System and method for purification of electrolytic salt
US9783898B2 · kind B2 · utility
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9Claims
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Key dates
| Filing date | Nov 5, 2015 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | Nov 5, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B30/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Methods and systems for removing impurities from an electrolytic salt are disclosed. After removal of impurities from the salt, the salt can be subjected to electrorefining to produce high-purity materials, for example silicon. Impurities are removed from the salt using a system that includes a first working electrode, a counter electrode, and at least one reference electrode. A second working electrode can also be utilized. The salt may be utilized in an electrorefining system, for example a system operated in a single phase or multiple phase operation to produce high-purity materials, such as solar-grade silicon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.