CN105749686A - Steelmaking slag treatment dust removing system of AOD furnace - Google Patents
Steelmaking slag treatment dust removing system of AOD furnace Download PDFInfo
- Publication number
- CN105749686A CN105749686A CN201610272877.5A CN201610272877A CN105749686A CN 105749686 A CN105749686 A CN 105749686A CN 201610272877 A CN201610272877 A CN 201610272877A CN 105749686 A CN105749686 A CN 105749686A
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- CN
- China
- Prior art keywords
- dust
- hopper
- aod furnace
- discharge port
- dust removing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/40—Combinations of devices covered by groups B01D45/00 and B01D47/00
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/072—Treatment with gases
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a steelmaking slag treatment dust removing system of an AOD furnace.The steelmaking slag treatment dust removing system comprises a hopper dust suction hood and a discharging port dust suction hood, and is characterized in that the hopper dust suction hood is arranged on a slag feeding hopper and connected with a hopper dust removing pipeline, the discharging port dust suction hood is arranged at a slag discharging port and connected with a discharging port dust removing pipeline, the discharging port dust removing pipeline is communicated with the hopper dust removing pipeline, the hopper dust removing pipeline is connected with a concentration main pipeline, and the concentration main pipeline is communicated with an air inlet of a cyclone dust remover.An air outlet of the cyclone dust remover is communicated with a draught fan.An air outlet of the draught fan is provided with a water membrane dust remover.The steelmaking slag treatment dust removing system of the AOD furnace is compact in designed structure, capable of saving ground, and high in stability, reliability and dust removing efficiency due to the fact that the unique smoke dust purifying system is arranged oriented to slag features of the AOD furnace.
Description
Technical field
The present invention relates to a kind of dust pelletizing system, especially a kind of AOD furnace slag produced from steel-smelting processes dust pelletizing system.
Background technology
AOD furnace is the refining equipment of argon oxygen decarburizing process.Slag refers in particular to the slag discharged in steelmaking process, impurity that oxide, the furnace lining material being etched and fettling material, the metal charge generated after to be primarily referred to as in converting process in metal charge each element oxidized is brought into and the slag making materials being intentionally added for adjusting slag character.The general quantity of slag is the 8%-15% of output of steel.This part ferrum is also sizable resource, and therefore producer processes typically via sorting, screening, magnetic separation etc., recovery section steel scrap or the higher ferromagnetic substance of iron-holder, slag carries out renewable resources, it is possible to return sintering, blast furnace and steel-making etc., it is possible to make cement.A large amount of dust, contaminated environment can be produced when broken, screening, magnetic separation.In order to protect environment, improve workman's working condition, it is necessary to dust is administered, make the flue gas mass after purification meet the discharge standard of national regulation.For dust disposal, modern crafts generally trend towards bag-type dust, because its efficiency of dust collection is high, if but containing a large amount of steam in dust, easily make cloth bag harden with bag-type dust and the efficiency of dust collection that is substantially reduced and cloth bag service life.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of AOD furnace slag produced from steel-smelting processes dust pelletizing system, this Design of Dust-removing System compact conformation, save space, for AOD furnace Steel Slag Characteristics, being configured with the clarifying smoke system of uniqueness, stability is high, reliability is good, and efficiency of dust collection is high.
According to technical scheme provided by the invention, described AOD furnace slag produced from steel-smelting processes dust pelletizing system, including hopper dust shield and discharge port dust shield, it is characterized in that: described hopper dust shield is arranged on slag loading hopper place, hopper dust shield connects hopper cleaning shaft, discharge port dust shield is arranged on slag discharge port place, discharge port dust shield connects discharge port cleaning shaft, discharge port cleaning shaft is connected with hopper cleaning shaft, hopper cleaning shaft connects concentrates main pipeline, concentrates main pipeline to be connected with the air inlet of cyclone dust extractor；The air outlet of described cyclone dust extractor is connected with blower fan；The air outlet of described blower fan arranges water dust scrubber.
Described cyclone dust extractor includes Whirlwind barrel, and Whirlwind barrel top arranges spiral case, and spiral case is provided with air inlet and air outlet, and air inlet is connected with main pipeline, and air outlet is connected with blower fan；The bottom of described Whirlwind barrel is provided with flue-dust retainer.
The diameter of described Whirlwind barrel is from top to bottom gradually reduced.
The inside of described Whirlwind barrel arranges an obconic radiation shield.
The lower end outlet of described flue-dust retainer is provided with push-pull valve.
Described flue-dust retainer be connected with set burying scraper.
