CN107541575A - A kind of blast furnace dedusting ash retracting device and method - Google Patents
A kind of blast furnace dedusting ash retracting device and method Download PDFInfo
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- CN107541575A CN107541575A CN201610497229.XA CN201610497229A CN107541575A CN 107541575 A CN107541575 A CN 107541575A CN 201610497229 A CN201610497229 A CN 201610497229A CN 107541575 A CN107541575 A CN 107541575A
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- Prior art keywords
- molten iron
- blast furnace
- dedusting ash
- furnace dedusting
- tap drain
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses a kind of blast furnace dedusting ash retracting device and method, device to possess：Molten iron tap drain, one end of the molten iron tap drain are used to inject molten iron, and the other end offers through hole, for discharging the molten iron in the molten iron tap drain, gap is offered in one long side wall of the molten iron tap drain, the gap is used to discharge clinker, and the position of the through hole is less than the position of the gap；It is also equipped with；Be also equipped with, spray gun, the spray gun perpendicular to the molten iron tap drain, for spraying the blast furnace dedusting ash towards the molten iron tap drain.Using the blast furnace dedusting ash retracting device and method of the present invention, the ferro element in blast furnace dedusting ash can be reclaimed, and other harmful element Concentration of matter are handled.
Description
Technical field
The present invention relates to a kind of blast furnace dedusting ash retracting device and method.
Background technology
Blast furnace dedusting ash is the former combustion that blast furnace is discharged in ironmaking processes with blast furnace gas
The dust and high-temperature region intense reaction of material and caused particulate, contain the multiple element such as iron and carbon
Free state and reference state and compound, it is specific as shown in table 1, wherein with iron oxide, oxygen
It is in the majority to change aluminium, silica and calcium oxide component, is a kind of light weight, particle is small and contains more
The harmful poisonous material of kind, is one of iron and steel enterprise's primary solids emission.
The main component % of blast furnace dedusting ash
Table 1
In blast fumance, a large amount of blast furnace gas dust pass through gravitational precipitator and sack cleaner
Dust separation in coal gas is come out, the blast furnace dedusting ash obtained after separation contains 50-70% iron member
Element, also containing harmful elements such as zinc in blast furnace dedusting ash.Blast fumance iron per ton, can produce 20
- 30kg blast furnace ash, day produce ash quantity 250-300t.
Because blast furnace dedusting ash has the features such as fine size, density is small, will be made as trash discharge
Into serious environmental pollution, and waste substantial amounts of iron, carbon resource.Current processing method
It is to be discharged into sintering deposit factory with truck transport to digest, fits in sintering deposit, sintering deposit is as raw material
Molten iron smelting is participated in into blast furnace.But the sintering deposit equipped with blast furnace dedusting ash adds blast furnace smelting
After refining, the harmful element in blast furnace dedusting ash can be in blast furnace circulating enrichment, and then breaks ring blast furnace
The stabilization and safety of production, therefore blast furnace dedusting ash has strict limitation in the proportioning of sintering deposit, with
The recycling of blast furnace dedusting ash is caused to be extremely restricted.
The content of the invention
To solve the above problems, the present invention provides a kind of blast furnace dedusting ash retracting device and method,
The ferro element in blast furnace dedusting ash can be reclaimed, and other harmful element Concentration of matter are handled.
To achieve the above object, the present invention provides a kind of blast furnace dedusting ash retracting device, possess：
Molten iron tap drain, one end of the molten iron tap drain are used to inject molten iron, and the other end offers logical
Hole, for discharging the molten iron in the molten iron tap drain, in a long side wall of the molten iron tap drain
Gap is offered, the gap is used to discharge clinker, and the position of the through hole is less than the gap
Position；It is also equipped with,
Spray gun, the spray gun perpendicular to the molten iron tap drain, for being sprayed towards the molten iron tap drain
Penetrate the blast furnace dedusting ash.
Preferably, slag trap, the opening of the slag trap are additionally provided with the nozzle of the spray gun
Towards the through hole of the molten iron tap drain.
Preferably, the slag trap is arranged in the unclosed rectangular configuration of one side, the nozzle
Among the rectangle, the unclosed through hole facing to the molten iron tap drain
The present invention also provides a kind of blast furnace dedusting ash recovery method, is returned based on above-mentioned blast furnace dedusting ash
Receiving apparatus, comprise the following steps：
Step 1, collect and transport blast furnace dedusting ash to blast furnace dedusting ash collection device；
Step 2, inject molten iron into the molten iron tap drain；
Step 3, the blast furnace dedusting ash in the blast furnace dedusting ash collection device is passed through into the spray
Rifle sprays towards the molten iron tap drain；
Step 4, in the molten iron tap drain, the blast furnace dedusting ash is partially dissolved in molten iron,
Molten iron after injection is discharged by the through hole to be reclaimed, and clinker is discharged from the gap；
Step 5, the molten iron reclaimed in step 4 is used to make steel, by slag emission at slag
Reason system.
Preferably, in step 2, the temperature of the molten iron is 1500 DEG C.
Preferably, in step 3, the jet velocity of the spray gun is 3t/min.
