CN208733192U - A kind of device that zinc-iron-containing dust mud resource utilizes - Google Patents
A kind of device that zinc-iron-containing dust mud resource utilizes Download PDFInfo
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- CN208733192U CN208733192U CN201821303264.4U CN201821303264U CN208733192U CN 208733192 U CN208733192 U CN 208733192U CN 201821303264 U CN201821303264 U CN 201821303264U CN 208733192 U CN208733192 U CN 208733192U
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- 239000000428 dust Substances 0.000 title claims abstract description 36
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 238000003723 Smelting Methods 0.000 claims abstract description 41
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 40
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000011701 zinc Substances 0.000 claims abstract description 35
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 35
- 230000009467 reduction Effects 0.000 claims abstract description 31
- 239000000779 smoke Substances 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 24
- 229910052742 iron Inorganic materials 0.000 claims abstract description 20
- 238000001035 drying Methods 0.000 claims abstract description 19
- 239000002918 waste heat Substances 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 238000010079 rubber tapping Methods 0.000 claims abstract description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 24
- 239000003546 flue gas Substances 0.000 claims description 24
- 238000002844 melting Methods 0.000 claims description 19
- 230000008018 melting Effects 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 238000012216 screening Methods 0.000 claims description 11
- 239000011324 bead Substances 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 239000003517 fume Substances 0.000 claims description 5
- 239000003500 flue dust Substances 0.000 claims description 4
- 238000005453 pelletization Methods 0.000 claims description 4
- 239000002893 slag Substances 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 238000012797 qualification Methods 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 abstract description 6
- 239000001301 oxygen Substances 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000003034 coal gas Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 8
- 239000007789 gas Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000011787 zinc oxide Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 239000000571 coke Substances 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000011133 lead Substances 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000004047 hole gas Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910052844 willemite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
- 150000003752 zinc compounds Chemical class 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Manufacture Of Iron (AREA)
Abstract
The utility model proposes a kind of device that zinc-iron-containing dust mud resource utilizes, including pre-reducing furnace, using annular pre-reducing furnace form, including proportioner, mixing arrangement, press ball device, drying device, annular pre-reducing furnace device and discharge device；Whole reducing and smelting furnace is connected to the pre-reducing furnace, and the prereduction material after pre-reducing furnace reduction enters whole reducing and smelting furnace, and the end reducing and smelting furnace uses vertical hot air blast furnace, including feed proportioning system, feeding device, tapping device；Smoke processing system is connected to the pre-reducing furnace and whole reducing and smelting furnace, and the smoke processing system includes expansion chamber, waste heat boiler, heat exchanger, deduster, blower and chimney.The utility model can be by iron content utilization of waste as resource containing zinc, directly production molten iron and oxygen enrichment zinc powder dirt.
Description
Technical field
The utility model relates to metal fixed-end forces and resource utilization fields, specially produce in metal smelt production process
The Treatment and recovery of raw solid waste utilizes, and in particular to a kind of device that zinc-iron-containing dust mud resource utilizes.
Background technique
Iron and steel enterprise's dirt mud is largely to return to sintering to recycle in enterprise at present, and zinc is nonferrous heavy metal element,
Its boiling point is only 907 DEG C.It is reduced into the zinc compound in blast furnace in blast furnace middle and upper part, is dispersed in bottom house with steam state
It in blast furnace gas and rises with it, a part is penetrated into the stomata of furnace lining, and a part is absorbed by the rear furnace charge added, and there are also one
Divide with coal gas outside furnace roof evolution furnace, into gas dust removal system, with the reduction of temperature, it is liquid that zinc can agglomerate again from steam state
Or crystallization is solid-state, is oxidized to zinc oxide again.
Furnace charge smelting process is entered by the zinc that furnace charge absorbs again.Then more zinc are reduced out, are again introduced into coal gas
In, zinc concentration in coal gas is increased, is absorbed again by furnace charge.And so on constantly, it is rich just to constitute circulation of the zinc in blast furnace
Collection is called " circulation in furnace ".Therefore, zinc reachable very high concentration in coal gas, even in saturation state.Enter with coal gas and removes
Cold analysis at subparticle, is deposited in pipeline or furnace dirt i.e. gas ash by the zinc fume of dirt system.Match if furnace dirt participates in sinter
Material, then in blast furnace --- around the another closed circulation of knot factory asked and constitute zinc, referred to as " the furnace outer circulation " of zinc." furnace outer circulation "
It has been further exacerbated by " circulation in furnace ".Since double circulation acts on, zinc is caused largely to deposit in furnace charge, furnace lining and attachment,
Many-sided harm is brought to blast fumance.It is main as follows:
1) so that furnace charge decline is had some setbacks, even result in hanging.
