Tube mill
US3949940A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 19, 1974 |
| Grant date | Apr 13, 1976 |
| Priority date | — |
| Expiry date | Mar 19, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB02C17/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An air-swept tube mill having at least two grinding chambers and a discharge chamber, an internal by-pass means in the last grinding chamber in communication at one end with the grinding chamber immediately preceding the last grinding chamber and at the other end, with the discharge chamber, whereby material ground in the first chamber is transferred through the by-pass directly to the discharge chamber and oversize material is transferred from the discharge chamber to the last grinding chamber for further grinding. A unique method is disclosed in which grinding of material takes place in a first grinding chamber of a tube mill and by-passed into a discharge chamber. The method further comprises feeding oversize materials from the discharge chamber into a last grinding chamber for additional grinding thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.