Treatment of waste and residue containing sodium and potassium ions
US5124048A · kind A · utility
0Cited by
1References
5Claims
0Family size
Inventor
Key dates
| Filing date | Oct 2, 1991 |
| Grant date | Jun 23, 1992 |
| Priority date | — |
| Expiry date | Oct 2, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/5236
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The invention concerns a process for lowering or eliminating the sodium and potassium ion content in various forms of waste. According to the process, waste is treated with the residue, itself regarded as a pollutant since rich in fluosilicic acid, discharged from the manufacture of sulfuric acid on a calcic ore based on calcium phosphate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.