METHOD AND APPARATUS FOR SEPARATING OILY AND FATTY MATERIALS FROM SOLID PARTICLES

摘要

A method and apparatus for separating oily and fatty materials from solid particles to which they are attached wherein the solid particles are subjected to controlled mechanical attrition and the resulting particles are then subjected to at least one froth flotation process with a washing liquid. The cleaned solid particles from the flotation process are separated from the washing liquid. The oily and fatty materials are separated from the effluent of the froth flotation process to produce a clarified wash liquid which can then be recycled for further use in the process, particularly as a pre-wash liquid for the particles.