CN209292440U - A kind of device that metallurgy dedusting ash containing zinc is administered and utilized - Google Patents
A kind of device that metallurgy dedusting ash containing zinc is administered and utilized Download PDFInfo
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- CN209292440U CN209292440U CN201821915981.2U CN201821915981U CN209292440U CN 209292440 U CN209292440 U CN 209292440U CN 201821915981 U CN201821915981 U CN 201821915981U CN 209292440 U CN209292440 U CN 209292440U
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- zinc
- furnace
- containing zinc
- dedusting ash
- dezincification
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- 239000011701 zinc Substances 0.000 title claims abstract description 240
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 215
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 210
- 238000005272 metallurgy Methods 0.000 title claims abstract description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 86
- 230000009467 reduction Effects 0.000 claims abstract description 80
- 239000000428 dust Substances 0.000 claims abstract description 60
- 239000002893 slag Substances 0.000 claims abstract description 60
- 229910052742 iron Inorganic materials 0.000 claims abstract description 43
- 238000009434 installation Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 26
- 238000001035 drying Methods 0.000 claims abstract description 15
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 12
- 230000001698 pyrogenic effect Effects 0.000 claims abstract description 5
- 230000010354 integration Effects 0.000 claims abstract description 4
- 239000010802 sludge Substances 0.000 claims description 41
- 230000008676 import Effects 0.000 claims description 26
- 239000003638 chemical reducing agent Substances 0.000 claims description 15
- 239000011819 refractory material Substances 0.000 claims description 11
- 239000000843 powder Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 230000001590 oxidative effect Effects 0.000 claims description 8
- 238000003723 Smelting Methods 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 8
- 239000007921 spray Substances 0.000 description 27
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 17
- 229910052760 oxygen Inorganic materials 0.000 description 17
- 239000001301 oxygen Substances 0.000 description 17
- 239000002245 particle Substances 0.000 description 16
- 238000006477 desulfuration reaction Methods 0.000 description 9
- 230000023556 desulfurization Effects 0.000 description 9
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 8
- 238000002156 mixing Methods 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 7
- 239000003034 coal gas Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 239000000571 coke Substances 0.000 description 5
- 239000000155 melt Substances 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000012216 screening Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical group C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 4
- 239000003830 anthracite Substances 0.000 description 4
- 235000013339 cereals Nutrition 0.000 description 4
- 239000003517 fume Substances 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 239000011787 zinc oxide Substances 0.000 description 4
- 239000011449 brick Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical group [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
Abstract
The utility model discloses a kind of device that metallurgical dedusting ash containing zinc is administered and utilized.The device includes the complexes of the first, second two-stage pyrogenic process dezincification and the first, second connected integration operation of zinc enriching apparatus twice；First order dezincification that is, second of zinc enriching apparatus, including sequentially connected pretreatment storehouse containing zinc gray, pelletizer, drying machine, feeder, rotary furnace, the first dust arrester installation；Second level dezincification that is, first time zinc enriching apparatus, including red slag sifter, red slag crusher, the low preheating furnace of dedusting ash containing zinc are molten to divide reduction furnace, the second dust arrester installation, desulfurizing iron slot.The utility model traditional rotary furnace and it is molten divide reduction furnace on the basis of, improve technique, carry out Technology Integration Innovation, it forms it into " rotary furnace+melt and divide reduction furnace " continuous two-stage dezincification and the low dedusting ash containing zinc of zinc enrichment administers the process units utilized and method twice in succession, completely new technological break-through is realized, the low dedusting ash containing zinc of metallurgy is made to realize innoxious governance and resource utilization.
Description
Technical field
The utility model relates to a kind of devices that metallurgical dedusting ash containing zinc is administered and utilized, and belong to environmental protection and energy saving technology neck
Domain.
