Method and apparatus for screening peat moss material
US5429247A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1994 |
| Grant date | Jul 4, 1995 |
| Priority date | — |
| Expiry date | Nov 3, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB07B1/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Method and apparatus for screening peat moss material. The method comprises the steps of forming an aqueous slurry of peat moss material and flowing the slurry on a screen to separate fines from coarser particles in the slurry. A spray of relatively large water drops is directed at the slurry to agitate the coarser particles blocked by the screen in order to dislodge fines adhering thereto, whereby the fines freed from the coarser particles are allowed to egress the slurry through the screen. The water spray also has the effect of clearing the screen of fines which clog the screen openings. The invention also comprehends a method and apparatus for screening peat moss material, comprising the steps of flowing an aqueous slurry of peat moss material on a sieve to extract from the slurry excessively large particles, and washing the rejects remaining on the sieve to dislodge therefrom smaller particles of acceptable size which are returned to the slurry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.