CN105563694A - Wind power blade recovery treatment method - Google Patents
Wind power blade recovery treatment method Download PDFInfo
- Publication number
- CN105563694A CN105563694A CN201610104746.6A CN201610104746A CN105563694A CN 105563694 A CN105563694 A CN 105563694A CN 201610104746 A CN201610104746 A CN 201610104746A CN 105563694 A CN105563694 A CN 105563694A
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- CN
- China
- Prior art keywords
- particle
- treatment method
- vanes block
- time
- light material
- Prior art date
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- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000011084 recovery Methods 0.000 title claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 100
- 239000000463 material Substances 0.000 claims abstract description 52
- 239000011347 resin Substances 0.000 claims abstract description 26
- 229920005989 resin Polymers 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 10
- 239000011521 glass Substances 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 17
- 239000000428 dust Substances 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 10
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 4
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 claims description 3
- 239000006148 magnetic separator Substances 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 5
- 239000003365 glass fiber Substances 0.000 abstract description 4
- 239000002969 artificial stone Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012779 reinforcing material Substances 0.000 description 3
- -1 Ba Shamu Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000011465 paving brick Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0217—Mechanical separating techniques; devices therefor
- B29B2017/0237—Mechanical separating techniques; devices therefor using density difference
- B29B2017/0241—Mechanical separating techniques; devices therefor using density difference in gas, e.g. air flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B2017/0424—Specific disintegrating techniques; devices therefor
- B29B2017/044—Knives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B2017/0424—Specific disintegrating techniques; devices therefor
- B29B2017/0468—Crushing, i.e. disintegrating into small particles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
- Crushing And Pulverization Processes (AREA)
Abstract
The invention relates to the technical field of wind power blades, and discloses a wind power blade recovery treatment method. The wind power blade recovery treatment method comprises the following steps: a blade block with a maximum size not more than 2 m is smashed to particles with a maximum size not more than 5 cm; the particles are separated out resin particles, glass fiber particles and light material particles according to material types; the densities of the light material particles are lower than the densities of the resin particles and the glass fiber particles; and the resin particles are smashed to powder with 40-1250 meshes. The particles and the powder produced by the wind power blade recovery treatment method are wider in use field compared with massive materials, so that the material waste is prevented, and the material utilization rate is increased.
Description
Technical field
The present invention relates to wind electricity blade field, particularly a kind of wind electricity blade recovery and treatment method.
Background technology
Wind electricity blade mainly adopts thermosets and fibrous material to make, and length of blade is: more than 40m, and Breadth Maximum is: more than 2m, bulky.When wind electricity blade arrives useful life, need to process it, there is no more ripe processing method at present, all that to be cut to relatively little vanes block by the mode of artificial cutting (but larger, full-size is no more than two meters) in order to recycling or abandoning, usually all abandon, secondary utilizes limited, cause material waste, utilization of materials is low.
Summary of the invention
The present invention proposes a kind of wind electricity blade recovery and treatment method, solves material waste in prior art, problem that utilization rate is low.
Wind electricity blade recovery and treatment method of the present invention, comprising:
Vanes block full-size being no more than 2m is broken into the particle that full-size is no more than 5cm, and described particle is separated by material type, to isolate resin particle, glass particle and light material particle, the density of described light material particle is all less than the density of resin particle and glass particle;
Described resin particle is ground into 40 ~ 1250 object powders.
Wherein, described described vanes block is broken into the particle that full-size is no more than 5cm, and the step that described particle is separated by material type is comprised:
Adopt the first shredder to carry out first time to described vanes block to tear up, and the vanes block after tearing up is transported to the second cyclopentane gas detector;
Vanes block after first time tears up by the second shredder is carried out second time and is torn up, and form size and be less than the vanes block after tearing up for the first time, the vanes block after second time being torn up transfers to pulverizer;
Vanes block after second time is torn up by pulverizer is pulverized, and forms the particle that described full-size is no more than 5cm;
With airflow separator, described particle is separated by grader, isolates resin particle, glass particle and light material particle.
