CN104195293A - Erosion-resistant CAS-OB refining device for dipping cover - Google Patents
Erosion-resistant CAS-OB refining device for dipping cover Download PDFInfo
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- CN104195293A CN104195293A CN201410445962.8A CN201410445962A CN104195293A CN 104195293 A CN104195293 A CN 104195293A CN 201410445962 A CN201410445962 A CN 201410445962A CN 104195293 A CN104195293 A CN 104195293A
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- impregnating cover
- dipping cover
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Abstract
The invention provides an erosion-resistant CAS-OB refining device for a dipping cover. The service life of the dipping cover can be prolonged, the production cost is reduced, and the refining efficiency is improved. The erosion-resistant CAS-OB refining device for the dipping cover provided by the invention comprises a dipping cover, a dipping cover lifting device, an oxygen lance, an alloy material chute, slag, a steel ladle and perforated bricks, and is characterized by also comprising a motor, a transmission shaft, a gear and a concave-convex connection buckle, wherein the upper part of the dipping cover is a fixed part, and the lower part of the dipping cover is a rotating part, and the two parts are connected by virtue of the concave-convex connection buckle. According to the erosion-resistant CAS-OB refining device provided by the invention, the structure of the CAS-OB dipping cover is changed, the asymmetric erosion degree of the dipping cover is alleviated, the utilization rate and operation rate of equipment are improved, the refining cycle is shortened, and the aim of prolonging the service life of the dipping cover is achieved.
Description
Technical field
The invention belongs to metallurgical industry furnace outer refining technology field, relate to CAS-OB a refining unit, particularly the erosion resistant CAS-OB a refining unit of a kind of impregnating cover.
Background technology
CAS (Composition Adjustment by Sealed Argon Bubbling, being the adjustment of sealed argon-blowing alloying constituent) refining techniques is Yawata technical institute of nippon company in an easy furnace outer refining process of exploitation in 1975, progressively applies from phase late 1980s.CAS-OB refinery practice grows up on CAS refinery practice basis.
CAS technique is to utilize high strength ladle argon bottom-blowing, and above argon blowing hole, molten steel surface forms Yi Gewuzha district, and CAS impregnating cover is inserted to molten steel Wu Zha district, makes to be closed state in cover, and argon gas forms inert atmosphere above molten steel in cover.Alloy adds from CAS impregnating cover top, without slag, directly enters molten steel, and under inert atmosphere alloying, yield of alloy is high and stable.CAS-OB sets up top oxygen gun blowing on the basis of CAS Technology in impregnating cover, the aluminium adding in utilization cover or ferrosilicon react institute's liberated heat and directly molten steel are heated with oxygen, its objective is converter molten steel is rapidly heated, the temperature drop of compensation CAS method operation, for the molten steel in tundish provides target temperature accurately, make converter and continuous casting cooperation.Residual a small amount of ladle slag still in impregnating cover in operating process, impregnating cover internal surface contacts with refining slag with high-temperature molten steel, except be subject to molten steel wash away with slag action, be also subject to impact that top blowing oxygen heats up etc.; Impregnating cover outside surface is mainly subject to washing away of refining scouring and high-temperature molten steel.
Existing common CAS-OB impregnating cover is fixed on lifting device, can only move up and down along with lifting device, in refining process, can not rotate, and cannot guarantee that the symmetry of self corrodes, and work-ing life is short.
Chinese patent is (bulletin) number: CN102978338A openly, discloses the autocontrol method of a kind of CAS-OB, adopts secondary to control software, and the lower cover control process of the lower cover control process of temperature-rise period, reinforced process is standardized.By secondary, control software and one-level automation control system data communication, realize the automatic control of lower cover.Secondary is controlled software and is issued after control signal, and one-level automation control system executive control program is realized automatically and being controlled, and meets the accurate control of target liquid steel temperature and composition.Advantage is that production standard, automatization level are high.This control method is not mentioned rotation how to control impregnating cover, and the asymmetric erosion degree of impregnating cover does not alleviate.