AOD furnace slag produced from steel-smelting of the present invention processes dust pelletizing system and selects cyclone dust extractor, sack cleaner of comparing, and has resistance little, processes air quantity big, stable performance, and floor space reduces, simple in construction, controls simple, the features such as later maintenance is simple, practical cheap；It is aided with water dust scrubber again, collects fine solid particle, enter in Sedimentation tank, it does not have reentrainment of dust, reduce atmospheric pollution；The dust of different-diameter each collected by cyclone dust extractor and water dust scrubber, and the classification being beneficial to slag is recycled.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
Below in conjunction with concrete accompanying drawing, the invention will be further described.
As shown in Figure 1: described AOD furnace slag produced from steel-smelting processes dust pelletizing system and includes water dust scrubber 1, discharge port dust shield 2, discharge port cleaning shaft 3, hopper dust shield 4, hopper cleaning shaft 5, concentrates main pipeline 6, cyclone dust extractor 7, Whirlwind barrel 7-1, spiral case 7-2, flue-dust retainer 7-3, push-pull valve 8, set burying scraper 9, blower fan 10, slag loading hopper 11, slag discharge port 12 etc..
As shown in Figure 1, the present invention includes hopper dust shield 4 and discharge port dust shield 2, described hopper dust shield 4 is arranged on slag loading hopper 11 place, hopper dust shield 4 connects hopper cleaning shaft 5, discharge port dust shield 2 is arranged on slag discharge port 12 place, and discharge port dust shield 2 connects discharge port cleaning shaft 3, and discharge port cleaning shaft 3 is connected with hopper cleaning shaft 5, hopper cleaning shaft 5 connects concentrates main pipeline 6, concentrates main pipeline 6 to be connected with the entrance of cyclone dust extractor 7；Described cyclone dust extractor 7 includes Whirlwind barrel 7-1, Whirlwind barrel 7-1 top and arranges spiral case 7-2, spiral case 7-2 and be provided with air inlet and air outlet, and air inlet is connected with main pipeline 6, and air outlet is connected with blower fan 10；The bottom of described Whirlwind barrel 7-1 is provided with flue-dust retainer 7-3, the diameter of Whirlwind barrel 7-1 is from top to bottom gradually reduced, the inside of Whirlwind barrel 7-1 arranges an obconic radiation shield (not shown), decrease dusty gas from middle part to the short-circuit probability exported, prevent from secondary gas flow from again being rolled by the dust separated and being raised gas to take out of, improve efficiency of dust collection；The lower end outlet of described flue-dust retainer 7-3 is provided with push-pull valve 8, convenient maintenance；It is connected with set burying scraper 9 at described flue-dust retainer 7-3, adopts set burying scraper 9 by ash collective conveyance, reduce and unload ash point, minimizing reentrainment of dust；The air outlet of described blower fan 10 arranges water dust scrubber 1.
The operation principle of the present invention and work process: as shown in Figure 1, AOD furnace produces slag in refining process, after AOD furnace is slagged tap, with slag pan through flatcar be transported to slag across, with hook type overhead traveling crane, slag pan is sling, it is placed on and turns on slag frame, sling by overhead traveling crane again the side hanger of slag pan, slag is ploughed under vibrosieve, then pours slag loading hopper into, it is delivered to slag discharge port through belt, a large amount of dust can be produced in turning over slag process.For meeting environmental requirement, slag processing process produces the not outer row of substantial amounts of steam, by cooling cylinder by water vapor condensation Cheng Shui, returns to Sedimentation tank.Simultaneously, it is necessary to the airborne dust produced when the slag come slag pan and slag overturning suppresses, and takes concentrated dust-removing method.Concentrated dust-removing method is to concentrate the dust trapped by discharge port dust shield 2 and hopper dust shield 4; it is transported to concentration main pipeline 6 by discharge port cleaning shaft 3 and hopper cleaning shaft 5; then the centrifugal blower utilizing cyclone dust extractor 7 forms negative pressuren zone at flour dust overflow place; dusty gas is sucked in cyclone dust extractor 7; air-flow is when rotating, and the dust granules in air-flow can be separated from air-flow because of the effect by centrifugal force.
Owing to the efficiency of dust collection of cyclone dust extractor 7 only has 50%-90%, the gas after process can not meet the requirement of environmental protection, so setting a water dust scrubber 1 again at blower fan 10 air outlet.Water dust scrubber 1 is the wet dust separater utilizing centrifugal force to complete dust removal process, and after dusty gas entrance cleaner unit, after gas-liquid effect, the grit in gas shifts to liquid, makes gas be purified.Water dust scrubber 1 is the wet scrubber that application is maximum, and simple with other wet scrubber structure compared, stable, resistance is relatively low, and efficiency is higher.
