Flotation apparatus for floating fiber suspensions extracted from waste paper
US4560474A · kind A · utility
23Cited by
2References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 9, 1984 |
| Grant date | Dec 24, 1985 |
| Priority date | — |
| Expiry date | Feb 9, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/75
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The flotation apparatus has a vessel or container into which vortex or turbulence channels lead. These vortex channels supply the fiber suspension or stock to the vessel and are provided with at least one stepped enlargement. An air conduit supplying flotation air opens into the vortex channel. The vessel is substantially cylindrical about a vertical axis and is provided in its upper region with a central conduit or pipe for extracting the flotation foam. In the lower region of the vessel a conduit for extracting the recovered good stock is disposed tangentially.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.