Roll crusher and crushing method in use for the roll crusher
US5088651A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1990 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Sep 28, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/08264
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A roll crusher having a pair of rolls facing each other, in which feed material to be crushed is fed into a space or a crushing chamber formed in between these rolls, and the pair of rolls rolls up the material to compress and crush it. Both ends of one or the other of the rolls are provided with flanges which cover the lower portions of end openings in the crushing chamber. Cheek plates fixedly disposed cover the remaining portions of the end openings of the crushing chamber. This construction helps prevent feed material from flowing out of the crushing chamber. One of the pair of the rolls is driven for rotation by a source of drive power, and the other is rotated freely as well as driven to rotate initially at low speed, which permits coarse materials to be forcibly entrained in between the rolls for crushing. During the process of crushing, the crushing clearance of rolls is set to 0.6 to 2.4 times 80% passing size of feed material, and feed rate is limited so that passing rate of the material ranges 0.5 to 0.8 times the theoretical throughput capacity of the crusher, which remarkably increases the actual throughput of the roll crusher.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.