CN101972702A - Comprehensive dust recycling technology and system for sintering machine head electric precipitation - Google Patents
Comprehensive dust recycling technology and system for sintering machine head electric precipitation Download PDFInfo
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- CN101972702A CN101972702A CN2010102920236A CN201010292023A CN101972702A CN 101972702 A CN101972702 A CN 101972702A CN 2010102920236 A CN2010102920236 A CN 2010102920236A CN 201010292023 A CN201010292023 A CN 201010292023A CN 101972702 A CN101972702 A CN 101972702A
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Abstract
The invention discloses comprehensive dust recycling technology and a comprehensive dust recycling system for sintering machine head electric precipitation. In the technology, dust in a sintering machine head electric precipitator is respectively conveyed to a main dust groove or an auxiliary dust groove for storage according to the dust condition; the dust in the main dust groove is conveyed to a dust dosing groove in a long distance by a pneumatic transmission device for centralized dosing with environmental dedusted dust together; and the dust in the auxiliary dust groove is humidified by a dust humidifier and transported outwards by an automobile so as to comprehensively recycle the dust. The treatment system comprises the main dust groove, the auxiliary dust groove and a conveying assembly, wherein the conveying assembly is positioned below a dust hopper on the sintering machine head electric precipitator and conveys the dust to the main dust groove or the auxiliary dust groove; the pneumatic transmission device used for conveying the dust to the dust dosing groove is arranged at a discharging end of the main dust groove; and the dust humidifier is arranged at a discharging end of the auxiliary dust groove. The invention has the advantages of simple and compact structure, low cost, simple recycling technology, stable production, increase of yield, reduction of consumption, environmental protection and the like.
Description
Technical field
The present invention is mainly concerned with the dust process field, refers in particular to a kind of method and apparatus of sintering machine head end electric precipitation.
Background technology
Can produce a large amount of iron dust containings in the head electric cleaner production process of iron and steel metallurgy enterprise sintering, account for 0.5%～1.0% of sintering deposit output, these iron dust containings will be polluted environment as not recycling.These iron dust containings have that iron content is higher, the dust granularity is little and the characteristics of water imbibition difference, contain metals such as certain moisture and zinc, potassium, sodium simultaneously at the production initial stage, and are fixed agglomerating easily.
At present, the recovery processing technique of traditional sintering machine head end dedusting ash adopts following several modes:
1, the head dedusting ash is directly delivered to the proportioning room dosage bunker by belt or drag conveyor, but transportation range is long, airborne dust is big and head dedusting ash amount is less, can not form continous batching.
2, the head dedusting ash is delivered into groove by drag conveyor, bucket elevator, by the humidifier humidification, be transported to stock yard secondary utilization in addition with automobile then, but because the automobile transportation is to be interrupted operation, it is little when big during moisture when humidifier adds water, easily produce secondary pollution, and increased treatment process, the cost height.
3, the head dedusting ash is added on the mixed preceding proportioning belt by belt, does not work continuously but unload ash, brought unnecessary fluctuation to batching, and the harmful substance in the dust can not be discarded as required.
4, divide into a cover dust Pneumatic conveyer at the ash bucket of head electric precipitation, a storehouse pump is set under each ash bucket, adopt compressed air that dust is sent into the dust batch bin at a distance, but because the head dust is at the SINTERING PRODUCTION initial stage, dedusting ash contains certain moisture, high humidity, fixed agglomerating easily, cause pneumatic carrier to stop up.Must earlier the wet ash of ash bucket be put the clean strength of could using when starting shooting again after each sintering machine is shut down and overhauled and carry, cause the waste of secondary pollution and human cost.Metals such as the zinc that contains when dedusting ash, potassium, sodium are more simultaneously, are not suitable for can't realizing effluxing dedusting ash when recycling.
This shows,, can't realize comprehensive recycling dust though above-mentioned several conventional process mode all exists some problems still using.
Summary of the invention
The technical problem to be solved in the present invention just is: at the technical problem that prior art exists, the invention provides a kind of simple and compact for structure, with low cost, the recycling operation is simple, can steady production, the comprehensive recovery processing technique of the dust that is used for the sintering machine head end electric precipitation and the system of volume increase consumption reduction and protection environment.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of comprehensive recovery processing technique of dust that is used for the sintering machine head end electric precipitation is characterized in that: the dust in the sintering machine head end electric cleaner is delivered to respectively in main dust groove or the auxilliary dust groove according to the dust situation stores; The dust of described main dust groove is delivered to the dust dosage bunker at a distance by Pneumatic conveyer and concentrates batching with the environmental dust removal dust, and the dust of described auxilliary dust groove by the automobile outward transport, is realized the comprehensive recycling of dust behind dust humidifier humidification.