It is reduced with coal gas ascending temperature, zinc vapor condensing is at tiny pellet or is oxidized to zinc oxide, adheres to or be deposited on furnace
Causes bed permeability to degenerate in material hole, and coal gas is interfered to pass through, or even hanging occurs, and influences blast furnace and normally produces.
2) deposition of furnace lining surface zinc
Shaft middle and upper part steam state zinc, or it is adsorbed in furnace lining surface, or congeal into small droplet and be adhered to furnace lining surface, it can bond
Coke powder, miberal powder, and can be reacted with CO2, H2O in coal gas and generate ZnO.And zinc oxide can also be with SiO2, Al2O3 in bricking and furnace charge
Reaction generates that fusing point is higher and the willemite (ZnOAl2O3) and zinc point conduct (ZnOAl2O3) of infusibility.These infusibility substances
Easily encounter that former, fuel powder is more in furnace lining Surface Creation attachment, furnace temperature frequent fluctuation, attachment mutually glues layer by layer, product knot length
Greatly, develop into accretion, gently then destroy direct motion, it is heavy then damping down is needed to fry tumor.
3) deposition of furnace lining inside zinc.
Zinc deposits in refractory brick furnace lining causes volume expansion, generates internal stress, causes material damage.
4) other harm.
Zinc deposits in cupola well carbon brick, is also easy to produce " rat hole " shape etch, even results in hearth breakout accident.Zinc and furnace shell steel
Plate reaction generates zinc-iron alloy, and strength reduction is also easy to produce crack, and is not easy soldering.Zinc deposits in gas piping, will cause coal
Gas access stenosis, stove are suppressed, and pipeline etc. can be notably blocked.
Harm in summary is difficult to return the higher dust of the constituent contents such as zinc, lead, potassium, sodium in integrated iron and steel works
It receives and uses, quite a few dust can only carry out the processing such as filling, and not only waste resource, but also polluted environment；Some
Enterprise implements to take out to the high dust containing harmful elements such as zinc, lead, has not only sold resource (ferro element) cheap, but also be that displaced dirt
Dye.
Utility model content
The utility model proposes a kind of devices that zinc-iron-containing dust mud resource utilizes, and solve harmful element in smelting process
The problem of, the comprehensive solution for smelting dirt mud is provided.
In order to achieve the above object, the utility model proposes a kind of devices that zinc-iron-containing dust mud resource utilizes, comprising:
Pre-reducing furnace, using annular pre-reducing furnace form, including proportioner, mixing arrangement, press ball device, dry dress
It sets, annular pre-reducing furnace device and discharge device；
Whole reducing and smelting furnace is connected to the pre-reducing furnace, by the pre-reducing furnace reduction after prereduction material into
Enter whole reducing and smelting furnace, the end reducing and smelting furnace uses vertical hot air blast furnace, including feed proportioning system, feeding device, tapping
Deslagging device；
Smoke processing system, is connected to the pre-reducing furnace and whole reducing and smelting furnace, and the smoke processing system includes heavy
Room, waste heat boiler, heat exchanger, deduster, blower and chimney drop.
Further, the press ball device includes pressure ball surge bunker, belt constant feeder, ball press, and screening machine has been pressed
Green-ball send the roll screen to screening machine to be sieved, qualified green-ball is delivered to green-ball drying device and is dried.
Further, the qualified green-ball is the bead that partial size is more than or equal to 8mm, and unqualified bead is sent back to by sealing-tape machine
Returning charge storehouse.
Further, the drying device uses drying grate and mesh belt dryer, and the qualified green-ball after green-ball screening enters
Mesh-belt type drier is dried.
Further, the annular pre-reducing furnace device includes:
Feeding device, for green-ball to be equably layered on to the stone or metal plate for standing a stove on as a precaution against fire of annular pre-reducing furnace；
Combustion system provides heat for annular pre-reducing furnace reduction；
Pelletizing in annular pre-reducing furnace is gradually transported to end of coming out of the stove by rotation by entering furnace end, passes through row by furnace bottom machine
The ripe ball of high temperature after material device comes out of the stove annular pre-reducing furnace is discharged out of furnace.
Further, the pre-reduction temperature in the pre-reducing furnace is 1050 DEG C~1300 DEG C, by part metals in dirt mud
Oxide is reduced to metal, and the element of low melting point enters flue gas, the enriching and recovering in the smoke processing system.