Background technique
Due to the use of iron ore association zinc and zinc-plated iron-steel waste material, zinc enters Steel Production Flow Chart and is inevitable；
Again since zinc is a kind of harmful element to blast furnace, today that blast furnace is more and more large-scale in China, cost is increasingly higher, from steel
Open circuit removing zinc in iron production procedure, it appears more and more important.Generated in China Steel production process it is all kinds of (electric furnace, converter,
Blast furnace) dedusting ash containing zinc (dry method dust is ash, and wet dedusting is mud, and ash is referred to as in specification and claims) is annual up to
Up to ten million tons, Zn content is in 0.1-10% or higher.Wherein 4% low dedusting ash containing zinc below returns to sintering plant mostly in the past and makes
With recycling iron, but currently in order to the increasingly higher blast furnace of protection cost, mostly directly outlet landfill, stack, cause to need to administer
Quantity containing zinc gray be significantly increased.The improvement of the dedusting ash containing zinc is many using method, first is that removing zinc with rotary kiln technology；Second is that
Zinc is removed with rotary hearth furnace technology；Third is that removing zinc with small furnace technology.But traditional rotary kiln technology dezinc degree is low, there is 1% or so
Zinc is de- not to be fallen, and the dedusting ash of 4% or less Zn content is not handled；Rotary hearth furnace technological investment is too big, and treatment cost is high；Small height
Furnace then belongs to officially eliminated by the State technology.It covers all therefore it provides one kind is with low investment, dezinc degree is high, just contains zinc gray, meet state
The technology and equipment of family's industrial policy, is expected by industry.
Summary of the invention
The utility model is intended to provide a kind of device that metallurgical dedusting ash containing zinc is administered and utilized, it is with low investment, dezinc degree is high,
Height covers all containing zinc gray, meets national industrial policies.
The improvement of the utility model had both paid close attention to 4% or more Zn content up to zinc in 20% dedusting ash containing zinc using object
Removing, and paid special attention to the zinc in the low dedusting ash containing zinc of Zn content 0.1-4% and the red slag of first order dezincification device burner high temperature
The removing and enrichment of middle entrapped zinc utilize；Its process flow: it for 4% or more dedusting ash containing zinc, is filled by first order dezincification
Setting realizes first time dezincification, realizes second of dezincification by second level dezincification device；To the low dedusting ash containing zinc of 0.1-4%
For, the enrichment of first time zinc is realized by second level dezincification device, it is rich to realize second of zinc by first order dezincification device
Collection.By on the basis of improved rotary furnace thermal process, increase by one it is molten divide reduction furnace, the two, which combines, carries out continuous two-stage
Dezincification and twice in succession zinc are enriched with, and Zn content reaches 55% or more from the secondary oxidative zinc that the first dust arrester installation comes out, from molten iron
It is substantially free of zinc in the molten iron that outlet comes out, Zn content is lower than 0.1% from the grain slag that slag notch comes out, and realizes and low removes containing zinc
The innoxious governance and resource utilization of dust.The utility model is a kind of removing for metallurgy industry is all kinds of containing zinc for integrated innovation
Dust, it is thorough using the continuous two-stage dezincification of improved " rotary furnace+melt and divide reduction furnace " integrated technique and zinc enrichment twice in succession
The process units and method using the dedusting ash containing zinc are administered in bottom.
The utility model provides a kind of device that metallurgical dedusting ash containing zinc is administered and utilized, including the first, second two-stage
Pyrogenic process zinc removes and the complexes of the first, second integrated operating process that pyrogenic process zinc enriching apparatus is connected twice.
First order dezincification that is, second of zinc enriching apparatus, including it is sequentially connected pretreatment storehouse containing zinc gray, pelletizer, dry
Dry machine, feeder, rotary furnace, the first dust arrester installation；
Second level dezincification that is, first time zinc enriching apparatus, including red slag sifter, red slag crusher, low dedusting ash containing zinc
Preheating furnace, it is molten to divide reduction furnace, the second dust arrester installation, desulfurizing iron slot；It is described molten reduction furnace to be divided to be the vertical of inner lining refractory
Formula tubular furnace, there is exhaust outlet at the top of reduction furnace, cylinder side successively have from top to bottom hot air inlet, reducing agent import,
The import of warm sludge containing zinc, slag notch, molten iron outlet.
Molten to divide reduction furnace internal structure point upper, middle and lower segment, lower part is to build the smelting zone for having refractory material, and middle part is to build
There is the reduction slag area of refractory material and water-cooling wall, top is to build the oxidizing fire area for having water-cooling wall；
Described melt divides reduction furnace, exports outer connection desulfurizing iron slot in its molten iron；Its import of warm sludge containing zinc is externally provided with warm sludge
Bunker, warm sludge bunker are connect with the low preheating furnace of dedusting ash containing zinc, are also connected by warm sludge conveying device with red slag crusher；It is arranged
The second dust arrester installation outside port connects the pretreatment storehouse containing zinc gray in first order dezincification device by powder conveying pipeline.