Wherein, to be describedly separated described particle with airflow separator by grader, the step isolating resin particle, glass particle and light material particle comprises:
Described particle is blown into the grader be arranged in above described airflow separator by materiel fan, the air-flow of the classifying turbine generation of grader is by dust and described particulate separation;
The particle freely falling body be separated is described airflow separator extremely, to isolate resin particle, glass particle and light material particle.
Wherein, also comprise and carry out dedusting and filtration treatment to from the isolated air-flow with dust of described grader.
Wherein, the air-flow of described airflow separator is by discharging after dust removal and filtration.
Wherein, by with magnetic separator transport tape by second time tear up after vanes block transfer to pulverizer.
The material of the particle that wind electricity blade recovery and treatment method of the present invention is made and powder relative bulk utilizes field wider, avoids material waste, improves utilization of materials.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of wind electricity blade recovery and treatment method flow chart of the present invention;
Fig. 2 is the particular flow sheet of step S110 in Fig. 1;
Fig. 3 is resin particle, glass particle and light material particle separation schematic diagram.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The wind electricity blade recovery and treatment method of the present embodiment as shown in Figure 1, comprising:
Step S110, full-size is no more than 2m (artificial or other modes cut after vanes block, vanes block is block, block longest edge size is no more than 2m, as: vanes block 2m × 1m × 0.2m) is broken into particle (the preferably 8mm that full-size is no more than 5cm, so that powder process afterwards), and described particle is separated by material type, isolate resin particle, glass particle and light material particle (comprising: the light material such as PVC granule, Ba Shamu, material density is lower than glass fibre more than 10 times).
Step S120, is ground into 40 ~ 1250 object powders by described resin particle, the purposes that such as 60 ~ 140 order secondaries utilize is more extensive.
The wind electricity blade recovery and treatment method of the present embodiment achieves and reclaims resin particle, glass particle and light material particle by type, and the material of the particle made and powder relative bulk utilizes field wider, to carry out secondary utilization, avoid material waste, improve utilization of materials.
In the present embodiment, the idiographic flow of step S110 as shown in Figure 2, comprising:
Step S111, adopts the first shredder to carry out first time to described vanes block and tears up, and the vanes block after tearing up is transported to the second cyclopentane gas detector.
Step S112, the vanes block after first time tears up by the second shredder is carried out second time and is torn up, and form size and be less than the vanes block after tearing up for the first time, the vanes block after second time being torn up transfers to pulverizer.The present embodiment, adopt twice varigrained shredder (secondary shredder granularity is less than secondary shredder granularity), vanes block is torn up the size of the particle close to 5cm (being namely a bit larger tham 5cm), compares and once tear up, fragment size evenly.
Step S113, the vanes block after second time is torn up by pulverizer is pulverized, and forms the particle that described full-size is no more than 5cm.
Step S114, is separated described particle with airflow separator by grader, isolates resin particle, glass particle and light material particle.
Because blade material hardness is high, toughness is strong, and Heavy Weight, very difficult for blade material process, more imperfect processing mode is processed into the material being no more than 5cm at present, and core, glass fibre, resin are effectively separated, in order to solve the problem, in the present embodiment, step S114 comprises:
As shown in Figure 3, described particle is blown into (solid arrow shown in) by materiel fan and is arranged in grader 1 (particle enters grader 1 from the mouth shown in solid arrow) above airflow separator 2, by dust, (air-flow takes away dust to the air-flow of classifying turbine 11 generation of grader 1, air-flow as the dotted line arrows, enters the flow process of dedusting and filtration treatment) and described particulate separation.
The particle freely falling body be separated is described airflow separator 2 extremely, to isolate resin particle, glass particle and light material particle.
