Method for recycling used or discarded portable electric batteries
US11417893B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 10, 2013 |
| Grant date | Aug 16, 2022 |
| Priority date | — |
| Expiry date | May 25, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/84
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for upgrading used or rejected electric battery cells, which include upgradable compounds, such as iron, zinc, manganese, copper, and fixed and volatile carbon, and heavy metals and dangerous compounds. The used or rejected battery cells are introduced as a load into a furnace for melting metal, such as a cupola furnace, a free arc furnace, or an induction furnace. A device for purifying gases produced by the furnace and for capturing and removing noxious elements, such as mercury, chlorides, and fluorides, and heavy molecules such as dioxins, furans, and aromatic substances, is provided in a discharge route of the hot gases, downstream from the melting furnace.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.