Further, described melt is divided in reduction furnace, and refractory material combines carbonization using high density SiAiON base refractory material
Silicon substrate brick is SiC reinforcement sial based composites brick, builds and use high alumina phosphate mud, invaded with improving the anti-zinc of furnace lining
Corrosion.
In above-mentioned apparatus, first dust arrester installation, the second dust arrester installation include in cyclone separator or bagroom
One or two；The low preheating furnace of dedusting ash containing zinc includes fluidized bed furnace or rotary furnace.
The utility model provides the method that metallurgy dedusting ash containing zinc is administered and utilized using above-mentioned apparatus, including
Following steps:
(1) first order dezincification: by the dedusting ash containing zinc of 4% or more the Zn content from smeltery through at pretreatment storehouse containing zinc gray
Enter pelletizer after reason to be granulated, grain diameter 3-5mm, after the particle made enters drying machine drying to water content 1-5%
Enter rotary furnace preheating, reduction, oxidation through feeder, carries out first time dezincification；Rotary furnace operation temperature is 1100-1200 DEG C；
(2) second level dezincification and the enrichment of first time zinc are carried out in second level dezincification device, which divides in reduction furnace molten
It carries out simultaneously:
Second level dezincification: the red slag of high temperature below of rotary furnace burner Zn content 1% sequentially enters red slag sifter and red slag is broken
Broken machine carries out hot screening, is crushed, and is crushed to particle less than 8mm；The broken red slag of high temperature is defeated by warm sludge conveyance conduit
It send to warm sludge bunker, sprays into molten divide in reduction furnace from the import of warm sludge containing zinc with spray gun；By solid reductant spray gun from reducing agent
Import sprays into molten divide in reduction furnace；The oxygen-enriched hot-air of heating is blasted into molten divide in reduction furnace through air inlet；Rotary furnace burner goes out
The oxidation state warm sludge of high temperature containing zinc come, and the reducing agent, the oxygen-enriched hot-air that spray into simultaneously are restored in furnace, oxidation reaction,
Further remove zinc；Zinc oxide is reduced to zinc fume in reducing zone, and zinc fume rises to the molten zoneofoxidation for dividing reduction furnace top again
It is oxidized to zinc oxide, related other volatilizable compositions include that coal gas is discharged from furnace roof exhaust outlet, and the zinc-containing dust of enrichment is through gathering dust
Device is transported to the pretreatment storehouse containing zinc gray of first order dezincification device by powder conveying pipeline after collecting；Coal gas enters at coal gas
Reason system；
The enrichment of first time zinc: the low dedusting ash containing zinc of the Zn content 0.1-4% from smeltery is sent into low dedusting ash containing zinc
Preheating furnace is preheating to 600-800 DEG C and the red slag mixing of the high temperature below of rotary furnace burner Zn content 1%, with spray gun from containing zinc heat
Slag import spray into it is molten divides in reduction furnace, carry out the first time enrichment of zinc in low dedusting ash containing zinc, the zinc-rich dust after enrichment is from molten
After dividing discharge at the top of reduction furnace, the dust collecting outside Jing Rongfen reduction furnace top vent to collect, pass through powder conveying pipe
Road goes pretreatment storehouse containing zinc gray；
(3) second of zinc enrichment is carried out in first order dezincification device:
Zinc-rich dust after the enrichment of first time zinc enters pretreatment storehouse containing zinc gray, the dedusting ash containing zinc with 4% or more Zn content
Mixing carries out being enriched with again for first order dezincification and second zinc, and the secondary oxidative zinc of 55% or more Zn content is from rotary furnace furnace later
Last row goes out, and is recycled after dust arrester installation is collected；Tail gas is discharged through air-introduced machine, chimney again after the processing of other devices；
(4) it melts and the regular discharge molten iron in molten iron outlet of reduction furnace lower part is divided to enter desulfurizing iron slot desulfurization, the iron after desulfurization
Water goes subsequent processing to be utilized；Other fixednesies, infusibility residue are periodically discharged from the molten slag notch divided in the middle part of reduction furnace.
Above-mentioned percentage composition is weight percentage.
In the above method, slag reduction in-furnace temperature maintains 1400-1450 DEG C.
In the above method, the oxygen volume content in the oxygen-enriched hot-air is 21--50%, hot air temperature 1000--
1200℃；The solid reductant is anthracite or semi-coke end.
In the above method, the revolution red slag of outlet of still is screened, broken temperature is 600-800 DEG C, through low dedusting containing zinc
The temperature of the low warm sludge containing zinc of grey preheating furnace preheating is 600-800 DEG C.