Claims (6)
1. an AOD furnace slag produced from steel-smelting processes dust pelletizing system, including hopper dust shield (4) and discharge port dust shield (2), it is characterized in that: described hopper dust shield (4) is arranged on slag loading hopper (11) place, hopper dust shield (4) connects hopper cleaning shaft (5), discharge port dust shield (2) is arranged on slag discharge port (12) place, discharge port dust shield (2) connects discharge port cleaning shaft (3), discharge port cleaning shaft (3) is connected with hopper cleaning shaft (5), hopper cleaning shaft (5) connects concentrates main pipeline (6), main pipeline (6) is concentrated to be connected with the air inlet of cyclone dust extractor (7)；The air outlet of described cyclone dust extractor (7) is connected with blower fan (10)；The air outlet of described blower fan (10) arranges water dust scrubber (1).
2. AOD furnace slag produced from steel-smelting as claimed in claim 1 processes dust pelletizing system, it is characterized in that: described cyclone dust extractor (7) includes Whirlwind barrel (7-1), Whirlwind barrel (7-1) top arranges spiral case (7-2), spiral case (7-2) is provided with air inlet and air outlet, air inlet is connected with main pipeline (6), and air outlet is connected with blower fan (10)；The bottom of described Whirlwind barrel (7-1) is provided with flue-dust retainer (7-3).
3. AOD furnace slag produced from steel-smelting as claimed in claim 2 processes dust pelletizing system, it is characterized in that: the diameter of described Whirlwind barrel (7-1) is from top to bottom gradually reduced.
4. AOD furnace slag produced from steel-smelting as claimed in claim 2 processes dust pelletizing system, it is characterized in that: the inside of described Whirlwind barrel (7-1) arranges an obconic radiation shield.
5. AOD furnace slag produced from steel-smelting as claimed in claim 2 processes dust pelletizing system, it is characterized in that: the lower end outlet of described flue-dust retainer (7-3) is provided with push-pull valve (8).
6. AOD furnace slag produced from steel-smelting as claimed in claim 2 processes dust pelletizing system, it is characterized in that: be connected with set burying scraper (9) at described flue-dust retainer (7-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610272877.5A CN105749686A (en) | 2016-04-28 | 2016-04-28 | Steelmaking slag treatment dust removing system of AOD furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610272877.5A CN105749686A (en) | 2016-04-28 | 2016-04-28 | Steelmaking slag treatment dust removing system of AOD furnace |
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| Publication Number | Publication Date |
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| CN105749686A true CN105749686A (en) | 2016-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610272877.5A Pending CN105749686A (en) | 2016-04-28 | 2016-04-28 | Steelmaking slag treatment dust removing system of AOD furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107497224A (en) * | 2017-08-29 | 2017-12-22 | 太仓贝斯特机械设备有限公司 | One kind inhales bits equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05320731A (en) * | 1992-02-26 | 1993-12-03 | Sumitomo Metal Ind Ltd | Method for effectively utilizing collected dust of aod furnace |
| CN2936403Y (en) * | 2006-03-29 | 2007-08-22 | 杨应成 | Organic waste gas recovery device |
| CN205019904U (en) * | 2015-09-30 | 2016-02-10 | 沾益县瑞丰铝业有限责任公司 | Aluminium casting shop's dust pelletizing system |
| CN205627475U (en) * | 2016-04-28 | 2016-10-12 | 无锡三达环保科技有限公司 | Dust pelletizing system is handled to AOD stove steelmaking slag |
-
2016
- 2016-04-28 CN CN201610272877.5A patent/CN105749686A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05320731A (en) * | 1992-02-26 | 1993-12-03 | Sumitomo Metal Ind Ltd | Method for effectively utilizing collected dust of aod furnace |
| CN2936403Y (en) * | 2006-03-29 | 2007-08-22 | 杨应成 | Organic waste gas recovery device |
| CN205019904U (en) * | 2015-09-30 | 2016-02-10 | 沾益县瑞丰铝业有限责任公司 | Aluminium casting shop's dust pelletizing system |
| CN205627475U (en) * | 2016-04-28 | 2016-10-12 | 无锡三达环保科技有限公司 | Dust pelletizing system is handled to AOD stove steelmaking slag |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107497224A (en) * | 2017-08-29 | 2017-12-22 | 太仓贝斯特机械设备有限公司 | One kind inhales bits equipment |
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Application publication date: 20160713 |