CN101972702B - 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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- CN101972702B CN101972702B CN201010292023.6A CN201010292023A CN101972702B CN 101972702 B CN101972702 B CN 101972702B CN 201010292023 A CN201010292023 A CN 201010292023A CN 101972702 B CN101972702 B CN 101972702B
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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 dust process field, refers in particular to a kind of method and apparatus of sintering machine head end electric precipitation.
Background technology
In the head electric cleaner production process of iron and steel metallurgy enterprise sintering, can produce a large amount of iron dust containings, account for 0.5%～1.0% of Sintering Yield, these iron dust containings, will be to environment if do not recycled.These iron dust containings have the advantages that iron content is higher, granularity of dust is little and water imbibition is poor, contain the metals such as certain moisture and zinc, potassium, sodium at the production initial stage simultaneously, easily fixed agglomerating.
At present, the recovery processing technique of traditional sintering machine head end dedusting ash adopts following several modes:
1, head dedusting ash is directly delivered to proportioning room dosage bunker by belt or drag conveyor, but transportation range is long, airborne dust is large and head dedusting ash amount is less, can not form continous batching.
2, head dedusting ash is delivered into groove by drag conveyor, bucket elevator, by humidifier humidification, then with automobile transportation in addition secondary utilization of stock yard, but because Automobile Transportation is to be interrupted operation, little when large when moisture when humidifier adds water, easily produce secondary pollution, and increased treatment process, cost is high.
3, head dedusting ash is added on a proportioning belt before mixed by belt, does not work continuously but unload ash, has brought unnecessary fluctuation to batching, and harmful substance in dust can not be discarded as required.
4, divide into a set of 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 dust batch bin at a distance, but because head dust is at the SINTERING PRODUCTION initial stage, dedusting ash contains certain moisture, high humidity, easily fixed agglomerating, cause pneumatic carrier to stop up.When each sintering machine is started shooting after shutting down and overhauling, must first the wet ash of ash bucket be put to the clean strength that could use again and carry, cause the waste of secondary pollution and human cost.The metals such as the zinc that simultaneously contains when dedusting ash, potassium, sodium are more, while being not suitable for recycling, cannot realize the outer row to dedusting ash.
As can be seen here, although above-mentioned several conventional process mode is still using, all exist some problems, cannot realize the comprehensive recycling to dust.
Summary of the invention
The technical problem to be solved in the present invention is just: the technical problem existing for prior art, the invention provides a kind of simple and compact for structure, with low cost, recycling operation is simple, can steady production, comprehensive dust recovery processing technique and the system for sintering machine head end electric precipitation of volume increase consumption reduction and protection of the environment.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
For a comprehensive dust recovery processing technique for sintering machine head end electric precipitation, it is characterized in that: the dust in sintering machine head end electric cleaner is delivered to respectively in main dust groove or auxiliary dust groove and is stored according to moisture in dust; The dust of described main dust groove is delivered to dust dosage bunker by Pneumatic conveyer remote conveying and concentrate batching together with environmental dust removal dust, and the dust of described auxiliary dust groove is transported outward by automobile after dust-moisturized machine humidification, realizes the comprehensive recycling of dust.
As a further improvement on the present invention:
When the proportion that accounts for gross mass when the moisture in dust is less than or equal to 0.5～2%, dust is delivered to main dust groove; When the proportion that accounts for gross mass when the moisture in dust is greater than 2%, dust is delivered to auxiliary dust groove.
Before finished product sintering deposit is entering blast furnace, detect that zinc content is more than or equal to 0.03% or potassium soda tenor while being more than or equal to 0.10%, dust is delivered to outer row after auxiliary dust groove.
The present invention further discloses a kind of comprehensive dust recovery and processing system for sintering machine head end electric precipitation, it is characterized in that: comprise main dust groove, auxiliary dust groove and be positioned at the below of dedusting ash bucket on sintering machine head end electric cleaner and dust be delivered to the conveying assembly of main dust groove or auxiliary dust groove, the discharge end of described main dust groove is provided with the Pneumatic conveyer for dust being delivered to dust dosage bunker, and the discharge end of described auxiliary dust groove is provided with dust-moisturized machine.
Described conveying assembly comprises drag conveyor, bucket elevator and is used for controlling the sub-material controller to main dust groove or auxiliary dust groove conveying, 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 auxiliary 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-moisturized machine, proportioning belt and primary mixer in turn.
On described main dust groove and auxiliary dust groove, be all equiped with and dredge blocking component and the anti-inaccessible assembly of vibration.
