Earth and sand containing bitumen, tar, and/or oil is broken down to particle sizes that can be suspended in water as a carrier for the particles, so that the suspension can be pumped upwardly through an inclined duct or separator where the suspended particles are subjected to horizontal ultrasonic vibrations...http://www.google.es/patents/US4443322?utm_source=gb-gplus-sharePatente US4443322 - Continuous process and apparatus for separating hydrocarbons from earth particles and sand
Continuous process and apparatus for separating hydrocarbons from earth ...
