CN101791617B - Method for removing magnesium oxide dust in oriented silicon steel production - Google Patents
Method for removing magnesium oxide dust in oriented silicon steel production Download PDFInfo
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- CN101791617B CN101791617B CN 200910215331 CN200910215331A CN101791617B CN 101791617 B CN101791617 B CN 101791617B CN 200910215331 CN200910215331 CN 200910215331 CN 200910215331 A CN200910215331 A CN 200910215331A CN 101791617 B CN101791617 B CN 101791617B
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Abstract
The invention relates to a method for removing magnesium oxide dust in oriented silicon steel production, which comprises the following steps: introducing high-pressure air from high-pressure blowpipes, observing the working condition through an observation port, adjusting the opening widths and angles of adjustable nozzles of two pairs of blowpipes, spraying the dust to the upper and lower surfaces of a silicon steel belt positioned at the central line of a closed cover in a mode of opposite blow and inclined angle, and striping the magnesium oxide dust collection on the silicon steel belt under the actions of blowing and beating of the airflow; pumping away the dust stripped by the high-pressure airflow and the lifted dust-containing air by using an exhaust port of an exhaust pipe through a middle exhaust cavity of the exhaust pipe; and feeding the pumped dust-containing airflow to a dust removing and purifying facility through a pipe system, separating the magnesium oxide dust collection, and exhausting the clean air into the atmosphere. The method for stripping the magnesium oxide dust collection attached to the surface of a silicon steel plate under the blowing action of high-pressure and high-speed airflow has the advantages of good application effect, good environmentally-friendly performance, high reliability and the like.
Description
Technical field
The present invention relates to magnesia powder dust dedusting field in the orientation silicon steel production, be specifically related to the dust collection method of magnesia powder dust in a kind of orientation silicon steel production.
Background technology
When orientation silicon steel carries out high temperature intermediate annealing at annular furnace, must adopt magnesia as interleaving agent.Stretch during annealing in process follow-up, must remove the magnesia powder dust dedusting again, present suitability for industrialized production all adopts wet type to scrub method.That is: in the silicon steel strip when the brushing and cleaning device, spray alkalescence is scrubbed liquid on strip, the brush roll through being arranged in band steel top and bottom brush effect, the magnesia powder dust dedusting is stripped to scrubs in the liquid liquid, drain through drainpipe.
This wet type is scrubbed method and is mainly had following defective:
1. because magnesia powder dust is a strongly hydrophilic, be very easy to condense into piece or group, together with the bristle that breaks away from blocking pipeline together.
2. facility load is big, scrubs quality for guaranteeing the silicon steel plate surface, and bristle must adopt soft material, easy abrasion, often adjustment brush roll height and replacing brush roll.The artificial completion adopted in adjustment, and adjusting is random big, and labour intensity is high.
3. what is more important: the essence that wet type is scrubbed method is that the pollution to atmosphere with magnesia powder dust is transformed in the water, and the pollution of magnesia powder dust is more hard to manage in water.This is a kind of removal dust method of extremely not environmental protection.
Summary of the invention
Technical problem to be solved by this invention is: the dust collection method that magnesia powder dust in a kind of orientation silicon steel production is provided; This method is to peel off the magnesia powder dust dedusting attached to the silicon steel plate surface through the effect of brushing of high pressure, high velocity air, is a kind of dust collection method of environmental protection.
The present invention solves its technical problem and adopts following technical scheme:
The dust collection method of magnesia powder dust during orientation silicon steel provided by the invention is produced, its step comprises:
Step 1: the pressure-air that provides by compressed air pipe network or high pressure blower imports from the high pressure air blowing pipe; Observe working condition through observation port; Regulate the A/F and the angle of the adjustable nozzle of two pairs of blowers; Mode with to the angle of blowing and tilting is ejected into the silicon strip upper and lower surfaces that is positioned at the enclosed hood centerline, peels off the magnesia powder dust dedusting on the silicon strip through the effect of blowing and hitting of air-flow;
Step 2: dust of being peeled off by high pressure draught and the dust laden air that evokes, taken away through the middle exhausting chamber of this exhaust column by the suction opeing of exhaust column again;
Step 3: the dust-contained airflow of being taken away gets into the udst separation facility through pipe-line system, and the magnesia powder dust dedusting is separated, and cleaned air enters atmosphere.
