CN203899564U - Oil field fracturing propping agent granulating system - Google Patents
Oil field fracturing propping agent granulating system Download PDFInfo
- Publication number
- CN203899564U CN203899564U CN201420352943.6U CN201420352943U CN203899564U CN 203899564 U CN203899564 U CN 203899564U CN 201420352943 U CN201420352943 U CN 201420352943U CN 203899564 U CN203899564 U CN 203899564U
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- China
- Prior art keywords
- propping agent
- spray drying
- conveyer
- granulating system
- fracturing propping
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- 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.)
- Expired - Lifetime
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- 239000000463 material Substances 0.000 claims abstract description 56
- 239000000843 powder Substances 0.000 claims abstract description 52
- 238000001694 spray drying Methods 0.000 claims abstract description 30
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 239000011265 semifinished product Substances 0.000 claims abstract description 19
- 238000005469 granulation Methods 0.000 claims abstract description 10
- 230000003179 granulation Effects 0.000 claims abstract description 10
- 238000012216 screening Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000007921 spray Substances 0.000 claims description 15
- 238000007599 discharging Methods 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 8
- 230000033001 locomotion Effects 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 238000009955 starching Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000047 product Substances 0.000 abstract description 5
- 239000008187 granular material Substances 0.000 abstract description 4
- 230000006911 nucleation Effects 0.000 abstract description 3
- 238000010899 nucleation Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 11
- 239000002245 particle Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
Landscapes
- Glanulating (AREA)
Abstract
The utility model relates to an oil field fracturing propping agent granulating system which comprises spray drying nucleation equipment, powder material wrapping equipment and a conveyer, wherein the spray drying nucleation equipment comprises a spray drying tower, a drum screen and a belt conveyor; the drum screen is provided with a feed opening, a screening drum and a plurality of discharge openings; the material outlet of the spray drying tower is connected with the feed opening of the drum screen; materials slidably go forward in the screening drum, the materials with different granule size ranges are screened to respective discharge openings and conveyed to the belt conveyer, the screened materials are sequentially conveyed to a conveying pipe through the belt conveyer to enter the powder material wrapping equipment and are compactly wrapped and rolled with powder materials so as to obtain propping agent semi-finished products; the propping agent semi-finished products are conveyed by the conveyer to be baked, so that the granulation is completed. The oil field fracturing propping agent granulating system provided by the utility model is capable of firstly screening raw materials with different granule sizes and has the advantages of uniformity in produced product quality, automation in operation and continuity in production.
Description
Technical field
The utility model relates to prilling granulator field, relates in particular to a kind of oil-filed fracturing propping agent granulating system.
Background technology
Fracturing propping agents are a kind of ceramic particle products, have very high pressure break intensity, are mainly used in oil field well and support, and to increase the output of petroleum gas, belong to environment-friendly products.When petroleum gas deep mining, high clossing pressure deposits of low permeability, after frac treatment, splits Oil gas-containing rock layer, the passage that oil gas forms from crack, collects.Enter Filling in rock crack in company with high-pressure solution with haydite backing material, play support crack not stress discharge and closed effect, thereby keep high flow conductivity, make oil gas unimpeded, increase output.
Proppant granulation is a vital step in proppant preparation technology, and prilling has important impact to product sphericity, packing etc.The prilling of existing fracturing propping agents has multiple, and wherein most widely used is disc granulation method, and granulating disc is made up of cylinder, main shaft, transmission mechanism, motor conventionally.In granulation process, motor drives cylinder to rotate by main shaft, and powder rolls up and down, sheds in cylinder, and absorbs water smoke and form gradually fine particle, and particle is real by further rolling after constantly growing up, sieve and obtain ceramsite propping agent semi-finished product.The interpolation of powder is by manually adding, and adding before powder, in order not increase workman's labour intensity, can not carry out the screening of different grain size size to powder, this kind of method equipment and process is simple, and short-term drops into low, but its preparation technology is difficult for accurately controlling, product quality fluctuation is large, the granulation cycle is long, and proppant particle size distribution range is wide, qualification rate is low, and labor strength is larger, operating efficiency is lower, is unfavorable for serialization production.
Utility model content
The purpose of this utility model is to propose a kind of oil-filed fracturing propping agent granulating system that the raw material of different grain size size is first sieved, the uniform in quality of producing, and automation mechanized operation, can be continuously produced.
