CN1994578A - High-gradient magnetic separator - Google Patents
High-gradient magnetic separator Download PDFInfo
- Publication number
- CN1994578A CN1994578A CNA2006101324323A CN200610132432A CN1994578A CN 1994578 A CN1994578 A CN 1994578A CN A2006101324323 A CNA2006101324323 A CN A2006101324323A CN 200610132432 A CN200610132432 A CN 200610132432A CN 1994578 A CN1994578 A CN 1994578A
- Authority
- CN
- China
- Prior art keywords
- magnetic
- ore deposit
- deposit device
- concentrate
- change
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a high-gradient magnetic selector, which comprises selecting ring, driver, mineral feeder, fine mineral discharger, and fine mineral collector, wherein the selecting ring comprises rotation ring, accumulation medium stack, upper magnetic pole, lower magnetic pole and active coil; the discharger comprises parallel hydraulic discharger and wind discharger at the outer side of rotation ring, while they are relative to the fine mineral collector at the inner side of rotation ring. The invention combines water washing and wind washing to effectively remove the magnetic particles on the magnetic collecting mediums, to improve the mineral discharge efficiency. The invention can save water resource and improve the mineral slurry density.
Description
Technical field
The present invention relates to a kind of ore dressing magnetic separator, particularly relate to a kind of high gradient magnetic separator.
Background technology
The proposition of high-gradient magnetic separation theory gives magnetic concentration circle with qualitative leap, and the mineral species that allows to magnetic separation increases, and the granularity upper and lower limit broadens.Early stage high gradient magnetic separator is a periodic, also claims magnetic filter, and this kind equipment is used widely in handling the occasion that magnetic material content is extremely low and granularity is very thin.The continuous high gradient magnetic separator of Chu Xianing has the strong magnetic high gradient magnetic separator of the flat ring type of electromagnetism, permanent magnetism and electromagnetism double-vertical ring high-gradient magnetic separator immediately.The electromagnetism horizontal disk high gradient magnetic separator is owing to give the ore deposit identical with the rinse water direction, so cause machinery to stop up easily, the permanent magnet vertical ring high gradient magnetic separator is owing to the as easy as rolling off a log formation strongly magnetic mineral at the feed port place, the particularly accumulation of iron filings and magnetic takes place stop up, the magnetic separation of electromagnetism vertical ring high-gradient is owing to give the ore deposit opposite with the flow direction of concentrate flushing water in media stack, so being not easy to take place machinery stops up, again owing to be electromagnetism, so when exciting curent does not exist, strongly magnetic mineral and iron filings are easy to come off at the feed port place, and magnetic is stopped up and is not easy to take place.For being mingled with of nonmagnetics in the product that deperms, vibration and pulsating high gradient magnetic separator have appearred, as Chinese patent 86106144.6 disclosed a kind of pulsating high gradient magnetic separators, it can make the richness that is recovered material long-pending than improving, because the panting action of water has reduced mechanical obstruction, its concentrate unloads the ore deposit device and adopts independent water flushing simultaneously.
Improve background magnetic field intensity and prevent the obstruction of magnetizing mediums magnetic for effectively reducing leakage field, Chinese patent 97236795.0 discloses a kind of high field intensity electromagnetic pulsating high gradient magnetic separator, the innovative point of this patent is to increase auxiliary magnetic pole to improve the background field intensity, unload at concentrate and establish the strongly magnetic mineral particle that a demagnetizer is adsorbed on the magnetizing mediums on the separation ring in mining area again and take off magnetic, and they are removed under the effect of concentrate flushing water easily, its concentrate unloads the ore deposit device and adopts the water flushing.
Chinese patent 02114994.1 discloses double-frequency vertical-ring pulsed high-gradient magnetic dressing machine, it adopts unique dipulse device, the fluid dynamic that can produce according to the ore pulp pulsation section different in magnetic separator sorting space with the magnetic force that magnetic field produces makes it effectively be separated to the difference of the different mineral grain group active force of magnetic.The dipulse device can be taken into account concentrate quality and metal recovery rate, can obtain high-grade concentrate, tailings grade is dropped to a certain degree, go back output part chats simultaneously, this equipment is particularly suitable for handling and contains the ore that multi mineral that magnetic do not wait is formed, and also adopts independent water flushing but its concentrate unloads the ore deposit device.
