Classifying hammermill system and method of operation
US3966126A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 10, 1975 |
| Grant date | Jun 29, 1976 |
| Priority date | — |
| Expiry date | Feb 10, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C13/282
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus and method for processing fibrous material into fluff and substantially individual fibers. The apparatus includes a hammermill having an impermeable wall of grid-like configuration against which fibrous material to be fiberized is thrown by impact element rotation. The fibrous material is conveyed through the mill in an air stream which defines a general path for the fibrous material under the influence of impact element rotation. The grid-like wall serves to slow the particles of fiber rebounding from the wall so that the particles are subjected to repeated impacts by the impact elements of the mills. Rings divide the interior of the hammermill to control the fiber flow in the air stream to the outlet. A pair of hammermills in sequence permits pulps which are difficult to defiberize to be readily reduced to fluff.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.