Start-up method for draft tube mixing
US7331704B2 · kind B2 · utility
4Cited by
12References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2005 |
| Grant date | Feb 19, 2008 |
| Priority date | — |
| Expiry date | Mar 16, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F23/023
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for suspending settled solids in a liquid using a mixing assembly having a mixing vessel, draft tube disposed within the mixing vessel and an impeller disposed within the draft tube. The method includes rotating the impeller in a first rotational direction for a first period of time so as to cause the liquid to flow in a first axial direction. The method also includes rotating the impeller in a second rotational direction so as to cause the liquid to flow in a second axial direction opposite the first axial direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.