Chinese patent 02134298.9 discloses a kind of double-frequency pulse and double-vertical ring high-gradient magnetic separator, its adopt by the sorting space of left and right magnetic pole and the rotating disk outer rim magnetic conduction part horizontal magnetic force line that forms with can make that the perpendicular double-frequency pulse device of ore pulp generation and magnetic line of force direction combines in this space, the fluid dynamic that can produce according to the ore pulp pulse section different in magnetic separator sorting space with the magnetic force that magnetic field produces is to the difference of the different mineral grain group active force of magnetic, it is efficiently separated, also adopt independent water flushing but its concentrate unloads the ore deposit device.In sum, concentrate unloads the ore deposit and all adopts independent water to wash to carry out concentrate and unload the ore deposit in all these vertical ring high-gradient magnetic separators, because being the rod, the net that adopt multilayer dense, magnetic matrix forms, therefore when flushing, can only adopt the way of big yield to improve it and unload the ore deposit effect, however still have the concentrate of small part to adhere on the magnetic matrix and can not rinse well, and this part concentrate of not rinsing well makes the active surface that occupies magnetic matrix again, makes and unloads ore deposit action effect variation; Adopt a large amount of flushing waters to make the pulp density of its concentrate that is removed become very rare simultaneously, not only waste water resource brings difficulty also for following road operation, does not reach the operation that also must concentrate when requiring in concentration.What most importantly this problem just showed when equipment enlarging is outstanding, the number of plies of the magnetic matrix that is adopted in the main equipment is more, thickness is bigger, and to make concentrate dash totally, except increasing washing water quantity, also need to reduce the separation ring rotating speed, and the reduction of separation ring rotating speed means that the treating capacity of equipment also decreases.
Purpose of the present invention is exactly at the above-mentioned problems in the prior art, and a kind of high gradient magnetic separator is provided, and the disposal ability that it can improve high gradient magnetic separator on the original basis effectively improves the rate of recovery of useful products, has both saved great amount of water resources; Can improve concentrate pulp concentration greatly again, simplify technological process.
Summary of the invention
The objective of the invention is to be achieved through the following technical solutions:
A kind of high gradient magnetic separator, comprise that separation ring and drive unit thereof, mine-feeding equipment, concentrate unload ore deposit device and concentrate gathering-device, wherein separation ring comprises change and is installed on magnetic matrix heap in the change, is positioned at last magnetic pole, lower magnetic pole and the magnetizing coil group of change medial and lateral, its point is that described concentrate unloads the ore deposit device and comprises that the waterpower that is set in parallel in the change outside is unloaded the ore deposit device and wind-force unloads the ore deposit device, and described waterpower is unloaded ore deposit device and wind-force, and to unload the ore deposit device corresponding with the concentrate gathering-device of change inboard respectively.
Wherein above-mentioned waterpower is unloaded the ore deposit device and is comprised water inlet pipe, flushing water filter and at least one mesohigh nozzle, and wherein each mesohigh nozzle faces each magnetic matrix heap respectively.Above-mentioned wind-force unloads the ore deposit device and comprises and lay respectively at two air inlets and at least two mesohigh nozzles that waterpower is unloaded both sides before and after the ore deposit device, and each mesohigh nozzle faces each magnetic matrix heap respectively.
The present invention forms the structure that concentrate unloads the ore deposit device owing to adopt water flushing and wind-force to wash combination, the wind-force flushing that makes full use of mesohigh combines with hydrodynamic cleaning and effectively removes magnetic-particle (concentrate) on each magnetic matrix, both effectively having improved it unloads ore deposit speed and unloads ore deposit efficient, thereby effectively guarantee the recovery utilization rate of mineral products, conserve water resource greatly again, guarantee environmental protection, and can also improve the pulp density of concentrate greatly, simplify the technological process of whole ore dressing, reach purpose of the present invention.
