Process for preparation of zinc powder for alkaline batteries by amalgamation of zinc powder
US4460543A · kind A · utility
18Cited by
1References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 6, 1983 |
| Grant date | Jul 17, 1984 |
| Priority date | — |
| Expiry date | Apr 6, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Zinc powder containing mercury for alkaline batteries are prepared by reacting zinc powder with metallic mercury in the presence of amalgamation aids with agitation in a closed system, at a partial oxygen pressure of less than 100 mbar, while the volatile parts are continually exhausted, then raising the partial value of atmosphere air. Additional alloying elements can be added to reduce the gas development, by mixing zinc powder with metallic mercury in which is dissolved a part or the entire quantity of the required alloying elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.