As a further improvement on the present invention:
When the proportion that accounts for gross mass when the moisture in the dust was less than or equal to 0.5～2%, dust was delivered to main dust groove; The proportion that accounts for gross mass when the moisture in the dust is greater than 0.5～2% the time, and dust is delivered to auxilliary dust groove.
Before the finished product sintering deposit is advancing blast furnace, detect zinc content more than or equal to 0.03% or potassium soda tenor more than or equal to 0.10% the time, dust effluxes after being delivered to auxilliary dust groove.
The present invention further discloses a kind of comprehensive recovery and processing system of dust that is used for the sintering machine head end electric precipitation, it is characterized in that: comprise main dust groove, auxilliary dust groove and be positioned at dedusting ash bucket below on the sintering machine head end electric cleaner and dust be delivered to the conveying assembly of main dust groove or auxilliary dust groove, the discharge end of described main dust groove is provided with and is used for dust is delivered to the Pneumatic conveyer of dust dosage bunker, and the discharge end of described auxilliary dust groove is provided with the dust humidifier.
Described conveying assembly comprises drag conveyor, bucket elevator and is used for controlling to main dust groove or the defeated sub-material controller of expecting of auxilliary dust groove, described drag conveyor is positioned at the below of dedusting ash bucket, the feeding end of described bucket elevator is positioned at the discharge end of drag conveyor, and the discharge end of described bucket elevator is connected with the charging aperture of main dust groove and auxilliary dust groove by conveying pipeline, sub-material controller.
Described sub-material controller is the electricity push-pull valve that surges.
The discharge end of described dust dosage bunker is connected with metering device, the second dust humidifier, proportioning belt and primary mixer in turn.
All be equiped with on described main dust groove and the auxilliary dust groove and dredge blocking component and the anti-inaccessible assembly of vibration.
The discharging opening place of described main dust groove and auxilliary dust groove is equipped with a dust pulverizer.
Compared with prior art; the invention has the advantages that: the present invention is used for the comprehensive recovery processing technique of dust and the system of sintering machine head end electric precipitation; realized that the dust strength is carried and the combination of dust humidification outward transport; its recycling operation is simple; investment and manpower have been saved; cleaning, energy-conservation; not only reached the purpose of steady production, volume increase, consumption reduction and protection environment; also further played the double action of not only recycling the head dedusting ash but also being of value to SINTERING PRODUCTION, remarkable economic efficiency and social benefit have been arranged.
Description of drawings
Fig. 1 is a structural principle schematic diagram of the present invention.
Marginal data:
1, dedusting ash bucket; 2, drag conveyor; 3, bucket elevator; 4, sub-material controller; 5, main dust groove; 6, auxilliary dust groove; 7, dredge blocking component; 8, the anti-inaccessible assembly of vibration; 9, dust pulverizer; 10, star-like unloading valve; 11, dust humidifier; 12, automobile; 13, Pneumatic conveyer; 14, dust receiving system; 15, dust dosage bunker; 16, metering device; 17, the second dust humidifier; 18, proportioning belt; 19, primary mixer; 20, second drag conveyor.
The specific embodiment
Below with reference to Figure of description and specific embodiment the present invention is described in further details.
As shown in Figure 1, the present invention is used for the comprehensive recovery processing technique of dust of sintering machine head end electric precipitation, the dust in the sintering machine head end electric cleaner is delivered in main dust groove 5 or the auxilliary dust groove 6 according to the dust situation store; The dust of main dust groove 5 is delivered to dust dosage bunker 15 at a distance by Pneumatic conveyer 13 and concentrates batching with the environmental dust removal dust, the dust of auxilliary dust groove 6 by automobile 12 outward transports, is realized the comprehensive recycling of dust through star-like unloading valve 10 and after by dust humidifier 11 humidifications.
Because in dust humidification outward transport technology is at the SINTERING PRODUCTION initial stage, dedusting ash contains certain moisture, and the strength delivery ratio is difficulty.Judging when selecting main dust groove 5 or auxilliary dust groove 6 that when the proportion that accounts for gross mass when the moisture in the dust was less than or equal to 0.5～2%, dust was delivered to main dust groove 5; The proportion that accounts for gross mass when the moisture in the dust is greater than 0.5～2% the time, and dust is delivered to secondary dust groove 6.Before the finished product sintering deposit is advancing blast furnace, detect zinc content more than or equal to 0.03% or potassium soda tenor more than or equal to 0.10% the time, be not suitable for recyclingly, dust effluxes after being delivered to auxilliary dust groove 6.