The technical characterstic and beneficial effect of the utility model are: a, passing through rotary furnace to the dedusting ash of 4% or more Zn content
It is divided to reduction furnace two step dezincifications with molten, the zinc in dedusting ash is made to remove ratio more thoroughly；B, to the low dedusting ash containing zinc of the 0.1-4% containing zinc
In zinc through superfusion divide reduction furnace and rotary furnace it is secondary enrichment be able to resource utilization；C, the red slag of rotary furnace burner is without supercooling
Directly divide reduction apparatus dezincification into the second level is molten, thermal loss is small, and waste heat is fully used；D, byproduct molten iron is through desulfurization
Become low-sulfur molten iron afterwards, improves molten iron quality.
The utility model provides a kind of metallurgy industry low dedusting ash containing zinc on the basis of integrated innovation to be administered and utilizes
The device of zinc removing and zinc enrichment has paid special attention to the removing enrichment and first of zinc in the low dedusting ash containing zinc of Zn content 0.1-4%
The enrichment removing of entrapped zinc in the grade red slag of dezincification device burner high temperature, it is with low investment, dezinc degree is high, just can carry out containing zinc gray
It handles, meet national industrial policies, low dedusting ash containing zinc is made to realize innoxious governance and resource utilization, have significant new
Newness, creativeness and practicability.
Detailed description of the invention:
Fig. 1 is the technological process block-diagram of the utility model zinc removing and enriching apparatus.
Fig. 2 is the structural schematic diagram of the utility model zinc removing and enriching apparatus.
Fig. 3 is the molten structural schematic diagram for dividing reduction furnace of the utility model.
In figure: 1. pretreatment storehouses containing zinc gray, 2. pelletizers, 3. drying machines, 4. feeders, 5. rotary furnaces, 6. first are gathered dust
Device, 7. air-introduced machines, 8. chimneys, 9. red slag sifters, 10. red slag crushers, the 11. low preheating furnaces of dedusting ash containing zinc, 12. are melted
Divide reduction furnace, 13. second dust arrester installations, 14. desulfurizing iron slots, 15. exhaust outlets, 16. hot air inlets, 17. oxidizing fires
Area, 18. imports of warm sludge containing zinc, 19. slag areas, 20. smelting zones, the outlet of 21 molten iron, 22. refractory furnace bottoms, 23. slag notches, 24. are also
Former agent import, the resistance to material of 25. side walls and water-cooling wall, 26. top water-cooling walls.
Specific embodiment
The utility model is further illustrated below by embodiment, but is not limited to following embodiment.
As shown in Fig. 1 ~ 3, a kind of device that metallurgy dedusting ash containing zinc is administered and utilized, including the first, second two-stage pyrogenic process
The complexes for the integration operation that dezincification and the first, second two-stage zinc enriching apparatus are connected；
First order dezincification that is, second of zinc enriching apparatus, including sequentially connected pretreatment storehouse containing zinc gray 1, pelletizer 2,
Drying machine 3, feeder 4, rotary furnace 5, the first dust arrester installation 6；
Second level dezincification that is, first time zinc enriching apparatus, including red slag sifter 9, red slag crusher 10 are low to remove containing zinc
Dust preheating furnace 11, it is molten to divide reduction furnace 12, the second dust arrester installation 13, desulfurizing iron slot 14；It is described molten reduction furnace 12 to be divided to be interior
The vertical tubular furnace of lining refractories, there is exhaust outlet 15 at the top of reduction furnace, cylinder side successively have from top to bottom hot-air into
Port 16, reducing agent import 24, the import of warm sludge containing zinc 18, slag notch 23, molten iron outlet 21.
It is described it is molten divide reduction furnace internal structure point upper, middle and lower segment, lower part is to build the smelting zone 20 for having refractory material,
Middle part is to build the reduction slag area 19 for having refractory material and water-cooling wall, and top is to build the oxidizing fire area 17 for having water-cooling wall.
Described melt divides reduction furnace, connects desulfurizing iron slot 14 outside its molten iron outlet 21；Its 18 peripheral hardware of import of warm sludge containing zinc
There is warm sludge bunker, warm sludge bunker is connect with the low preheating furnace of dedusting ash containing zinc 11, also passes through warm sludge conveying device and red slag crusher
10 connections；Molten the second dust arrester installation 13 divided outside reduction furnace exhaust outlet 15 connects first order dezincification device by powder conveying pipeline
In pretreatment storehouse containing zinc gray 1.
