CN110238172A - The method for dissolving the processing resource of solid waste containing zinc using blast furnace - Google Patents
The method for dissolving the processing resource of solid waste containing zinc using blast furnace Download PDFInfo
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- CN110238172A CN110238172A CN201910532184.9A CN201910532184A CN110238172A CN 110238172 A CN110238172 A CN 110238172A CN 201910532184 A CN201910532184 A CN 201910532184A CN 110238172 A CN110238172 A CN 110238172A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
Abstract
The invention discloses a kind of methods for dissolving the processing resource of solid waste containing zinc using blast furnace, belong to metallurgical technology field.It includes that will contain the zinc-containing raw materials mixed collection of Zn content >=6% in zinc solid waste and be sent into the recycling of downstream Zhi Xin enterprise, it is sent to sintering plant after the zinc-containing raw materials mixed collection of Zn content < 6% as sintering deposit raw material, and it includes the circulation between zinc-containing substance enrichment phase and zinc-containing substance expulsive stage that blast furnace operating mode, which is arranged,；This method is classified and is enriched with by the solid waste containing zinc for generating steel whole process, realizes the resource utilization of zinc-containing substance in solid waste, and the equipment investment that this method is related to is few, technology strong operability, and overall operation is stablized.
Description
Technical field
The present invention relates to the recyclings of the solid waste generated in the production of steel whole process, belong to metallurgical technology neck
Domain, more particularly to a kind of method for dissolving the processing resource of solid waste containing zinc using blast furnace.
Background technique
Domestic and international iron and steel enterprise mostly uses rotary hearth furnace or rotary kiln to handle solid waste containing zinc, the high zinc material that removing is come out
Downstream producer is given as raw material to use.But that there are equipment investments is big for rotary hearth furnace, operating cost is high, and operating rate is unstable to ask
Topic；Although lower using rotary kiln cost of investment, there are problems that polluting big, dezincification low efficiency.
It is dissolved by blast furnace, but after zinc-containing raw materials enter blast furnace, there are enrichment cycles in furnace, such as irregularly discharge, then
It will cause blast-furnace shaft bonding, gas fluid distrbution disorder, air quantity is on the low side, collapses material hanging, cooling equipment damage, and refractory material is invaded
The problems such as erosion is damaged, and then blast furnace economy and technical indicator is caused to glide.Conventional method will contain after zinc solid waste ore matching enters furnace, main
It takes limitation blast furnace feeding raw material Zn load and edge is inhibited to get through the operating duty at center, can delay to a certain extent
Influence to smooth operation of furnace after Zn load increases is solved, but after zinc-containing substance is by central gas stream discharge blast furnace, still exists in height
In furnace gas mud, gas ash and dedusting ash, since the zinc for during blast furnace operating, not taking method to improve discharge dirt mud contains
Amount, therefore above-mentioned dirt mud Zn content is lower, and Zn content fluctuation is larger, fails specially to collect it, for downstream zinc
Enterprise uses.After these enter blast furnace again by Iron Ore Matching in Sintering containing zinc fume, zinc-containing substance can be again led in blast furnace
Enrichment cycles.Due to being not provided with the output channel of Zinc-Bearing Wastes always, blast furnace Zn load is caused persistently to increase, finally because super
It crosses blast furnace to receive the upper limit and stop being added blast furnace, causes the processing to the solid waste containing zinc more and more difficult.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of sides for dissolving the processing resource of solid waste containing zinc using blast furnace
Method, this method are discharged by the categorised collection processing of solid waste containing zinc for generating steel whole process and blast furnace consumption enrichment, by zinc
The solid waste that content is up to 6% or more sells to Zhi Xin enterprise, realizes the resource utilization of zinc-containing substance in solid waste, and
The equipment investment that this method is related to is few, technology strong operability, and overall operation is stablized.
