Method for the production of a magnesium chloride solution
US5980854A · kind A · utility
3Cited by
9References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1998 |
| Grant date | Nov 9, 1999 |
| Priority date | — |
| Expiry date | Sep 23, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention is concerned with a method for the extraction of magnesium from magnesium-containing materials such as magnesite, dolomite and silicates materials like serpentine residues, products from the amphibole or pyroxene group. The magnesium-containing material is first leached in at least one leaching reactor, and subsequently submitted to a series of neutralizing steps in separate reactors under controlled pH and oxydo-reduction potentials. The slurry produced is filtered to produce a substantially pure magnesium chloride solution containing less than 1 ppm of each contaminant present therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.