System for classification of particulate materials
US4781671A · kind A · utility
14Cited by
7References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1987 |
| Grant date | Nov 1, 1988 |
| Priority date | — |
| Expiry date | Mar 28, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F1/52
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Commercial wide size distribution powders are size classified into precise size fractions by means of a controlled, semi-continuous, multi-stage centrifugal classification system. The system has utility for a wide range of colloidal materials. The throughput of the semi-continuous process is higher than that of batch processes, and the semi-continuous process produces narrow size ranges and optimum yields.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.