To achieve the above object, the invention discloses a kind of methods for dissolving the processing resource of solid waste containing zinc using blast furnace.It
It is recycled including will contain the zinc-containing raw materials mixed collection of Zn content >=6% in zinc solid waste and be sent into downstream Zhi Xin enterprise, zinc contains
It send to sintering plant after measuring the zinc-containing raw materials mixed collection of < 6% as sintering deposit raw material, and it includes containing that blast furnace operating mode, which is arranged,
Zinc material is enriched with the circulation between phase and zinc-containing substance expulsive stage；
The zinc-containing substance enrichment phase includes real-time monitoring and counts zinc-containing substance total amount in blast furnace, when zinc-containing substance is total
Amount >=20t, and in blast furnace discharge gas mud when Zn content >=5%, blast furnace operating mode is converted to zinc-containing substance expulsive stage, institute
Stating zinc-containing substance expulsive stage includes Zn content in real-time monitoring blast furnace discharge gas mud, when the Zn content >=6%, to described
Gas mud mixed collection is simultaneously sent into the recycling of downstream Zhi Xin enterprise, when 3%≤the Zn content < 6%, and by the gas mud
It is sent after mixed collection to sintering plant as sintering deposit raw material, the Zn content < 3% described in 0 <, blast furnace operating mode, which is converted to, to be contained
Zinc material is enriched with the phase.
Zinc-containing raw materials mixed collection for above-mentioned setting Zn content >=6% is simultaneously sent into the recycling of downstream Zhi Xin enterprise,
To be required due to Zhi Xin enterprise to raw material Zn content, as Zn content < 6%, will increase the Raw material processing of Zhi Xin enterprise at
This, reduces the utility value of zinc-containing raw materials.In addition, measuring Zn content in respectively solid waste containing zinc in steel-making whole process, discovery is rolled
Steel neutrality sludge Zn content highest, generally 7% or so；Followed by blast furnace gas mud, Zn content are 3%~12%, then
It is steel-smelting sewage sludge and final dusting ash, Zn content is generally 2%~3%, and Zn content is usually less than in remaining solid waste containing zinc
1%.
Zinc-content determination mode of the present invention is using conventional mass spectrometer, spectral instrument or other analysis modes.
Further, the zinc-containing substance is enriched with the phase, and the calculation formula of zinc-containing substance total amount is as follows in blast furnace:
T=TD1+TD2+TD3+……TDn；
Wherein, T is zinc-containing substance total amount in blast furnace, unit t；
TD1For zinc-containing substance quality in first day blast furnace of statistics；Unit is t；
TD2For zinc-containing substance quality in second day blast furnace of statistics；Unit is t；
TDnFor zinc-containing substance quality in n-th day blast furnace of statistics, the n is the natural number being not zero；Unit is t；
The TDnMeet following relationship:
TDn=(sinter furnace entering volume × sinter Zn content+pellet furnace entering volume × pellet Zn content+lump ore enters furnace
Amount × lump ore Zn content+coke furnace entering volume × coke Zn content+coal dust furnace entering volume × coal dust Zn content)-(discharge gas mud amount
× gas mud Zn content+discharge gas ash quantity × gas ash Zn content+discharge dedusting ash quantity × dedusting ash Zn content).I.e. daily
Need to be for statistical analysis according to zinc-containing substance source and discharge, and be greater than 20 tons and gas mud with Zn content in index-furnace and contain
Zinc amount >=5% compares.
Further, it in the sintering deposit raw material supplying blast furnace, controls into furnace Zn load < 1kg/tFe.The numerical value is
By solid waste Zn content, blast furnace raw material structure and enter what the comprehensive determination of furnace Zn load obtained, wherein as Zn load < 1kg/tFe
When, using enrichment phase operation mode described below, smooth operation of furnace will not be affected greatly, but work as Zn load > 1kg/
When tFe, operation mode described below is difficult to adapt to, and will cause furnace wall bonding when serious and knot is thick, blast furnace hanging produces skill
Art index deteriorates.