Describe basic composition of the present invention and work operation principle in detail below in conjunction with accompanying drawing:
Description of drawings
Fig. 1 is that stereochemical structure of the present invention is formed schematic diagram;
Fig. 2 is that planar structure of the present invention is formed schematic diagram;
Fig. 3 is an operation principle schematic diagram of the present invention.
The specific embodiment
As Fig. 1～shown in Figure 3, a kind of high gradient magnetic separator of the present invention, comprise separation ring and drive unit thereof, mine-feeding equipment 7, concentrate unloads ore deposit device 6 and concentrate gathering-device 8, wherein separation ring comprises change 5 and is installed on magnetic matrix heap 2 in the change 5, be positioned at change 5, the last magnetic pole 3 in the outside, lower magnetic pole 4 and magnetizing coil group 1, wherein change 5 is vertical twin nuclei, interannular is provided with the rotating disk that dicyclo is connected as one, the axle sleeve that bearing is housed is set in the rotating disk, above-mentioned ring body is divided into the identical space of some volumes by some dividing plates, the magnetic matrix heap then is fixed in the corresponding space, above-mentioned magnetic matrix heap 2 is excellent medium, and this rod medium is to be fixed on the stainless sheet steel according to certain rules by thousands of magnetic stainless steel poles.The rod medium detachably cleans, and medium is reusable.Magnetic matrix is formed by the good materials processing of magnetic property, and magnetic matrix can be assembled the magnetic line of force in magnetic field, therefore can form the very high magnetic field of gradient on its surface, and magnetic field force is to be directly proportional with magnetic field intensity and magnetic field gradient.The magnetic matrix surface can form very high magnetic field force in magnetic field, can reclaim the very weak mineral of magnetic, and the big more magnetic field gradient of the surface curvature of magnetic matrix is high more, and the effect that reclaims the fine weak magnetic mineral of granularity is good more.Described concentrate unloads ore deposit device 6 and comprises that the parallel waterpower that is arranged at change 5 outsides is unloaded ore deposit device 61 and wind-force unloads ore deposit device 62, and described waterpower is unloaded ore deposit device 61 and wind-force, and to unload ore deposit device 62 corresponding with the concentrate gathering-device 8 of change 5 inboards respectively.Wherein above-mentioned waterpower is unloaded ore deposit device 61 and is comprised water inlet pipe, flushing water filter and at least one mesohigh nozzle, and wherein each mesohigh nozzle faces each magnetic matrix heap 2 respectively.Above-mentioned wind-force unloads ore deposit device 62 and comprises that laying respectively at waterpower unloads ore deposit device 61 front and back promptly along two air inlets and at least two mesohigh nozzles of the both sides, front and back position place of change 5 rotation directions, and each mesohigh nozzle faces each magnetic matrix heap 2 respectively.
The course of work of the present invention and principle are as follows:
When magnetizing coil 1 feeds the direct current of big electric current, form the very high magnetic field of intensity in the sorting space, magnetic matrix heap 2 surfaces can form very high magnetic field force in the magnetic field.Separation ring counterclockwise rotates, and its underpart all is full of the magnetic matrix heap by the arc sorting space that last magnetic pole 3 and lower magnetic pole 4 form in each the sorting cell on the separation ring.
When ore pulp evenly and lentamente enters the sorting space by mine feeding bucket 7, because magnetic field force effect, the magnetic mineral particle is attracted on the magnetic matrix surface, on the magnetic matrix surface, continued to rotate by firm suction with separation ring, break away from magnetic field gradually, enter magnetic product and unload the mining area, because magnetic field is very weak in this zone, with the concentrate flushing water that filters through the flushing water filter and compressed air magnetic product is washed and enters concentrate bucket 8 from magnetic matrix surface upper punch, be magnetic product.Thereby the different particle swarm of magnetic is effectively separated.
