CN202590949U - Automatic permanent-magnet magnetic bar iron removing device - Google Patents
Automatic permanent-magnet magnetic bar iron removing device Download PDFInfo
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- CN202590949U CN202590949U CN 201220051757 CN201220051757U CN202590949U CN 202590949 U CN202590949 U CN 202590949U CN 201220051757 CN201220051757 CN 201220051757 CN 201220051757 U CN201220051757 U CN 201220051757U CN 202590949 U CN202590949 U CN 202590949U
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- bar magnet
- scraper
- crossbeam
- lifting platform
- drive
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Abstract
An automatic permanent-magnet magnetic bar iron removing device belongs to the magnetic separation field in which solid material is separated from fluid. The device comprises a machine frame used for fixing and supporting all pieces, a lifting mechanism mounted inside the machine frame and used for driving the magnetic bar to move up and down, a scraping mechanism mounted in the middle beam of the machine frame and matched with the magnetic bar to scrape iron chips absorbed onto the magnetic bar, a discharge mechanism mounted on the middle beam of the machine frame, located above the scraping mechanism, and used for cleaning iron chips falling on the pieces to be scraped, and a magnetic bar group arranged on a lifting platform and used for absorbing iron chips. The utility model has the benefit that iron removal is realized through simple technologies and procedures, which greatly shortens iron removal time, improves work efficiency, and saves equipment investment and maintenance cost.
Description
Technical field
The utility model belongs to the magnetic separation field of separating solids material from fluid, is specifically related to a kind of device that adopts permanent magnet from slurry, to remove iron filings.
Background technology
Often use in fields such as chemical industry, potteries liquid slurry as raw material to produce solid product.Because the mineral matter itself from the earth's crust contains a certain amount of irony composition.Because contain a large amount of iron filings in the slurry of processing, make the pottery field of building of floor tile or internal and external wall brick again, there is the floor tile that iron filings can cause producing in the slurry and has stain, influenced product quality.Given this, sizing material iron removing becomes the important step of building the pottery enterprise production.Because it is increasingly high that the ceramic quality scale requires, to the also corresponding raising of the requirement of raw material, but through for many years consumption; It is exhausted that the high-grade mineral resources is tending towards; In the use of low-grade mineral resources unavoidable, so manufacturer more and more payes attention to the deironing problem, and equipment for removing ferric ion is had higher requirement.In order to obtain high-quality de-ferrous effect, originally building ceramics factory adopts artificial bar magnet deferrization process, through the suction-operated of bar magnet the iron filings in the slurry is adsorbed onto on the bar magnet, and then leans on manpower that the iron filings on the bar magnet are erased.This deferrization process is simple and convenient, but efficient is very low, can't adapt to the needs that the big output of modernization is produced.
For enhancing productivity, people have invented the full automatic drum type magnetic separator de-ironing, and this kind magnetic separator de-ironing comprises two cylinders (master rotor, auxiliary cylinder), in two cylinders permanent magnet is set all, and slurry drops into the below of master rotor from hopper.In the slurry process of flowing; Iron filings in it are adsorbed on the master rotor outer wall; Master rotor rotates the magnet positions place that iron filings is brought to auxiliary cylinder, and the magnet in the auxiliary cylinder is adsorbed onto the iron filings on the master rotor outer wall on the auxiliary cylinder outer wall, with clear water the iron filings on the auxiliary cylinder outer wall is rinsed out then; This kind magnetic separator de-ironing has been realized the deironing automation, has adapted to the demand of suitability for industrialized production.But the magnetic field intensity in this kind magnetic separator de-ironing cylinder is not high, and the peripheral interior iron filings of slurry of master rotor inner magnet adsorb not thorough.Significantly improve magnetic field intensity and can improve de-ferrous effect, but the iron filings that are adsorbed on the auxiliary cylinder outer wall are difficult to be eliminated.