The blast furnace dedusting ash retracting device and method of the present invention, can will be beneficial in blast furnace dedusting ash
Material (ferro element) re-uses, and industrial waste is turned waste into wealth, and harmful element is concentrated
Processing, the effect of environmental protection is served, in addition, the setting of slag trap, in slag trap and molten iron master
In region between ditch, blast furnace dedusting ash is reacted rapidly with high temperature liquid iron, ensure that pushing off the slag is imitated
Rate can effectively buffer violent slag iron and seethe and scouring effect more than 90%.By blast furnace day
Ash quantity 300t is produced, blowing device ability 3t/min is, it is necessary to which 100min can spray.Blast furnace is daily
Total time tap a blast furnace in 1500min, therefore there are enough digestion powers.Beneficial effects of the present invention are not
Only avoid harmful element and enter stove, in blast furnace circulating enrichment, influence blast fumance stabilization and
Safety, it is often more important that have more in terms of the recycling, harmless treatment in steel plant's discarded object
Big meaning.
Brief description of the drawings
Fig. 1 is the blast furnace dedusting ash retracting device structure chart of the present invention；
Fig. 2 is the flow chart of the blast furnace dedusting ash recovery method of the present invention.
Embodiment
Below, with reference to the work such as accompanying drawing, structure and operation principle to the present invention further
It is bright.
As shown in figure 1, the blast furnace dedusting ash retracting device of the present invention possesses：Molten iron tap drain 1, should
Molten iron tap drain 1 is the groove for molten iron flow, and its one end is used to inject molten iron, under the other end
Half portion offers through hole 11, and the through hole 11 is used to discharge the molten iron in molten iron tap drain 1, generally will
Molten iron is expelled in fish torpedo ladle, in addition, being offered in a long side wall of molten iron tap drain 1 open-minded
Mouth 12, gap 12 are used to discharging and clearing up clinker use
The blast furnace dedusting ash retracting device of the present invention is also equipped with spray gun 2, in general, spray gun 2 and height
The collection device (not shown) of stove dedusting ash is connected, for utilizing compressed air etc. towards molten iron
Tap drain 1 sprays blast furnace dedusting ash.The lower end of spray gun 2 is nozzle 21, and nozzle 21 is towards molten iron tap drain
1 vertical injection, in addition, being additionally provided with baffle plate 22 on spray gun 2, baffle plate 22 surrounds nozzle 21
Set, the opening of baffle plate 22 towards molten iron tap drain 1 through hole 11, therefore in baffle plate 22 and molten iron
A conversion zone, on the area, blast furnace dedusting ash and high temperature iron are formd between tap drain 1
Water is reacted, and the ferro element in blast furnace dedusting ash is dissolved in high temperature liquid iron, final molten iron from
Through hole 11 is expelled to connected molten iron collection device (not shown), in present embodiment
For torpedo tank car, other elements then form clinker, and clinker finally focuses on from the discharge of gap 12,
Reacted molten iron is used to make steel.
As shown in Fig. 2 being based on said apparatus, the present invention also provides a kind of blast furnace dedusting ash recovery
Method, specifically include following steps：
Step 1 S1, collect and transport blast furnace dedusting ash to being arranged at blast furnace dedusting ash retracting device
By batch can (not shown) before preceding State of Blast Furnace；
Step 2 S2, by through hole 11 towards molten iron is injected in molten iron tap drain 1, the now temperature of molten iron
Spend for 1500 DEG C；
Step 3 S3, using compressed air, the blast furnace dedusting ash before State of Blast Furnace in by batch can is led to
Spray gun 2 to be crossed to spray towards molten iron tap drain, the jet velocity of spray gun is 3t/min, due in this step,
Blast furnace dedusting ash is sprayed onto in molten iron, can cause violent reaction, causes seething for molten iron in tap drain,
The molten iron and clinker seethed can wash away tap drain side wall, cause the erosion of tap drain, and then influence tap drain
Service life；Along with if molten iron and clinker separation are bad, band iron in slag can be also caused,
Therefore be preferably provided with striker plate 22 in present embodiment, pushing off the slag efficiency can reach 90% with
On, it can effectively buffer violent slag iron and seethe and scouring effect；
Step 4 S4, in molten iron tap drain 1, blast furnace dedusting ash is partially dissolved in molten iron, spray
Molten iron after penetrating is emitted into torpedo tank car, and clinker is discharged from gap 12；
Step 5 S5, the molten iron reclaimed in step 4 is used to make steel, by slag emission to slag
Processing system.
The blast furnace dedusting ash retracting device and method of the present invention, can will be beneficial in blast furnace dedusting ash
Material (ferro element) re-uses, and industrial waste is turned waste into wealth, and harmful element is concentrated
Processing, the effect of environmental protection is served, in addition, the setting of slag trap, in slag trap and molten iron master
In region between ditch, blast furnace dedusting ash is reacted rapidly with high temperature liquid iron, ensure that pushing off the slag is imitated
Rate can effectively buffer violent slag iron and seethe and scouring effect more than 90%.By blast furnace day
Ash quantity 300t is produced, blowing device ability 3t/min is, it is necessary to which 100min can spray.Blast furnace is daily
Total time tap a blast furnace in 1500min, therefore there are enough digestion powers.Beneficial effects of the present invention are not
Only avoid harmful element and enter stove, in blast furnace circulating enrichment, influence blast fumance stabilization and
Safety, it is often more important that have more in terms of the recycling, harmless treatment in steel plant's discarded object
Big meaning.