Claims (3)
1, a kind of high gradient magnetic separator, comprise separation ring and drive unit thereof, mine-feeding equipment (7), concentrate unloads ore deposit device (6) and concentrate gathering-device (8), wherein separation ring comprises change (5) and is installed on magnetic matrix heap (2) in the change (5), be positioned at change (5), the last magnetic pole (3) in the outside, lower magnetic pole (4) and magnetizing coil group (1), it is characterized in that described concentrate unloads ore deposit device (6) and comprises that the waterpower that is set in parallel in change (5) outside is unloaded ore deposit device (61) and wind-force unloads ore deposit device (62), and described waterpower is unloaded ore deposit device (61) and wind-force, and to unload ore deposit device (62) corresponding with the concentrate gathering-device (8) of change (5) inboard respectively.
2, High-gradient Magnetic magnetic separator according to claim 1 is characterized in that above-mentioned waterpower unloads ore deposit device (61) and comprise water inlet pipe, flushing water filter and at least one mesohigh nozzle, and wherein each mesohigh nozzle faces each magnetic matrix heap (2) respectively.
3, High-gradient Magnetic magnetic separator according to claim 1 and 2, it is characterized in that above-mentioned wind-force unloads ore deposit device (62) and comprises and lay respectively at two air inlets and at least two mesohigh nozzles that waterpower is unloaded both sides before and after the ore deposit device (61), and each mesohigh nozzle faces each magnetic matrix heap (2) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101324323A CN100566842C (en) | 2006-12-30 | 2006-12-30 | A kind of high gradient magnetic separator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101324323A CN100566842C (en) | 2006-12-30 | 2006-12-30 | A kind of high gradient magnetic separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1994578A true CN1994578A (en) | 2007-07-11 |
| CN100566842C CN100566842C (en) | 2009-12-09 |
Family
ID=38249829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101324323A Expired - Fee Related CN100566842C (en) | 2006-12-30 | 2006-12-30 | A kind of high gradient magnetic separator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100566842C (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011103803A1 (en) * | 2010-02-23 | 2011-09-01 | 中国神华能源股份有限公司 | Vertical ring magnetic separator for de-ironing of pulverized coal ash and method using the same |
| CN103071586A (en) * | 2013-02-20 | 2013-05-01 | 周洪辉 | High-gradient electric permanent magnetic separator |
| CN103191830A (en) * | 2013-04-11 | 2013-07-10 | 成都利君实业股份有限公司 | Fluidized magnetic medium dry magnetic separator and magnetic separation method thereof |
| CN103240177A (en) * | 2013-04-28 | 2013-08-14 | 广州有色金属研究院 | Separating ring of high-gradient magnetic separator |
| CN104029946A (en) * | 2014-06-04 | 2014-09-10 | 马鞍山市天工科技有限公司 | Unblocking device for V groove-shaped integrated reinforced concrete feed bins |
| CN107282291A (en) * | 2017-07-27 | 2017-10-24 | 张佩佩 | A kind of high gradient tramp iron separator |
| CN107350076A (en) * | 2017-08-31 | 2017-11-17 | 沈阳隆基电磁科技股份有限公司 | A kind of device and method for improving magnetic induction medium and unloading ore deposit efficiency |
| CN107470019A (en) * | 2017-08-03 | 2017-12-15 | 沈阳隆基电磁科技股份有限公司 | A kind of method that ore deposit efficiency is unloaded in Verticle ring high intensity magnetic separator and its raising |
| CN107597419A (en) * | 2017-09-15 | 2018-01-19 | 广东省资源综合利用研究所 | It is a kind of to sort and unload the good blending agent box of ore deposit effect |
| CN108262159A (en) * | 2017-02-24 | 2018-07-10 | 沈阳隆基电磁科技股份有限公司 | A kind of wet method High gradient high intensity magnetic separator |