For further improving de-ferrous effect, improve de-ironing efficiency, people have invented electric magnetic iron remover, are provided with solenoid in the electric magnetic iron remover, just produce high-intensity magnetic field during energising around the solenoid.The magnetic field intensity of electric magnetic iron remover is improved, but also exists the problem that the slurry waste is serious, consuming electric power is very big.Moreover the functional stabilization of electric magnetic iron remover is relatively poor, the problem of repairing often occurs shutting down.For reaching excellent de-ferrous effect, much build Tao Qiye and adopted the mode of multiple equipment for removing ferric ion fit applications to solve the deironing problem, but equipment investment is very big.
In the process of development tramp iron separator, should put forth effort on the comprehensive unified effect that improves de-ferrous effect, easy cleaning iron filings, reduces equipment investment and use cost.Along with further developing of building ceramics factory raw material iron removal technology, constantly there is being new technology to emerge again aspect comprehensive raising de-ferrous effect, the easy cleaning iron filings.In the domestic patent, publication number is that the patent of invention of CN1872421A discloses a kind of equipment for removing ferric ion, and it adopts the bar magnet deironing.Equipment adopts a plurality of slurry tubes, in each slurry tube the bar magnet group is set, and after the iron filings in the slurry are adsorbed on the bar magnet, adopts hoisting mechanism that the bar magnet group is upwards pulled out the slurry tube, and then bar magnet group level is pulled to the iron filings dish top on the frame.Scraper plate on the bar magnet moves down then, and the iron filings that are adsorbed on the bar magnet are scraped to the iron filings dish.This technology adopts the deironing step by step of a plurality of bar magnet groups, and de-ferrous effect further strengthens, but its defective also can not be ignored.Owing to adopt a plurality of slurry tubes; One cover hoisting mechanism turns to the top of each slurry tube; Earlier the bar magnet group is hung out disengaging slurry tube, hoisting mechanism is moved horizontally to the top of iron filings dish more then, and the scraper plate on the bar magnet moves the iron filings that are adsorbed on the bar magnet are scraped to the iron filings dish then.In this process, deironing each time all will be experienced: the bar magnet group rises, and---the bar magnet group moves horizontally, and---bar magnet group that scraper plate moves down---the horizontal return of bar magnet group---falls.In addition, hoisting mechanism need move to different slurry tube tops, causes the overlong time of deironing each time, has reduced production efficiency.Moreover investment of devices is bigger, and the control device that is adopted is many, and malfunctioning node is a lot.
In sum, be the demand that pottery enterprise production high quality of products is built in adaptation, must adopt deferrization process and equipment efficiently, realize the comprehensive unification that improves de-ferrous effect, raising de-ironing efficiency, easy cleaning iron filings, reduces equipment investment.Yet, never have desirable equipment for removing ferric ion in the prior art and occur, can't satisfy and build the combination property requirement of Tao Qiye for equipment for removing ferric ion.
The utility model content
To the defective that prior art exists, the purpose of the utility model is to provide a kind of automatic permanent magnetism bar magnet equipment for removing ferric ion, can reduce the needed time of deironing each time, reduces equipment cost, improve de-ferrous effect.
The utility model solves the technical scheme that its technical problem adopted: a kind of automatic permanent magnetism bar magnet equipment for removing ferric ion, comprise frame, elevating mechanism, scraper mechanism, discharge mechanism, slurry bucket, bar magnet, and it is characterized in that: said central rack is provided with crossbeam; Said elevating mechanism is installed in the frame; Elevating mechanism comprises lifting platform; Said scraper mechanism is arranged on the crossbeam, and scraper mechanism comprises strikes off part; Said discharge mechanism is installed on the crossbeam, and is positioned at the scraper mechanism top, is used to clear away the iron filings that drop on the scraper mechanism; Said slurry bucket is positioned over the frame bottom, and is positioned at the scraper mechanism below; Said bar magnet is fixed on the lifting platform, and when elevating mechanism rose, bar magnet was driven rising and passed the space of striking off between the part by lifting platform; When elevating mechanism descended, lifting platform and bar magnet entered into the slurry bucket.
Preferably, said elevating mechanism also comprises pulley, drive rail and hydraulic cylinder; Said pulley is installed on the crossbeam of the frame left and right sides through cooperation; Said drive rail is vertically set on the lifting platform both sides, and drive rail is stuck in the pulley race; Said hydraulic cylinder is fixed on the crossbeam, and the piston rod and the drive rail of hydraulic cylinder are fixed, and piston rod drives drive rail and lifting platform rises and descends.
