Method of granulating peat using gentle extrusion conditions and viscosified water
US6287496A · kind A · utility
31Cited by
12References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 19, 1999 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Oct 19, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC05F11/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Peat-containing granules possessing numerous beneficial properties can be prepared by a process involving gentle extrusion in which viscosified water is used in the extrudable composition. Advantageously, gentle extrusion allows a peat-containing extrudate to be formed in which the beneficial properties of the raw peat are well preserved. In preferred embodiments, gentle extrusion is achieved by using an extrusion die provided with a plurality of apertures and a relatively large open area which allow low extrusion pressures to be used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.