CN206028722U - Device of ladle top sediment oxidability is reduced through sediment method of overflowing - Google Patents

Device of ladle top sediment oxidability is reduced through sediment method of overflowing Download PDF

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Publication number
CN206028722U
CN206028722U CN201621012871.6U CN201621012871U CN206028722U CN 206028722 U CN206028722 U CN 206028722U CN 201621012871 U CN201621012871 U CN 201621012871U CN 206028722 U CN206028722 U CN 206028722U
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China
Prior art keywords
slag
adapter
ladle
sediment
overflowing
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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
Application number
CN201621012871.6U
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Chinese (zh)
Inventor
刘洪银
刘成宝
刘超
杨波
刘炳俊
袁鹏举
亓伟伟
郝帅
孙建卫
杨旭
王孝科
江洪广
路峰
王奉县
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Shandong Iron and Steel Group Co Ltd SISG
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Shandong Iron and Steel Group Co Ltd SISG
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Priority to CN201621012871.6U priority Critical patent/CN206028722U/en
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Publication of CN206028722U publication Critical patent/CN206028722U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model belongs to the technical field of the ferrous metallurgy, specifically say, the utility model relates to a device of ladle top sediment oxidability is reduced through sediment method of overflowing and application method. Device of ladle top sediment oxidability is reduced through sediment method of overflowing arranges the sediment ware and describes for the cask including arranging sediment ware and connector, and the bottom cross section is the arc. Fixing device is connected with the connector and is fixed to the steelmaking platform the connector. The utility model discloses solved the too high problem of ladle top sediment oxidability with extremely simple device, the equipment investment is low, easy to realize having unexpected effect.