Further, the zinc-containing substance enrichment phase further includes setting operation of blast furnace parameter, specific as follows:
1) setting burden distribution matrix isOrIn any one；It should
Burden distribution matrix can effectively inhibit edge airflow based on open center air-flow, moreover it is possible to prevent furnace wall knot thick；
2) control cloth angular difference is 10 °~11 °；Wide-angle cloth is used in the enrichment phase, is conducive to drive coal gas
Flow to center position development；
3) incoming air area is kept to account for the 0.32%~0.35% of air port sectional area, while controlled wind speed is 225~250m/
s；The air port that n air port radius is r generally is set along cupola well arrival end circumferencial direction, then incoming air area=π r2×n；Air port is cut
Area is cupola well sectional area, specially π R2, R is cupola well radius；
4) oxygen enrichment percentage 3%~5% is controlled, 1200 DEG C~1250 DEG C of wind-warm syndrome, coal is than 160~175kg/tFe；
5) control coal gas tedge temperature is 100 DEG C~150 DEG C；
6) gas utilization rate control monitors water temperature difference 47%~50%, keeps water temperature difference at 3~6 DEG C.
Further, control angular difference is 10.5 ° in step 2).
Further, incoming air area is kept to account for the 0.34% of cupola well sectional area in step 3).
Further, control oxygen enrichment percentage is 4% in step 4).
Preferably, setting burden distribution matrix is in step 1)
Preferably, controlled wind speed is 230 ± 5m/s in step 3)；
Preferably, gas utilization rate control monitors water temperature difference 48% in step 6), keeps water temperature difference 4 ± 0.5
℃。
Further, the zinc-containing substance expulsive stage also includes setting operation of blast furnace parameter, specific as follows:
7) adjustment burden distribution matrix isOrIn any one；Further drive coal gas
Flow to center position development；
8) control cloth angular difference is 9 °~10 °；Compared to the enrichment phase, cloth angle is smaller；
9) 5~15% incoming air area is reduced on the basis of step 3), while controlled wind speed is 235~285m/s；Enhancing
Wind speed promotes zinc-containing substance discharge；
10) oxygen enrichment percentage 2%~4% is controlled, 1200 DEG C~1250 DEG C of wind-warm syndrome, coal is than 150~165kg/tFe；
11) control coal gas tedge temperature is 150 DEG C~300 DEG C；Zinc-containing substance in Gas Flow is promoted to rise by coal gas
Pipe discharge；
12) when blast furnace gas rate < 48%, blast furnace gas rate compared to 48% is every to reduce by 1%, reduces and smelts load
5%.If blast furnace gas rate >=48% does not change blast furnace process load；
Further, in the starting or end of each smelting cycle of blast furnace, take the burnt cloth of weight mine weight primary.With reality
Now increase burnt window thickness, the center of gas flow containing zinc is driven to be developed.
Further, control cloth angular difference is 9 °, and 10% incoming air area is reduced on the basis of step 3), and control is rich
Oxygen rate 3%.
The beneficial effects are mainly reflected as follows following aspects:
The present invention devise blast furnace process whole process generation the solid waste containing zinc categorised collection method, for Zn content >=
6% zinc-containing raw materials mixed collection is simultaneously sent into the recycling of downstream Zhi Xin enterprise, and the zinc-containing raw materials of Zn content < 6%, which mix, to be received
It is sent after collection to sintering plant as sintering deposit raw material, and takes reasonable cloth and air inlet system, realize the blast furnace of the solid waste containing zinc
Consumption.Meanwhile by calculating blast furnace Zn-Mn system data, when Zn content is greater than 20 tons and gas mud zinc content >=5% in furnace,
Blast furnace operating system is adjusted, the zinc-containing substance being enriched in furnace is concentrated by gas fluid in blast furnace and is discharged, and to the high zinc watt of discharge
This mud is for statistical analysis, when Zn content >=6%, by blast furnace gas mud mixed collection and is sent into the recycling of downstream Zhi Xin enterprise
It utilizes, as 3%≤Zn content < 6%, will be sent after blast furnace gas mud mixed collection to sintering plant as sintering deposit raw material, as 0 <
Zn content < 3%, blast furnace operating mode are converted to the zinc-containing substance enrichment phase, are recycled with this, can not only dissolve steel whole process
The solid waste of generation, and the resource utilization of zinc-containing substance in solid waste is also achieved, economic and social profit is significant,
Have a vast market application prospect.