The discharging opening place of described main dust groove and auxiliary dust groove is equipped with a dust pulverizer.
Compared with prior art; the invention has the advantages that: the present invention is for comprehensive dust recovery processing technique and the system of sintering machine head end electric precipitation; realize the combination that dust strength is carried and dust wetting is transported outward; its recycling operation is simple; investment and manpower are saved; clean, energy-conservation; not only reach the object of steady production, volume increase, consumption reduction and protection of the environment; also further play the double action of not only recycling head dedusting ash but also being of value to SINTERING PRODUCTION, had significant economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is 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, auxiliary dust groove; 7, dredge blocking component; 8, vibrate anti-inaccessible assembly; 9, dust pulverizer; 10, star-shaped dust-discharging valve; 11, dust-moisturized machine; 12, automobile; 13, Pneumatic conveyer; 14, dust receiving system; 15, dust dosage bunker; 16, metering device; 17, the second dust-moisturized machine; 18, proportioning belt; 19, primary mixer; 20, the 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, for the comprehensive dust recovery processing technique of sintering machine head end electric precipitation, is delivered to the dust in sintering machine head end electric cleaner in main dust groove 5 or auxiliary dust groove 6 and stores according to dust situation; The dust of main dust groove 5 is delivered to dust dosage bunker 15 by Pneumatic conveyer 13 remote conveyings and concentrate batching together with environmental dust removal dust, the dust of auxiliary dust groove 6 is transported outward by automobile 12 after through star-shaped dust-discharging valve 10 and by dust-moisturized machine 11 humidifications, realizes the comprehensive recycling of dust.
Owing to being at the SINTERING PRODUCTION initial stage in dust wetting outward transport technique, dedusting ash contains certain moisture, and strength is carried more difficult.Judging while selecting main dust groove 5 or auxiliary dust groove 6, when the proportion that accounts for gross mass when the moisture in dust is less than or equal to 0.5～2%, dust is delivered to main dust groove 5; When the proportion that accounts for gross mass when the moisture in dust is greater than 2%, dust is delivered to secondary dust groove 6.Before finished product sintering deposit is entering blast furnace, detect that zinc content is more than or equal to 0.03% or potassium soda tenor while being more than or equal to 0.10%, be not suitable for recycling, dust is delivered to the rear outer row of auxiliary dust groove 6.
The present invention further provides a kind of comprehensive dust recovery and processing system for sintering machine head end electric precipitation, comprise main dust groove 5, auxiliary dust groove 6 and be positioned at dedusting ash bucket 1 below on sintering machine head end electric cleaner and dust be delivered to the conveying assembly of main dust groove 5 or auxiliary dust groove 6, the discharge end of main dust groove 5 is provided with the Pneumatic conveyer 13 for dust being delivered to dust dosage bunker 15.Adopt pneumatic conveying mode that dust is directly 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 auxiliary dust groove 6 is provided with dust-moisturized machine 11.
In the present embodiment, conveying assembly comprises drag conveyor 2, bucket elevator 3 and is used for controlling the sub-material controller 4 to main dust groove 5 or auxiliary dust groove 6 conveyings, 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 auxiliary 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 conveying more reliable and more stable, between sub-material controller 4 and auxiliary dust groove 6, also have additional the 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-moisturized machine 17, proportioning belt 18 and primary mixer 19 in turn, is equiped with dust receiving system 14 on dust dosage bunker 15.Metering device 16 and the second dust-moisturized machine 17 and full factory automatic batching system interlocking, quantitatively feed proportioning belt 18 by automatic control by dust, enters primary mixer 19 and mix, and dust is all recycled.Dust is concentrated the batching system fluctuation that effectively resolution system causes because putting the variation of ash amount and time, stablize compound composition and moisture, stablize join carbon, improve bed permeability, raising sintering output and quality.Dust dosage bunker 15 can arrange different reserves according to the size of dedusting ash amount, dust receiving system 14 is by the leaching of pulsed sack cleaner and vacuum release valve pressure release, be combined into one with dust dosage bunker 15, compact conformation is simple, dedusting exhaust effect is more outstanding, sack cleaner toxic emission concentration≤30mg/Nm
3.
Above-mentioned dust-moisturized machine 11 and the second dust-moisturized machine 17 are all equipped with damping device, after dust quantitatively feeds, by damping device, can realize the automatic interpolation of the water yield.
