Method and apparatus for centrifugally separating a heavy fraction from a light weight fraction within a pulp material
US4279741A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 7, 1979 |
| Grant date | Jul 21, 1981 |
| Priority date | — |
| Expiry date | May 7, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04B3/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A centrifugal jig receives a pulp material within a rotating cylindrical jig bed for the purpose of separating the pulp into a selected heavy fraction and a lightweight fraction. The jig bed is cylindrical. It is rotated to produce an outward centrifugal force on the pulp material that is substantially greater than the force of gravity. A liquid is pulsed inwardly to produce a fluidic bed within the rotating jig bed to permit settling and separation of the heavy fraction from the lightweight fraction. The heavy fraction is screened and passed radially outward to be collected outside the bed. The lightweight fraction or tailings are moved over a discharge edge of the jig bed and are collected at a station remote from the heavy fraction collection area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.