CN203922818U - Integrated two-stage magnetic purifies high-concentration waste wetting system - Google Patents
Integrated two-stage magnetic purifies high-concentration waste wetting system Download PDFInfo
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- CN203922818U CN203922818U CN201420348598.9U CN201420348598U CN203922818U CN 203922818 U CN203922818 U CN 203922818U CN 201420348598 U CN201420348598 U CN 201420348598U CN 203922818 U CN203922818 U CN 203922818U
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Abstract
The utility model discloses a kind of integrated two-stage magnetic and purify high-concentration waste wetting system, the primary magnetic that realizes magnetic suspension thing or magnetic flco is separated separated with degree of depth magnetic, comprise cover, frame, tank, transmission system, it is characterized in that, in tank, be disposed with water-in, magnetic drum, disk groups, spiral transferring slag mechanism, water outlet; Dreg scraper one end of described magnetic drum contacts with magnetic drum top is tangent, and the other end is near disk groups outer rim; Described magnetic drum and disk groups share a spiral transferring slag mechanism.Waste water enters disk groups with lower concentration of suspension and carries out high-purity separation after magnetic drum roughing out purifies, and effluent quality is good, facility compact, and reduced investment, is the more preferably processing unit for high-concentration waste water magnetically separating and purifying.
Description
Technical field
The utility model provides a kind of integrated two-stage magnetic to purify high-concentration waste wetting system, belongs to magnetically separating and purifying waste water technology field.
Background technology
Since developing the separated water purification technology of disc electromagnetic abroad the seventies in last century, the magnetically separating and purifying waste water technology equipment that the disk drive of take is representative is used widely at water treatment field, particularly aspect Metallurgical Waste Water processing.In recent years, disc electromagnetic isolation technique is also applied to remove the non-steel purification of waste water that suspended contaminant is major objective gradually, such as pit water, landscape water etc.By adding magnetic powder and water treatment agent to non magnetic sewage, non magnetic suspended contaminant in waste water is mixed with magnetic powder, flocculating becomes magnetic floc sedimentation, by magnetic separating apparatus, it is separated from water again, with this, reach the object purifying water, and the magnetic powder adding is through recycling use.As far back as the sixties in last century, USSR (Union of Soviet Socialist Republics) has carried out the research of magnetic flocculation.Compare with traditional solid-liquid separation technique, the sharpest edges of disc electromagnetic separation are that magnetic-adsorption speed is fast, magnetic adsorption area is large, and the floor space of FU treatment capacity is little, can realize large flow, high-purity separation magnetic suspension thing, purifying water body.In general, magnetic field magnetic force can be easy to flow through most of magnetic-particle in the action of a magnetic field district of absorption, but the weak particle of magnetic, may have little time by magnetic-adsorption or be adsorbed to run off because of current scour afterwards.Disk drive will be realized good isolation of purified effect, and key is coutroi velocity, improves magnetic adsorptive power, and the latter is relevant with magneticstrength and magnetic adsorption area.Wastewater streams can not be too fast through the flow velocity in the action of a magnetic field district, otherwise will have part Magnetic Materials or because magnetic is compared with weak or because being swept away and run off from magnetic disk surface.In the situation that flow velocity is certain, magneticstrength is higher, magnetic adsorption area is larger, magnetic suspension thing be adsorbed separated must be more thorough, outlet effect is also better.
The basic structure of disk drive is that a plurality of disks are to be uniformly-spaced arranged in the disk groups forming on main shaft.As the disk drive of magnetically separating and purifying technological core, performance is in continuous improvement." Magnadisc---a new industrial wastewater treatment system for use in the iron and steel industry " (a kind of Novel waste water treatment system for Iron And Steel Industry) that American engineer and architect's magazine (ASEA Journal 1977 Volume 50 Nomber 6) are delivered, this system is scraped the defeated slag of slag with disk groups in conjunction with V-arrangement section belt, the isolation of purified of realization to waste water, makes magnetic separation be processed into for reality for big yield.Patent (ZL92108011.5) discloses a kind of rare-earth magnetic dick separation purifying waste fitment.Patent " is scraped wheeled rare-earth magnetic dick separation purifying apparatus ", and (ZL 00244558.1) discloses a kind of dreg scraping stripe He Paotiao mechanism of disk drive.Patent (ZL201310106894.8) discloses a kind of magnetic force slag dumping assembly, has improved disk drive performance, and outlet effect is better.
