Electrolytic causticizing of smelt from a kraft recovery furnace
US6319358A · kind A · utility
1Cited by
6References
16Claims
0Family size
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Key dates
| Filing date | Jan 25, 1999 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Jan 25, 2019 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C11/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An electrochemical process is provided for treatment of molten kraft smelt produced from black liquor in a kraft recovery boiler. Treated smelt can be contacted with water to produce white liquor which can be re-used or recycled in the kraft process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.