PROCEDURE FOR THE ELIMINATION OF OIL FROM SOLID PRODUCTS WITH PARTICLES OF SMALL SIZE, IN PARTICULAR OF PRODUCTION WASTE CONTAINING METALS AND SOILED SOILS.

摘要

IN THE PROCESS, THE SOLID MATERIAL IS WASHED IN A WASHING PROCESS WITH AN AQUEOUS RINSING FLUID THROUGH WHICH THE OIL IS EMULSIFIED IN THE RINSING FLUID, THEN SEPARATED FROM THE SOLID. TO INCREASE EFFICIENCY AND REDUCE REAGENT CONSUMPTION, THE SOLID IS INTENSELY BLENDED BEFORE THE WASHING PROCESS AND, AT THE SAME TIME, SPRAYED WITH AN EMULSIVE, SUBSTANTIALLY IN THE ABSENCE OF WATER. THE WASHING PROCESS TAKES PLACE IN A SHAKING CONTAINER FILLED WITH RINSING FLUID, IN WHICH THE MATERIAL IS MIXED WITH THE SHAKING FLUID UNDER SIMULTANEOUS APPLICATION, WHEN IT IS TIMELY ESTIMATED, OF ULTRASONIC WAVES.