Specific embodiment
The invention discloses a kind of methods for dissolving the processing resource of solid waste containing zinc using blast furnace, and detailed process is as follows:
Categorised collection is carried out to steel whole process solid waste containing zinc first and measures Zn content, finds steel rolling neutrality sludge zinc
Content highest, generally 7% or so；Followed by blast furnace gas mud, Zn content be 3%~12%, be then exactly steel-smelting sewage sludge and
Final dusting ash, Zn content are generally 2%~3%, and Zn content is usually less than 1% in remaining solid waste containing zinc.By steel rolling neutrality
Sludge or/and blast furnace gas mud mixed collection are simultaneously sent into the recycling of downstream Zhi Xin enterprise, by steel-smelting sewage sludge, final dusting ash
Or/and it is sent after blast furnace gas mud mixed collection to sintering plant as sintering deposit raw material, with the other raw materials of blast furnace such as pellet, block
Mine, coke etc. complete blast furnace process together；Enter the amount of allocating of blast furnace for solid waste containing zinc, specifically by solid waste Zn content, height
Furnace raw material mix passes through Comprehensive Assessment with the comprehensive determination of furnace Zn load, the present invention is entered, finally determining to control into furnace Zn load <
1kg/t·Fe.It then include following between zinc-containing substance enrichment phase and zinc-containing substance expulsive stage by blast furnace operating mode setting
Ring；The zinc-containing substance enrichment phase mainly realizes the enrichment of Zn content, when being enriched to blast furnace and being able to maintain the upper limit value of normal operation,
Discharge mode is opened, later circulation collection mode and discharge mode again, until completing final recycling.
Wherein, specific as follows for the operation of blast furnace parameter setting of zinc-containing substance enrichment phase:
1) setting burden distribution matrix isOrIn any one；
2) control cloth angular difference is 10 °~11 °；
3) incoming air area is kept to account for the 0.32%~0.35% of air port sectional area, while controlled wind speed is 225~250m/
s；
4) oxygen enrichment percentage 3%~5% is controlled, 1200 DEG C~1250 DEG C of wind-warm syndrome, coal is than 160~175kg/tFe；
5) control coal gas tedge temperature is 100 DEG C~150 DEG C；
6) gas utilization rate control monitors water temperature difference 47%~50%, keeps water temperature difference at 3~6 DEG C.
Real-time monitoring simultaneously counts zinc-containing substance total amount in blast furnace, and as zinc-containing substance total amount >=20t, and gas is discharged in blast furnace
When Zn content in mud >=5%, blast furnace operating mode is converted to zinc-containing substance expulsive stage, for zinc-containing substance total amount in blast furnace
Calculation formula is as follows:
T=TD1+TD2+TD3+……TDn；
Wherein, T is zinc-containing substance total amount in blast furnace, unit t；
TD1For zinc-containing substance quality in first day blast furnace of statistics；Unit is t；
TD2For zinc-containing substance quality in second day blast furnace of statistics；Unit is t；
TDnFor zinc-containing substance quality in n-th day blast furnace of statistics, the n is the natural number being not zero；Unit is t；
The TDnMeet following relationship:
TDn=(sinter furnace entering volume × sinter Zn content+pellet furnace entering volume × pellet Zn content+lump ore enters furnace
Amount × lump ore Zn content+coke furnace entering volume × coke Zn content+coal dust furnace entering volume × coal dust Zn content)-(discharge gas mud amount
× gas mud Zn content+discharge gas ash quantity × gas ash Zn content+discharge dedusting ash quantity × dedusting ash Zn content).