Open (bulletin) number: the CN201660661U of Chinese patent, a kind of CAS-OB a refining unit of pollution-free deoxidizing is disclosed, this device is comprised of taper impregnating cover, ladle body of heater, slag, molten steel, bottom-blown air brick, also is furnished with an electric field generation device being formed by direct supply, anode and negative electrode, its anode contacts with slag, inlay on the middle part outer surface that is arranged on taper impregnating cover, be connected with the positive pole of external dc power; Its negative electrode contacts with molten steel, is installed in taper impregnating cover top center place; Above anode, the periphery of cone-shaped hood is installed on the ring protection gas orifice consisting of several apertures.This apparatus structure is simple, reasonable in design, for existing CAS-OB a refining unit has increased pollution-free deoxidizing function, utilize this device to carry out deoxidation to molten steel, deoxidation of molten steel rate can reach more than 70%, without adding metal or composite alloy reductor, can in molten steel, not generate any deoxidation and be mingled with, improved environmental pollution.This device is not mentioned the rotation of impregnating cover yet, can not alleviate the asymmetric erosion of impregnating cover in CAS-OB technique, can not extend the work-ing life of impregnating cover.
Open (bulletin) number: the CN201530837U of Chinese patent, discloses a kind of CAS-OB cleaning apparatus, and this installs by next part dust hood, and CAS covers companionway, CAS cover, and upper dust gathering arrester, suction port, hybrid channel, sealing gland, tremie pipe and OB rifle form; Next part dust hood is arranged on the bottom of service platform, CAS companionway install respectively up and down dust gathering arrester and next part dust hood, on the top of upper dust gathering arrester and hybrid channel, open suction port simultaneously; Sealing gland is installed on hybrid channel.This patent advantage is, the flue gas that steel treatment process produces can effectively be collected, and flue gas enters the dust gathering arrester on top by the CAS cover companionway on service platform, and suction port is at the top of dust gathering arrester, make full use of the characteristic that flue gas moves upward, flue dust is sent into purification system.This device is not mentioned the work-ing life that extends impregnating cover by the rotation of impregnating cover yet.
Open (bulletin) number: the CN102876848A of Chinese patent, disclose a kind of preliminary melting type calcium aluminate of applying and carried out the method that low-sulfur steel is produced in CAS-OB refining, propose a kind of preliminary melting type calcium aluminate of applying and carried out the method that CAS-OB molten steel furnace external refining is produced low-sulfur steel, the method mainly comprises: converter tapping, the dark desulfurization of CAS-OB refining furnace (all will carry out Argon stirring to molten steel in whole refining desulfuration process), skim, refining, Alloying Treatment and continuous casting.Use the method to carry out dark desulfurization, desulfurization degree can reach more than 85%, sulphur content in molten steel can be stablized and is controlled at below 0.002%, and desulfuration efficiency is high and stable.Compared with prior art, simple to operate, sweetening effectiveness is stablized, and does not affect rhythm of production.The sweetening agent using is the calcareous pre-melted refining slag of aluminium, in its manufacturing processed, adopted high-temperature fusion processing, the feature with even, the low fluorine of composition, low melting point, can realize Fast Slag Melting, reach the object of desulfurization rapidly, and reduced the pollution to environment, but do not extend the work-ing life of impregnating cover.
Summary of the invention
The invention provides the erosion resistant CAS-OB a refining unit of a kind of impregnating cover, can extend the work-ing life of impregnating cover, reduce production costs, improve refining efficiency.
The erosion resistant CAS-OB a refining unit of a kind of impregnating cover provided by the invention comprises: impregnating cover, impregnating cover lifting device, oxygen rifle, alloy material skewed slot, slag, ladle and perforated brick, it is characterized in that this device also comprises: electric motor, transmission shaft, gear, concavo-convex connector link, described impregnating cover top is fixed part, bottom is rotating part, concavo-convex connector link is carved with in the junction of upper and lower, concavo-convex connector link top divides impregnating cover non-rotatable, lower part impregnating cover is rotatable, these two parts connect by concavo-convex connector link, electric motor is fixed on impregnating cover lifting device, electric motor connects a transmission shaft, electric motor rises and declines together with impregnating cover with transmission shaft, impregnating cover rotating part outside surface is carved with screw thread, with the gear engagement on transmission shaft, by transmission shaft, by motor drive, rotated.By the rotation of impregnating cover, alleviated asymmetric erosion.
The present invention compares with existing same device, and its significant beneficial effect is embodied in:
The present invention, by changing the structure of CAS-OB impregnating cover, alleviates the asymmetric erosion degree of impregnating cover, has improved utilization ratio, the operating rate of equipment, has shortened refining cycle, has reached and has extended the impregnating cover object in work-ing life.
Accompanying drawing explanation
Fig. 1 is the erosion resistant CAS-OB a refining unit of a kind of impregnating cover structural representation.
Fig. 2 is impregnating cover fixed part and rotating part convex-concave connection fastener structure schematic diagram in the erosion resistant CAS-OB a refining unit of a kind of impregnating cover.