In the present embodiment, on main dust groove 5 and auxiliary dust groove 6, be all equiped with and dredge blocking component 7 and the anti-inaccessible assembly 8 of vibration; For prevent dust strength carry time carrier pipe obstruction and will transport outward dust soak more abundant, do not cause secondary pollution, the discharge gate of main dust groove 5 and auxiliary dust groove 6 arranges dust pulverizer 9, and the dust fragmentation that part is condensed agglomerating is more conducive to the conveying of dust strength and dust outward transport.For preventing dust dewfall, main dust groove 5 and auxiliary dust groove 6 are all established steam insulation or electricity insulation simultaneously.
Below be only the preferred embodiment of the present invention, protection scope of the present invention is also not only confined to above-described embodiment, and all technical schemes belonging under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, should be considered as protection scope of the present invention.
Claims (7)
1. for a comprehensive dust recovery processing technique for sintering machine head end electric precipitation, it is characterized in that: the dust in sintering machine head end electric cleaner is delivered to respectively in main dust groove or auxiliary dust groove and is stored according to moisture in dust; The dust of described main dust groove is delivered to dust dosage bunker by Pneumatic conveyer remote conveying and concentrate batching together with environmental dust removal dust, and the dust of described auxiliary dust groove is transported outward by automobile after dust-moisturized machine humidification, realizes the comprehensive recycling of dust; When the proportion that accounts for gross mass when the moisture in dust equals 0.5～2%, dust is delivered to main dust groove; When the proportion that accounts for gross mass when the moisture in dust is greater than 2%, dust is delivered to auxiliary dust groove.
2. the comprehensive dust recovery and processing system for sintering machine head end electric precipitation of technique according to claim 1, it is characterized in that: comprise main dust groove (5), auxiliary dust groove (6) and be positioned at the below of dedusting ash bucket (1) on sintering machine head end electric cleaner and dust be delivered to the conveying assembly of main dust groove (5) or auxiliary dust groove (6), the discharge end of described main dust groove (5) is provided with the Pneumatic conveyer (13) for dust being delivered to dust dosage bunker (15), and the discharge end of described auxiliary dust groove (6) is provided with dust-moisturized machine (11).
3. the comprehensive dust recovery and processing system for sintering machine head end electric precipitation according to claim 2, it is characterized in that: described conveying assembly comprises drag conveyor (2), bucket elevator (3) and be used for controlling sub-material controller (4) to main dust groove (5) or auxiliary dust groove (6) conveying, 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), 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 auxiliary dust groove (6).
4. the comprehensive dust recovery and processing system for sintering machine head end electric precipitation according to claim 3, is characterized in that: described sub-material controller (4) is the electricity push-pull valve that surges.
5. the comprehensive dust recovery and processing system for sintering machine head end electric precipitation according to claim 2, is characterized in that: the discharge end of described dust dosage bunker (15) is connected with metering device (16), the second dust-moisturized machine (17), proportioning belt (18) and primary mixer (19) in turn.
6. the comprehensive dust recovery and processing system for sintering machine head end electric precipitation according to claim 2, is characterized in that: on described main dust groove (5) and auxiliary dust groove (6), be all equiped with thin blocking component (7) and the anti-inaccessible assembly of vibration (8).
7. the comprehensive dust recovery and processing system for sintering machine head end electric precipitation according to claim 2, is characterized in that: the discharging opening place of described main dust groove (5) and auxiliary 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 CN101972702A (en) | 2011-02-16 |
| CN101972702B true CN101972702B (en) | 2014-06-04 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102423727B (en) * | 2011-11-21 | 2014-02-05 | 济钢集团有限公司 | Sintering machine head dust removing and ash conveying device and use method thereof |
| 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 |
| 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 |
| 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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| CN1385255A (en) * | 2002-04-15 | 2002-12-18 | 湘潭钢铁集团有限公司 | Iron-containing mud and sintered return mine reuse method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN200981771Y (en) * | 2006-12-07 | 2007-11-28 | 首钢总公司 | Blast furnace gas dust removal self-flowing tank car transportation device |
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| CN1385255A (en) * | 2002-04-15 | 2002-12-18 | 湘潭钢铁集团有限公司 | Iron-containing mud and sintered return mine reuse method |
| EP1700686A2 (en) * | 2005-03-09 | 2006-09-13 | 3D Systems, Inc. | Laser sintering powder recycle system |
| CN101224363A (en) * | 2008-02-02 | 2008-07-23 | 上海宝钢工程技术有限公司 | Dedusting dry powder recycling process |
| CN101458038A (en) * | 2008-12-30 | 2009-06-17 | 山东泰山钢铁集团有限公司 | Stainless steel GOR refining furnace dry cleaning and recovering process |
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