Electrostatic conductive induction separator
OwnerPeter Jon Gatesinventor
Life of this patent
Estimating the term…
Abstract
A particle separator for the separation of particulate mixture having species that exhibit difference in electrical conductivity. The separator has a conductive surface including a separation zone, has feeder means for feeding the species to the separation zone, and has an electrode arrangement for inducing charge in conducting species and lifting them from the conductive surface once charged. Also, the separator has cleaning means and drive means.
Claims58
A particle separator for the separation of particulate mixtures comprising species that exhibit difference in electrical conductivity, comprising:
- a conductive surface including a separation zone over which said species move at a predetermined velocity, the electrical conductivity of which is reduced over time through surface contamination;
- feeder means for feeding said species to said separation zone;
- an electrode arrangement spaced apart from said conducive surface for inducing charge in conducting species as they move across said separation zone and lifting said conducting species from said conductive surface once charged;
- cleaning means located other than within said separation zone for producing a conductive surface free from surface contamination;
- and
- drive means for movement of said conductive surface relative to said electrode arrangement in order to bring said conductive surface free from surface contamination into a position where it constitutes said separation zone.
A particle separator for the separation of particulate mixtures comprising species that exhibit difference in electrical conductivity, comprising:
- a conductive surface including a separation zone over which said species move at a predetermined velocity;
- feeder means for feeding said species to said separation zone;
- an electrode arrangement spaced apart from said conducive surface for inducing charge in conducting species as they move across said separation zone and lifting said conducting species from said conductive surface once charged, said electrode arrangement comprising a primary electrode for inducing charge in said conducting species spaced apart from at least a first portion of said separation zone within which said particulate material makes contact with said conductive surface, and a secondary electrode for lifting said conducting species from said conductive surface once charged spaced apart from a second portion of said separation zone within which said conducting species lift from said conductive surface.
A dielectric electrode comprising:
- a first glass substrate metallised on one of its surfaces to create an electrically conductive surface;
- a high voltage lead in electrical connection with said electrically conductive surface;
- and
- a dielectric material in electrically insulative abutment with said electrically conductive surface.
A process for the separation of particulate mixtures comprising species that exhibit difference in electrical conductivity, comprising the steps of:
- providing a conductive surface including a separation zone over which said species move at a predetermined velocity, the conductivity of which reduces over time through surface contamination, which is spaced apart from an electrode arrangement for inducing charge in conducting species as they move across said conductive surface and lifting said species from said conductive surface once charged;
- producing at least a portion of said conductive surface free from surface contamination;
- and
- feeding said species onto said conductive surface free from surface contamination.
Dependencies are inferred from the claim text.