CN107541575B - A kind of blast furnace dedusting ash recyclable device and method - Google Patents
A kind of blast furnace dedusting ash recyclable device and method Download PDFInfo
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- CN107541575B CN107541575B CN201610497229.XA CN201610497229A CN107541575B CN 107541575 B CN107541575 B CN 107541575B CN 201610497229 A CN201610497229 A CN 201610497229A CN 107541575 B CN107541575 B CN 107541575B
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- molten iron
- blast furnace
- dedusting ash
- tap drain
- furnace dedusting
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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 recyclable device and methods, device has: molten iron tap drain, one end of the molten iron tap drain is for injecting molten iron, the other end offers through-hole, molten iron for being discharged in the molten iron tap drain, gap is offered in one long side wall of the molten iron tap drain, the gap is lower than the position of the gap for discharging clinker, the position of the through-hole；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 blast furnace dedusting ash recyclable device of the invention and method, the ferro element in blast furnace dedusting ash can be recycled, and other harmful element Concentration of matter are handled.
Description
Technical field
The present invention relates to a kind of blast furnace dedusting ash recyclable device and methods.
Background technique
Blast furnace dedusting ash be the crude fuel that blast furnace is discharged in ironmaking processes with blast furnace gas dust and
High-temperature region intense reaction and the particle generated, free state and reference state and compound containing the multiple elements such as iron and carbon, tool
Body is as shown in table 1, is that a kind of light weight, particle are small wherein in the majority with iron oxide, aluminium oxide, silica and calcium oxide component
And the harmful poisonous substance containing there are many, it 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 are by gravitational precipitator and bag filter dust in coal gas point
It separates out and, blast furnace dedusting ash obtained after separation contains 50-70% ferro element, and harmful member such as zinc is also contained in blast furnace dedusting ash
Element.Blast fumance iron per ton can generate the blast furnace ash of 20-30kg, day generate ash quantity 250-300t.
Due to blast furnace dedusting ash there are fine size, density is small the features such as, serious environment will be caused dirty as trash discharge
Dye, and waste a large amount of iron, carbon resource.Current processing method is to be discharged into the digestion of sinter factory with truck transport, is matched
In sinter, sinter enters blast furnace as raw material and participates in molten iron smelting.But the sinter equipped with blast furnace dedusting ash is added
After blast furnace process, harmful element in blast furnace dedusting ash can in blast furnace circulating enrichment, and then the stabilization of broken ring blast fumance and
Safety, therefore blast furnace dedusting ash has stringent limitation in the proportion of sinter, so that the recycling of blast furnace dedusting ash is by very big
Limitation.
Summary of the invention
To solve the above problems, the present invention provides a kind of blast furnace dedusting ash recyclable device and method, blast furnace can be recycled and removed
Ferro element in dust, 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 recyclable device, have:
Molten iron tap drain, for injecting molten iron, the other end offers through-hole for one end of the molten iron tap drain, described for being discharged
Molten iron in molten iron tap drain offers gap in one long side wall of the molten iron tap drain, and the gap is for discharging clinker, institute
The position for stating through-hole is lower 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 towards the molten iron tap drain
Ash.
Preferably, it is additionally provided with slag trap at the nozzle of the spray gun, the opening of the slag trap is towards the molten iron master
The through-hole of ditch.
Preferably, the slag trap rectangular configuration unclosed in one side, the nozzle is arranged among the rectangle, described
The unclosed through-hole facing towards the molten iron tap drain
The present invention also provides a kind of blast furnace dedusting ash recovery methods, based on above-mentioned blast furnace dedusting ash recyclable device, including with
Lower step:
Step 1 collects and transports blast furnace dedusting ash to blast furnace dedusting ash collection device；
Step 2 injects molten iron in Xiang Suoshu molten iron tap drain；
Blast furnace dedusting ash in the blast furnace dedusting ash collection device is passed through the spray gun towards the molten iron master by step 3
Ditch injection；
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 logical
The through-hole discharge recycling is crossed, clinker is discharged from the gap；
The molten iron recycled in step 4 is used to make steel by step 5, by slag emission to slag disposal 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.
Blast furnace dedusting ash recyclable device of the invention and method, can be by benefit materials in blast furnace dedusting ash (ferro element) weight
It is new to utilize, industrial waste is turned waste into wealth, and harmful element is focused on, plays the effect of environmental protection, in addition, slag trap
It is arranged, in the region between slag trap and molten iron tap drain, reacts blast furnace dedusting ash rapidly with high temperature liquid iron, ensure that pushing off the slag
Efficiency can effectively buffer violent slag iron and seethe and scouring effect 90% or more.Ash quantity 300t is generated by blast furnace day, is blown
Capacity of equipment 3t/min needs 100min that can spray.There is enough digestion in blast furnace daily tapping total time in 1500min
Ability.Beneficial effects of the present invention not only avoid harmful element and enter furnace, in blast furnace circulating enrichment, influence the steady of blast fumance
Fixed and safety, it is often more important that there is bigger meaning in terms of the recycling of steel plant's waste, harmless treatment.
Detailed description of the invention
Fig. 1 is blast furnace dedusting ash recyclable device structure chart of the invention；
Fig. 2 is the flow chart of blast furnace dedusting ash recovery method of the invention.
Specific embodiment
In the following, being further described in conjunction with attached drawing to structure and working principle etc. of the invention.