Preferably, said scraper mechanism also comprises bearing block, linkage and cylinder; The said part that strikes off comprises axle, scraper plate and bearing; The two ends of said axle are separately installed with bearing; Said bearing matching and fixing is in bearing block; Said bearing block equidistance is installed on the crossbeam of front and back and makes the alignment of corresponding antero posterior axis bearing axle center; Said scraper plate is vertically fixed on the axle, and the vertical edge of scraper plate is evenly distributed to have slot scraping, and the slot scraping of adjacent scraper plate can be formed complete through hole; Said linkage comprises crank and connecting rod; Said crank one end is connected with rod hinge connection, and the other end is connected with axle one end; Be fixed with on the said connecting rod and crank arm; Said cylinder is installed in crossbeam below, and its piston rod is articulated and connected with cranking arm.
Preferably, said discharge mechanism comprises translation assembly, sweeping through the material plate and discharge gate; Said translation mechanism comprises horizontal driving-chain, drive motors and drive sprocket; Said horizontal driving-chain and drive sprocket are meshing with each other; Said drive sprocket is installed on the crossbeam; Said sweeping through the material plate two ends are fixed on two horizontal driving-chains; Said discharge gate is installed in the below of crossbeam rear end; Said drive motors and drive sprocket are through the mode transferring power of chain drive.
Preferably, said bar magnet bottom is fixed on the lifting platform and is evenly distributed, and the shape of through holes that the slot scraping on the shape of bar magnet cross section and adjacent two scraper plates is formed adapts.
Preferably, it also comprises guide plate, and on the crossbeam, transverse slat was positioned on the discharge mechanism before and after said guide plate two ends riser placed, and guide plate is provided with identical with bar magnet quantity and the suitable through hole that it passes.
Compared with prior art, the beneficial effect of the utility model is:
1, owing to taked open and close type to strike off part, bar magnet is upwards spurred in the process of disengaging slurry bucket after adsorb iron filings, and open and close type strikes off part and opens and do not hinder moving upward of bar magnet; In the process that falls, open and close type strikes off part and closes at bar magnet, and the iron filings on the bar magnet are scraped to open and close type and struck off on the part.So, each road iron removal step only has the rising of bar magnet and two processes that descend, and has significantly reduced the deironing time.
2, after the iron filings on the bar magnet are scraped and struck off on the part to open and close type, only need to adopt the sweeping through the material plate that open and close type is struck off iron filings on the part and clear away in situ and get final product, do not need extra iron filings dish, reduced equipment investment, make more compactness of equipment.
3, owing to work step in the iron removal step is few, correspondingly simplified equipment, malfunctioning node is few, and maintenance cost is low.
4, because scraper plate is scraped and is embedded with rubber blanket on the sky, the infringement of having avoided the long-term friction of bar magnet and scraper plate to cause has prolonged service life of bar magnet.
Description of drawings
Fig. 1 is the front view of the utility model;
Fig. 2 is the side view of the utility model;
Fig. 3 is the utility model scraper mechanism closure state sketch map;
Fig. 4 is the utility model scraper mechanism open mode sketch map;
Fig. 5 is for striking off the structural representation of part in the scraper mechanism shown in Figure 3.