Yet in actual engineering application, the large problem that magnetic separation technique exists is that in the situation that concentration of suspension is higher, disk drive detergent power is not enough, is difficult to guarantee effluent quality.Such as take magnetic suspension thing as main Metallurgical Waste Water, enter the magnetic suspension substrate concentration of disk drive conventionally in 300mg/L left and right, decontamination effect improving is good; But dragging for slag process, the eddy flow well before disk drive can cause that disk drive water inlet concentration of suspension obviously increases, sometimes reach 800mg/L, disk absorption purifying effect variation, and current common terms of settlement is that equalizing tank is set before disk drive, after eddy flow well, reduce because of the impact of the instantaneous rising of concentration of suspension on disk drive effluent quality.Take non magnetic suspended substance for another example as the main non-steel waste water of high density, adding the flocculation of magnetic and non magnetic suspended substance becomes after magnetic floc sedimentation, enter the concentration of suspension of disk drive usually more than 1000mg/L, far above Metallurgical Waste Water, the slag of disk absorption is very thick, and impact is absorption further, and easily cause the part of disk runner to stop up, the slag of absorption is easily taken out of disk drive by water simultaneously, and effluent quality is difficult to guarantee, thereby equipment need to amplify to improve processing power assurance outlet effect.On the whole, at present in the application of magnetic separation technique, solving the problem of the high device processes scarce capacity bringing of instantaneous or lasting concentration of suspension, is on the one hand equalizing tank to be set before magnetic separation system or settling tank reduces the concentration of suspension that enters magnetic separating apparatus as far as possible; There is again the zoom facility of being exactly, increase magnetic adsorption area, normally increase number of disks.These disposal ways, all certainly can obviously increase cost of investment, increase the floor space of whole technique, weaken the advantage performance of magnetically separating and purifying technology, have restricted applying of magnetically separating and purifying technology.
Sum up existing disk drive and purify existing subject matter for high-concentration waste water:
1) existing disk drive design, no matter the height of water inlet concentration of suspension, decontamination effect improving depends primarily on the fractionation by adsorption detergent power of disk groups.Concentration of suspension is high, and the thickness of disk institute slag absorbing is increased, and further the ability of slag absorbing weakens, and disk runner is local to be stopped up, and flow velocity is accelerated, and the weak slag of magnetic is easily flushed away, and affects effluent quality;
2) Design enlargement disk drive, such as the quantity increasing as the disk of the separated core component of magnetic, can improve outlet effect, but can cause equipment cost obviously to increase, take up an area increase.
Utility model content
In order to solve above-mentioned magnetic separation technique, in engineering reality, process the existing problem of high-concentration waste water, be that in the situation that the instantaneous increase of concentration of suspension or concentration of suspension itself are higher, disk drive detergent power is not enough, the problem that outlet effect is poor, the little advantage of performance magnetic separation technique floor space, control the cost of investment of magnetic separating technology, the utility model provides a kind of integrated two-stage magnetic to purify high-concentration waste wetting system, in floor space, in the situation that cost of investment is not significantly increased than existing disk drive, magnetically separating and purifying process is made as to two-stage, be that primary magnetic is separated separated with degree of depth magnetic, further, primary magnetic that the utility model proposes is separated, follow cost low, take up an area few principle, further, the primary magnetic separation that the utility model proposes be integrally formed equipment separated with degree of depth magnetic, the separated spiral transferring slag mechanism (comprising spiral transferring slag chute and defeated slag spiral) that shares of two-stage, be conducive to the follow-up unified recycling of slag, take up an area less, facility compact, energy consumption is low, cost is low, process high-concentration waste outlet capacity strong, outlet effect is good.