At the same time, the operation of blast furnace parameter setting of zinc-containing substance expulsive stage is specific as follows:
7) adjustment burden distribution matrix isOrIn any one；Further drive coal
Air-flow develops to center position；
8) control cloth angular difference is 9 °~10 °；Compared to the enrichment phase, cloth angle reduces；
9) 5~15% incoming air area is reduced on the basis of step 3), while controlled wind speed is 235~285m/s；Enhancing
Zinc-containing substance is discharged in wind speed；
10) oxygen enrichment percentage 2%~4% is controlled, 1200 DEG C~1250 DEG C of wind-warm syndrome, coal is than 150~165kg/tFe；
11) control coal gas tedge temperature is 150 DEG C~300 DEG C；
12) when blast furnace gas rate < 48%, blast furnace gas rate compared to 48% is every to reduce by 1%, reduces and smelts load
5%.If blast furnace gas rate >=48% does not change blast furnace process load；
Real-time monitoring blast furnace is discharged Zn content in gas mud, when the Zn content >=6%, mixes and receives to the gas mud
Collect and is sent into the recycling of downstream Zhi Xin enterprise, when 3%≤the Zn content < 6%, it will be sent after the gas mud mixed collection
To sintering plant as sintering deposit raw material, the Zn content < 3% described in 0 <, blast furnace operating mode is converted to zinc-containing substance enrichment
Phase.
In order to better explain the present invention, below in conjunction with the specific embodiment main contents that the present invention is furture elucidated, but
The contents of the present invention are not limited solely to following embodiment.
The present embodiment selects creation data of certain steel plant at certain month 2018, wherein detection discovery steel rolling neutrality sludge
Zn content is 7.1%；Blast furnace gas mud Zn content is 3.5%；Steel-smelting sewage sludge Zn content is 2.2%, and whole process dedusting ash zinc contains
Amount is 2.5%；Remaining dirt mud Zn content is lower, and Zn content is lower than 1%.
Steel rolling neutrality sludge Zn content is 7.1%；Blast furnace gas mud Zn content is 3.5%；Steel-smelting sewage sludge Zn content is
2.2%, whole process dedusting ash Zn content is 2.5%；Remaining dirt mud Zn content is lower, and Zn content is lower than 1%.
The blast furnace is added in zinc-containing raw materials, and blast furnace operating mode is divided into zinc-containing substance enrichment phase and zinc-containing substance exclusion
In two stages of phase, following different operation mode is taken respectively:
The operation of blast furnace parameter setting that zinc-containing substance is enriched with the phase is specific as follows:
1) setting burden distribution matrix is
2) control cloth angular difference is 10.5 °；
3) incoming air area is kept to account for the 0.34% of air port sectional area, while controlled wind speed is 230 ± 5m/s；
4) control oxygen enrichment percentage 4%, 1200 DEG C of wind-warm syndrome, coal ratio 170kg/tFe；
5) control coal gas tedge temperature is 100 DEG C~150 DEG C；
6) gas utilization rate control monitors water temperature difference 48%, keeps water temperature difference at 4 ± 0.5 DEG C.
By calculating, after blast furnace is continuously added to zinc-containing raw materials 15 days, adds up 20 tons of zinc content > in furnace, detect high fire grate
Gas mud Zn content is 5.8% out, and blast furnace is transferred to row's zinc operation mode.
At the same time, the operation of blast furnace parameter setting of zinc-containing substance expulsive stage is specific as follows:
7) adjustment burden distribution matrix isThe each smelting cycle of blast furnace initially and at the end of (6 hours be one
A period), it takes the burnt cloth of weight mine weight primary respectively, further increases burnt window thickness, the center of gas flow containing zinc is driven to be sent out
Exhibition；
8) control cloth angular difference is 9 °；Compared to the enrichment phase, cloth angle is smaller；
9) 10% incoming air area is reduced on the basis of step 3), while controlled wind speed is 250 ± 5m/s；Enhance wind speed,
Zinc-containing substance is discharged；
10) control oxygen enrichment percentage 3%, 1200 DEG C of wind-warm syndrome, coal ratio 160kg/tFe；
11) control coal gas tedge temperature is 150 DEG C~300 DEG C；Zinc-containing substance in Gas Flow is promoted to rise by coal gas
Pipe discharge；
12) blast furnace gas rate is down to 47%, reduces and smelts load 5%；
Real-time monitoring blast furnace discharge gas mud Zn content individually receives high zinc gas mud as Zn content > 6%
Collection, for the use of Zhi Xin enterprise.