Particle is subject to the acting in conjunction of mechanical oscillation and ascending air simultaneously after entering airflow separator 2.According to material physical characteristic, different materials can carry out well-regulated sequence motion by proportion shape.Move upward than great and that diameter is large particle, discharge from higher discharging opening 21, the particle that proportion is little and diameter is little moves downward, discharge from lower discharging opening 22, the light material particle that quality is lighter flows away (as shown in dotted line arrow) from the mouth of top with ascending air, thus resin particle, glass is separated with PVC.Particularly, resin particle will flow out below airflow separator 2, glass particle flows out above airflow separator 2, some light material particles compared with lightweight are by under the effect by the negative-pressure air-flow above airflow separator, be inhaled into another the first cyclopneumatic separator, discharge below the first cyclone separator.
In order to avoid environmental pollution, also comprise and carry out dedusting and filtration treatment to from the isolated air-flow with dust of described grader.Dust is by cyclopneumatic separator by dust and gas separaion, and dust is collected by the below of the second cyclopneumatic separator, then air-flow is imported the peculiar smell in the dust removal and filtration pipeline remaining a small amount of dust of filtration and air-flow.
And, airflow separator air-flow is out by discharging after dust removal and filtration, first cyclopneumatic separator is by light material particle and gas separaion, and light material particle is collected by the below of the first cyclopneumatic separator, then air-flow is imported the peculiar smell in dust removal and filtration pipeline removing air-flow.
In the present embodiment, in step S112, transfer to pulverizer by the vanes block after second time being torn up with the transport tape of magnetic separator, enter pulverizer to avoid the metalwork in blade and damage pulverizer.
In the present embodiment, the product after broken and powder process may be used for but be not limited to following field:
Resin particle after fragmentation and glass particle, especially the particle of below 2cm can do packing material, reinforcing material and add tough material etc., as: do mixed earth reinforcing material, artificial stone reinforcing material etc., to strengthen the intensity of these concrete and artificial stone, reduce costs simultaneously.Light material particle can do packing material equally to alleviate finished product density and weight.
Resin powder can develop the end product of aggregate class (as concrete reinforced material, exterior wall true stone paint aggregate etc.), decorative kind (as dining table, kitchen countertop, toilet interior trim, automobile interior etc.), non-structural class (as Paving bricks, outdoor Wood-plastic material, guardrail, artificial stone etc.), the large series of Structure type (as FRP overpass, plank road etc.) four based on crushing technology and activating and regenerating technology.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a wind electricity blade recovery and treatment method, is characterized in that, comprising:
Vanes block full-size being no more than 2m is broken into the particle that full-size is no more than 5cm, and described particle is separated by material type, to isolate resin particle, glass particle and light material particle, the density of described light material particle is all less than the density of resin particle and glass particle;
Described resin particle is ground into 40 ~ 1250 object powders.
2. wind electricity blade recovery and treatment method as claimed in claim 1, is characterized in that, described described vanes block is broken into the particle that full-size is no more than 5cm, and comprises the step that described particle is separated by material type:
Adopt the first shredder to carry out first time to described vanes block to tear up, and the vanes block after tearing up is transported to the second cyclopentane gas detector;
Vanes block after first time tears up by the second shredder is carried out second time and is torn up, and form size and be less than the vanes block after tearing up for the first time, the vanes block after second time being torn up transfers to pulverizer;
Vanes block after second time is torn up by pulverizer is pulverized, and forms the particle that described full-size is no more than 5cm;
With airflow separator, described particle is separated by grader, isolates resin particle, glass particle and light material particle.
3. wind electricity blade recovery and treatment method as claimed in claim 2, is characterized in that, is describedly separated described particle with airflow separator by grader, and the step isolating resin particle, glass particle and light material particle comprises:
Described particle is blown into the grader be arranged in above described airflow separator by materiel fan, the air-flow of the classifying turbine generation of grader is by dust and described particulate separation;
The particle freely falling body be separated is described airflow separator extremely, to isolate resin particle, glass particle and light material particle.
4. wind electricity blade recovery and treatment method as claimed in claim 3, is characterized in that, also comprise and carry out dedusting and filtration treatment to from the isolated air-flow with dust of described grader.