Before setting forth concrete technical scheme of the present utility model, in conjunction with aforementioned techniques background, further set forth technological thought of the present utility model:
Primary magnetic is separated, and Main Function is with less magnetic-adsorption area, at velocity ratio a large amount of stronger magnetic suspension thing of magnetic in fractionation by adsorption water body in situation faster; Degree of depth magnetic is then separated, and Main Function is with larger magnetic-adsorption area, and the part that magnetic suspension thing, the especially magnetic that fractionation by adsorption runs off from primary separation under low flow velocity is weak, guarantees effluent quality with this.After primary magnetic separating treatment, in fluid, magnetic suspension substrate concentration reduces, and conventionally can reduce more than 30%; Fluid is the separated link of penetration depth magnetic again, and the slag thickness that is adsorbed on magnetic disk surface is little, is difficult for stopping up magnetic separating flow tract, and flow velocity is slow, disk high adsorption capacity, and what adsorb comprises that the magnetic attraction that magnetic is subject to compared with weak slag is large, thereby is not easy to run off, effluent quality is better.On the other hand, realize two-stage magnetic isolation integral, separated separated with the degree of depth magnetic shared spiral transferring slag mechanism of primary magnetic, is convenient to the unified recycling of slag, such as the separating and recovering of magnetic kind in the press dewatering of Metallurgical Waste Water magnetic slag, non-steel waste water magnetic slag.Equipment is compacter, takes up an area less, and energy consumption is low.
Further, the technical solution of the utility model main points are: (1) utilizes the low magnetic drum simple in structure of cost of manufacture first to adsorb the magnetic suspension thing that a large amount of magnetic is stronger, bring into play again the remaining magnetic suspension thing of advantage degree of depth fractionation by adsorption that disk groups magnetic adsorption area is large, especially the weak part of magnetic, with this, improve system fractionation by adsorption purification efficiency, improve effluent quality; (2) realizing the slag that magnetic drum adsorbs coordinates with disk and is adsorbed by magnetic field, disk outer ring through dreg scraper, and scraped from taking disk out of by dreg scraping stripe and slag dumping magnetic roller with disk rotation with disk together with the slag adsorbing water, be pooled to same spiral transferring slag chute, with this, realize the integrated of two-stage separation.
The technical solution of the utility model is, a kind of integrated two-stage magnetic purifies high-concentration waste wetting system, the spiral transferring slag mechanism that comprises cover, frame, tank, water-in, water outlet, is uniformly-spaced installed on some disks in disk axis, matches with disk and scrape the dreg scraping stripe of slag, the magnetic roller matching with disk and dreg scraping stripe, match with magnetic roller, in tank, between water-in and disk, be also provided with magnetic drum, magnetic drum and disk are clockwise direction and rotate; Magnetic drum top is provided with to match with magnetic drum scrapes the dreg scraper of slag, and the outer rim of dreg scraper and disk is running fit.
Described spiral transferring slag mechanism comprises spiral transferring slag chute and is placed in the defeated slag spiral in spiral transferring slag chute.
Optimum, the clear distance of described magnetic drum and disk is not less than 20mm, avoids magnetic drum and disk magnetic field to interfere impact rotation each other.
Optimum, one end that described dreg scraper matches with magnetic drum and with one end of disk running fit, by non-magnet material making, optimization polyurethane material.
Optimum, one end of described dreg scraper and disk running fit is positioned under liquid level, and the slag that dreg scraper scrapes from magnetic drum is subject to buoyancy near disk outer rim, and the resistance of motion is little, more easily by magnetic field, disk outer ring, is adsorbed.
Optimum, between disk and water outlet, be provided with liquid level adjustable plate, to guarantee that when the flow rate fluctuation some can be immersed in fluid magnetic drum all the time.
Optimum, in the left side of magnetic drum, bottom of gullet arranges turbulence columns, is conducive to guarantee the touch opportunity on waste water and magnetic drum surface in water yield fluctuation situation.
Optimum, in magnetic drum left side, spoiler is set, spoiler to be to hang mode immersed in liquid level by the feet, while making the slag of magnetic drum surface adsorption be taken out of liquid level, because liquid level water impact departs from magnetic drum magnetic field, do not adsorb.
Magnetic drum magnet used is ferrite or rare-earth permanent magnet.