The present invention compares with the wet type method of scrubbing has following main advantage:
1. the power that the silicon steel plate surface is applied is little, is unlikely to influence the sideslip or the broken belt of steel band.
2. almost do not have consumable part, labour intensity is low, and reliability is high, good economy performance.
3. environmental-protecting performance is good, and peel off the dust process of taking away and filter, after the collection dry dust, can recycle after further handling.Even if dry powder carry out the stock ground pile up after also polluted source not.
4. effect is good.Before adopting this method, the magnesia powder dust of orientation silicon steel steel strip surface is to handle without any early stage, and directly gets into the dust brushing and cleaning device; After adopting the method, the magnesia powder dust average content of silicon steel steel strip surface is by 228mg/m
2Drop to 68mg/m
2(off-line sampled data), magnesia powder dust is removed efficient 50%～70%, and has greatly alleviated the pressure and the pollution level of subsequent handling.
Description of drawings
The structural representation of the device that Fig. 1 is adopted for realization dust collection method of the present invention.
Fig. 2 is the outline drawing of Fig. 1.
Among the figure: 1. high pressure air blowing pipe; 2. adjustable nozzle; 3. middle exhausting chamber; 4. suction opeing; 5. limit, gateway portion exhausting chamber; 6. circular suction opeing; 7. observation port; 8. wear-resisting backing plate; 9. blower; 10. exhausting mouth.
The specific embodiment
The dust collection method of magnesia powder dust during orientation silicon steel provided by the invention is produced is to be used for peeling off the magnesia powder dust dedusting attached to the silicon steel plate surface through brushing of high pressure, high velocity air, and the step of this method comprises:
Step 1: the pressure-air that provides by compressed air pipe network or high pressure blower imports from high pressure air blowing pipe 1; Observe working condition through observation port 7; Regulate two pairs of blowers 9 adjustable nozzle 2 A/F and with the angle of the angle of horizontal direction, to obtain best dust removing effects; Generally speaking, the A/F of adjustable nozzle 2 is 6～10mm, and the angle of adjustable nozzle 2 is to be 45 °～60 °.Adjustable nozzle 2 is ejected into the silicon strip upper and lower surfaces that is positioned at the enclosed hood centerline with the mode to the angle of blowing and tilting, and peels off the magnesia powder dust dedusting on the silicon strip through the effect of blowing and hitting of air-flow.
Step 2: dust of being peeled off by high pressure draught and the dust laden air that evokes, taken away through middle exhausting chamber 3 by oval suction opeing 4 again.
Step 3: whole dust-contained airflows of being taken away get into the udst separation facility through pipe-line system, and the magnesia powder dust dedusting is separated, and cleaned air enters atmosphere.
Udst separation facility according to the invention comprises: deduster (air filtration facility), air exhauster, high-pressure air source (adopting high pressure blower or compressed air), intermediate conduit facility.
For realizing that device that dust collection method of the present invention adopts is a kind of magnesia dedusting air knife-take out dirt device; Be installed on the production line; This device mainly is made up of shell, blowing and exhausting parts; Concrete structure is as depicted in figs. 1 and 2: shell is an enclosed hood, on enclosed hood, establishes observation port 7, is respectively equipped with the rubber curtain door that supplies silicon strip to come in and go out and move at its inlet and outlet; Be equipped with wear-resisting backing plate 8 up and down in enclosed hood inside, can guarantee silicon strip current (seeing direction shown in the arrow among Fig. 1) smoothly.Be provided with two pairs of high speed, high pressure air blowing pipe fittings in the both sides of enclosed hood center line, they are respectively adjustable nozzle 2 and blower 9, and source of the gas can be provided by workshop compressed air or high pressure positive blower.Two pairs of blowers 9 spray high velocity air with the angle of 45～60 degree to the enclosed hood center line through its adjustable nozzle 2, peel off the magnesia powder dust dedusting on the silicon strip.Near the spray site of adjustable nozzle 2 ejection air-flows, be provided with the exhausting mouth 10 that the magnesia powder dust dedusting is taken away, can be the very fast magnesia powder dust dedusting be taken away avoids it to be emitted in the air contaminated environment.Exhausting mouth 10 is taken out the dirt end through what connect that rubber hose is installed in magnesia dedusting system.