Further, 1000~1200 DEG C of high-temperature flue gas are discharged in the annular pre-reducing furnace, sequentially enter expansion chamber, remaining
Heat boiler and heat exchanger cool down, and collect into deduster to flue dust zinc-containing dust, the flue gas after dedusting is last
It is extracted out by smoke exhaust fan.
Further, the whole reducing and smelting furnace melting uses hot wind, and hot wind utilizes smoke processing system by heat exchanger
Waste heat generate, blasted in furnace by tuyere device.
Further, the reduction melting temperature of the whole reducing and smelting furnace is 1500~2000 DEG C, and prereduction material is restored
It is smelted into molten iron and slag, part harmful element enters in the smoke processing system after being reduced to be collected.
Further, the pre-reducing furnace and whole reducing and smelting furnace share a set of smoke processing system, or single according to arrangement
Smoke processing system independent of each other is solely set.
The utility model proposes the device and method that utilizes of zinc-iron-containing dust mud resource, iron content Zinc-Bearing Wastes etc. are useless
Gurry matches adding additives and coke powder compacting balling-up after pretreatment, and annular pre-reducing furnace is entered after drying and carries out prereduction, reduction
Prereduction material carry out briquetting or being directly entered whole reducing and smelting furnace, reduction melting is at molten iron and clinker, annular pre-reducing furnace cigarette
It collects after gas is recycled by waste heat and through deduster to obtain oxygen enrichment zinc product.The utility model can be by iron content salvage property containing zinc
Sourceization utilizes, directly production molten iron and oxygen enrichment zinc powder dirt, solves the problems, such as harmful element in smelting process, provides smelting
The comprehensive solution of dirt mud.
Detailed description of the invention
The apparatus structure signal that the zinc-iron-containing dust mud resource that Fig. 1 show the utility model preferred embodiment utilizes
Figure.
Fig. 2 show the method flow diagram that the zinc-iron-containing dust mud resource of the utility model preferred embodiment utilizes.
Specific embodiment
Specific embodiment of the present utility model, but the utility model implementation not limited to the following are provided below in conjunction with attached drawing
Mode.According to following explanation and claims, will be become apparent from feature the advantages of the utility model.It should be noted that attached drawing
It is all made of very simplified form and uses non-accurate ratio, be only used for convenience, lucidly aid in illustrating the utility model
The purpose of embodiment.
Referring to FIG. 1, Fig. 1 show the device that the zinc-iron-containing dust mud resource of the utility model preferred embodiment utilizes
Structural schematic diagram.The utility model proposes a kind of devices that zinc-iron-containing dust mud resource utilizes, comprising: pre-reducing furnace 100 is adopted
With annular pre-reducing furnace form, including proportioner 110, mixing arrangement 120, press ball device 130, drying device 140, annular is in advance
Assembly of reduction furnace and discharge device；Whole reducing and smelting furnace 200 is connected to the pre-reducing furnace 100, by the pre-reducing furnace
Prereduction material after 100 reduction enters whole reducing and smelting furnace 200, and the end reducing and smelting furnace uses vertical hot air blast furnace,
Including feed proportioning system 210, feeding device 220, tapping device 230；Smoke processing system 300 is connected to the prereduction
Furnace 100 and whole reducing and smelting furnace 200, the smoke processing system 300 include expansion chamber 310, waste heat boiler 320, heat exchanger
330, deduster 340, blower 350 and chimney.
According to the utility model preferred embodiment, the press ball device 130 includes pressure ball surge bunker, belt dosing
Machine, ball press, screening machine, the green-ball pressed send the roll screen to screening machine to be sieved, and qualified green-ball is delivered to the dry dress of green-ball
It sets and is dried.Further, the qualified green-ball is the bead that partial size is more than or equal to 8mm, and unqualified bead passes through sealing-tape machine
Send returning charge storehouse back to.
The drying device 140 uses drying grate and mesh belt dryer, and the qualified green-ball after green-ball screening enters net belt type
Dryer is dried.
The annular pre-reducing furnace device includes: feeding device, for green-ball to be equably layered on to annular pre-reducing furnace
On stone or metal plate for standing a stove on as a precaution against fire；Combustion system provides heat for annular pre-reducing furnace reduction；Furnace bottom machine, by pelletizing in annular pre-reducing furnace by entering
Furnace end is gradually transported to end of coming out of the stove by rotation, and the ripe ball of the high temperature after annular pre-reducing furnace is come out of the stove by discharge device is out of furnace
Discharge.