Be labeled as among the figure:
1, frame; 11, crossbeam; 2, elevating mechanism; 21, pulley; 22, drive rail; 23, lifting platform; 24, hydraulic cylinder; 3, scraper mechanism; 31, strike off part; 311, square shaft; 312, scraper plate; 313, bearing; 32, bearing block; 33, linkage; 331, crank; 332, connecting rod; 34, cylinder; 35, crank arm; 4, discharge mechanism; 41, translation assembly; 411, drive sprocket; 412, horizontal driving-chain; 413, drive motors; 42, sweeping through the material plate; 43, discharge gate; 5, slurry bucket; 6, bar magnet; 7, guide plate.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model done further describing:
Like Fig. 1,2,3, shown in 4, a kind of automatic permanent magnetism bar magnet equipment for removing ferric ion comprises frame 1, elevating mechanism 2, scraper mechanism 3, discharge mechanism 4, slurry bucket 5 and bar magnet 6, it is characterized in that: said frame 1 middle part is provided with crossbeam 11; Said elevating mechanism 2 is installed in the frame 1, and elevating mechanism 2 comprises lifting platform 23; Said scraper mechanism 3 is arranged on the crossbeam 11, and scraper mechanism 3 comprises strikes off part 31; Said discharge mechanism 4 is installed on the crossbeam 11, and is positioned at scraper mechanism 3 tops, is used to clear away the iron filings that drop on the scraper mechanism 3; Said slurry bucket 5 is positioned over frame 1 bottom, and is positioned at scraper mechanism 3 belows; Said bar magnet 6 is fixed on the lifting platform 23, and when elevating mechanism 2 rose, bar magnet 6 was driven rising and passed the space of striking off between the part 31 by lifting platform 23; When elevating mechanism 2 descended, lifting platform 23 and bar magnet 6 entered into slurry bucket 5.
Said elevating mechanism 2 also comprises pulley 21, drive rail 22 and hydraulic cylinder 24; Said pulley 21 is installed on the both sides crossbeam 11 through cooperation; Said drive rail 22 is arranged on lifting platform 23 both sides, and drive rail 22 is stuck in pulley 21 races, and drive rail 22 connects in twos; Said hydraulic cylinder 24 is fixed on the crossbeam 11, and the piston rod of hydraulic cylinder 24 and drive rail 22 are fixing.
Said scraper mechanism 3 also comprises bearing block 32, linkage 33 and cylinder 34; The said part 31 that strikes off comprises axle 311, scraper plate 312 and bearing 313; The two ends of said axle 311 are separately installed with bearing 313; Said bearing 313 matching and fixing are 32 li of bearing blocks, and said bearing block 32 equidistance are installed on the crossbeam 11 of front and back and make the alignment of corresponding antero posterior axis bearing 32 axle center; Said scraper plate 312 is vertically fixed on the axle 311, and scraper plate 312 vertical edges are evenly distributed to have slot scraping, and the slot scraping of adjacent scraper plate 312 can be formed complete through hole.
Said linkage 33 comprises crank 331 and connecting rod 332; Said crank 331 1 ends and connecting rod 332 are articulated and connected, and the other end is connected with axle 311 1 ends, is fixed with on the said connecting rod 332 and cranks arm 35; Said cylinder 34 is installed in crossbeam 11 belows, and its piston rod 35 is articulated and connected with cranking arm.
Said discharge mechanism 4 comprises translation assembly 41, sweeping through the material plate 42 and discharge gate 43; Said translation assembly 41 comprises drive sprocket 411, horizontal driving-chain 412 and drive motors 413; Said drive sprocket 411 is installed in respectively on the left and right sides crossbeam 11; Said horizontal driving-chain 412 is meshing with each other with drive sprocket 411, and the rotating shaft of said drive motors 413 and drive sprocket 411 are through the mode transferring power of chain drive, and said sweeping through the material plate 42 two ends are fixed on two horizontal driving-chains 412; Sweeping through the material plate 42 lower edges contact with scraper plate 312, and said discharge gate 43 is installed in the below of rear cross beam 11.
Said bar magnet 6 bottoms are fixed on the lifting platform 23 and are evenly distributed, and the shape of through holes that the slot scraping on the shape of bar magnet 6 cross sections and adjacent two scraper plates 312 is formed adapts.
On the crossbeam 11, transverse slat was positioned on the discharge mechanism 4 before and after said guide plate 7 two ends risers placed, and guide plate 7 is provided with identical with bar magnet 6 quantity and the suitable through hole that it passes.
