Dewatering solids suspensions with controlled flocculant addition
US4675116A · kind A · utility
24Cited by
7References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 18, 1985 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | Jul 18, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F2101/305
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Solids suspensions are dewatered by filter plate pressing by adding a flocculant downstream of the filter press pump(s), the pump(s) being of the positive displacement type whereby the amount of flocculant required can be determined from the speed of the pump(s). Apparatus is provided which includes a filter plate press, one or more filter press pumps of the positive displacement type, and means for sensing the speed of the pump(s) and for controlling the dose of flocculant in dependence thereon. A mixer is constructed as a cylindrical chamber with radial inlets and axial outlets, and includes plate-like impellers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.