Principle of work: the pending waste water that contains magnetic suspension thing or magnetic floc sedimentation enters tank, first through the strong suspended substance of the separated magnetic of magnetic drum magnetic-adsorption, through the separated remaining magnetic suspension thing that comprises weak magnetic suspension thing of disk magnetic-adsorption, waste water is purified again; Be adsorbed in the magnetic slag on magnetic drum surface, the magnetic suspension thing or the magnetic floc sedimentation that are subject to magnetic attraction effect and assemble, with magnetic drum, rotate and taken out of liquid level, through dreg scraper, scrape from magnetic drum surface, flow to the periphery that dreg scraper bottom approaches disk, by magnetic field, disk outer ring, be adsorbed in disk card, the magnetic slag that fractionation by adsorption goes out from water with disk collects, with disk, rotate and scraped from magnetic disk surface by dreg scraping stripe, through the magnetic attraction effect of magnetic roller, take disk the action of a magnetic field district out of, then the scraper of scraping slag through matching with magnetic roller is scraped magnetic slag into spiral transferring slag chute and is exported by spiral.In the utility model, the setting of magnetic roller and scraper slag dumping all adopt the technical scheme described in ZL201310106894.8.
The utility model, for the suspended substance high density feature that enters disk drive, arranges magnetic drum at disk drive front end, utilizes the roughing out of magnetic drum effectively to reduce the concentration of suspension that enters disk drive, makes the separated effluent quality of disc electromagnetic better; Further, the dreg scraper of magnetic drum is arranged between magnetic drum and disk groups, the slag striking off from magnetic drum surface is subject to disk suction directly to enter the action of a magnetic field district, disk outer ring, thereby and the slag of inhaling from water body with disk by magnetic roller, adsorbed and struck off and take away magnetic disengaging zone by scraper.Effectively reduce enter disk waste strength, improve disk effluent quality in, the magnetic drum slag separated with disk drive two-stage converges in field regions, disk outer ring and adsorbs and scraped from output by scraper through magnetic roller, without the transfer mechanism of setting up the slag absorbing of magnetic drum institute such as defeated slag spiral or defeated pulp pump, this is particularly useful the in the situation that of limited in place, convenient especially to unified recycling use magnetic; The slag of two-stage separation is exported by same spiral transferring slag mechanism, has also reduced equipment cost and has reduced energy consumption.
Because the strong slag of magnetic is subject to larger magnetic attraction and is easily adsorbed very soon by magnetic field, when fluid has just entered the action of a magnetic field district simultaneously, magnetic suspension substrate concentration is high, therefore contain the effluent stream of magnetic suspension thing or magnetic floc sedimentation in the process in the action of a magnetic field district of even field intensity, the quantity of slag of being adsorbed by magnetic field magnetic force reduces with the increase of the magnetic journey length of the action of a magnetic field district (fluid flow through), from fluid, enters the action of a magnetic field district to the thickness that leaves magnetic force slag absorbing the process in the action of a magnetic field district from large to small.In the utility model, disk turns to and is made as clockwise direction, makes the large slag of thickness of disk absorption be taken rapidly out of liquid level with the rotation of disk, has guaranteed the as far as possible unimpeded of disk runner, and magnetic fractionation by adsorption is more thorough, and outlet effect is better.In the situation that it is high to enter the magnetic suspension substrate concentration of disk runner, such disk turns to setting especially useful.Magnetic drum turns to and is set as clockwise direction, and reason is identical.
Those skilled in the art easily understand, under low flow velocity fully weak magnetic-particle of fractionation by adsorption magnetic to guarantee effluent quality, required disk drive magnetic adsorption area is large, floor space is very little, this just disk drive structure be better than the place of magnetic drum, be also the inevitable choice that guarantees effluent quality.The utility model increased primary magnetic separation before the separation of degree of depth magnetic, and effect is not equal to the magnetic-adsorption area that equivalent increases the separation of degree of depth magnetic.With existing disc electromagnetic isolation of purified comparison in equipment, the integrated two-stage magnetically separating and purifying equipment that the utility model provides has been given full play to the roughing out of magnetic drum and the high-purity separation function of disk drive, effluent quality is good, facility compact, reduced investment is the more preferably processing unit for high-concentration waste water magnetically separating and purifying.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1, the positive sectional structure schematic diagram of the utility model
Fig. 2, the sectional structure schematic diagram of bowing of the present utility model.
1. water-ins in figure; 2. spoiler; 3. turbulence columns; 4. magnetic drum; 5. dreg scraper; 6. disk; 7. dreg scraping stripe; 8. magnetic roller; 9. defeated slag spiral; 10. spiral transferring slag chute; 11. tanks; 12. covers; 13. liquid level adjustable plates; 14. water outlets; 15. frames; 16. slag notches; 17. disk axis; 18. scrapers.
