Continuous method of removing impurities from crude silver nitrate
US6042800A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1993 |
| Grant date | Mar 28, 2000 |
| Priority date | — |
| Expiry date | Dec 28, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01G5/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Herein is disclosed a continuous process for manufacturing purified silver nitrate solutions comprising the steps of: PA1 a) transferring a crude silver nitrate solution, together with a slurry comprising silver oxide, to a multistage agitated reactor, thereby forming a mixture; PA1 b) maintaining a continuous weight percent undissolved solids inside the reactor such that silver oxide is 10 to 80 weight percent of said undissolved solids; PA1 c) transporting the first mixture through the reactor over a period of 15 minutes to 3 hours to form a reaction product; and PA1 d) filtering the reaction products through a continuous filter to form a silver nitrate filtrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.