Description

A kind of device for reducing ladle top slag oxidisability by slag method of overflowing
Technical field
This utility model belongs to technical field of ferrous metallurgy, and specifically, this utility model is related to a kind of by slag method of overflowing Reduce the device of ladle top slag oxidisability.
Background technology
Ladle top slag oxidisability is too high all to be adversely affected to follow-up liquid steel refining process and steel product quality, can cause steel Water rephosphorization, refine white slag slagging are slow, deoxidizer consumes the phenomenons such as excessive, inclusion content in melting steel is excessive.At present under country's converter The quantity of slag is typically greater than 10kg/ ton steel, and in vessel slag, W (FeO+MnO) is typically greater than 15%, and ladle top slag oxidisability is too high more It is that, as converter slag is excessively caused, problem too high for ladle top slag oxidisability at present is generally by following two sides Method process:
1st, it is that these high oxidative slag reductions are fallen, usually takes and add aluminum, Acetylenogen., Si-Ca-Ba etc. in slag The method of deoxidizer is reduced, and this method refining time is longer, costly.
2nd, it is that these slags are got rid of, the ladle that mainly fascinates carries out deslagging, skimmed, used vacuum dreg-sucking machine with Cinder Machine Three kinds of methods of slag absorbing.It is that ladle is fascinated certain angle that the ladle that fascinates carries out deslagging, slag is flowed out from ladle mouth, but ladle top Slag thickness of slag layer is less, about 60mm, when carrying out deslagging operation, molten steel is also poured out by related, and steel technology is big;Take off Slag method is that first ladle is fascinated certain angle, then pulls out slag using Cinder Machine, due to Cinder Machine slag palladium it is less, and slag Viscosity is little, causes slag-removing time longer, about 10 minutes, and iron and steel stock loss is big, about loses iron and steel stock 2kg/ ton steel, and takes off Slag machine equipment high cost, dimensional footprint are big;Slag absorbing method adopts evacuation slag absorbing, and equipment investment is big, and the maintenance of equipment High cost.
CN201333516A discloses a kind of top slag remover of ladle, is provided with by cradle, fascinate hydraulic pressure on buggy ladle The ladle tiling arrangement of cylinder and ladle lock bracket composition.The round bottom activity of cradle is seated in the semicircle watt of buggy ladle top, by it is front, Latter two rotating shaft and connecting plate are fixed on buggy ladle, and rotate company by bearing pin with the hydraulic cylinder cylinder rod being arranged on buggy ladle Connect.The ladle for being provided with excessive cinder notch is reinforced by lock bracket.Due to pushing up slag good fluidity, therefore steel is made when hydraulic cylinder cylinder rod pushes cradle When bag is inclined, the most of top slag in ladle top can be flowed out from excessive cinder notch, and the top slag stayed in molten steel then greatly reduces, from And the difficulty that top slag is modified is reduced, top impact of the slag to steel quality is reduced to greatest extent, but as first furnace is put After steel, ladle top slag thickness of slag layer is less, about 60mm, and does not make the device that slag blanket thickens during deslagging, is fallen During slag operation, molten steel is easily caused also to be poured out by related, steel technology is big.
CN204490931U discloses that a kind of LF-VD is special to drag for slag pan, belongs to LF-VD equipment technical fields, for reducing Slag in refine bag.Its technical scheme is:It includes disk body and hanger, and disk body is uniform semicircular arc, two hangers pair Title is fixed on the two ends of disk body diameter, and another hanger is located at the centre position of two hangers, and three hangers are vertically fixedly connected On the edge of disk body, external diameter and the intracavity diameter of refine bag of disk body match.This utility model reduces essence in refine bag Refining thickness of slag layer, reduces the labor intensity of workman, improves the production efficiency of VD, it is ensured that the refine degassing quality of molten steel, And the danger of the slag that overflows in substantially reducing VD processing procedures, improve the safety coefficient in refining process.Using of the present utility model The average disposable ladle slag blanket amount of refine bag reduces 60-100mm, and the VD production cycles shorten to original 80%, and workman's work is strong Degree and energy-output ratio can be down to the 90% of former frock moulding, and the method strictly need to control to drag for the gradient of slag pan, prevent steel Water is flowed into and is dragged in slag pan, and the method is applied to the LF refining later stage, is used (more than 200mm) when slag thickness is thicker, for When slag slag is thick relatively thin and do not apply to, when slag blanket is relatively thin, dragging for slag pan bottom, to discharge molten steel more so that drags for the buoyancy that slag pan is subject to Increase, can produce drag for slag pan drag for less than slag phenomenon occur.
The content of the invention
For solving the deficiencies in the prior art, this utility model provides a kind of by slag method reduction ladle top slag oxidisability of overflowing Equipment.By the equipment for inserting a large volume in molten steel so that the liquid level of molten steel and slag rises so that slag is from ladle On excessive cinder notch overflow, as bulky equipment has tied up the space surface of slag so that 2-3 times of slag slag thick increase, excessive slag During molten steel loss it is less.
This utility model provides a kind of device for reducing ladle top slag oxidisability by slag method of overflowing, as shown in figure 1, described logical The device for crossing slag method reduction ladle top slag oxidisability of overflowing includes slag-discharging device (1), and slag-discharging device (1) is barrel-shaped, and bottom cross section is Arc.
The radian and height of the arc is not limited, and those skilled in the art can design arc according to actual needs Radian and height, more smoothly insert the requirement in ladle to meet slag-discharging device.
Preferably, the outer lining of slag-discharging device (1) by conventional refractory material layings such as magnesium chromium matter, magnesium carbonaceous, magnalium matter or Ramming is formed, and inwall material is steel plate.
Preferably, 30-90% of the external diameter of slag-discharging device (1) for ladle internal diameter, wall thickness is 50-1000mm.
Preferably, the device for reducing ladle top slag oxidisability by slag method of overflowing also includes adapter (2), adapter (2) be a circular tube shaped device, the internal diameter of adapter (2) is identical with the internal diameter of slag-discharging device (1);The external diameter of adapter (2) and row The external diameter of slag device (1) is identical, and adapter (2) is fixedly connected on slag-discharging device (1) top.Preferably, the outer wall material of adapter (2) For steel plate, liner is formed using the conventional refractory material layings such as magnesium chromium matter, magnesium carbonaceous, magnalium matter or ramming.
Preferably, slag-discharging device (1) and adapter (2) are connected by flange.Flange is respectively welded at slag-discharging device (1) and connection On device (2).
Preferably, the device for reducing ladle top slag oxidisability by slag method of overflowing also includes fixing device (3), fixed dress Put (3) adapter (2) connection and adapter (2) is fixed on steel smelting platform (4).
Preferably, the material of fixing device (3) is steel plate.
Specific implementation method:
Specific implementation method as shown in Fig. 2 wherein 1 be bottom for arc barrel-shaped device, 2 for a circular tube shaped dress Put, 1 and 2 are connected by the flange for welding thereon, and 3 is fixing device, and material is steel plate, plays a part of to be fixed on 42,4 For steel smelting platform, 5 ladles, 6 is molten steel, and 7 is ladle trolley, and 8 is buggy ladle hydraulic means, plays a part of to lift ladle, and 9 are Slag basin, 10 is the excessive cinder notch on ladle, and 11 is slag.
Alloy and deoxidizer is not added with converter tapping process, and after converter tapping, ladle top slag slag beneficiation is strong, temperature Height, slag fluidity are good.The device that ladle top slag oxidisability is reduced by slag method of overflowing described in the utility model is fixed to steel-making Ladle after converter tapping is finished, is transported to excessive slag station, starts the hydraulic means 8 on buggy ladle, make ladle by platform lower at once Rise, barrel-shaped device 1 of the bottom for arc is headed in molten steel, liquid steel level rises, drive slag liquid level to rise, and Device 1 ties up the surface area of slag so that slag slag is thick to become big, when slag liquid level rises to excessive more than 10 liquid level of cinder notch, slag Can be spilled in slag basin 9 from excessive cinder notch, after slag overflows only, ladle is fallen using device 8, then ladle is transported to from excessive slag station Refine station carries out follow-up refining operation.
During excessive slag, due to work under bad environment, the life-span is about 200 heats to device 1, when device 1 reaches service life Afterwards, the device 1 for more renewing, and coupled together by the flange and original device 2 that weld thereon.
Advantage of the present utility model:
1st, this method can overflow in ladle top slag more than 70% slag fall, and be conducive to the fast short-term training white slag of refining furnace, Deoxidizer consumption is reduced, steel quality is improved.
2nd, the excessive slag operation time is short, less than 3 minutes, saves process treatment time, and the outer lining of device 1 is refractory material, hot Conductance is low, overflows during slag, and device 1 heats up slowly, and molten steel temperature drop is little.
3rd, this utility model equipment investment is little, and during use, only device 1 is easy consumptive material, after reaching service life, only More changing device 1 just can be so that cost of equipment maintenance is low.
The extremely simple device of this utility model solves the problems, such as that ladle top slag oxidisability is too high, equipment investment is low, Easily realize, tool has an unexpected effect.
Description of the drawings
Fig. 1 is the apparatus structure schematic diagram for reducing ladle top slag oxidisability by slag method of overflowing that this utility model is provided.
Fig. 2 be this utility model provide showing during the device use of ladle top slag oxidisability is reduced by the slag method of overflowing It is intended to.
Specific embodiment
Embodiment 1:
A set of as shown in Figure 1 device for reducing ladle top slag oxidisability by slag method of overflowing is made, device includes slag-discharging device 1, slag-discharging device 1 is barrel-shaped, and bottom cross section is arc.The wherein external diameter of slag-discharging device 1 for ladle internal diameter 70%, wall thickness is 100mm, the outer lining magnesite-chrome brick of the circular tube shaped part of slag-discharging device 1 build by laying bricks or stones and form, and inwall material is steel plate.Lower arcuate surface part Outer lining is formed using refractory magnesia-alumina material ramming, and described device also includes adapter 2, and adapter 2 is the device of a circular tube shaped, The internal diameter of adapter 2 is identical with the internal diameter of slag-discharging device 1;The external diameter of adapter 2 is identical with the external diameter of slag-discharging device 1, adapter 2 it is interior Shirt portion point is built by laying bricks or stones with magnesite-chrome brick and is formed, and toasts slag-discharging device 1 and adapter 2, after removing moisture content, slag-discharging device 1 and adapter 2 is passed through After the flange for welding thereon is coupled together, come into operation.Described device also includes fixing device 3, and the material of fixing device 3 is steel Plate, fixing device 3 are connected with adapter 2 and adapter 2 are fixed on steel smelting platform 4.
Specific implementation method as shown in Fig. 2 wherein 1 be bottom for arc barrel-shaped device, 2 for a circular tube shaped dress Put, 1 and 2 are connected by the flange for welding thereon, and 3 is fixing device, and material is steel plate, plays a part of to be fixed on 42,4 For steel smelting platform, 5 ladles, 6 is molten steel, and 7 is ladle trolley, and 8 is buggy ladle hydraulic means, plays a part of to lift ladle, and 9 are Slag basin, 10 is the excessive cinder notch on ladle, and 11 is slag.Alloy and deoxidizer is not added with converter tapping process, and converter tapping is finished Afterwards, ladle is transported to into excessive slag station at once, starts the hydraulic means 8 on buggy ladle, ladle is increased, by the circle that bottom is arc The slag-discharging device 1 of tubbiness is headed in molten steel, and liquid steel level rises, and drives slag liquid level to rise, and slag-discharging device 1 ties up the table of slag Area so that slag slag is thick to become big, and when slag liquid level rises to excessive more than 10 liquid level of cinder notch, slag can be spilled over to slag from excessive cinder notch In basin 9, slag overflow it is net after, fall ladle using device 8, then by ladle from excessive slag station be transported to refine station carry out it is follow-up Refining operation.Entirely excessive slag process about 3 minutes, can overflow in ladle top slag more than 80% slag fall, reduce deoxidizer 30% is consumed, 3 yuan/ton of steel of production cost are reduced, refine white slag sludging time is reduced by 4 minutes, and inclusion content of casting blank is reduced 10%.
Embodiment 2
Other with embodiment 1, difference are:
The outer lining of the slag-discharging device 1 is built by laying bricks or stones by magnesia brick and is formed, and inwall material is steel plate.The external diameter of the slag-discharging device 1 is steel The 30% of bag internal diameter, wall thickness are 50mm.The outer wall material of adapter 2 is steel plate, and liner built by laying bricks or stones using magnesia brick and formed.Entirely overflow slag Process about 4 minutes, can overflow in ladle top slag more than 70% slag fall, and reduce deoxidizer and consume 25%, reduce production 2.5 yuan/ton of steel of cost, refine white slag sludging time are reduced by 3 minutes, and inclusion content of casting blank reduces by 8%.
Embodiment 3
Other with embodiment 1, difference are:
The outer lining of the slag-discharging device 1 is formed by magnalium brick masonry, and inwall material is steel plate.The external diameter of the slag-discharging device 1 is The 90% of ladle internal diameter, wall thickness are 500mm.The outer wall material of adapter 2 is steel plate, and liner formed using magnalium brick masonry.It is whole Individual excessive slag process about 2 minutes, can overflow in ladle top slag more than 85% slag fall, and reduce deoxidizer and consume 40%, drop 4 yuan/ton of steel of low production cost, refine white slag sludging time are reduced by 5 minutes, and inclusion content of casting blank reduces by 13%.
Embodiment 4
Other with embodiment 1, difference are:
The outer lining of the slag-discharging device 1 is formed by magnesia carbon refractory ramming, and inwall material is steel plate.The slag-discharging device 1 External diameter for ladle internal diameter 80%, wall thickness is 900mm.The outer wall material of adapter 2 is steel plate, and liner adopts refractory magnesia-alumina Material ramming is formed.Entirely excessive slag process about 2 minutes, can overflow in ladle top slag more than 85% slag fall, and reduce de- Oxygen agent consumes 40%, reduces by 4 yuan/ton of steel of production cost, and refine white slag sludging time is reduced by 5 minutes, inclusion content of casting blank Reduce by 12%.

Claims (7)

1. a kind of device for reducing ladle top slag oxidisability by the slag method of overflowing, it is characterised in that described that steel is reduced by slag method of overflowing The device of bag top slag oxidizing includes slag-discharging device(1), slag-discharging device(1)For barrel-shaped, bottom cross section is arc.
2. device as claimed in claim 1, it is characterised in that the slag-discharging device(1)External diameter for ladle internal diameter 30-90%, Wall thickness is 50-1000mm.
3. device as claimed in claim 1 or 2, it is characterised in that described that ladle top slag oxidisability is reduced by slag method of overflowing Device also includes adapter(2), adapter(2)For the device of a circular tube shaped, adapter(2)Internal diameter and slag-discharging device(1)It is interior Footpath is identical;Adapter(2)External diameter and slag-discharging device(1)External diameter it is identical, adapter(2)It is fixedly connected on slag-discharging device(1)Top.
4. device as claimed in claim 3, it is characterised in that slag-discharging device(1)And adapter(2)Connected by flange;Flange It is respectively welded at slag-discharging device(1)And adapter(2)On.
5. device as claimed in claim 3, it is characterised in that slag-discharging device(1)And adapter(2)Connected by flange;Flange It is respectively welded at slag-discharging device(1)And adapter(2)On.
6. device as claimed in claim 3, it is characterised in that the device for reducing ladle top slag oxidisability by slag method of overflowing Also include fixing device(3), fixing device(3)Adapter(2)Connection is simultaneously adapter(2)It is fixed to steel smelting platform(4)On.
7. device as claimed in claim 6, it is characterised in that fixing device(3)Material be steel plate.
CN201621012871.6U 2016-08-31 2016-08-31 Device of ladle top sediment oxidability is reduced through sediment method of overflowing Expired - Fee Related CN206028722U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106111970A (en) * 2016-08-31 2016-11-16 山东钢铁股份有限公司 A kind of device and method being reduced ladle top slag oxidisability by excessive slag method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106111970A (en) * 2016-08-31 2016-11-16 山东钢铁股份有限公司 A kind of device and method being reduced ladle top slag oxidisability by excessive slag method

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CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20170322

Termination date: 20190831