Described melt is divided in reduction furnace, and refractory material uses high density SiAiON base refractory material silicon carbide base brick, is built
It builds using high alumina phosphate mud, to improve the anti-zinc aggressivity of furnace lining.
First dust arrester installation 6, the second dust arrester installation 13 include one of cyclone separator or bagroom or
Two kinds；The low preheating furnace of dedusting ash containing zinc includes fluidized bed furnace or rotary furnace.
The utility model provides a kind of method that metallurgical dedusting ash containing zinc is administered and utilized, using above-mentioned apparatus, including
Following steps:
(1) the dedusting ash containing zinc of 4% or more the Zn content from smeltery first order dezincification: is passed through into pretreatment storehouse containing zinc gray 1
Enter pelletizer 2 after processing to be granulated, grain diameter 3-5mm, it is dry to water content 1- that the particle made enters drying machine 3
Enter the preheating of rotary furnace 5, reduction, oxidation through feeder 4 after 5%, carries out first time dezincification；5 operation temperature of rotary furnace is 1100-
1200℃；
(2) second level dezincification and the enrichment of first time zinc are carried out in second level dezincification device, which divides in reduction furnace molten
It carries out simultaneously:
Second level dezincification: the red slag of high temperature below of 5 burner Zn content of rotary furnace 1% sequentially enters red slag sifter 10 and red
Slag crusher 11 carries out hot screening, is crushed, and is crushed to particle less than 8mm；The broken red slag of high temperature is conveyed by warm sludge
Pipeline sprays into molten divide in reduction furnace 12 from the import of warm sludge containing zinc 18 with spray gun to warm sludge bunker；Solid reductant is sprayed
Rifle sprays into molten divide in reduction furnace from reducing agent import 24；The oxygen-enriched hot-air of heating is blasted molten point also through hot air inlet 16
In former furnace；The oxidation state warm sludge of high temperature containing zinc that rotary furnace burner comes out, and spray into simultaneously reducing agent, oxygen-enriched hot-air is in furnace
It is restored, oxidation reaction, further removes zinc；Zinc oxide is reduced to zinc fume in reduction slag area 19, and zinc fume rises to
Molten to divide the oxidizing fire area 17 on reduction furnace top to reoxidize for zinc oxide, related other volatilizable compositions include that coal gas is arranged from furnace roof
Port 15 is discharged, and the zinc-containing dust of enrichment is transported to first order dezincification device by powder conveying pipeline after dust arrester installation is collected
Pretreatment storehouse containing zinc gray 1；Coal gas enters coal gas processing system；
The enrichment of first time zinc: the low dedusting ash containing zinc of Zn content 0.1-4% is sent into the low preheating furnace of dedusting ash containing zinc 11, in advance
Heat is to 600-800 DEG C and the red slag mixing of 5 burner Zn content 1% of rotary furnace high temperature below, with spray gun from the import of warm sludge containing zinc 18
It sprays into melt and divide in reduction furnace 12, carry out the first time enrichment of zinc in low dedusting ash containing zinc, the zinc-rich dust after enrichment is gone back from molten point
It is discharged at the top of former furnace 12, after Jing Rongfen reduction furnace flour dust on top collection device is collected, is gone by powder conveying pipeline pre- containing zinc gray
Handle storehouse 1；
(3) second of zinc enrichment is carried out in first order dezincification device:
Zinc-rich dust after the enrichment of first time zinc enters pretreatment storehouse containing zinc gray 1, the dedusting containing zinc with 4% or more Zn content
Ash mixing carries out being enriched with again for first order dezincification and second zinc, and the secondary oxidative zinc of 55% or more Zn content is from rotary furnace later
5 furnace last rows go out, and recycle after the collection of the first dust arrester installation 6；Tail gas is after the processing of other devices again through air-introduced machine 7, chimney row 8
Discharge；
(4) it melts and the regular discharge molten iron in molten iron outlet 21 of reduction furnace lower part is divided to enter 14 desulfurization of desulfurizing iron slot, after desulfurization
Molten iron go subsequent processing to be utilized；Other fixednesies, infusibility residue are fixed from the molten slag notch 23 divided in the middle part of reduction furnace
Phase discharge.
Above-mentioned percentage composition is weight percentage.
Molten that reduction furnace is divided to maintain micro-negative pressure operation, a molten point reducing zone temperature maintains 1400-1450 DEG C.