For reaching this object, the utility model by the following technical solutions:
A kind of oil-filed fracturing propping agent granulating system, comprises and is spray dried to nuclear equipment, parcel powder equipment and conveyer, described in be spray dried to nuclear equipment by carrying and described parcel powder equipment connection;
The described nuclear equipment that is spray dried to comprises spray drying tower, rotary screen and ribbon conveyer, and described rotary screen is provided with charging aperture and sifting barrel, and multiple discharging opening, and the material outlet of described spray drying tower connects the charging aperture of described rotary screen;
Described sifting barrel forms by being no less than the two-layer screen cloth with sieve aperture inside and outside arranging, the aperture of described sieve aperture reduces step by step from internal layer to skin, material skid in described sifting barrel advances, and some materials of different grain size scope are sized described discharging opening separately and deliver to described ribbon conveyer;
Material after screening is transported to described carrier pipe by described ribbon conveyer in order and enters described parcel powder equipment and powder parcel and roll the reality agent semi-finished product that are supported, described proppant semi-finished product are fallen described conveyer from the feed opening of described parcel powder equipment, and described conveyer is sent to described proppant semi-finished product to have burnt till granulation.
Preferably, described parcel powder equipment comprises spherical pot body, feed arrangement and water injector;
One end outwardly of described spherical pot body is provided with feeding mouth, described spherical pot body is by Motor Drive, the bottom of described spherical pot body arranges discharge gate, the mixing of materials that powder obtains with spraying in described feed arrangement enters described spherical pot body, described water injector provides water source in described spherical pot body, and powder and material absorption water smoke are grown up gradually and formed proppant semi-finished product.
Preferably, described feed arrangement comprises pipe and the conveyance conduit being connected with described pipe, described feed arrangement by powder in described pipe is transported to described conveyance conduit, in described conveyance conduit enters into described spherical pot body.
Preferably, described water injector is Water sprayer.
Preferably, described motor is constant speed motor.
Preferably, described spray drying tower is provided with hot air supplier, supplies slurry atomising device, air exhausting device and material outlet, the tower top that enters tower air port and be arranged at described spray drying tower of described hot air supplier, middle part in the described body that is arranged on described spray drying tower for slurry atomising device, described air exhausting device is arranged on the sidewall of middle and lower part of described spray drying tower, and described material outlet is arranged on the bottom of described spray drying tower.
Preferably, the middle part in the described body that is arranged on described spray drying tower for the atomizer of starching atomising device upward.
Preferably, described ribbon conveyer be belt continuously or intermittent movement.
Preferably, described conveyer is belt type conveyer.
Preferably, described discharging opening is hopper construction.
The beneficial effects of the utility model: 1, the material before parcel has been sized and has entered in order in parcel powder equipment, makes the half-finished particle size of proppant consistent, and performance is more stable, quality good; 2, completed by machinery, reduced workman's labour intensity, submitted production efficiency to, be convenient to mass, serialization production; 3, pot body adopts spherical structure, and parcel effect is better, and particle diameter is more even, and sphericity and circularity are also improved.
Brief description of the drawings
Fig. 1 is the structural representation of an embodiment of the present utility model;
Fig. 2 is the cross-sectional view of rotary screen and the ribbon conveyer of an embodiment of the present utility model.
Wherein: be spray dried to nuclear equipment 1, parcel powder equipment 2, carrier pipe 3, conveyer 4, spray drying tower 11, rotary screen 12, ribbon conveyer 13, charging aperture 121, sifting barrel 122, discharging opening 123, spherical pot body 21, feed arrangement 22, water injector 23, feed opening 24, conveyance conduit 221, pipe 222, hot air supplier 111, for slurry atomising device 112, air exhausting device 113, material outlet 114.
Detailed description of the invention
Further illustrate the technical solution of the utility model below in conjunction with accompanying drawing and by detailed description of the invention.
A kind of oil-filed fracturing propping agent granulating system, comprises and is spray dried to nuclear equipment 1, parcel powder equipment 2 and conveyer 4, described in be spray dried to nuclear equipment 1 and be connected with described parcel powder equipment 2 by carrier pipe 3;
The described nuclear equipment 1 that is spray dried to comprises spray drying tower 11, rotary screen 12 and ribbon conveyer 13, described rotary screen 12 is provided with charging aperture 121 and sifting barrel 122, and multiple discharging openings 123, the material outlet of described spray drying tower 11 connects the charging aperture 121 of described rotary screen 12;
Described sifting barrel 122 forms by being no less than the two-layer screen cloth with sieve aperture inside and outside arranging, the aperture of described sieve aperture reduces step by step from internal layer to skin, material advances at the interior skid of described sifting barrel 122, and some materials of different grain size scope are sized described discharging opening 123 separately and deliver to described ribbon conveyer 13;
Material after screening is transported to described carrier pipe 3 by described ribbon conveyer 13 in order and enters described parcel powder equipment 2 and roll the real agent semi-finished product that are supported with powder parcel, described proppant semi-finished product are fallen described conveyer 4 from the feed opening 24 of described parcel powder equipment 2, and described conveyer 4 is sent to described proppant semi-finished product to have burnt till granulation.