After taking concentration row's zinc, zinc enriching quantity and discharge dirt mud Zn content are gradually decreased in furnace, when discharge gas mud zinc contains
When measuring < 6%, restore above-mentioned original collection mode, makes after gas mud is summarized with other low zinc fume mud collections for Iron Ore Matching in Sintering
With further, when gas mud Zn content < 3% is discharged, gradually reducing that center cloth is burnt, reduces top temperature, restore to containing zinc
Material collection phase operation mode.
Therefore, the present invention realizes circulation collection and the discharge of zinc-containing substance, and finally realizes that blast furnace process whole process produces
Effective recycling of the raw solid waste containing zinc.
Above embodiments are only best citing, rather than a limitation of the embodiments of the present invention.Except above-described embodiment
Outside, there are also other embodiments by the present invention.All technical solutions formed using equivalent substitution or equivalent transformation, all fall within this hair
The protection scope of bright requirement.
Claims (10)
1. a kind of method for dissolving the processing resource of solid waste containing zinc using blast furnace, it includes that will contain Zn content >=6% in zinc solid waste
Zinc-containing raw materials mixed collection is simultaneously sent into the recycling of downstream Zhi Xin enterprise, send after the zinc-containing raw materials mixed collection of Zn content < 6%
To sintering plant as sintering deposit raw material, and be arranged blast furnace operating mode include zinc-containing substance enrichment the phase and zinc-containing substance expulsive stage it
Between circulation；
The zinc-containing substance enrichment phase includes real-time monitoring and counts zinc-containing substance total amount in blast furnace, when zinc-containing substance total amount >=
20t, and in blast furnace discharge gas mud when Zn content >=5%, blast furnace operating mode is converted to zinc-containing substance expulsive stage, described to contain zinc
Substance expulsive stage includes Zn content in real-time monitoring blast furnace discharge gas mud, mixed to the gas mud when Zn content >=6%
Conjunction is collected and fed into the recycling of downstream Zhi Xin enterprise, when 3%≤the Zn content < 6%, and by the gas mud mixed collection
After send to sintering plant as sintering deposit raw material, the Zn content < 3% described in 0 <, blast furnace operating mode is converted to zinc-containing substance richness
The collection phase.
2. utilizing the method for the blast furnace consumption processing resource of solid waste containing zinc according to claim 1, it is characterised in that: described to contain zinc
The material collection phase, the calculation formula of zinc-containing substance total amount is as follows in blast furnace:
T=TD1+TD2+TD3+……TDn；
Wherein, T is zinc-containing substance total amount in blast furnace, unit t；
TD1For zinc-containing substance quality in first day blast furnace of statistics；Unit is t；
TD2For zinc-containing substance quality in second day blast furnace of statistics；Unit is t；
TDnFor zinc-containing substance quality in n-th day blast furnace of statistics, the n is the natural number being not zero；Unit is t；
The TDnMeet following relationship:
TDn=(sinter furnace entering volume × sinter Zn content+pellet furnace entering volume × pellet Zn content+lump ore furnace entering volume × block
Mine Zn content+coke furnace entering volume × coke Zn content+coal dust furnace entering volume × coal dust Zn content)-(discharge gas mud amount × gas
Mud Zn content+discharge gas ash quantity × gas ash Zn content+discharge dedusting ash quantity × dedusting ash Zn content).
