Discharge grate assembly
US9289775B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2013 |
| Grant date | Mar 22, 2016 |
| Priority date | — |
| Expiry date | Feb 20, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C17/183
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A discharge grate assembly for at least partially guiding slurry from a mill shell chamber toward a discharge trunnion thereof via a pulp lifter chamber. The discharge grate assembly includes a body having apertures for permitting the slurry to flow from the mill shell chamber into the pulp lifter chamber, and a shroud having a number of cover elements and a number of openings located at least partially therebetween. The shroud is movable relative to the body between an open position, in which the openings are at least partially aligned with at least preselected ones of the apertures to permit the slurry to flow therethrough into the pulp lifter chamber, and a closed position, in which the cover elements are at least partially aligned with at least predetermined ones of the apertures, to at least partially prevent the slurry flowing through the apertures back into the mill shell chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.