More than, it is only schematic description of the invention, it will be recognized by those skilled in the art that
On the basis of the operation principle of the present invention, a variety of improvement can be made to the present invention, this
Belong to protection scope of the present invention.
Claims (6)
1. a kind of blast furnace dedusting ash retracting device, it is characterised in that possess：
Molten iron tap drain, one end of the molten iron tap drain are used to inject molten iron, and the other end offers through hole, for discharging the molten iron in the molten iron tap drain, gap is offered in one long side wall of the molten iron tap drain, the gap is used to discharge clinker, and the position of the through hole is less than the position of the gap；It is also equipped with,
Spray gun, the spray gun perpendicular to the molten iron tap drain, for spraying the blast furnace dedusting ash towards the molten iron tap drain.
2. blast furnace dedusting ash retracting device as claimed in claim 1, it is characterised in that be additionally provided with slag trap at the nozzle of the spray gun, the through hole of the opening of the slag trap towards the molten iron tap drain.
3. blast furnace dedusting ash retracting device as claimed in claim 2, it is characterised in that the slag trap is arranged among the rectangle in the unclosed rectangular configuration of one side, the nozzle, the unclosed through hole facing to the molten iron tap drain.
4. a kind of blast furnace dedusting ash recovery method, it is characterised in that based on blast furnace dedusting ash retracting device as claimed in claim 1, comprise the following steps：
Step 1, collect and transport blast furnace dedusting ash to blast furnace dedusting ash collection device；
Step 2, inject molten iron into the molten iron tap drain；
Step 3, the blast furnace dedusting ash in the blast furnace dedusting ash collection device is sprayed by the spray gun towards the molten iron tap drain；
Step 4, in the molten iron tap drain, the blast furnace dedusting ash is partially dissolved in molten iron, and the molten iron after injection is discharged by the through hole and reclaimed, and clinker is discharged from the gap；
Step 5, the molten iron reclaimed in step 4 is used to make steel, by slag emission to slag disposal system.
5. blast furnace dedusting ash recovery method as claimed in claim 4, it is characterised in that in step 2, the temperature of the molten iron is 1500 DEG C.
6. blast furnace dedusting ash recovery method as claimed in claim 5, it is characterised in that in step 3, the jet velocity of the spray gun is 3t/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610497229.XA CN107541575B (en) | 2016-06-29 | 2016-06-29 | A kind of blast furnace dedusting ash recyclable device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610497229.XA CN107541575B (en) | 2016-06-29 | 2016-06-29 | A kind of blast furnace dedusting ash recyclable device and method |
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| CN107541575A true CN107541575A (en) | 2018-01-05 |
| CN107541575B CN107541575B (en) | 2019-08-27 |
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| CN201610497229.XA Active CN107541575B (en) | 2016-06-29 | 2016-06-29 | A kind of blast furnace dedusting ash recyclable device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115044717A (en) * | 2022-05-24 | 2022-09-13 | 中冶华天工程技术有限公司 | Blast furnace system fly ash resource utilization method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200952023Y (en) * | 2006-03-24 | 2007-09-26 | 上海梅山钢铁股份有限公司 | Blast furnace gravity dust removing processing device |
| CN201220946Y (en) * | 2008-06-06 | 2009-04-15 | 攀钢集团攀枝花钢铁研究院有限公司 | Device for recovering metallic iron from vanadium-titanium blast furnace slag |
| CN101818263A (en) * | 2009-02-27 | 2010-09-01 | 鞍钢股份有限公司 | Method for reclaiming zinc-iron-containing dust and sludge |
| CN105177195A (en) * | 2015-10-08 | 2015-12-23 | 宝钢发展有限公司 | Process for directly smelting molten iron through powdery iron-containing dust slime |
-
2016
- 2016-06-29 CN CN201610497229.XA patent/CN107541575B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200952023Y (en) * | 2006-03-24 | 2007-09-26 | 上海梅山钢铁股份有限公司 | Blast furnace gravity dust removing processing device |
| CN201220946Y (en) * | 2008-06-06 | 2009-04-15 | 攀钢集团攀枝花钢铁研究院有限公司 | Device for recovering metallic iron from vanadium-titanium blast furnace slag |
| CN101818263A (en) * | 2009-02-27 | 2010-09-01 | 鞍钢股份有限公司 | Method for reclaiming zinc-iron-containing dust and sludge |
| CN105177195A (en) * | 2015-10-08 | 2015-12-23 | 宝钢发展有限公司 | Process for directly smelting molten iron through powdery iron-containing dust slime |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115044717A (en) * | 2022-05-24 | 2022-09-13 | 中冶华天工程技术有限公司 | Blast furnace system fly ash resource utilization method and device |
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