The spray-dried tower dry acquisition of 11 spraying of mud pulverous material not of uniform size, material not of uniform size is through the effect of the sifting barrel 122 of rotary screen 12, as shown in Figure 2, sifting barrel 122 forms by being no less than the two-layer screen cloth with sieve aperture inside and outside arranging, the aperture of described sieve aperture reduces step by step from internal layer to skin, material advances at the interior skid of sifting barrel 122, the material of different grain size size is sized in discharging opening 123 separately and drops into the corresponding different position of ribbon conveyer 13, material after screening is transported to carrier pipe 3 by ribbon conveyer 13 in order and enters parcel powder equipment 2 and roll reality with powder parcel.The material of same granule size enters parcel powder equipment 2 and rolls the real proppant semi-finished product that form with powder parcel under the conveying of ribbon conveyer 13, reach after requirement Deng the half-finished particle diameter of 90% proppant in parcel powder equipment 2, close the power supply that drives parcel powder equipment 2, proppant semi-finished product are fallen on conveyer 4 through the feed opening 24 of parcel powder equipment 2, be transferred and burnt till after granulation, the material of another kind of granule size enters parcel powder equipment 2 and repeats above-mentioned granulation process under the conveying of ribbon conveyer 13.
The proppant semi-finished product that utilize this equipment to prepare, material before parcel has been sized and has entered in order in parcel powder equipment, makes the half-finished particle size of proppant consistent, and performance is more stable, quality good, the molding time of particle shortens, and the intensity of the proppant after burning till improves 10%.In addition, the nucleation process of the utility model oil-filed fracturing propping agent granulating system, reinforced process, spray process, blanking process are all to be completed by machinery, have reduced workman's labour intensity, have submitted production efficiency to, are convenient to mass, serialization production.
Preferably, described parcel powder equipment 2 comprises spherical pot body 21, feed arrangement 22 and water injector 23;
One end outwardly of described spherical pot body 21 is provided with feeding mouth, described spherical pot body 21 is by Motor Drive, the bottom of described spherical pot body 21 arranges discharge gate, the mixing of materials that powder obtains with spraying in described feed arrangement 22 enters described spherical pot body 21, described water injector 23 provides water source in described spherical pot body 21, and powder and material absorption water smoke are grown up gradually and formed proppant semi-finished product.
As shown in Figure 1, the spherical pot body 21 that parcel powder equipment 2 arranges, pot body rotates under Motor Drive, pot body adopts spherical structure, make the motion path of its rotation of material of rotating with pot body all consistent, and be level and smooth arc surface with the contact-making surface of pot body, the parcel effect of powder is better, the proppant semi-finished product particle diameter forming is more even, and sphericity and circularity are also improved greatly.Inside is provided with feed arrangement 22 and water injector 23, and reinforced process and water spray process are also completed by machinery, reduce workman's labour intensity, increase work efficiency.
Preferably, described feed arrangement 22 comprises conveyance conduit 221 and the pipe 222 being connected with described conveyance conduit 221, described feed arrangement 22 by powder in described conveyance conduit 222 is transported to described conveyance conduit 221, in described conveyance conduit 221 enters into described spherical pot body 21.Powder can enter conveyance conduit 221 through pipe 222, and drops in spherical pot body 21, realizes powder automatic transport, saves the operation manually adding materials, and makes more automation of equipment.
Preferably, described water injector 23 is Water sprayer.Water sprayer sprays the spray water that drop diameter is less than 1 micron, can greatly improve the contact area of the mixture of water and material and powder, improves the absorption speed of material and powder, thereby shortening forming time shortens the time that is about 20%.
Preferably, described motor is constant speed motor.Spherical pot body 21 is driven by constant speed motor, guarantees the rotation at the uniform velocity of spherical pot body 21, makes pot speed that interior mixture rotates consistent, and interaction force is in the same size, and the proppant semi-manufactured goods quality obtaining is better.