Oxygen volume content in the oxygen-enriched hot-air is 21--50%, and hot air temperature is 1000--1200 DEG C；It is described solid
Body reducing agent is anthracite or semi-coke end.
Turn round that the red slag of outlet of still is screened, broken temperature is 600-800 DEG C, through the preheating of the low preheating furnace of dedusting ash containing zinc
The low warm sludge containing zinc temperature be 600-800 DEG C.
Below by specific implementation process, it is described in detail and carries out what the low dedusting ash containing zinc of metallurgy was administered by above-mentioned complexes
The method of zinc removing and enrichment.
Embodiment one:
The dedusting ash containing zinc of 4-6% Zn content is used into disc granulation after pre- ingredient in the pretreatment storehouse of dedusting ash containing zinc 1
Machine 2 is granulated, 3-5 millimeter of partial size, laggard drying machine 3 it is dry, the particle after drying is restored into rotary furnace 5 by feeder 4,
Oxidation carries out first time dezincification, and rotary furnace operation temperature is 1100-1150 DEG C；What is volatilized contains 55% or more dust of zinc from furnace tail
It collects through the first dust arrester installation 6 into next workshop section and recycles out；The temperature below of burner Zn content 1% is 800-1000 DEG C
The red slag of high temperature carries out hot screening through red slag sifter 9, red slag crusher 10, is crushed, and is crushed to particle less than 8mm；After being crushed
600 degrees Celsius of high-temperature particle is transported to warm sludge bunker spray gun and sprays into melt through warm sludge conveying device to be divided in reduction furnace 12, is carried out
Second of dezincification melts point reduction in-furnace temperature control at 1400-1450 degrees Celsius；Anthracite is sprayed into from reducing agent import 24 simultaneously
With semi-coke end, the oxygen-enriched hot-air of oxygen content 21% is blasted from hot air inlet 16；Zinc-containing dust by secondary dezincification is from molten
The exhaust outlet 15 divided at the top of reduction furnace is discharged, and after the collection of the second dust arrester installation 13, is transported to through powder transfer pipelines and removes containing zinc
Dust pretreatment storehouse 1.
The low dedusting ash containing zinc of 3-4% Zn content is preheating to 600 degrees Celsius into low dedusting ash containing zinc preheating rotary furnace 11,
After being crushed red slag mixing with the burner from red slag crusher 10, the import of warm sludge containing zinc 18 of Cong Rongfen reduction furnace is sprayed into spray gun
It is molten to divide in reduction furnace, the first time zinc enrichment of the low dedusting ash containing zinc is carried out, the zinc-rich dust after enrichment divides at the top of reduction furnace from molten
Exhaust outlet 15 be discharged, through the second dust arrester installation 13 collection after, be transported to the pretreatment storehouse of dedusting ash containing zinc through powder transfer pipelines
1, through first order dezincification that is, second of zinc enriching apparatus, comes out containing 55% or more dust of zinc from furnace tail after enrichment and gather dust through first
Device 6 is collected to be recycled into next workshop section.
Molten iron is periodically released from molten iron outlet 21 into after 14 desulfurization of desulfurizing iron slot, is recycled into next workshop section.
Embodiment two:
By the dedusting ash containing zinc of 6-8% Zn content in the pretreatment system of dedusting ash containing zinc after pre- ingredient, it is granulated with tooth is stirred
Machine is granulated, 3-5 millimeter of partial size, laggard drying machine it is dry, by feeder by the particle after drying into rotary kiln reduction, aoxidize
First time dezincification is carried out, rotary furnace operation temperature is 1150-1200 DEG C；It comes out containing 55% or more dust of zinc from furnace tail and is received through first
Dirt device is collected to be recycled into next workshop section；The red slag of the high temperature that 1% following temperature of burner Zn content is 800-1000 DEG C carries out hot sieve
Divide, is broken, being crushed to particle less than 8mm；700 degrees Celsius of high-temperature particle is transported to warm sludge through warm sludge conveying device after will be broken
Bunker spray gun, which sprays into equipment 12 and melts, to be divided in reduction furnace, and second of dezincification is carried out；Molten point of reduction in-furnace temperature control is in 1400-
1450 degrees Celsius；Anthracite is sprayed into from reducing agent import simultaneously, the oxygen-enriched hot-air of oxygen content 50% is blasted from hot-air inlets；
Zinc-containing dust by secondary dezincification is discharged from the molten exhaust outlet divided at the top of reduction furnace, after the collection of the second dust arrester installation, Hui Han
Zinc gray pretreatment storehouse carries out the pretreatment of dedusting ash containing zinc.