Embodiment
As Fig. 1, shown in Fig. 2, the erosion resistant CAS-OB a refining unit of a kind of impregnating cover is by electric motor 1, transmission shaft 2, gear 3, concavo-convex connector link 4 impregnating covers 5, impregnating cover lifting device 6, oxygen rifle 7, alloy material skewed slot 8, slag 9, ladle 10 and perforated brick 11, form, described impregnating cover 5 tops are that fixed part bottom is rotating part, concavo-convex connector link 4 is all carved with in junction, upper and lower, concavo-convex connector link 4 tops divide impregnating cover 5 non-rotatable, bottom divides impregnating cover 5 rotatable, fixed part is connected by concavo-convex connector link 4 with rotating part, electric motor 1 is fixed on impregnating cover lifting device 6, electric motor 1 connects a transmission shaft 2, electric motor 1 rises and declines together with impregnating cover with transmission shaft 2, impregnating cover 5 rotating part outside surfaces are carved with screw thread, with gear 3 engagements on transmission shaft 2, by transmission shaft 2, by electric motor 1, drive rotation.By the rotation of impregnating cover 5, alleviated asymmetric erosion.
Claims (1)
1. the erosion resistant CAS-OB a refining unit of impregnating cover comprises: impregnating cover, impregnating cover lifting device, oxygen rifle, alloy material skewed slot, slag, ladle and perforated brick, it is characterized in that this device also comprises: electric motor, transmission shaft, gear, concavo-convex connector link, described impregnating cover top is fixed part, bottom is rotating part, concavo-convex connector link is carved with in the junction of upper and lower, fixed part is connected by concavo-convex connector link with rotating part, electric motor is fixed on impregnating cover lifting device, electric motor connects a transmission shaft, electric motor rises and declines together with impregnating cover with transmission shaft, impregnating cover rotating part outside surface is carved with screw thread, with the gear engagement on transmission shaft, by transmission shaft, by motor drive, rotated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410445962.8A CN104195293A (en) | 2014-09-02 | 2014-09-02 | Erosion-resistant CAS-OB refining device for dipping cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410445962.8A CN104195293A (en) | 2014-09-02 | 2014-09-02 | Erosion-resistant CAS-OB refining device for dipping cover |
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| CN104195293A true CN104195293A (en) | 2014-12-10 |
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| CN201410445962.8A Pending CN104195293A (en) | 2014-09-02 | 2014-09-02 | Erosion-resistant CAS-OB refining device for dipping cover |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104928436A (en) * | 2015-07-02 | 2015-09-23 | 首钢总公司 | Layout method for preventing oxidation of dust collector in ladle refining treatment process |
| CN106702082A (en) * | 2015-11-17 | 2017-05-24 | 鞍钢股份有限公司 | Method for increasing use times of dipping hood of ANS refining furnace |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201530837U (en) * | 2009-10-28 | 2010-07-21 | 河北省首钢迁安钢铁有限责任公司 | CAS-OB dedusting device |
| CN201660661U (en) * | 2010-02-08 | 2010-12-01 | 鞍钢股份有限公司 | CAS-OB refining device for pollution-free deoxidation |
| CN203235962U (en) * | 2013-04-02 | 2013-10-16 | 辽宁科技大学 | Steel ladle with rotatable blowing position at bottom part |
-
2014
- 2014-09-02 CN CN201410445962.8A patent/CN104195293A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201530837U (en) * | 2009-10-28 | 2010-07-21 | 河北省首钢迁安钢铁有限责任公司 | CAS-OB dedusting device |
| CN201660661U (en) * | 2010-02-08 | 2010-12-01 | 鞍钢股份有限公司 | CAS-OB refining device for pollution-free deoxidation |
| CN203235962U (en) * | 2013-04-02 | 2013-10-16 | 辽宁科技大学 | Steel ladle with rotatable blowing position at bottom part |
Non-Patent Citations (1)
| Title |
|---|
| 胡世平 等: "《短流程炼钢用耐火材料》", 30 June 2001, 冶金工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104928436A (en) * | 2015-07-02 | 2015-09-23 | 首钢总公司 | Layout method for preventing oxidation of dust collector in ladle refining treatment process |
| CN106702082A (en) * | 2015-11-17 | 2017-05-24 | 鞍钢股份有限公司 | Method for increasing use times of dipping hood of ANS refining furnace |
| CN106702082B (en) * | 2015-11-17 | 2018-06-26 | 鞍钢股份有限公司 | Method for increasing use times of dipping hood of ANS refining furnace |
| 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 |
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Application publication date: 20141210 |