle, and control its falling head, it is fully contacted with molten steel 7.By the anode 4 and the negative electrode 1 that place molten steel 7 of external dc power supply 9, apply a direct current electric field then by insertion slag 5.Simultaneously 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 5 and anode 4 contact areas by the ring protection gas pore 3 that is positioned at anode 4 tops, 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 CAS-OB 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, % | |
| |
The ADC steel | 695×10 -4 | 360 | 51 | Extra electric field is handled 32min voltage 55v, electric current 3A; Argon bottom-blowing flow 15NL/min ton steel top blast argon flow amount 8NL/min ton steel | 94×10 -4 | 86 |
| |
The ADC steel | 679×10 -4 | 372 | 65 | Extra electric field is handled 13min, voltage 75v, electric current 20A argon bottom-blowing flow 8NL/min ton steel top blast argon flow amount 4NL/min ton steel | 136×10 -4 | 79 |
| |
The ADC steel | 773×10 -4 | 381 | 63 | Extra electric field is handled 16min, voltage 63v, electric current 47A argon bottom-blowing flow 4NL/min ton steel top blast argon flow amount 1NL/min ton steel | 159×10 -4 | 78 |
Claims (3)
1. the CAS-OB a refining unit of a pollution-free deoxidizing, formed by taper 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, described anode contacts with slag, inlay on the middle part outer surface that is installed in the taper cage, link to each other with the positive pole of external dc power by lead; Described negative electrode contacts with molten steel, is installed on the position of taper cage top center place top rifle; The ring protection gas pore that the periphery of taper cage is installed on ring protection gas air cleft or is made of several apertures above anodic.
2. CAS-OB a refining unit according to claim 1 is characterized in that described negative electrode adopts the screw mandrel transmission, and the speed of its lifting and height are by computer monitoring.
3. CAS-OB a refining 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 |
|---|---|---|---|
| CN2010201138995U CN201660661U (en) | 2010-02-08 | 2010-02-08 | CAS-OB refining device for pollution-free deoxidation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201138995U CN201660661U (en) | 2010-02-08 | 2010-02-08 | CAS-OB refining device for pollution-free deoxidation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201660661U true CN201660661U (en) | 2010-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201138995U Expired - Fee Related CN201660661U (en) | 2010-02-08 | 2010-02-08 | CAS-OB refining device for pollution-free deoxidation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201660661U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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) |
| CN104195293A (en) * | 2014-09-02 | 2014-12-10 | 辽宁科技大学 | Erosion-resistant CAS-OB refining device for dipping cover |
| CN106811575A (en) * | 2015-12-02 | 2017-06-09 | 鞍钢股份有限公司 | Device for improving yield of aluminum after converter and using method |
| 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 |
-
2010
- 2010-02-08 CN CN2010201138995U patent/CN201660661U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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) |
| CN104195293A (en) * | 2014-09-02 | 2014-12-10 | 辽宁科技大学 | Erosion-resistant CAS-OB refining device for dipping cover |
| CN106811575A (en) * | 2015-12-02 | 2017-06-09 | 鞍钢股份有限公司 | Device for improving yield of aluminum after converter and using method |
| 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 |
Granted publication date: 20101201 Termination date: 20160208 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |