CN106222341A - A kind of stainless steel slag slow cooling method and device - Google Patents
A kind of stainless steel slag slow cooling method and device Download PDFInfo
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- CN106222341A CN106222341A CN201610826783.8A CN201610826783A CN106222341A CN 106222341 A CN106222341 A CN 106222341A CN 201610826783 A CN201610826783 A CN 201610826783A CN 106222341 A CN106222341 A CN 106222341A
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- slag
- slow cooling
- mobile cover
- casting
- shower water
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
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Abstract
The present invention provides a kind of stainless steel slag slow cooling processing method and processing device, and the method will be equipped with the slag pot tipping of slag in slow cooling unit, then carries out dynamic shower water, and, the most persistently dust removal state；After persistently spraying the default time, carry out slag stirring operation；After having stirred, proceeding dynamically to spray operation, wherein, if smelting slag, after completion of stirring, continuing dynamic shower water 24～36 hours.If the remaining slag of casting, after completion of stirring, continue dynamic shower water 16～24 hours.Stainless steel slag slow cooling processing means includes slow cooling unit, mobile cover, each mobile cover is all integrated with spray facility, dedusting pipeline such that it is able to spraying cooling water dynamic to the slag in slow cooling unit and carry out dedusting.This invention can overcome the deficiency that production environment is severe, environmental protection cost is high of conventional stainless steel slag nature slow cooling, and the source difference being also directed to stainless steel slag chooses different retarded cooling process, and rational technology is efficient.
Description
Technical field
The present invention relates to slag processing field, specifically, relate to a kind of stainless steel slag slow cooling method and device.
Background technology
2015, China's rustless steel crude steel yield reached 2156.22 × 104T/a, pre-capita consumption about 16kg, basically reach
The per capita consuming level of developed country.Estimate according to the quantity of slag (including electric furnace, AOD furnace slag etc.) often producing 1t rustless steel generation 20%
Calculating, within 2015, China's stainless steel slag is 431.24 × 104t/a。
Tenor about 10% in slag according to statistics.Containing the valuable rare heavy metal such as nickel, chromium in stainless steel slag, such as place
Manage and improper be likely to result in serious environmental pollution, so the metal reclaimed in stainless steel slag, it is achieved stainless steel slag resource
Regeneration is the major issue that iron and steel enterprise faces.
Stainless steel slag retarded cooling process be stainless steel slag process first operation, the environment protecting of slag slow cooling and point
It is that each enterprises of producing stainless steel is paid close attention to from effect.In stainless steel slag processing procedure, in order to accelerate slag cooling and
Slag ladle turnaround speed, iron and steel enterprise typically uses the method for cooling of fetching water, owing to during fetching water, water can be along with top of the slag crack
Penetrating into inside slag, under the effect of high temperature, water is converted into steam volumetric expansion, will spray along slag crack, no
Meeting efflorescence in rust slag cooling procedure, along with steam ejection air-flow flies away in the air, environmental pollution phenomenon is extremely serious, seriously
Affect the environment of operation field.
At present, domestic main rustless steel manufacturer, according to electroslag in stainless steel slag and the characteristic of AOD furnace slag, takes
Different slag retarded cooling process, is generally divided into the process technique of two kinds of forms: (1) manually sprinkles water, and is not provided with dust removal installation；(2)
Artificial watering, arranges removing roof dust facility.The former can not meet environmental requirement, and production environment is severe；The latter uses Wind Volume to remove
Dirt facility, not only increases plant and equipment investment, and improves the cost of production run.Environmental conservation at present and steel mill
The strict demand of production cost, the slag retarded cooling process of both routines can not meet production requirement the most.
This invention can overcome the deficiency that production environment is severe, environmental protection cost is high of conventional stainless steel slag nature slow cooling, also
Source difference for stainless steel slag chooses different retarded cooling process, has higher economic benefit and social benefit.
Summary of the invention
The invention provides a kind of stainless steel slag slow cooling method and device, so that slag slow cooling cost reduces, strengthens and delay
Cold dust removing effects.
According to an aspect of the invention, it is provided a kind of stainless steel slag slow cooling processing method, will be equipped with rustless steel steel
The slag pot tipping of slag, in slow cooling unit, then carries out dynamic shower water operation, and, at slag pot tipping and dynamic shower water
During, keep continuing dedusting；After persistently spraying the default time, carry out slag stirring operation；After having stirred, proceed
Dynamically spraying operation, wherein, if smelting slag, after completion of stirring, continuing dynamic shower water 24～36 hours, if casting is remaining
Slag, after completion of stirring, continues dynamic shower water 16～24 hours.
Preferably for the remaining slag of casting, before tumbling, need first dynamic shower water cooling 8～12 hours in slag ladle.
Preferably, after slag pot tipping, the Preset Time persistently sprayed is 1 hour.
Preferably, a use armful tank car is tumbled after slag ladle, and slag ladle of tumbling, and embraces a tank car and stops 2～4 points in slow cooling unit
Clock.
According to another aspect of the present invention, it is provided that a kind of stainless steel slag slow cooling processing means, including multiple slow cooling
Unit, each slow cooling unit is the structure of the closing formed by coaming plate, slag door and mobile cover, closes by controlling slag door
Or open slow cooling unit；Mobile cover, described mobile cover is arranged on the top of each slow cooling unit translatablely so that mobile cover exists
Working position and wait position switch over, and each mobile cover are all integrated with spray facility, dedusting pipeline such that it is able to slow cooling list
Slag dynamic spraying cooling water in unit and carry out dedusting, different according to pending slag, described mobile cover divides into again smelting
Steelmaking slag mobile cover and the remaining slag mobile cover of casting, smelt slag mobile cover and the remaining slag mobile cover of casting respectively according to respective speed
Parameter is run.
Preferably, smelt slag mobile cover and at working position and wait that between position, the translational speed of switching is 10～15m/min,
The remaining slag mobile cover of casting is at working position and waits that between position, the translational speed of switching is 10m/min.
Preferably, any one mode in motor, elevator or hydraulic pressure is used to drive mobile cover to move horizontally.
Preferably for smelting slag slow cooling, control to smelt slag mobile cover and move to working position, will be equipped with smelting slag
Slag pot tipping at slow cooling unit, then smelt slag mobile cover and carry out dynamic shower water operation, and, at slag pot tipping and
Dynamically during shower water, smelt slag mobile cover and remain lasting dedusting；Persistently spray is after 1 hour, carries out slag stirring
Operation；After having stirred, continue dynamic shower water 24～36 hours, to complete slow cooling.
Preferably for the remaining slag slow cooling of casting, control the remaining slag mobile cover of casting and move to working position, will be equipped with casting remaining slag
Slag ladle be placed in slow cooling unit, dynamic shower water 8～after 12 hours in slag ladle, by slag pot tipping in slow cooling unit,
Then the remaining slag mobile cover of casting carries out dynamic shower water operation, and, during slag pot tipping and dynamic shower water, casting is remaining
Slag mobile cover continues dedusting all the time；After persistently spray is 1 hour, carry out slag stirring operation；After having stirred, continue dynamically
Shower water 16～24 hours, complete slow cooling.
Preferably, described slag door is additionally provided with dust-break bar.
Accompanying drawing explanation
Being described embodiment by combining accompanying drawings below, the features described above of the present invention and technological merit will become
More clear and easy to understand.
Fig. 1 is the schematic diagram representing the stainless steel slag slow cooling processing means that the present embodiments relate to；
Fig. 2 is the sectional view of the line A-A cutting along Fig. 1.
Detailed description of the invention
The embodiment of stainless steel slag slow cooling method and device of the present invention is described below with reference to the accompanying drawings.Ability
The those of ordinary skill in territory will be consequently realised that, in the case of without departing from the spirit and scope of the present invention, can use various difference
Mode or a combination thereof described embodiment is modified.Therefore, accompanying drawing and description are the most illustrative, and not
It is for limiting scope of the claims.Additionally, in this manual, accompanying drawing draws not in scale, and identical attached
Figure labelling represents identical part.
The present invention provides a kind of stainless steel slag slow cooling processing means.As shown in Figure 1 and Figure 2, at this stainless steel slag slow cooling
Reason device includes multiple slow cooling unit in one line, and each slow cooling unit can also be separately located certainly.Wherein, each slow cooling
Unit all forms the slow cooling space of all round closure by coaming plate 7 and slag door 6.In order to have better seal effect, Ke Yi
Dust-break bar 14, the most multiple bar plastic cloth hung down from doorframe are set on slag door.Can translate with Electronic control slag door 6
Close or open slow cooling unit.Slow cooling unit divides into smelting slag slow cooling unit according to function difference again and the remaining slag of casting delays
Cold unit, pending slag is i.e. to process in each slow cooling unit.Slow cooling unit includes mobile cover, dedusting pipeline 10, removes
The equipment such as dirt facility 11, spray facility 13, wherein dust removal installation 11 can be such as wet dedusting facility.Mobile cover is movably
It is arranged on the top in the space that coaming plate 7 surrounds, forms the slow cooling space closed.Spray facility 13, dedusting pipeline 10 are integrated in shifting
On dynamic cover, dedusting pipeline and wet dedusting facility 11 on each mobile cover connect, and the dust of discharge is discharged from chimney 12.Therefore
Mobile cover has the dual function of spray and dedusting, uses motor to drive mobile cover to move horizontally so that mobile cover can be in work
Make position and wait that position switches over, at working position spraying cooling dynamic to the slag in slow cooling unit water (discontinuously spray).But
The present embodiment is not limited to the drive form of mobile cover, for example, it is also possible to use elevator, hydraulic pressure or other forms.This
The mobile cover smelted on slag slow cooling unit is referred to as smelting slag mobile cover 5 by place, by the movement on remaining for casting slag slow cooling unit
Cover is referred to as the remaining slag mobile cover 8 of casting, and its structure there is no difference, is only that the spray time of spray facility controls and the movement of mobile cover
The differences such as speed.
Stainless steel slag slow cooling processing means below in conjunction with Fig. 1 and Fig. 2 describes slow cooling method in detail.
Total A, B, C, D, E5 slow cooling unit from Fig. 1 and Fig. 2 it can be seen that in figure, wherein, E is that the remaining slag of casting delays
Cold unit.
Process for smelting the slow cooling of slag, first, open the electronic slag door 6 before coaming plate 7 in advance, by the smelting of top
Slag mobile cover 5 moves to the position that slag is to be tumbled in advance, and, open blower fan and the dedusting of wet dedusting facility 11 in advance
Electrodynamic valve on pipeline 10.Then, the multiple tank cars 1 of embracing filling smelting slag respectively enter A, B, C, D smelting slag slow cooling list
In unit, carry out, in smelting slag slow cooling unit, slag ladle 4 operation of tumbling.Consider for further environmental protection, for steel of tumbling
Dust in empty slag ladle after slag is removed thoroughly, prevents embracing tank car and takes out of airtight by the dust removed the most completely in slow cooling unit
Dedusting region, causes the secondary pollution in workshop, and after operation of tumbling completes, embracing tank car can stop in smelting slag slow cooling unit
Such as 2～output again for 4min minute.Embracing after tank car 1 outputs, electronic slag door 6 is closed, and spray facility 13 starts, to smelting slag
Carry out operation of spraying water.Spray a period of time, such as, after 1 hour, opening electronic slag door 6, loader 3 is opened to smelting slag slow cooling
Carry out slag stirring operation in unit, after stirring operation completes, close electronic slag door 6, continue to open spray facility 13 and carry out
Spray operation.Dynamically spray 24h～after 36 hours, with loader 3 by the slag transport after slow cooling to after-treatment field
Reason.
The process of the remaining slag of casting is similar with smelting slag, opens the electronic slag door 6 before coaming plate 7 in advance, by the casting of top
Remaining slag mobile cover 8 moves to the position that slag is to be tumbled in advance, and, open the blower fan of wet dedusting facility 11 in advance and remove
Electrodynamic valve on dirt pipeline 10.The tank car 1 of embracing filling the remaining slag of casting enters in the remaining slag slow cooling unit E of casting, embraces tank car 1 by slag ladle
4 are placed in the remaining slag slow cooling unit of casting, embrace tank car 1 and output, and subsequently, electronic slag door 6 is closed, and spray facility 13 starts, difference
In the slow cooling mode of smelting slag, the slow cooling mode of the remaining slag of casting is slag ladle of first not tumbling, but is positioned over slow cooling list at slag ladle
After in unit, spray facility dynamically sprays operation to slag more than the casting in slag ladle.Portion nozzle can be only used to spray one section
Time, such as, after 8～12 hours, open electronic slag door 6, embrace a tank car 1 and open to the remaining slag slow cooling unit of casting, carry out embracing a tank,
Tumble slag ladle operation, then embrace tank car 1 and output, close electronic slag door 6, open whole nozzles of spray facility 13, spray
Drench operation.Spray a period of time, such as, after 1 hour, opening electronic slag door 6, loader 3 is opened to the remaining slag slow cooling unit of casting
Carry out slag stirring operation, after stirring operation, close electronic slag door 6, continue to open spray facility 13 and carry out spray work
Industry.Dynamically spray is after 16～24 hours, and the slag transport after slow cooling is processed by loader 3 to after-treatment field.Utilization is hung
Residual steel is selected by the disk that carries of car 2.
Wherein, the present embodiment is not limiting as the form of tumbling of stainless steel slag, use embrace a tank car, electronic slag pot overturning trolley or
Other forms of person.
The stainless steel slag slow cooling processing means of the present invention takes two kinds of processing modes, technique for different slag sources
The most efficiently；Mobile cover is integrated with spray and dust removal installation, it is achieved that dynamic auto spray, be not required to use original manually
Fetching water mode, post environment significantly improves.Further, it is possible to carry out dedusting operation simultaneously, which overcome conventional roof dedusting
The shortcoming that power consumption is big, dust removing effects is the best, it is achieved the high-effective dust-removing of post environment.
Additionally, the draining smelting slag and casting remaining slag annealing process generation drains in sedimentation tank, the door above sedimentation tank
Tailings is captured and carries out drainage to the sediment stockyard closed on, dry operation by formula clamshell crane 9, is transported to suitable field after a period of time
Ground carries out related resource comprehensive utilization, and the water of sedimentation tank and water processing establishment connect, through filtration etc. reason Posterior circle to spraying system
System, recycles.
Smelt the treating capacity casting residue to be far longer than of slag, so what the translational speed of metallurgical slag mobile cover can be arranged
Bigger, such as, the translational speed smelting slag mobile cover is 10～15m/min.The translational speed of the remaining slag mobile cover of casting is
10m/min。
The present invention also provides for a kind of stainless steel slag slow cooling method, uses above-described stainless steel slag slow cooling to process dress
Putting, this stainless steel slag slow cooling method easily cracks mainly by steel slag water quenching, and the characteristic of the easy efflorescence of slow cooling accelerates steel
Slag cools down.After stainless steel slag has been slagged tap, pour slag ladle into and transport to stockyard, then being filled hot steel slag by an armful tank car
Slag ladle is transferred to cooling zone.This stainless steel slag slow cooling method is divided into smelting slag (mainly electricity according to different slag sources
Slag, AOD furnace slag) slow cooling method slag slow cooling method remaining with casting.Wherein, smelting slag slow cooling method is, delays smelting slag
Slag ladle operation of tumbling is carried out in cold unit.Embrace after tank car 1 outputs, close electronic slag door 6, carry out water spray make smelting slag
Industry.Spray a period of time, such as, after 1 hour, carry out slag stirring operation, after stirring operation completes, close electronic slag door 6,
Proceed to spray operation.Dynamically spray is after 24～36 hours, is processed to after-treatment field by the slag transport after slow cooling.
In whole annealing process, carry out dedusting operation also by cleaner.
After operation completes additionally, tumble, embrace tank car and can stop such as 2～4min minute smelting in slag slow cooling unit
Output again.
The slow cooling method of the remaining slag of casting is to be placed on by slag ladle 4 in the remaining slag slow cooling unit of casting, and electronic slag door 6 is closed, district
Not in the slow cooling mode of smelting slag, the slow cooling mode of the remaining slag of casting is slag ladle of first not tumbling, but is positioned over slow cooling at slag ladle
After in unit, spray facility dynamically sprays operation to slag more than the casting in slag ladle.After spraying such as 8～12 hours, open
Electronic slag door 6, carries out slag ladle operation of tumbling, and closes electronic slag door 6, carries out spraying operation.After spraying such as 1 hour, enter
The stirring operation of row slag, after stirring operation, closes electronic slag door 6, proceeds to spray operation.Dynamically spray 16～24
After hour, the slag transport after slow cooling is processed to after-treatment field.Residual steel is selected by the disk that carries utilizing crane 2.
The method carries out effective dedusting to embracing tumble process, shower water process of a tank car too, it is achieved the high-effective dust-removing of post environment.Casting
Remaining slag contains the residual steel of bulk, it is possible to use crane carries disk and selected by residual steel.In whole annealing process, also by dedusting
Facility carries out dedusting operation.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For Yuan, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made,
Equivalent, improvement etc., should be included within the scope of the present invention.
Claims (10)
1. a stainless steel slag slow cooling processing method, will be equipped with the slag pot tipping of slag in slow cooling unit, then moves
State shower water operation, and, during slag pot tipping and dynamic shower water, keep continuing dedusting；
After persistently spraying the default time, carry out slag stirring operation；
After having stirred, proceed dynamically to spray operation, wherein,
If smelting slag, after completion of stirring, continue dynamic shower water 24～36 hours,
If the remaining slag of casting, after completion of stirring, continue dynamic shower water 16～24 hours.
Method the most according to claim 1, it is characterised in that
Slag remaining for casting, before tumbling, needs first dynamic shower water cooling 8～12 hours in slag ladle.
Method the most according to claim 1, it is characterised in that
After slag pot tipping, the Preset Time persistently sprayed is 1 hour.
Method the most according to claim 1, it is characterised in that a use armful tank car is tumbled after slag ladle, and slag ladle of tumbling, and embraces tank
Car stops 2～4 minutes in slow cooling unit.
5. a stainless steel slag slow cooling processing means, it is characterised in that including:
Multiple slow cooling unit, each slow cooling unit is the structure of the closing formed by coaming plate, slag door and mobile cover, by controlling
Slow cooling unit is closed or opened to slag door；Mobile cover, described mobile cover is arranged on the top of each slow cooling unit translatablely,
Make mobile cover at working position and wait that position switches over, each mobile cover is all integrated with spray facility, dedusting pipeline, thus
Can spraying cooling water dynamic to the slag in slow cooling unit and carry out dedusting,
Different according to pending slag, described mobile cover divides into again smelting slag mobile cover and the remaining slag mobile cover of casting, smelting
Steelmaking slag mobile cover and the remaining slag mobile cover of casting run according to respective speed parameter respectively.
Device the most according to claim 5, it is characterised in that
Smelting slag mobile cover and at working position and wait that between position, the translational speed of switching is 10～15m/min, the remaining slag of casting moves
The dynamic translational speed switched between working position and wait position that covers on is 10m/min.
Device the most according to claim 5, it is characterised in that use any one mode in motor, elevator or hydraulic pressure to drive
Mobile cover moves horizontally.
Device the most according to claim 5, it is characterised in that for smelting slag slow cooling, controls to smelt slag mobile cover
Move to working position, will be equipped with smelt slag slag pot tipping at slow cooling unit, then smelt slag mobile cover dynamically spray
Trickle operation, and, during slag pot tipping and dynamic shower water, smelt slag mobile cover and remain lasting dedusting；
Persistently spray is after 1 hour, carries out slag stirring operation；
After having stirred, continue dynamic shower water 24～36 hours, to complete slow cooling.
Device the most according to claim 5, it is characterised in that slag slow cooling remaining for casting, controls the remaining slag mobile cover of casting
Moving to working position, the slag ladle that will be equipped with casting remaining slag is placed in slow cooling unit, dynamic shower water 8～12 hours in slag ladle
After, by slag pot tipping in slow cooling unit, then the remaining slag mobile cover of casting carries out dynamic shower water operation, and, incline at slag ladle
Turning over and during dynamic shower water, the remaining slag mobile cover of casting continues dedusting all the time；
After persistently spray is 1 hour, carry out slag stirring operation；
After having stirred, continue dynamic shower water 16～24 hours, to complete slow cooling.
Device the most according to claim 5, it is characterised in that be additionally provided with dust-break bar on described slag door.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610826783.8A CN106222341B (en) | 2016-09-14 | 2016-09-14 | A kind of stainless steel slag slow cooling processing unit |
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| CN201610826783.8A CN106222341B (en) | 2016-09-14 | 2016-09-14 | A kind of stainless steel slag slow cooling processing unit |
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| CN106222338A (en) * | 2016-09-20 | 2016-12-14 | 中冶京诚工程技术有限公司 | Environment-friendly slag splashing device for hot splashing steel slag |
| CN110982965A (en) * | 2019-12-20 | 2020-04-10 | 广西柳钢环保股份有限公司 | Method for separating slag powder in primary treatment and secondary treatment processes of stainless steel slag |
| CN111154932A (en) * | 2020-01-06 | 2020-05-15 | 中冶东方工程技术有限公司 | Mobile cover vehicle and treatment method for water-containing dust in steel slag hot disintegration process |
| CN112266991A (en) * | 2020-09-25 | 2021-01-26 | 江苏沙钢集团有限公司 | Desulphurization slag in-tank water-pumping circulation treatment method capable of reducing time consumption of process |
| CN112693917A (en) * | 2020-12-21 | 2021-04-23 | 华能国际电力股份有限公司上海石洞口第一电厂 | Integrated storage and transportation device for conveying dry slag and pebble coal |
| CN112779373A (en) * | 2021-01-21 | 2021-05-11 | 上海宝钢节能环保技术有限公司 | Molten iron desulphurization sediment environmental protection processing apparatus |
| CN113136463A (en) * | 2021-04-28 | 2021-07-20 | 湖北联江环境科技有限公司 | Comprehensive treatment method for waste steel slag of converter |
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| CN112266991A (en) * | 2020-09-25 | 2021-01-26 | 江苏沙钢集团有限公司 | Desulphurization slag in-tank water-pumping circulation treatment method capable of reducing time consumption of process |
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| CN112779373A (en) * | 2021-01-21 | 2021-05-11 | 上海宝钢节能环保技术有限公司 | Molten iron desulphurization sediment environmental protection processing apparatus |
| CN113136463A (en) * | 2021-04-28 | 2021-07-20 | 湖北联江环境科技有限公司 | Comprehensive treatment method for waste steel slag of converter |
| CN113136463B (en) * | 2021-04-28 | 2022-06-14 | 武汉西赛冶金工程有限责任公司 | Comprehensive treatment method for waste steel slag of converter |
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| CN106222341B (en) | 2019-04-12 |
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