Vertical grinding mill
US4660776A · kind A · utility
5Cited by
0References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1985 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | Oct 11, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C17/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An improved vertical grinding mill is provided which has a shell, a vertical helically bladed shaft rotatably mounted in the shell, a collector, a drive for the shaft, and a fan or a pump. The shaft is hollow and its lower end is open at the bottom of the shell. This assures a uniform distribution of the material to be treated, the grinding medium and the product particles and thus high production efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.