Dirt mud, which enters, first carries out ingredient before pre-reducing furnace, be incorporated a certain proportion of reducing agent and binder, agglomeration after mixing,
Enter pre-reducing furnace after drying.Pre-reduction temperature in the pre-reducing furnace is 1000 DEG C or more, preferable in the utility model
It is 1050 DEG C~1300 DEG C in embodiment, part of the metal oxide in dirt mud is reduced to metal, the element of low melting point (such as zinc
Equal elements) enter flue gas, the enriching and recovering in the smoke processing system.
1000~1200 DEG C of high-temperature flue gas are discharged in the annular pre-reducing furnace, sequentially enter expansion chamber 310, waste heat boiler
320 and heat exchanger 330 cool down, flue dust zinc-containing dust is collected into deduster 340, the flue gas after dedusting is most
It is extracted out afterwards by smoke exhaust fan 350.
End 200 melting of reducing and smelting furnace uses hot wind, and hot wind utilizes the remaining of smoke processing system by heat exchanger 330
Heat generates, and is blasted in furnace by tuyere device.
End reducing furnace is added through charging system 220 in prereduction material after pre-reducing furnace 100 restores, and end reducing furnace 200 passes through
A certain proportion of coke and lime stone is added in feed proportioning system 210, according to molten iron demand, with addition of the steel scrap of different proportion, after addition
Furnace charge heated, melted in furnace, reduction process.It is described end reducing and smelting furnace 200 reduction melting temperature be 1500~
2000 DEG C, by the reduction melting of prereduction material at molten iron and slag, the harmful elements such as part zinc enter at the flue gas after being reduced
It is collected in reason system 300.
Smoke processing system 300 efficiently uses the heat of flue gas, output steam, and pre-reducing furnace 100 and end are restored
The preheating of air blast used in smelting furnace 200 reduces energy consumption, and flue gas enters deduster 340 after UTILIZATION OF VESIDUAL HEAT IN and is dusted, rich
Zinc powder dirt is collected in deduster and waste heat utilization equipment, and the utilization of resources is used as after enrichment.The pre-reducing furnace 100 and end
Reducing and smelting furnace 200 shares a set of smoke processing system 300, or smoke processing system independent of each other is separately provided according to arrangement
300。
Referring to FIG. 2, Fig. 2 show the method that the zinc-iron-containing dust mud resource of the utility model preferred embodiment utilizes
Flow chart.The utility model also proposes a kind of method that zinc-iron-containing dust mud resource utilizes, including the following steps:
Step S100: it is pre- that zinc-iron-containing dust mud is entered to annular pre-reducing furnace after ingredient, mixing, pressure ball, drying process
Reduction, iron are reduced into prereduction material for whole reducing and smelting furnace, and zinc is reduced into steam；
Step S200: prereduction material enters whole reducing and smelting furnace, is incorporated coke, blasts hot wind, melting is reduced in furnace
For molten iron and clinker, whole reducing and smelting furnace generates coal gas in smelting furnace top combustion into high-temperature flue gas；
Step S300: flue gas caused by pre-reducing furnace and whole reducing and smelting furnace is collected by smoke processing system to be recycled.
Various dust, coke powder and binder are delivered to proportioner by closed tank car, and proportioner includes that dust receives
Device, feed bin, charging gear and burden balance, are sent to mixing arrangement by conveying facility after preparing in proportion and are mixed.Mixing
Using intensive mixer, during continuous, adverse current relative motion high-intensitive kneading, material can be in a short period of time
It is uniformly mixed consistent.It can reach required mixability usually in 60~120s, so that material is sufficiently mixed and is refined, effectively
The additive amount of binder is reduced, increases the intensity of pressure ball agglomerate, improves the balling ratio of agglomerate.
Material after mixing enters press ball device pressure ball, and press ball device includes pressure ball surge bunker, belt constant feeder, pressure
Ball machine, screening machine, mixed raw material enter ball press by gravity in hopper, viscous in gravity, shearing force, compressing force and binder
Under the comprehensive function of resultant force, it is pressed balling-up.The green-ball pressed, which is sent to roll screen, to be sieved, and partial size is unqualified small less than 8mm's
Ball sends returning charge storehouse back to by sealing-tape machine, and qualified green-ball is delivered to green-ball drying machine and is dried.
