Method for recovering lead from batteries
US4310351A · kind A · utility
9Cited by
3References
3Claims
0Family size
Inventor
Key dates
| Filing date | Jun 9, 1980 |
| Grant date | Jan 12, 1982 |
| Priority date | — |
| Expiry date | Jun 9, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/84
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method has been developed whereby scrap lead storage batteries are mechanically treated and screened. Upon subsequent heating of the oversized fraction, 25-30% of the dry weight is recovered as metal. Using this method as a pretreatment to the reduction of the lead oxides and lead sulfate, a significant cost reduction can be made to the overall process. As a process of its own, metallic lead can be obtained and sold and the residual lead compounds can be sold to a smelter as a higher quality feed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.