The utility model operation principle and the course of work are following:
In the original state, lifting platform 23 is positioned at the extreme higher position, strikes off part 31 and is in closure state, and sweeping through the material plate 42 is positioned at translation assembly 41 foremost; When slurry enters into slurry bucket 5, press start button, hydraulic cylinder 24 piston rods pulling lifting platform 23 descends; Bar magnet 6 passes to be scraped the hole and falls in the slurry bucket 5 and stay for some time with lifting platform 23 and begin to adsorb the iron filings in the slurry, and adsorption time finishes, and the piston rod of cylinder 34 promotes linkage 33 motions; Thereby drive and to strike off part 31 and be rotated counterclockwise 90 ° and make it reach folding condition, hydraulic cylinder 24 piston rods promoted lifting platform 23 and rose this moment, and bar magnet 6 is moving upward through the slit of respectively striking off between the part 31 under the drive of lifting platform 23; When lifting platform 23 touched the support of guide plate 7, lifting platform 23 drove guide plate 7 and together rises, and guide plate constraint bar magnet 6 prevents the shake inclination; Hydraulic cylinder 24 stops when lifting platform 23 is raised to the extreme higher position, and the linkage 33 of the piston rod of cylinder 34 pulling simultaneously strikes off part 31 and turns clockwise 90 ° and make it be in closure state thereby drive; Hydraulic cylinder 24 piston rods pulling this moment lifting platform 23 falls; Bar magnet 6 passes to be scraped the hole and descends, and scraper plate 312 will be adsorbed on iron filings on the bar magnet 6 and scrape and strike off on the part 31, when bar magnet 6 passes completely through when scraping the hole and reducing to lowest order; Drive motors 412 runnings drive sweeping through the material plate 42 and move horizontally backward; The sweeping through the material plate 42 cleaning iron filings on scraper component 31 that drop, and finally move to rearmost end and make iron filings pass through discharge gate 43 to discharge, drive motors 412 counter-rotatings this moment drive sweeping through the material plates 42 and are moved horizontally to reset terminal forward; Hydraulic cylinder 24 piston rods promote lifting platform 23 and move up to the extreme higher position, and this moment, whole iron removal finished; So move in circles and realize continuous automatic iron removing.
The above; It only is the preferred embodiment of the utility model; Be not to be the restriction of the utility model being made other form, any professional and technical personnel of being familiar with possibly utilize the technology contents of above-mentioned announcement to change or be modified as the equivalent embodiment of equivalent variations.But every the utility model technical scheme content that do not break away to any simple modification, equivalent variations and remodeling that above embodiment did, still belongs to the protection domain of the utility model technical scheme according to the technical spirit of the utility model.
Claims (6)
1. an automatic permanent magnetism bar magnet equipment for removing ferric ion comprises frame (1), elevating mechanism (2), scraper mechanism (3), discharge mechanism (4), slurry bucket (5) and bar magnet (6), it is characterized in that: said frame (1) middle part is provided with crossbeam (11); Said elevating mechanism (2) is installed in the frame (1), and elevating mechanism (2) comprises lifting platform (23); Said scraper mechanism (3) is arranged on the crossbeam (11), and scraper mechanism (3) comprises strikes off part (31); Said discharge mechanism (4) is installed on the crossbeam (11), and is positioned at scraper mechanism (3) top, is used for cleaning and drops on the iron filings that strike off on the part (31); Said slurry bucket (5) is positioned over frame (1) bottom, and is positioned at scraper mechanism (3) below; Said bar magnet (6) is fixed on the lifting platform (23), and when elevating mechanism (2) rose, bar magnet (6) was driven rising and passed the space of striking off between the part (31) by lifting platform (23); When elevating mechanism (2) descended, lifting platform (23) and bar magnet (6) entered into slurry bucket (5).
2. according to the said automatic permanent magnetism bar magnet of claim 1 equipment for removing ferric ion, it is characterized in that: said elevating mechanism (2) also comprises pulley (21), drive rail (22) and hydraulic cylinder (24), and said pulley (21) is installed on frame (1) left and right sides crossbeam (11) through cooperation; Said drive rail (22) is vertically set on the both sides of lifting platform (23), and drive rail (22) is stuck in pulley (21) race; Said hydraulic cylinder (24) is fixed on the crossbeam (11), and the piston rod of hydraulic cylinder (24) and drive rail (22) are fixing, and piston rod drives drive rail (22) and lifting platform (23) rises or descends.
