Abstract: A burner of the double vortex type wherein combustibles travel in an outer spiral during which time the combustibles ignite and burn and the combustion products are expelled from the burner by travelling along an inner spiral. The inner and outer spiral layers are separated by a cylindrical wall to prevent disruption of the currents and countercurrents and adverse turbulence as a result thereof in order that the combustibles and particularly solid fuels are entrained in the combustion stream for a sufficient residence time for maximum combustion and minimum particulate emission. The burner is particularly suitable for operation at slagging temperatures so that the slag can be collected and drawn off to further reduce particulate emission.

Abstract: Apparatus for the disposal of solid wastes by converting the organic fraction of such wastes to a fuel or fuel supplement and by recovering one or more of the constituents of the inorganic fashion. A minimum amount of sterile land fill remains. No significant pollution problems are created. The apparatus comprises shredding means, primary separating means, magnetic separating means, fines separating means, acid applying means, drying/heating means, grinding means and means to separate the fine product fuel. The system can, if desired, be essentially self-contained in heat energy requirements.