Embodiment
Shown in Fig. 1 and Fig. 2, a kind of integrated two-stage magnetic purifies high-concentration waste wetting system, the spiral transferring slag mechanism that comprises cover 12, frame 15, tank 11, water-in 1, water outlet 14, is uniformly-spaced installed on some disks 6 in disk axis 17, matches with disk 6 and scrape the dreg scraping stripe 7 of slag, the magnetic roller 8 matching with disk 6 and dreg scraping stripe 7, match with magnetic roller 8, between the interior water-in 1 of tank 11 and disk 6, be also provided with magnetic drum 4, magnetic drum 4 and disk 6 are clockwise direction and rotate; Magnetic drum 4 tops are provided with to match with magnetic drum 4 scrapes the dreg scraper 5 of slag, and dreg scraper 5 is running fit with the outer rim of disk 6.Magnetic drum 4 is not less than 20mm with the clear distance of disk 6, avoids magnetic drum 4 and disk 6 magnetic fields to interfere impact rotation each other.One end that dreg scraper 5 matches with magnetic drum 4 and with one end of disk 6 running fit, by non-magnet material, make optimization polyurethane material in the present embodiment.Dreg scraper 5 is positioned under liquid level with one end of disk 6 running fit, and the slag that dreg scraper 5 scrapes from magnetic drum 4 is subject to buoyancy near disk 6 outer rims, and the resistance of motion is little, more easily by disk 6 magnetic fields, outer ring, is adsorbed.Between disk 6 and water outlet 14, be provided with liquid level adjustable plate 13, to guarantee that when the flow rate fluctuation some can be immersed in fluid magnetic drum 4 all the time.In tank 11 bottoms, the left side of magnetic drum 4, turbulence columns 3 is set, is conducive to guarantee the touch opportunity on waste water and magnetic drum 4 surfaces in water yield fluctuation situation.In magnetic drum 4 left sides, spoiler 2 is set, spoiler 2 to be to hang mode immersed in liquid level by the feet, while making the slag of magnetic drum 4 surface adsorption be taken out of liquid level, because liquid level water impact departs from magnetic drum 4 magnetic fields, do not adsorb.In the present embodiment, magnetic drum 4 magnet used is ferrite or rare-earth permanent magnet.Spiral transferring slag mechanism in the present embodiment comprises spiral transferring slag chute 10 and is placed in the defeated slag spiral 9 in spiral transferring slag chute 10.
Treating processes: pending waste water is through adding magnetic and water treatment agent, and in waste water, suspended substance fully mixes with magnetic, flocculating becomes magnetic floc sedimentation; Waste water containing magnetic floc sedimentation is first separated through magnetic drum 4 magnetic-adsorptions, then is isolated purification through disk 6 magnetic-adsorptions.Wherein, being adsorbed in the magnetic floc sedimentation that magnetic slag on magnetic drum 4 surfaces assemble rotates and is taken out of liquid level with magnetic drum 4, through dreg scraper 5, scrape from magnetic drum 4 surfaces, flow automatically to the periphery that dreg scraper 5 bottoms approach disk 6, by disk 6 magnetic fields, outer ring, adsorbed, collect with disk 6 magnetic slag that fractionation by adsorption goes out from water, with disk 6, rotate and scraped from disk 6 surfaces by dreg scraping stripe 7, through the magnetic attraction effect of magnetic roller 8, take disk 6 the action of a magnetic field districts out of, then the scraper 18 of scraping slag through matching with magnetic roller 8 scrapes magnetic slag into spiral transferring slag chute 10 and by defeated slag spiral 9 from slag notch 16 outputs.Magnetic roller 8 structures in the present embodiment, magnetic roller 8 matches with disk 6, dreg scraping stripe 7 and the mode of scraper 18 slag dumpings all adopts the technical scheme described in ZL201310106894.8.
The utility model brings forward integrated two-stage magnetically separating and purifying thinking, technical scheme and the embodiment for high-concentration waste water.Magnetic drum described in the utility model and disk groups and the concrete making of scraping accordingly slag slag dumping assembly can be existing various common practices.These those skilled in the art can also be on the basis of technological thought described in the utility model, technical scheme, in addition flexible in concrete enforcement, such as magnetic drum is changed as minidisk; And any not creative improvement, all within the utility model protection domain.