3. according to the said automatic permanent magnetism bar magnet of claim 2 equipment for removing ferric ion, it is characterized in that: said scraper mechanism (3) also comprises bearing block (32), linkage (33) and cylinder (34), and the said part (31) that strikes off comprises axle (311), scraper plate (312) and bearing (313); The two ends of said axle (311) are separately installed with bearing (313); Said bearing (313) matching and fixing is in bearing block (32) lining; The alignment of corresponding antero posterior axis bearing (32) axle center is gone up and made to crossbeam (11) before and after said bearing block (32) equidistance was installed in; Said scraper plate (312) is vertically fixed on the axle (311), and vertically the edge is evenly distributed that slot scraping arranged for scraper plate (312), and the slot scraping of adjacent two scraper plates (312) can be formed complete through hole;
Said linkage (33) comprises crank (331) and connecting rod (332); Said crank (331) one ends and connecting rod (332) are articulated and connected, and the other end is connected with axle (311) one ends; Said connecting rod is fixed with crank arm (35) on (332); Said cylinder (34) is installed in crossbeam (11) below, and its piston rod is articulated and connected with crank arm (35).
4. according to the said automatic permanent magnetism bar magnet of claim 3 equipment for removing ferric ion; It is characterized in that: said discharge mechanism (4) comprises translation assembly (41), sweeping through the material plate (42) and discharge gate (43), and said translation assembly (41) comprises drive sprocket (411), horizontal driving-chain (412) and drive motors (413); Said drive sprocket (411) is installed in respectively on the left and right sides crossbeam (11); Said horizontal driving-chain (412) is meshing with each other with drive sprocket (411); The rotating shaft of said drive motors (413) and drive sprocket (411) are through the mode transferring power of chain drive; Said sweeping through the material plate (42) two ends are fixed on two horizontal driving-chains (412), and sweeping through the material plate (42) lower edge contacts with scraper plate (312); Said discharge gate (43) is installed in the below of rear cross beam (11).
5. according to the said automatic permanent magnetism bar magnet of claim 4 equipment for removing ferric ion; It is characterized in that: it is last and evenly distributed that said bar magnet (6) bottom is fixed on lifting platform (23), and the shape of through holes that the shape of bar magnet (6) cross section and the slot scraping on adjacent two scraper plates (312) are formed adapts.
6. according to the said automatic permanent magnetism bar magnet of claim 5 equipment for removing ferric ion; It is characterized in that: also comprise guide plate (7); Said guide plate (7) two ends riser places on the front and back crossbeams (11); Transverse slat is positioned on the discharge mechanism (4), and guide plate (7) is provided with identical with bar magnet (6) quantity and the suitable through hole that it passes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220051757 CN202590949U (en) | 2012-02-17 | 2012-02-17 | Automatic permanent-magnet magnetic bar iron removing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220051757 CN202590949U (en) | 2012-02-17 | 2012-02-17 | Automatic permanent-magnet magnetic bar iron removing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202590949U true CN202590949U (en) | 2012-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220051757 Expired - Fee Related CN202590949U (en) | 2012-02-17 | 2012-02-17 | Automatic permanent-magnet magnetic bar iron removing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202590949U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553712A (en) * | 2012-02-17 | 2012-07-11 | 淄博正邦知识产权企划有限公司 | Automatic permanent-magnet magnetic bar iron removal equipment |
| CN114042860A (en) * | 2021-11-29 | 2022-02-15 | 金耐源(河南)工业科技有限公司 | Low-emission environment-friendly casting mold material recycling process |
-
2012
- 2012-02-17 CN CN 201220051757 patent/CN202590949U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553712A (en) * | 2012-02-17 | 2012-07-11 | 淄博正邦知识产权企划有限公司 | Automatic permanent-magnet magnetic bar iron removal equipment |
| CN102553712B (en) * | 2012-02-17 | 2014-09-10 | 淄博正邦知识产权企划有限公司 | Automatic permanent-magnet magnetic bar iron removal equipment |
| CN114042860A (en) * | 2021-11-29 | 2022-02-15 | 金耐源(河南)工业科技有限公司 | Low-emission environment-friendly casting mold material recycling process |
| CN114042860B (en) * | 2021-11-29 | 2024-02-09 | 金耐源(河南)工业科技有限公司 | Low-emission environment-friendly casting mold material recycling process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20130217 |