Method and apparatus for electrostatic separation
US5829598A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1995 |
| Grant date | Nov 3, 1998 |
| Priority date | — |
| Expiry date | Apr 28, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03C7/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A belt-type counter-current separator for separating a mixture of particles, including conductive particles, includes a voltage radiant assembly having a plurality of conductive elements inter-disposed with a plurality of dielectric elements. The plurality of conductive elements are coupled to respective nodes of a voltage dividing circuit for dividing a voltage between a high potential electrode, of the electrostatic separator, and a reference potential. The plurality of conductive elements and dielectric elements in combination with the voltage dividing circuit limit a voltage potential between any adjacent conductive elements to a maximum potential so as to prevent sparking due the presence of conductive particles in the separator. In one embodiment of the separator, the voltage gradient assembly is an extruded plastic material having both conductive and non-conductive elements and pieces of alumina are disposed between the conductive elements to provide a durable voltage gradient surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.