Treatment of brine to remove metals and silicon therefrom
US6627085B2 · kind B2 · utility
5Cited by
13References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2001 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Oct 11, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed is a process for reducing the amount of silicon in brine. More specifically the silicon content of the brine is reduced to 1 ppm or less by using low caustic excess. The disclosed process can also be characterized as lowering sodium hydroxide excess (caustic excess) while maintaining the sodium carbonate level thereby obtaining a brine with a low level of silicon. A further purification step employs a sludge blanket.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.