Electrostatic method of separating particulate materials
US6320148A · kind A · utility
Inventors
Key dates
| Filing date | Aug 5, 1999 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Aug 5, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S209/92
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of separating particulate materials of different properties has been developed. It consists of feeding a mixture of dry, powdered materials to one end of the surface of a planar electrode, which is vibrating to move the particles forward. At least one type of the particulate materials acquires a charge via conduction or triboelectrification. Those particles that acquire charges of the same sign as that of the planar electrode are lifted and collected at the V-shaped counter electrodes installed above. The new separation method is particularly useful for removing unburned carbons from fly ash and any other conducting materials from nonconducting ones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.