As shown in Figure 1, blast furnace dedusting ash recyclable device of the invention has: molten iron tap drain 1, the molten iron tap drain 1 are for iron
The groove of water flowing, for one end for injecting molten iron, the lower half of the other end offers through-hole 11, and the through-hole 11 is for being discharged iron
Molten iron, is usually expelled in fish torpedo ladle by the molten iron in water tap drain 1, in addition, offering in a long side wall of molten iron tap drain 1
Gap 12, gap 12 is for being discharged and clearing up clinker use
Blast furnace dedusting ash recyclable device of the invention is also equipped with spray gun 2, in general, the collection of spray gun 2 and blast furnace dedusting ash
Device (not shown) is connected, for spraying blast furnace dedusting ash towards molten iron tap drain 1 using compressed air etc..The lower end of spray gun 2 is
Nozzle 21, nozzle 21 is vertically sprayed towards molten iron tap drain 1, in addition, being additionally provided with baffle 22 on spray gun 2, baffle 22 surrounds nozzle
21 settings, the opening of baffle 22 therefore form one towards the through-hole 11 of molten iron tap drain 1 between baffle 22 and molten iron tap drain 1
Conversion zone, on the area, blast furnace dedusting ash are reacted with high temperature liquid iron, and the ferro element in blast furnace dedusting ash is dissolved in height
In warm molten iron, final molten iron is expelled to connected molten iron collection device (not shown) from through-hole 11, in present embodiment
For torpedo tank car, other elements then form clinker, and clinker is finally discharged from gap 12 and focuses on, and the molten iron after reaction is for refining
Steel.
As shown in Fig. 2, be based on above-mentioned apparatus, the present invention also provides a kind of blast furnace dedusting ash recovery method, specifically include with
Lower step:
Step 1 S1, collect and transport blast furnace dedusting ash to be set to before the State of Blast Furnace before blast furnace dedusting ash recyclable device by
Batch can (not shown)；
Step 2 S2, by through-hole 11 towards molten iron is injected in molten iron tap drain 1, the temperature of molten iron is 1500 DEG C at this time；
Step 3 S3 will be passed through spray gun 2 towards molten iron master by the blast furnace dedusting ash in batch can before State of Blast Furnace using compressed air
The jet velocity of ditch injection, spray gun is 3t/min, since in this step, blast furnace dedusting ash is sprayed onto molten iron, can be caused acutely
Reaction, cause 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, into
And influence the service life of tap drain；If also will cause band iron in slag, therefore this implementation along with molten iron and clinker separation are bad
Striker plate 22 is preferably provided in mode, pushing off the slag efficiency can achieve 90% or more, can effectively buffer violent slag iron and turn over
It rises and scouring effect；
Step 4 S4, in molten iron tap drain 1, blast furnace dedusting ash is partially dissolved in molten iron, and the molten iron after injection is emitted into
Torpedo tank car, clinker are discharged from gap 12；
The molten iron recycled in step 4 is used to make steel by step 5 S5, by slag emission to slag disposal system.
Blast furnace dedusting ash recyclable device of the invention and method, can be by benefit materials in blast furnace dedusting ash (ferro element) weight
It is new to utilize, industrial waste is turned waste into wealth, and harmful element is focused on, plays the effect of environmental protection, in addition, slag trap
It is arranged, in the region between slag trap and molten iron tap drain, reacts blast furnace dedusting ash rapidly with high temperature liquid iron, ensure that pushing off the slag
Efficiency can effectively buffer violent slag iron and seethe and scouring effect 90% or more.Ash quantity 300t is generated by blast furnace day, is blown
Capacity of equipment 3t/min needs 100min that can spray.There is enough digestion in blast furnace daily tapping total time in 1500min
Ability.Beneficial effects of the present invention not only avoid harmful element and enter furnace, in blast furnace circulating enrichment, influence the steady of blast fumance
Fixed and safety, it is often more important that there is bigger meaning in terms of the recycling of steel plant's waste, harmless treatment.
More than, schematic description only of the invention, it will be recognized by those skilled in the art that without departing from work of the invention
On the basis of making principle, a variety of improvement can be made to the present invention, this is all belonged to the scope of protection of the present invention.
Claims (5)
1. a kind of blast furnace dedusting ash recyclable device, which is characterized in that have:
Molten iron tap drain, one end of the molten iron tap drain is for injecting molten iron, and the other end offers through-hole, for the molten iron to be discharged
Molten iron in tap drain, gap is offered in a long side wall of the molten iron tap drain, and the gap is described logical for discharging clinker
The position in hole is lower 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；
It is 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.
2. blast furnace dedusting ash recyclable device as described in claim 1, which is characterized in that the slag trap is unclosed in one side
Rectangular configuration, the nozzle are arranged among the rectangle, the unclosed through-hole facing towards the molten iron tap drain.
3. a kind of blast furnace dedusting ash recovery method, which is characterized in that based on blast furnace dedusting ash as described in claim 1 recycling dress
It sets, comprising the following steps:
Step 1 collects and transports blast furnace dedusting ash to blast furnace dedusting ash collection device；
Step 2 injects molten iron in Xiang Suoshu molten iron tap drain；
Step 3 sprays the blast furnace dedusting ash in the blast furnace dedusting ash collection device by the spray gun towards the molten iron tap drain
It penetrates；
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 passes through institute
Through-hole discharge recycling is stated, clinker is discharged from the gap；
The molten iron recycled in step 4 is used to make steel by step 5, by slag emission to slag disposal system.
4. blast furnace dedusting ash recovery method as claimed in claim 3, which is characterized in that in step 2, the temperature of the molten iron
It is 1500 DEG C.
5. blast furnace dedusting ash recovery method as claimed in claim 4, which is characterized in that in step 3, the injection of the spray gun
Speed is 3t/min.
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| 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 CN107541575A (en) | 2018-01-05 |
| CN107541575B true CN107541575B (en) | 2019-08-27 |
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| 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 |
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 |
-
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- 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 |
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