The dedusting ash containing zinc of 2-3% Zn content is preheating to 700 degrees Celsius and furnace into low dedusting ash containing zinc preheating rotary furnace
After head is crushed red slag mixing, the warm sludge import spray gun of Cong Rongfen reduction furnace, which sprays into melt, to be divided in reduction furnace, carries out low dedusting containing zinc
The first time zinc enrichment of ash melts point reduction in-furnace temperature control at 1400-1450 degrees Celsius；Zinc-rich dust after enrichment is from molten point
Exhaust outlet discharge at the top of reduction furnace, after the collection of the second dust arrester installation, into the pretreatment storehouse of dedusting ash containing zinc, through first order dezincification
That is, second of zinc enriching apparatus, 55% or more the dust containing zinc are recycled into next workshop section.
Molten iron is periodically released from molten iron outlet into after desulfurizing iron slot desulfurization, is recycled into next workshop section.
Embodiment three:
By the dedusting ash containing zinc of 8-10% Zn content in the pretreatment storehouse of dedusting ash containing zinc after pre- ingredient, it is granulated with tooth is stirred
Machine is granulated, 3-5 millimeter of partial size, laggard drying machine it is dry, by feeder by the particle after drying into rotary kiln reduction, aoxidize
First time dezincification is carried out, rotary furnace operation temperature is 1150-1200 DEG C；It comes out containing 55% or more dust of zinc from furnace tail and is received through first
Dirt device is collected to be recycled into next workshop section；The red slag of the high temperature of 800-1000 DEG C of 1% or less burner Zn content carries out hot screening, breaks
It is broken, particle is crushed to less than 8mm；750 degrees Celsius after sieving approach of high-temperature particle is transported to warm sludge through warm sludge conveying device
Bunker spray gun, which sprays into melt, to be divided in reduction furnace, and second of dezincification is carried out；Molten point of reduction in-furnace temperature control is Celsius in 1400-1450
Degree；Semi-coke end is sprayed into from reducing agent import simultaneously, the oxygen-enriched hot-air of oxygen content 30% is blasted from hot-air inlets；By secondary
The zinc-containing dust of dezincification is discharged from the molten exhaust outlet divided at the top of reduction furnace, after the collection of the second dust arrester installation, through dust delivery pipe
Road is delivered to pretreatment storehouse containing zinc gray.
The low dedusting ash containing zinc of 1-2% Zn content is preheating to 750 degrees Celsius into low dedusting ash containing zinc preheating fluidized bed furnace, and
After the burner from red slag sifter, red slag crusher conveyed through warm sludge conveying device is crushed red slag mixing, from molten point of reduction
The warm sludge import spray gun of furnace, which sprays into melt, to be divided in reduction furnace, and the first time zinc enrichment of the low dedusting ash containing zinc, the richness after enrichment are carried out
Zinc powder dirt be discharged from the molten exhaust outlet divided at the top of reduction furnace, after the second dust arrester installation is collected, into pretreatment storehouse containing zinc gray, through the
Level-one dezincification that is, second of zinc enriching apparatus, 55% or more the dust containing zinc is recycled into next workshop section after enrichment.
Molten iron is periodically released from molten iron outlet into after desulfurizing iron slot desulfurization, is recycled into next workshop section.
Example IV:
The dedusting ash containing zinc of 10% or more Zn content is made after pre- ingredient with disk in the pretreatment storehouse of dedusting ash containing zinc
Grain machine is granulated, 3-5 millimeter of partial size, laggard drying machine dry, by feeder by the particle after drying into rotary kiln reduction, oxygen
Change and carry out first time dezincification, rotary furnace operation temperature is 1150-1200 DEG C；It is come out from furnace tail through first containing 55% or more dust of zinc
Dust arrester installation is collected to be recycled into next workshop section；The red slag of high temperature that 1% following temperature of burner Zn content is 800-1000 DEG C is through red slag
Sifter, red slag crusher carry out hot screening, are crushed to particle less than 8mm；800 degrees Celsius of high-temperature particle is through warm after will be broken
Slag conveying device is transported to warm sludge bunker preposition outside the import of warm sludge containing zinc, with spray gun spray into it is molten divide in reduction furnace carries out for the second time
Dezincification；Molten point of 1400-1450 degrees Celsius of in-furnace temperature of reduction；Semi-coke end is sprayed into from reducing agent import simultaneously, from hot-air inlets
Blast the oxygen-enriched hot-air of oxygen content 40%；Zinc-containing dust by secondary dezincification is discharged from the molten exhaust outlet divided at the top of reduction furnace,
After the collection of the second dust arrester installation, pretreatment storehouse containing zinc gray is delivered to through powder transfer pipelines.