3. the method according to claim 1 or claim 2 for dissolving the processing resource of solid waste containing zinc using blast furnace, it is characterised in that: described
Sintering deposit raw material is incorporated in blast furnace, is controlled into furnace Zn load < 1kg/tFe.
4. the method according to claim 1 or claim 2 for dissolving the processing resource of solid waste containing zinc using blast furnace, it is characterised in that: described
The zinc-containing substance enrichment phase further includes setting operation of blast furnace parameter, specific as follows:
1) setting burden distribution matrix isOrIn any one；
2) control cloth angular difference is 10 °~11 °；
3) incoming air area is kept to account for the 0.32%~0.35% of air port sectional area, while controlled wind speed is 225~250m/s；
4) oxygen enrichment percentage 3%~5% is controlled, 1200 DEG C~1250 DEG C of wind-warm syndrome, coal is than 160~175kg/tFe；
5) control coal gas tedge temperature is 100 DEG C~150 DEG C；
6) gas utilization rate control monitors water temperature difference 47%~50%, keeps water temperature difference at 3~6 DEG C.
5. utilizing the method for the blast furnace consumption processing resource of solid waste containing zinc according to claim 4, it is characterised in that: in step 2)
Controlling angular difference is 10.5 °.
6. utilizing the method for the blast furnace consumption processing resource of solid waste containing zinc according to claim 4, it is characterised in that: in step 3)
Incoming air area is kept to account for the 0.34% of cupola well sectional area.
7. utilizing the method for the blast furnace consumption processing resource of solid waste containing zinc according to claim 4, it is characterised in that: in step 4)
Controlling oxygen enrichment percentage is 4%.
8. the method for handling the resource of solid waste containing zinc using blast furnace consumption according to any one of claim 4 or 5 or 6 or 7,
It is characterized by: the zinc-containing substance expulsive stage also includes setting operation of blast furnace parameter, it is specific as follows:
7) adjustment burden distribution matrix isOrIn any one；
8) control cloth angular difference is 9 °~10 °；
9) 5~15% incoming air area is reduced on the basis of step 3), while controlled wind speed is 235~285m/s；
10) oxygen enrichment percentage 2%~4% is controlled, 1200 DEG C~1250 DEG C of wind-warm syndrome, coal is than 150~165kg/tFe；
11) control coal gas tedge temperature is 150 DEG C~300 DEG C；
12) when blast furnace gas rate < 48%, blast furnace gas rate compared to 48% is every to reduce by 1%, reduces and smelts load 5%.
9. utilizing the method for the blast furnace consumption processing resource of solid waste containing zinc according to claim 8, it is characterised in that: every in blast furnace
The starting or end of a smelting cycle take the burnt cloth of weight mine weight primary.
10. utilizing the method for the blast furnace consumption processing resource of solid waste containing zinc according to claim 8, it is characterised in that: control cloth
Expect that angular difference is 9 °, 10% incoming air area is reduced on the basis of step 3), controls oxygen enrichment percentage 3%.
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| CN110564971A (en) * | 2019-10-29 | 2019-12-13 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for recovering zinc from blast furnace gas mud |
| CN111304386A (en) * | 2020-03-11 | 2020-06-19 | 包头钢铁（集团）有限责任公司 | Method for promoting zinc in blast furnace |
| CN111733305A (en) * | 2020-06-15 | 2020-10-02 | 武汉钢铁有限公司 | Blast furnace high zinc load smelting method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110564971A (en) * | 2019-10-29 | 2019-12-13 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for recovering zinc from blast furnace gas mud |
| CN111304386A (en) * | 2020-03-11 | 2020-06-19 | 包头钢铁（集团）有限责任公司 | Method for promoting zinc in blast furnace |
| CN111733305A (en) * | 2020-06-15 | 2020-10-02 | 武汉钢铁有限公司 | Blast furnace high zinc load smelting method |
| CN111733305B (en) * | 2020-06-15 | 2022-03-15 | 武汉钢铁有限公司 | Blast furnace high zinc load smelting method |
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Application publication date: 20190917 |