5. wind electricity blade recovery and treatment method as claimed in claim 2, it is characterized in that, the air-flow of described airflow separator is by discharging after dust removal and filtration.
6. wind electricity blade recovery and treatment method as claimed in claim 2, is characterized in that, transfers to pulverizer by the vanes block after second time being torn up with the transport tape of magnetic separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610104746.6A CN105563694A (en) | 2016-02-25 | 2016-02-25 | Wind power blade recovery treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610104746.6A CN105563694A (en) | 2016-02-25 | 2016-02-25 | Wind power blade recovery treatment method |
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| Publication Number | Publication Date |
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| CN105563694A true CN105563694A (en) | 2016-05-11 |
Family
ID=55874597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610104746.6A Pending CN105563694A (en) | 2016-02-25 | 2016-02-25 | Wind power blade recovery treatment method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106186828A (en) * | 2016-07-01 | 2016-12-07 | 吉林重通成飞新材料股份公司 | Utilize the method that retired wind electric blade composite prepares square brick |
| CN107282254A (en) * | 2017-06-02 | 2017-10-24 | 吉林重通成飞新材料股份公司 | Wind electricity blade material fragmentation separates production line |
| CN109895479A (en) * | 2017-12-11 | 2019-06-18 | 上海越科新材料股份有限公司 | A kind of method and system using discarded composite material production structural member |
| CN109895284A (en) * | 2017-12-11 | 2019-06-18 | 上海越科新材料股份有限公司 | A kind of large-scale wind generating blade recovery and treatment method and processing system |
| CN110181717A (en) * | 2019-07-10 | 2019-08-30 | 吉林重通成飞新材料股份公司 | Wind electricity blade material screening plant and wind electricity blade material method for sieving |
| CN112706315A (en) * | 2019-10-25 | 2021-04-27 | 罗兰·施特 | Recovery of rotor blades |
| CN113351620A (en) * | 2021-05-31 | 2021-09-07 | 华中科技大学 | Method for treating and recycling high-quality fuel and glass fiber by waste fan blade |
| CN113895067A (en) * | 2021-10-29 | 2022-01-07 | 中国华能集团清洁能源技术研究院有限公司 | A kind of geogrid and preparation method thereof |
| CN115090647A (en) * | 2022-05-10 | 2022-09-23 | 北京华能长江环保科技研究院有限公司 | Fan blade disposal and utilization system and disposal and utilization method |
| CN115463653A (en) * | 2022-11-14 | 2022-12-13 | 国能龙源环保有限公司 | Method for preparing denitration catalyst by utilizing waste wind power blades and application |
| CN115608748A (en) * | 2022-10-27 | 2023-01-17 | 华能阜新风力发电有限责任公司 | A method for recovering balsa wood from decommissioned wind power blades |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106186828B (en) * | 2016-07-01 | 2018-11-02 | 吉林重通成飞新材料股份公司 | The method for preparing square brick using retired wind electric blade composite |
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| CN109895284A (en) * | 2017-12-11 | 2019-06-18 | 上海越科新材料股份有限公司 | A kind of large-scale wind generating blade recovery and treatment method and processing system |
| CN110181717B (en) * | 2019-07-10 | 2024-06-04 | 吉林重通成飞新材料股份公司 | Wind turbine blade material screening equipment and wind turbine blade material screening method |
| CN110181717A (en) * | 2019-07-10 | 2019-08-30 | 吉林重通成飞新材料股份公司 | Wind electricity blade material screening plant and wind electricity blade material method for sieving |
| CN112706315A (en) * | 2019-10-25 | 2021-04-27 | 罗兰·施特 | Recovery of rotor blades |
| CN113351620A (en) * | 2021-05-31 | 2021-09-07 | 华中科技大学 | Method for treating and recycling high-quality fuel and glass fiber by waste fan blade |
| CN113895067A (en) * | 2021-10-29 | 2022-01-07 | 中国华能集团清洁能源技术研究院有限公司 | A kind of geogrid and preparation method thereof |
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