| CN108499727A (en) * | 2018-04-19 | 2018-09-07 | 广东省资源综合利用研究所 | A kind of horizontal magnetic field vertical ring high-gradient magnetic separator |
| CN110142136A (en) * | 2019-06-24 | 2019-08-20 | 纪礽辉 | A kind of permanent magnet high gradient magnetic separator |
| CN110605180A (en) * | 2019-10-16 | 2019-12-24 | 中南大学 | Combined vertical ring suspension disturbance high-gradient magnetic separator and mineral separation method using same |
| WO2022099394A1 (en) * | 2020-11-16 | 2022-05-19 | Vale S.A. | Method and system for removing iron ore particles adhering by magnetic hysteresis to a magnetic matrix of a vertical magnetic separator |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2064343C1 (en) * | 1987-10-23 | 1996-07-27 | Государственный проектно-конструкторский институт обогатительного оборудования "Гипромашобогащение" | Separator |
| JP2553925B2 (en) * | 1988-12-22 | 1996-11-13 | 日本磁力選鉱株式会社 | Wet magnetic force sorting method |
| SU1613171A1 (en) * | 1989-01-03 | 1990-12-15 | Государственный Проектно-Конструкторский И Экспериментальный Институт По Обогатительному Оборудованию "Гипромашобогащение" | Electromagnetic separator |
| CN201020404Y (en) * | 2006-12-30 | 2008-02-13 | 广州有色金属研究院 | High gradient magnetic separator |
-
2006
- 2006-12-30 CN CNB2006101324323A patent/CN100566842C/en not_active Expired - Fee Related
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011103803A1 (en) * | 2010-02-23 | 2011-09-01 | 中国神华能源股份有限公司 | Vertical ring magnetic separator for de-ironing of pulverized coal ash and method using the same |
| US8505735B2 (en) | 2010-02-23 | 2013-08-13 | China Shenhua Energy Company Limited | Vertical ring magnetic separator for de-ironing of pulverized coal ash and method using the same |
| CN103071586A (en) * | 2013-02-20 | 2013-05-01 | 周洪辉 | High-gradient electric permanent magnetic separator |
| CN103191830A (en) * | 2013-04-11 | 2013-07-10 | 成都利君实业股份有限公司 | Fluidized magnetic medium dry magnetic separator and magnetic separation method thereof |
| CN103191830B (en) * | 2013-04-11 | 2016-02-03 | 成都利君实业股份有限公司 | A kind of fluidization magnetizing mediums dry-type magnetic extractor and magnetic selection method thereof |
| CN103240177A (en) * | 2013-04-28 | 2013-08-14 | 广州有色金属研究院 | Separating ring of high-gradient magnetic separator |
| CN104029946A (en) * | 2014-06-04 | 2014-09-10 | 马鞍山市天工科技有限公司 | Unblocking device for V groove-shaped integrated reinforced concrete feed bins |
| CN108262161A (en) * | 2017-02-24 | 2018-07-10 | 沈阳隆基电磁科技股份有限公司 | A kind of wet method High gradient high intensity magnetic separator |
| CN108262159A (en) * | 2017-02-24 | 2018-07-10 | 沈阳隆基电磁科技股份有限公司 | A kind of wet method High gradient high intensity magnetic separator |
| CN108262160A (en) * | 2017-02-24 | 2018-07-10 | 沈阳隆基电磁科技股份有限公司 | A kind of wet method High gradient high intensity magnetic separator |
| CN108262161B (en) * | 2017-02-24 | 2024-04-02 | 沈阳隆基电磁科技股份有限公司 | Wet process high gradient strong magnetic separator |
| CN108262160B (en) * | 2017-02-24 | 2024-02-20 | 沈阳隆基电磁科技股份有限公司 | Wet process high gradient strong magnetic separator |
| CN108262159B (en) * | 2017-02-24 | 2024-02-20 | 沈阳隆基电磁科技股份有限公司 | Wet process high gradient strong magnetic separator |
| CN107282291A (en) * | 2017-07-27 | 2017-10-24 | 张佩佩 | A kind of high gradient tramp iron separator |
| CN107282291B (en) * | 2017-07-27 | 2019-04-02 | 张佩佩 | A kind of high gradient iron remover |
| CN107470019B (en) * | 2017-08-03 | 2023-10-10 | 沈阳隆基电磁科技股份有限公司 | Vertical ring strong magnetic separator and method for improving ore discharging efficiency thereof |
| CN107470019A (en) * | 2017-08-03 | 2017-12-15 | 沈阳隆基电磁科技股份有限公司 | A kind of method that ore deposit efficiency is unloaded in Verticle ring high intensity magnetic separator and its raising |