Dry that drying grate and two kinds of mesh belt dryer can be used, the qualified green-ball after green-ball screening enters mesh-belt type drier
Dried, it is dry after green-ball moisture will by 6% be reduced to 1% hereinafter, drying heat source can be generated using hot-blast stove or using from
The fume afterheat of body flue gas system.Green-ball after drying enters pre-reducing furnace and carries out prereduction.
Pre-reducing furnace is using annular pre-reducing furnace, including feeding device, for green-ball to be equably layered on to annular prereduction
On the stone or metal plate for standing a stove on as a precaution against fire of furnace；Combustion system provides heat for annular pre-reducing furnace reduction；Furnace bottom machine, by pelletizing in annular pre-reducing furnace
End of coming out of the stove gradually is transported to by rotation by entering furnace end, discharging device, the ripe ball of high temperature after annular pre-reducing furnace is come out of the stove is from furnace
Interior discharge, 1050 DEG C~1300 DEG C of annular pre-reducing furnace treatment temperature.Part of the metal oxide in dirt mud is reduced to metal, it is low
The element of fusing point enters flue gas, the enriching and recovering in the smoke processing system.
About 1000~1200 DEG C of high-temperature flue gas are discharged in annular pre-reducing furnace, sequentially enter expansion chamber and waste heat boiler, temperature
Degree drops to about 200 DEG C, collects into high temperature bag filter to flue dust zinc-containing dust, the flue gas after dedusting finally leads to
Cross smoke exhaust fan extraction.
It is molten that vertical furnace type reduction is added by feeding device after hot charging or cooling in the prereduction material of annular pre-reducing furnace discharge
Furnace, whole reduction melting coke for furnace and flux are added after feed proportioning system ingredient by feeding device, and are matched according to molten iron demand
Add part steel scrap, material is added portionwise using material basket for feeding device.
Whole reducing and smelting furnace melting uses hot wind, and hot wind is generated by heat exchanger using flue gas system waste heat, passes through air port
Device blasts in furnace, and prereduction material is reduced in furnace, melting, and 1500 DEG C~2000 DEG C of reduction melting temperature, by prereduction material
It is reduced to molten iron and slag.
The coal gas that the reduction melting generates burns into high-temperature flue gas in Furnace top combustion room and gasification cooling flue, passes through
It is tiny structure that pressure, which controls entire furnace top pressure, prevents coal gas from removing, 1000~1200 DEG C of the flue-gas temperature after burning, into cigarette
Gas processing system.
The pre-reducing furnace and whole reducing and smelting furnace fume treatment share a set of smoke processing system, or independent according to arrangement
Smoke processing system independent of each other is set.
1000~1200 DEG C of flue gas processing device entrance flue gas temperature, UTILIZATION OF VESIDUAL HEAT IN is carried out through waste heat boiler and heat exchanger,
By reasonable Arrangement heat exchanger and the evaporator and heat exchanger of boiler, by Hot-blast Heating needed for pre-reducing furnace and whole reducing and smelting furnace
To required temperature, the flue gas after heat exchange enters deduster for dust collection, the powder collected in expansion chamber, waste heat boiler and deduster
Dirt is oxygen enrichment zinc powder dirt, and following resource utilization is carried out after collection.
In conclusion the utility model proposes the device and method that utilizes of zinc-iron-containing dust mud resource, iron content is contained
The wastes such as zinc fume mud match adding additives and coke powder compacting balling-up after pretreatment, and annular pre-reducing furnace is entered after drying and is carried out in advance
The prereduction material of reduction, reduction carries out briquetting or is directly entered whole reducing and smelting furnace, and at molten iron and clinker, annular is pre- for reduction melting
It collects after reduction kiln gas is recycled by waste heat and through deduster to obtain oxygen enrichment zinc product.Iron content can be contained zinc by the utility model
Utilization of waste as resource, directly production molten iron and oxygen enrichment zinc powder dirt, solve the problems, such as harmful element in smelting process, mention
The comprehensive solution of smelting dirt mud is supplied.
Although the utility model has been disclosed with preferred embodiment as above, so it is not intended to limit the utility model.This reality
It is without departing from the spirit and scope of the utility model, each when that can make with novel those of ordinary skill in the art
Kind changes and retouches.Therefore, the protection scope of the utility model is subject to view those as defined in claim.