Said rubber curtain door, it is contained in the import and the outlet of enclosed hood through rivet and clamping plate.
Said high pressure air blowing pipe 1, it is contained on the channel-section steel bearing on the enclosed hood through the standard pipe collar.
Said adjustable nozzle 2; It is contained on the high pressure air blowing pipe 1 through welding; Adjustable nozzle 2 is regulated bolt-nut-pad by two blocks of clip-on steel plates and M5x25 and is constituted, and regulates the gap of clip-on steel plate, the just gap of nozzle through bolt-nut-pad.
Said suction opeing 4 is oval, and suction opeing 4 welds together with the horn mouth in exhausting chamber 3, below suction opeing 4, through bolt-nut wear-resisting backing plate 8 is installed simultaneously.
Said gateway limit portion exhausting chamber 5, the cross section in exhausting chamber 5 little tubaeform cavity for down big, and to internal extended, it also welds together with enclosed hood with different its horn mouth in middle exhausting chamber 3.
Said wear-resisting backing plate 8 can be processed by electrician's plate (phenolic cloth laminate GB JB/T8149.3-1995).Be installed in suction opeing 4, the downside of suction opeing 6.The protection silicon strip is not abraded.
Said two pairs of blowers 9, they are contained on the channel-section steel bearing on the enclosed hood through the standard pipe collar.When the enclosed hood center line sprayed the high speed and high pressure air-flow, its jet velocity was 50～70m/s at their adjustable nozzle 2, and expulsion pressure is 8～10kPa.
Described exhausting mouth 10 is total exhaust column, and its seal chamber through enclosed hood connects exhausting chamber 3 and exhausting chamber 5.
The air knife that the magnesia powder dust dedusting is used in the orientation silicon steel production that the present invention adopted-take out dirt device; Its course of work is: referring to Fig. 1 and Fig. 2; The pressure-air that is provided by compressed air pipe network or high pressure blower imports from high pressure air blowing pipe 1, so that the mode of blowing is ejected into the silicon strip upper and lower surfaces, the magnesia powder dust dedusting on the silicon strip is stripped from from adjustable nozzle 2; Evoked by air simultaneously, taken away through middle exhausting chamber 3 by oval suction opeing 4 again.Adopting oval suction opeing 4 is in the silicon strip crossing process, to block guide plate.
The part air-flow can force to take part low amounts of dust to escape to import and outlet in addition, and the seizure of this part air-flow is accomplished by circular suction opeing 6 and limit, gateway portion exhausting chamber 5, does not cause secondary pollution in the surrounding air thereby can not be emitted to.
