Full
Outline
To expand the application of multistage series centrifugal extractors in corrosive working conditions，a proposal was made to use polyvinylidene fluoride （PVDF） fluoroplastic to replace conventional metal materials for manufacturing centrifugal rotors.The structural design for molding of centrifugal rotors，molding process and key parameter control，strength check，power calculation，and safety design were analyzed.The CTX350-PVDF centrifugal extractor was developed，performance tests were conducted on it，and it was successfully applied in phenol‑ammonia wastewater engineering.The results show that the performance indicators of the CTX350-PVDF centrifugal extractor meet national standard requirements，with a vibration velocity of 3.4 mm/s under load operation，bearing temperature of 38.6 ℃，and bearing temperature rise of 6.5 ℃；in the phenol‑ammonia wastewater engineering application，it operated well.Through 5‑stage extraction and 3‑stage back‑extraction processes，the extractant was regenerated and recycled，wastewater chemical oxygen demand （COD） was reduced by approximately 89%，and phenol content was reduced to 2 430 mg/L，meeting the requirements of downstream production processes.The research can provide technical support for the promotion and application of centrifugal solvent extraction technology in fields such as waste battery recycling and rare precious metal extraction.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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