Preferably, described spray drying tower 11 is provided with hot air supplier 111, supplies slurry atomising device 112, air exhausting device 113 and material outlet 114, the tower top that enters tower air port and be arranged at described spray drying tower 11 of described hot air supplier 111, middle part in the described body that is arranged on described spray drying tower 11 for slurry atomising device 112, described air exhausting device 113 is arranged on the sidewall of middle and lower part of described spray drying tower 11, and described material outlet 114 is arranged on the bottom of described spray drying tower 11.The high-temperature hot-air of hot air supplier 111 is concentrated and is entered from the tower top of spray drying tower 11, mud by for slurry atomising device 112 single supervisor spray to tower top direction, first mud contact with high-temperature hot-air, then with the wind and under, progressively experience low temperature hot blast, finally discharge material by material outlet 114.
Preferably, the middle part in the described body that is arranged on described spray drying tower 11 for the atomizer of starching atomising device 112 upward.The atomizer arranging upward makes mud to tower top direction ejection, and mud first contacts with high-temperature hot-air, then with the wind and under, progressively experience low temperature hot blast, finally discharged by material outlet, dry materials is obtained more thorough, reduce the wall sticking phenomenon in tower, improve the output capacity of powder material.
Preferably, described ribbon conveyer 13 be belt continuously or intermittent movement.Belt transmission structure is simple, is easy to safeguard, be applicable to carrying out easily automation mechanized operation, its continuously or intermittent movement can arrange according to the particle size range of material.
Preferably, described conveyer 4 is belt type conveyer.Belt type conveyer is for delivery of powdery or granular article, operates steadily, noise is low, be conveyer 4 preferably.
Preferably, described discharging opening 123 is hopper construction.As shown in Figure 2, the discharging opening 123 of hopper construction can play collecting action together to the material sieving, make the material having sieved in the time dropping on ribbon conveyer 13, can pile up in heaps, not at random falling into, what make that the material that sieved can better distinguish the material of different grain size size dropping on ribbon conveyer 13.
Know-why of the present utility model has below been described in conjunction with specific embodiments.These are described is in order to explain principle of the present utility model, and can not be interpreted as by any way the restriction to the utility model protection domain.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other detailed description of the invention of the present utility model, within these modes all will fall into protection domain of the present utility model.
Claims (10)
1. an oil-filed fracturing propping agent granulating system, is characterized in that: comprise and be spray dried to nuclear equipment, parcel powder equipment and conveyer, described in be spray dried to nuclear equipment by carrying and described parcel powder equipment connection;
The described nuclear equipment that is spray dried to comprises spray drying tower, rotary screen and ribbon conveyer, and described rotary screen is provided with charging aperture and sifting barrel, and multiple discharging opening, and the material outlet of described spray drying tower connects the charging aperture of described rotary screen;
Described sifting barrel forms by being no less than the two-layer screen cloth with sieve aperture inside and outside arranging, the aperture of described sieve aperture reduces step by step from internal layer to skin, material skid in described sifting barrel advances, and some materials of different grain size scope are sized described discharging opening separately and deliver to described ribbon conveyer;
Material after screening is transported to described carrier pipe by described ribbon conveyer in order and enters described parcel powder equipment and powder parcel and roll the reality agent semi-finished product that are supported, described proppant semi-finished product are fallen described conveyer from the feed opening of described parcel powder equipment, and described conveyer is sent to described proppant semi-finished product to have burnt till granulation.
2. oil-filed fracturing propping agent granulating system according to claim 1, is characterized in that: described parcel powder equipment comprises spherical pot body, feed arrangement and water injector;
One end outwardly of described spherical pot body is provided with feeding mouth, described spherical pot body is by Motor Drive, the bottom of described spherical pot body arranges discharge gate, the mixing of materials that powder obtains with spraying in described feed arrangement enters described spherical pot body, described water injector provides water source in described spherical pot body, and powder and material absorption water smoke are grown up gradually and formed proppant semi-finished product.
3. oil-filed fracturing propping agent granulating system according to claim 2, it is characterized in that: described feed arrangement comprises pipe and the conveyance conduit being connected with described pipe, described feed arrangement by powder in described pipe is transported to described conveyance conduit, in described conveyance conduit enters into described spherical pot body.
4. oil-filed fracturing propping agent granulating system according to claim 2, is characterized in that: described water injector is Water sprayer.
5. oil-filed fracturing propping agent granulating system according to claim 2, is characterized in that: described motor is constant speed motor.
