Method for processing used battery
US5199975A · kind A · utility
4Cited by
2References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1992 |
| Grant date | Apr 6, 1993 |
| Priority date | — |
| Expiry date | Mar 6, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for recovering cadmium in used nickel-cadmium batteries by heat treatment. According to the invention, a plastic case for a battery can be separated from a battery body easily without leaking cadmium. High purity cadmium can be recovered by volatilizing cadmium in a non-oxidizing atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.