Claims (9)
1. an integrated two-stage magnetic purifies high-concentration waste wetting system, the spiral transferring slag mechanism that comprises cover (12), frame (15), tank (11), water-in (1), water outlet (14), is uniformly-spaced installed on some disks (6) in disk axis (17), matches scrape the dreg scraping stripe (7) of slag, the magnetic roller (8) matching with disk (6) and dreg scraping stripe (7), match with magnetic roller (8) with disk (6), is characterized in that:
In tank (11), between water-in (1) and disk (6), be also provided with magnetic drum (4), magnetic drum (4) and disk (6) are clockwise direction and rotate;
Magnetic drum (4) top is provided with to match with magnetic drum (4) scrapes the dreg scraper (5) of slag, and dreg scraper (4) is running fit with the outer rim of disk (6).
2. integrated two-stage magnetic according to claim 1 purifies high-concentration waste wetting system, it is characterized in that, described magnetic drum (4) is not less than 20mm with the clear distance of disk (6).
3. integrated two-stage magnetic according to claim 1 purifies high-concentration waste wetting system, it is characterized in that, one end that described dreg scraper (5) matches with magnetic drum (4) and with one end of disk (6) running fit, by non-magnet material, make.
4. integrated two-stage magnetic according to claim 1 purifies high-concentration waste wetting system, it is characterized in that, described dreg scraper (4) is positioned under liquid level with one end of disk (6) running fit.
5. integrated two-stage magnetic according to claim 1 purifies high-concentration waste wetting system, it is characterized in that, between disk (6) and water outlet (14), is provided with liquid level adjustable plate (13).
6. integrated two-stage magnetic according to claim 1 purifies high-concentration waste wetting system, it is characterized in that, in left side tank (11) bottom of magnetic drum (4), turbulence columns (3) is set.
7. integrated two-stage magnetic according to claim 1 purifies high-concentration waste wetting system, it is characterized in that, in magnetic drum (4) left side, spoiler (2) is set.
8. integrated two-stage magnetic according to claim 1 purifies high-concentration waste wetting system, it is characterized in that, magnetic drum (4) magnet used is ferrite or rare-earth permanent magnet.
9. integrated two-stage magnetic according to claim 1 purifies high-concentration waste wetting system, it is characterized in that, described spiral transferring slag mechanism comprises spiral transferring slag chute (10) and is placed in the defeated slag spiral (9) in spiral transferring slag chute (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420348598.9U CN203922818U (en) | 2014-06-27 | 2014-06-27 | Integrated two-stage magnetic purifies high-concentration waste wetting system |
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| CN201420348598.9U CN203922818U (en) | 2014-06-27 | 2014-06-27 | Integrated two-stage magnetic purifies high-concentration waste wetting system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104071877A (en) * | 2014-06-27 | 2014-10-01 | 成都源蓉科技有限公司 | Integrated high-concentration wastewater two-stage magnetic purification equipment |
| CN110436588A (en) * | 2018-12-26 | 2019-11-12 | 环能科技股份有限公司 | A kind of dross processing unit and ultra-magnetic separator |
| CN113272068A (en) * | 2018-11-14 | 2021-08-17 | 铁桥运营私人有限公司 | Method and apparatus for processing magnetite |
-
2014
- 2014-06-27 CN CN201420348598.9U patent/CN203922818U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104071877A (en) * | 2014-06-27 | 2014-10-01 | 成都源蓉科技有限公司 | Integrated high-concentration wastewater two-stage magnetic purification equipment |
| CN104071877B (en) * | 2014-06-27 | 2015-11-18 | 成都源蓉科技有限公司 | Integration two-stage magnetic purification high-concentration waste wetting system |
| CN113272068A (en) * | 2018-11-14 | 2021-08-17 | 铁桥运营私人有限公司 | Method and apparatus for processing magnetite |
| CN110436588A (en) * | 2018-12-26 | 2019-11-12 | 环能科技股份有限公司 | A kind of dross processing unit and ultra-magnetic separator |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20141105 Effective date of abandoning: 20151118 |
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