Screening apparatus and method
US4222863A · kind A · utility
3Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 22, 1979 |
| Grant date | Sep 16, 1980 |
| Priority date | — |
| Expiry date | Jan 22, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D29/908
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A pressurized screening apparatus removes both bouyant contaminants and denser contaminants from a liquid suspension containing desirable fibers and contaminants. Both the undesirable bouyant contaminants and the undesirable denser contaminants are accumulated in the same section of the pressurized screening apparatus. If desired, the accumulating bouyant contaminants and denser contaminants may be intermittently removed from the pressurized screening apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.