The present invention further provides a kind of comprehensive recovery and processing system of dust that is used for the sintering machine head end electric precipitation, comprise main dust groove 5, auxilliary dust groove 6 and be positioned at dedusting ash bucket 1 below on the sintering machine head end electric cleaner and dust is delivered to the conveying assembly of main dust groove 5 or auxilliary dust groove 6 that the discharge end of main dust groove 5 is provided with and is used for dust is delivered to the Pneumatic conveyer 13 of dust dosage bunker 15.Adopt pneumatic conveying mode that dust directly is sent to dust dosage bunker 15, be for realize to dust carry at a distance, dust focuses on and remote auto control.The discharge end of auxilliary dust groove 6 is provided with dust humidifier 11.
In the present embodiment, conveying assembly comprises drag conveyor 2, bucket elevator 3 and is used for controlling to main dust groove 5 or auxilliary dust groove 6 defeated sub-material controllers 4 of expecting, drag conveyor 2 is positioned at the below of dedusting ash bucket 1, the feeding end of bucket elevator 3 is positioned at the discharge end of drag conveyor 2, and the discharge end of bucket elevator 3 is connected with the charging aperture of main dust groove 5 and auxilliary dust groove 6 by conveying pipeline, sub-material controller 4.Sub-material controller 4 adopts the electricity push-pull valve that surges.In order to make defeated material more reliable and more stable, between sub-material controller 4 and auxilliary dust groove 6, also have additional second drag conveyor 20.
In the present embodiment, the discharge end of dust dosage bunker 15 is connected with metering device 16, the second dust humidifier 17, proportioning belt 18 and primary mixer 19 in turn, is equiped with dust receiving system 14 on the dust dosage bunker 15.The metering device 16 and the second dust humidifier 17 and full factory automatic batching system interlocking quantitatively feed proportioning belt 18 by automatic control with dust, enter primary mixer 19 and mix, and dust is all recycled.Dust concentrate batching effectively resolution system because of putting the system fluctuation that ash amount and the variation of time cause, stablize compound composition and moisture, stablize join carbon, improve bed permeability, raising sintering output and quality.Dust dosage bunker 15 can be provided with different reserves according to the size of dedusting ash amount, dust receiving system 14 is by leaching of pulsed sack cleaner and vacuum release valve pressure release, be combined into one with dust dosage bunker 15, compact conformation is simple, the dedusting exhaust effect is more outstanding, sack cleaner toxic emission concentration≤30mg/Nm
3
The above-mentioned dust humidifier 11 and the second dust humidifier 17 all are equipped with damping device, and dust quantitatively feeds the back by damping device, can realize the automatic interpolation of the water yield.
In the present embodiment, all be equiped with on main dust groove 5 and the auxilliary dust groove 6 and dredge blocking component 7 and the anti-inaccessible assembly 8 of vibration; The obstruction of carrier pipe and will to transport outward dust wetting more abundant when preventing that the dust strength from carrying, do not cause secondary pollution, the discharge gate of main dust groove 5 and auxilliary dust groove 6 is provided with dust pulverizer 9, with the dust fragmentation that part is condensed agglomerating, more helps conveying of dust strength and dust outward transport.For preventing the dust dewfall, main dust groove 5 and auxilliary dust groove 6 are all established steam insulation or electricity insulation simultaneously.
Below only be preferred implementation of the present invention, protection scope of the present invention also not only is confined to the foregoing description, and all technical schemes that belongs under the thinking of the present invention all belong to protection scope of the present invention.Should be pointed out that for those skilled in the art the some improvements and modifications not breaking away under the principle of the invention prerequisite should be considered as protection scope of the present invention.
Claims (9)
1. comprehensive recovery processing technique of dust that is used for the sintering machine head end electric precipitation is characterized in that: the dust in the sintering machine head end electric cleaner is delivered to respectively in main dust groove or the auxilliary dust groove according to the dust situation stores; The dust of described main dust groove is delivered to the dust dosage bunker at a distance by Pneumatic conveyer and concentrates batching with the environmental dust removal dust, and the dust of described auxilliary dust groove by the automobile outward transport, is realized the comprehensive recycling of dust behind dust humidifier humidification.
2. the comprehensive recovery processing technique of dust that is used for the sintering machine head end electric precipitation according to claim 1 is characterized in that: when the proportion that accounts for gross mass when the moisture in the dust was less than or equal to 0.5～2%, dust was delivered to main dust groove; The proportion that accounts for gross mass when the moisture in the dust is greater than 0.5～2% the time, and dust is delivered to auxilliary dust groove.
3. the comprehensive recovery processing technique of dust that is used for the sintering machine head end electric precipitation according to claim 1 and 2, it is characterized in that: before the finished product sintering deposit is advancing blast furnace, detect zinc content more than or equal to 0.03% or potassium soda tenor more than or equal to 0.10% the time, dust effluxes after being delivered to auxilliary dust groove.