6. oil-filed fracturing propping agent granulating system according to claim 1, it is characterized in that: described spray drying tower is provided with hot air supplier, supplies slurry atomising device, air exhausting device and material outlet, the tower top that enters tower air port and be arranged at described spray drying tower of described hot air supplier, middle part in the described body that is arranged on described spray drying tower for slurry atomising device, described air exhausting device is arranged on the sidewall of middle and lower part of described spray drying tower, and described material outlet is arranged on the bottom of described spray drying tower.
7. oil-filed fracturing propping agent granulating system according to claim 6, is characterized in that: the middle part in the described body that is arranged on described spray drying tower for the atomizer of starching atomising device upward.
8. oil-filed fracturing propping agent granulating system according to claim 1, is characterized in that: described ribbon conveyer be belt continuously or intermittent movement.
9. oil-filed fracturing propping agent granulating system according to claim 1, is characterized in that: described conveyer is belt type conveyer.
10. oil-filed fracturing propping agent granulating system according to claim 1, is characterized in that: described discharging opening is hopper construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420352943.6U CN203899564U (en) | 2014-06-27 | 2014-06-27 | Oil field fracturing propping agent granulating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420352943.6U CN203899564U (en) | 2014-06-27 | 2014-06-27 | Oil field fracturing propping agent granulating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203899564U true CN203899564U (en) | 2014-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420352943.6U Expired - Lifetime CN203899564U (en) | 2014-06-27 | 2014-06-27 | Oil field fracturing propping agent granulating system |
Country Status (1)
| Country | Link |
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| CN (1) | CN203899564U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105818300A (en) * | 2016-05-20 | 2016-08-03 | 尹凤福 | Infrared recognizing and sorting equipment for mixed plastic |
| CN108997997A (en) * | 2018-09-18 | 2018-12-14 | 湖北武洲新材料科技有限公司 | A kind of production equipment for the ceramsite propping agent adding aluminium dihydrogen phosphate |
| CN111558517A (en) * | 2020-05-18 | 2020-08-21 | 大庆油田有限责任公司 | Polymerization proppant automatic lifting dry-wet screening device and method |
| CN112387211A (en) * | 2020-10-29 | 2021-02-23 | 西北农林科技大学 | Method and device for mixing and granulating thick slurry and dry powder |
| CN115888283A (en) * | 2022-12-23 | 2023-04-04 | 河南郑耐新材料有限公司 | A dust control process in a ceramsite proppant production workshop |
-
2014
- 2014-06-27 CN CN201420352943.6U patent/CN203899564U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105818300A (en) * | 2016-05-20 | 2016-08-03 | 尹凤福 | Infrared recognizing and sorting equipment for mixed plastic |
| CN105818300B (en) * | 2016-05-20 | 2018-08-21 | 青岛科技大学 | Mixed plastic infrared identification screening installation |
| CN108997997A (en) * | 2018-09-18 | 2018-12-14 | 湖北武洲新材料科技有限公司 | A kind of production equipment for the ceramsite propping agent adding aluminium dihydrogen phosphate |
| CN111558517A (en) * | 2020-05-18 | 2020-08-21 | 大庆油田有限责任公司 | Polymerization proppant automatic lifting dry-wet screening device and method |
| CN112387211A (en) * | 2020-10-29 | 2021-02-23 | 西北农林科技大学 | Method and device for mixing and granulating thick slurry and dry powder |
| CN112387211B (en) * | 2020-10-29 | 2022-06-14 | 西北农林科技大学 | Method and device for mixing and granulating thick slurry and dry powder |
| CN115888283A (en) * | 2022-12-23 | 2023-04-04 | 河南郑耐新材料有限公司 | A dust control process in a ceramsite proppant production workshop |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170417 Address after: 528031 Chancheng, Foshan District, Jiangwan, No. three, No., layer 8, layer two Co-patentee after: GUANGDONG DONGPENG HOLDINGS Co.,Ltd. Patentee after: FOSHAN DONGPENG CERAMIC Co.,Ltd. Co-patentee after: QINGYUAN NAFUNA CERAMICS Co.,Ltd. Address before: Chancheng District of Jiangwan city of Foshan province Guangdong three road 528031 No. 8 two Foshan city Eastroc Ceramics Co. Ltd Co-patentee before: GUANGDONG DONGPENG HOLDINGS Co.,Ltd. Patentee before: FOSHAN DONGPENG CERAMIC Co.,Ltd. Co-patentee before: QINGYUAN NAFUNA CERAMICS Co.,Ltd. Co-patentee before: Guangdong Dongpeng Ceramic Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141029 |