The dedusting ash containing zinc of 0.1-1% Zn content is preheating to 800 degrees Celsius into low dedusting ash containing zinc preheating fluidized bed furnace, and
After the burner from red slag crusher conveyed through warm sludge conveying device is crushed red slag mixing, sprayed together from warm sludge import with spray gun
Enter to melt and divide in reduction furnace, carry out the first time zinc enrichment of the low dedusting ash containing zinc, the zinc-rich dust of enrichment divides at the top of reduction furnace from molten
Exhaust outlet discharge, after the collection of the second dust arrester installation, into pretreatment storehouse containing zinc gray, through first order dezincification that is, second of zinc richness
Acquisition means, 55% or more the dust containing zinc is recycled into next workshop section after enrichment.
Molten iron is periodically released from molten iron outlet into after desulfurizing iron slot desulfurization, is recycled into next workshop section.
Claims (4)
1. a kind of device that metallurgy dedusting ash containing zinc is administered and utilized, it is characterised in that: including the first, second two-stage pyrogenic process dezincification
And first, second twice zinc enriching apparatus be connected integration operation complexes；
First order dezincification that is, second of zinc enriching apparatus, including sequentially connected pretreatment storehouse containing zinc gray, pelletizer, drying
Machine, feeder, rotary furnace, the first dust arrester installation；
Second level dezincification that is, first time zinc enriching apparatus, including red slag sifter, red slag crusher, the low preheating of dedusting ash containing zinc
Furnace, it is molten to divide reduction furnace, the second dust arrester installation, desulfurizing iron slot；It is described molten reduction furnace to be divided to be the vertical cylinder of inner lining refractory
Shape furnace, there is exhaust outlet at the top of reduction furnace, and successively there are hot air inlet, reducing agent import in cylinder side, containing zinc from top to bottom
Warm sludge import, slag notch, molten iron outlet.
2. the device that metallurgy dedusting ash containing zinc according to claim 1 is administered and utilized, it is characterised in that: described molten point
Reduction furnace internal structure divides upper, middle and lower segment, and lower part is to build the smelting zone for having refractory material, middle part be build have refractory material and
The reduction slag area of water-cooling wall, top are to build the oxidizing fire area for having water-cooling wall.
3. the device that metallurgy dedusting ash containing zinc according to claim 1 is administered and utilized, it is characterised in that: described molten point also
Former furnace exports outer connection desulfurizing iron slot in its molten iron；Its import of warm sludge containing zinc is externally provided with warm sludge bunker, and warm sludge bunker contains with low
The connection of zinc dedusting ash preheating furnace, is also connected by warm sludge conveying device with red slag crusher；Second outside its exhaust outlet gathers dust dress
Set the pretreatment storehouse containing zinc gray connected in first order dezincification device by powder conveying pipeline.
4. the device that metallurgy dedusting ash containing zinc according to claim 1 is administered and utilized, it is characterised in that: described first receives
Dirt device, the second dust arrester installation include one or both of cyclone separator or bagroom；The low dedusting containing zinc
Grey preheating furnace includes fluidized bed furnace or rotary furnace.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821915981.2U CN209292440U (en) | 2018-11-21 | 2018-11-21 | A kind of device that metallurgy dedusting ash containing zinc is administered and utilized |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821915981.2U CN209292440U (en) | 2018-11-21 | 2018-11-21 | A kind of device that metallurgy dedusting ash containing zinc is administered and utilized |
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| CN209292440U true CN209292440U (en) | 2019-08-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306407A (en) * | 2018-11-21 | 2019-02-05 | 山西于斯为盛环保科技有限公司 | A kind of device and method that metallurgy dedusting ash containing zinc is administered and utilized |
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2018
- 2018-11-21 CN CN201821915981.2U patent/CN209292440U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306407A (en) * | 2018-11-21 | 2019-02-05 | 山西于斯为盛环保科技有限公司 | A kind of device and method that metallurgy dedusting ash containing zinc is administered and utilized |
| CN109306407B (en) * | 2018-11-21 | 2024-01-19 | 山西于斯为盛环保科技有限公司 | Device and method for treating and utilizing metallurgical zinc-containing dust |
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