Claims (4)
1. the dust collection method of magnesia powder dust during orientation silicon steel is produced is characterized in that:
Adopt the air knife that the magnesia powder dust dedusting is used in the orientation silicon steel production-take out dirt device; This device is installed on the production line; Mainly be made up of shell, blowing and exhausting parts, wherein: shell is an enclosed hood, and observation port (7) is set on enclosed hood; Inlet and exit at enclosed hood are provided with the rubber curtain door that supplies silicon strip to come in and go out and move; Being equipped with wear-resisting backing plate (8) up and down in enclosed hood inside, is that the both sides of silicon strip operation are provided with two pairs of high speed, high pressure air blowing pipe fittings in the both sides of enclosed hood center line, and they are respectively adjustable nozzle (2) and blower (9); Two pairs of blowers (9) spray high velocity air through its adjustable nozzle (2) to the enclosed hood center line; Peel off the magnesia powder dust dedusting on the silicon strip, near the spray site of adjustable nozzle (2) ejection air-flow, be provided with the exhausting mouth (10) that the magnesia powder dust dedusting is taken away, this exhausting mouth is taken out the dirt end through what connect that rubber hose is installed in magnesia dedusting system;
This method employing may further comprise the steps method and carries out dedusting:
Step 1: the pressure-air that is provided by compressed air pipe network or high pressure blower imports from the high pressure air blowing pipe; Observe working condition through observation port; The A/F of the adjustable nozzle of two pairs of blowers of adjusting and the angle of inclination; Mode with to the angle of blowing and tilting is ejected into the silicon strip upper and lower surfaces that is positioned at the enclosed hood centerline, peels off the magnesia powder dust dedusting on the silicon strip through the effect of blowing and hitting of air-flow; The A/F of adjustable nozzle is 6～10mm, and the angle that adjustable nozzle tilts is 45 °～60 °;
Step 2: dust of being peeled off by high pressure draught and the dust laden air that evokes, taken away through the middle exhausting chamber of this exhaust column by the suction opeing of exhaust column again;
Step 3: the dust-contained airflow of being taken away gets into the udst separation facility through pipe-line system, and the magnesia powder dust dedusting is separated, and cleaned air enters atmosphere.
2. dust collection method according to claim 1 is characterized in that adjustable nozzle (2) when the enclosed hood center line sprays the high speed and high pressure air-flow, and its jet velocity is 50～70m/s, and expulsion pressure is 8～10kPa.
3. dust collection method according to claim 1 is characterized in that suction opeing (4) is oval suction opeing.
4. dust collection method according to claim 1 is characterized in that being provided with enclosed hood in the outside of exhaust column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910215331 CN101791617B (en) | 2009-12-23 | 2009-12-23 | Method for removing magnesium oxide dust in oriented silicon steel production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910215331 CN101791617B (en) | 2009-12-23 | 2009-12-23 | Method for removing magnesium oxide dust in oriented silicon steel production |
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| CN101791617A CN101791617A (en) | 2010-08-04 |
| CN101791617B true CN101791617B (en) | 2012-12-19 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103977987B (en) * | 2014-05-22 | 2017-02-01 | 成都海凌达机械有限公司 | Glass coating film inlet adsorption device |
| CN108856147B (en) * | 2018-06-07 | 2020-04-14 | 周常 | Plate dust removal device |
| CN110899346B (en) * | 2019-11-18 | 2022-03-18 | 武汉钢铁有限公司 | Dust removal device for removing dust and adhesive on surface of steel belt and operation method |
| CN114105232B (en) * | 2020-08-30 | 2023-09-12 | 宝山钢铁股份有限公司 | Silicon steel magnesium oxide wastewater treatment and recycling method |
| CN113649389B (en) * | 2021-07-26 | 2022-11-04 | 西华大学 | Carbon powder recovery device of hydroelectric generator set |
| CN115285438A (en) * | 2022-08-31 | 2022-11-04 | 贵州盘江民爆有限公司 | Boxing equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1597160A (en) * | 2004-08-13 | 2005-03-23 | 孟德章 | Dust removing device of metallurgical hot rolling fine rolling dust using dry treatment method |
| CN101386032A (en) * | 2008-10-23 | 2009-03-18 | 武汉科技大学 | Cold roller steel strip blowing and drawing type dust catching device |
| CN101433920A (en) * | 2008-12-12 | 2009-05-20 | 中冶南方工程技术有限公司 | Dust cleaning apparatus for cleaning magnesia powder dust on band steel |
-
2009
- 2009-12-23 CN CN 200910215331 patent/CN101791617B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1597160A (en) * | 2004-08-13 | 2005-03-23 | 孟德章 | Dust removing device of metallurgical hot rolling fine rolling dust using dry treatment method |
| CN101386032A (en) * | 2008-10-23 | 2009-03-18 | 武汉科技大学 | Cold roller steel strip blowing and drawing type dust catching device |
| CN101433920A (en) * | 2008-12-12 | 2009-05-20 | 中冶南方工程技术有限公司 | Dust cleaning apparatus for cleaning magnesia powder dust on band steel |
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