Claims (10)
1. a kind of device that zinc-iron-containing dust mud resource utilizes characterized by comprising
Pre-reducing furnace, using annular pre-reducing furnace form, including proportioner, mixing arrangement, press ball device, drying device, ring
Shape pre-reducing furnace device and discharge device；
Whole reducing and smelting furnace is connected to the pre-reducing furnace, and the prereduction material after pre-reducing furnace reduction enters eventually also
Former smelting furnace, the end reducing and smelting furnace use vertical hot air blast furnace, including feed proportioning system, feeding device, and tapping is slagged tap dress
It sets；
Smoke processing system, is connected to the pre-reducing furnace and whole reducing and smelting furnace, the smoke processing system include expansion chamber,
Waste heat boiler, heat exchanger, deduster, blower and chimney.
2. the device that zinc-iron-containing dust mud resource according to claim 1 utilizes, which is characterized in that the press ball device
Including pressure ball surge bunker, belt constant feeder, ball press, screening machine, the green-ball pressed send the roll screen to screening machine to be sieved
Point, qualified green-ball is delivered to green-ball drying device and is dried.
3. the device that zinc-iron-containing dust mud resource according to claim 2 utilizes, which is characterized in that the qualification green-ball
It is more than or equal to the bead of 8mm for partial size, unqualified bead sends returning charge storehouse back to by sealing-tape machine.
4. the device that zinc-iron-containing dust mud resource according to claim 1 utilizes, which is characterized in that the drying device
Using drying grate and mesh belt dryer, the qualified green-ball after green-ball screening, which enters mesh-belt type drier, is dried.
5. the device that zinc-iron-containing dust mud resource according to claim 1 utilizes, which is characterized in that the annular is pre- also
Former furnace apparatus includes:
Feeding device, for green-ball to be equably layered on to the stone or metal plate for standing a stove on as a precaution against fire of annular pre-reducing furnace；
Combustion system provides heat for annular pre-reducing furnace reduction；
Pelletizing in annular pre-reducing furnace is gradually transported to end of coming out of the stove by rotation by entering furnace end, is filled by discharge by furnace bottom machine
The ripe ball of the high temperature after annular pre-reducing furnace is come out of the stove is set to be discharged out of furnace.
6. the device that zinc-iron-containing dust mud resource according to claim 1 utilizes, which is characterized in that the pre-reducing furnace
In pre-reduction temperature be 1050 DEG C~1300 DEG C, part of the metal oxide in dirt mud is reduced to metal, the element of low melting point
Into flue gas, the enriching and recovering in the smoke processing system.
7. the device that zinc-iron-containing dust mud resource according to claim 6 utilizes, which is characterized in that the annular is pre- also
Former fire grate goes out 1000~1200 DEG C of high-temperature flue gas, sequentially enters expansion chamber, waste heat boiler and heat exchanger and cools down, into removing
Dirt device collects flue dust zinc-containing dust, and the flue gas after dedusting is extracted out finally by smoke exhaust fan.
8. the device that zinc-iron-containing dust mud resource according to claim 1 utilizes, which is characterized in that the reduction eventually is molten
Furnace melting uses hot wind, and hot wind is generated by heat exchanger using the waste heat of smoke processing system, blasts furnace by tuyere device
It is interior.
9. the device that zinc-iron-containing dust mud resource according to claim 1 utilizes, which is characterized in that the reduction eventually is molten
The reduction melting temperature of furnace is 1500~2000 DEG C, by the reduction melting of prereduction material at molten iron and slag, part harmful element
Enter in the smoke processing system after being reduced and collects.
10. the device that zinc-iron-containing dust mud resource according to claim 1 utilizes, which is characterized in that the prereduction
Furnace and whole reducing and smelting furnace share a set of smoke processing system, or fume treatment system independent of each other is separately provided according to arrangement
System.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821303264.4U CN208733192U (en) | 2018-08-14 | 2018-08-14 | A kind of device that zinc-iron-containing dust mud resource utilizes |
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|---|---|---|---|
| CN201821303264.4U CN208733192U (en) | 2018-08-14 | 2018-08-14 | A kind of device that zinc-iron-containing dust mud resource utilizes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108796217A (en) * | 2018-08-14 | 2018-11-13 | 宝钢工程技术集团有限公司 | A kind of device and method that zinc-iron-containing dust mud resource utilizes |
-
2018
- 2018-08-14 CN CN201821303264.4U patent/CN208733192U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108796217A (en) * | 2018-08-14 | 2018-11-13 | 宝钢工程技术集团有限公司 | A kind of device and method that zinc-iron-containing dust mud resource utilizes |
| CN108796217B (en) * | 2018-08-14 | 2024-04-19 | 宝钢工程技术集团有限公司 | Device and method for recycling zinc-containing and iron-containing dust mud |
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