A method of separating a solid-liquid suspension (e.g. an aqueous coal suspension, a suspension of clay in oil) by concurrently subjecting the suspension to the action of a sonic or ultrasonic field and an electrical field so as to remove the liquid from the suspension. The suspension is moved into a...http://www.google.es/patents/US4747920?utm_source=gb-gplus-sharePatente US4747920 - Solid-liquid separation process for fine particle suspensions by an electric and ultrasonic field
Solid-liquid separation process for fine particle suspensions by an electric ...