| CN107350076A (en) * | 2017-08-31 | 2017-11-17 | 沈阳隆基电磁科技股份有限公司 | A kind of device and method for improving magnetic induction medium and unloading ore deposit efficiency |
| CN107597419A (en) * | 2017-09-15 | 2018-01-19 | 广东省资源综合利用研究所 | It is a kind of to sort and unload the good blending agent box of ore deposit effect |
| CN108499727B (en) * | 2018-04-19 | 2023-11-24 | 广东省资源综合利用研究所 | Horizontal magnetic field vertical ring high gradient magnetic separator |
| CN108499727A (en) * | 2018-04-19 | 2018-09-07 | 广东省资源综合利用研究所 | A kind of horizontal magnetic field vertical ring high-gradient magnetic separator |
| CN110142136A (en) * | 2019-06-24 | 2019-08-20 | 纪礽辉 | A kind of permanent magnet high gradient magnetic separator |
| CN110605180A (en) * | 2019-10-16 | 2019-12-24 | 中南大学 | Combined vertical ring suspension disturbance high-gradient magnetic separator and mineral separation method using same |
| WO2022099394A1 (en) * | 2020-11-16 | 2022-05-19 | Vale S.A. | Method and system for removing iron ore particles adhering by magnetic hysteresis to a magnetic matrix of a vertical magnetic separator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100566842C (en) | 2009-12-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100566842C (en) | A kind of high gradient magnetic separator | |
| CN101722102B (en) | Oblique-ring high-gradient magnetic separator | |
| CN201020404Y (en) | High gradient magnetic separator | |
| CN111085334B (en) | Method for recycling waste power batteries by gravity separation method and jigging equipment | |
| CN103041916A (en) | Magnetic separator | |
| CN101559405B (en) | High-efficiency permanent magnet drum magnetic separator | |
| CN109761396A (en) | A kind of shield dregs processing method and equipment | |
| CN102319625A (en) | High-efficiency down-flow type magnetic separator with groove body | |
| CN101402068B (en) | High-gradient magnetic separation machine | |
| CN202527267U (en) | Wet stirring type cylinder magnetic separator | |
| CN210935390U (en) | Magnetic separator for fine iron powder concentration | |
| CN103191830A (en) | Fluidized magnetic medium dry magnetic separator and magnetic separation method thereof | |
| CN101402067B (en) | High-gradient magnetic separation machine | |
| CN1370627A (en) | Double-frequency vertical-ring pulsed high-gradient magnetic dressing machine | |
| CN108452943B (en) | Permanent magnet induction type high-gradient magnetic disk machine | |
| CN201442879U (en) | Dual-magnetic waste water separating and filtering device | |
| CN203946988U (en) | A kind for the treatment of system of sandstone aggregate utilization of wastewater resource | |
| CN108972134A (en) | A kind of platen of efficient chip removal | |
| CN209997779U (en) | simple and efficient garbage power plant slag treatment system | |
| CN103240177A (en) | Separating ring of high-gradient magnetic separator | |
| CN103011350B (en) | Annular disc liquid purification device | |
| CN212943468U (en) | Efficiency that improves ore pulp rotation rate desliming dewatering tank | |
| CN201295638Y (en) | High gradient magnetic separator | |
| CN208933736U (en) | A kind of circulation slag removing system of rice paper latex | |
| CN202741238U (en) | Semi-magnetic self-discharging tailings recovery machine with middle field strength |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180207 Address after: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No. Patentee after: GUANGDONG INSTITUTE OF RESOURCES COMPREHENSIVE UTILIZATION Address before: 510651 Changxin Road, Guangzhou, Guangdong, No. 363, No. Patentee before: Guangzhou Research Institute of Non-ferrous Metals |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091209 Termination date: 20191230 |