4. comprehensive recovery and processing system of dust that is used for the sintering machine head end electric precipitation, it is characterized in that: comprise main dust groove (5), auxilliary dust groove (6) and be positioned at dedusting ash bucket (1) below on the sintering machine head end electric cleaner and dust be delivered to the conveying assembly of main dust groove (5) or auxilliary dust groove (6), the discharge end of described main dust groove (5) is provided with and is used for dust is delivered to the Pneumatic conveyer (13) of dust dosage bunker (15), and the discharge end of described auxilliary dust groove (6) is provided with dust humidifier (11).
5. the comprehensive recovery and processing system of dust that is used for the sintering machine head end electric precipitation according to claim 4, it is characterized in that: described conveying assembly comprises drag conveyor (2), bucket elevator (3) and be used for the sub-material controller (4) of control to the defeated material of main dust groove (5) or auxilliary dust groove (6), described drag conveyor (2) is positioned at the below of dedusting ash bucket (1), the feeding end of described bucket elevator (3) is positioned at the discharge end of drag conveyor (2), and the discharge end of described bucket elevator (3) passes through conveying pipeline, sub-material controller (4) is connected with the charging aperture of main dust groove (5) and auxilliary dust groove (6).
6. the comprehensive recovery and processing system of dust that is used for the sintering machine head end electric precipitation according to claim 5 is characterized in that: described sub-material controller (4) is the electricity push-pull valve that surges.
7. the comprehensive recovery and processing system of dust that is used for the sintering machine head end electric precipitation according to claim 4 is characterized in that: the discharge end of described dust dosage bunker (15) is connected with metering device (16), the second dust humidifier (17), proportioning belt (18) and primary mixer (19) in turn.
8. the comprehensive recovery and processing system of dust that is used for the sintering machine head end electric precipitation according to claim 4 is characterized in that: all be equiped with the anti-inaccessible assembly (8) of thin blocking component (7) and vibration on described main dust groove (5) and the auxilliary dust groove (6).
9. the comprehensive recovery and processing system of dust that is used for the sintering machine head end electric precipitation according to claim 4 is characterized in that: the discharging opening place of described main dust groove (5) and auxilliary dust groove (6) is equipped with a dust pulverizer (9).
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| CN201010292023.6A CN101972702B (en) | 2010-09-26 | 2010-09-26 | Comprehensive dust recycling technology and system for sintering machine head electric precipitation |
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| CN201010292023.6A CN101972702B (en) | 2010-09-26 | 2010-09-26 | Comprehensive dust recycling technology and system for sintering machine head electric precipitation |
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| CN101972702A true CN101972702A (en) | 2011-02-16 |
| CN101972702B CN101972702B (en) | 2014-06-04 |
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| CN102423727A (en) * | 2011-11-21 | 2012-04-25 | 济南钢铁股份有限公司 | Sintering machine head dust removing and ash conveying device and use method thereof |
| CN103706479A (en) * | 2013-12-26 | 2014-04-09 | 中冶长天国际工程有限责任公司 | Discharging control method and system for nose electrical precipitator for reducing air leakage rate of sintering system |
| CN108588407A (en) * | 2018-06-19 | 2018-09-28 | 德龙钢铁有限公司 | A kind of method and cloth ball device improving permeability of sintering material bed |
| CN112619886A (en) * | 2021-01-22 | 2021-04-09 | 太原钢铁(集团)有限公司 | Dust removal recycling system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102423727A (en) * | 2011-11-21 | 2012-04-25 | 济南钢铁股份有限公司 | Sintering machine head dust removing and ash conveying device and use method thereof |
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| CN103706479A (en) * | 2013-12-26 | 2014-04-09 | 中冶长天国际工程有限责任公司 | Discharging control method and system for nose electrical precipitator for reducing air leakage rate of sintering system |
| CN103706479B (en) * | 2013-12-26 | 2016-02-10 | 中冶长天国际工程有限责任公司 | The head electric cleaner reducing sintering system air leak rate of air curtain unloads grey control method and system |
| CN108588407A (en) * | 2018-06-19 | 2018-09-28 | 德龙钢铁有限公司 | A kind of method and cloth ball device improving permeability of sintering material bed |
| CN108588407B (en) * | 2018-06-19 | 2019-09-24 | 德龙钢铁有限公司 | A kind of method and cloth ball device improving permeability of sintering material bed |
| CN112619886A (en) * | 2021-01-22 | 2021-04-09 | 太原钢铁(集团)有限公司 | Dust removal recycling system |
| CN112619886B (en) * | 2021-01-22 | 2022-05-27 | 太原钢铁(集团)有限公司 | Dust removal recycling system |
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| CN101972702B (en) | 2014-06-04 |
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