Filtering and separating system and method for recycling Fe3O4 nano-particles
US12364942B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2021 |
| Grant date | Jul 22, 2025 |
| Priority date | — |
| Expiry date | May 19, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03C1/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides a filtering and separating system and method for recycling Fe3O4 nano-particles. The system includes an original liquid tank, a first booster pump, a clustered filter, an electromagnetic filtering machine, a dynamic membrane system and a nano-particle collecting tank; and a concentrated liquid outlet of the dynamic membrane system is connected with a material inlet of the clustered filter, and a material outlet of the electromagnetic filtering machine is also connected with the nano-particle collecting tank. According to the method, the Fe3O4 nano-particles in the original liquid tank are separated and collected by the electromagnetic filtering machine, and remaining impurities are collected by the clustered filter, so that a filtering and separating purpose is realized; water purified by a reverse osmosis membrane system is used for washing the Fe3O4 nano-particles, thereby reducing the waste of resources; and a spray drying apparatus is arranged in the electromagnetic filtering machine, and may dry the washed Fe3O4 nano-particles, so that the recycled Fe3O4 nano-particles may be used directly, and the efficiency is higher. The method is short in pro…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.