Abstract: The invention relates to a method which makes it possible to produce homogeneous mixtures of industrial wastes such as polluted waters, hydrocarbon wastes and various coal grades, as well as combustible industrial wastes. An essential feature is that the homogeneous mixtures produced in accordance with this invention are stable, and lend themselves to being pumped and injected.According to the invention, this method consists in forming during a first stage a stable emulsion of oily combustible material in water and during a second stage, in mixing this emulsion with a solid or liquid combustible material.