Importance

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Abstract

A system for producing a suitable fuel from waste material including a dispersion tank in which a rotating impeller is positioned in the bottom of such tank in close spaced relationship above a stationary plate and the facing surfaces of the impeller and the plate include shear blocks which intermesh to grind solid materials in the tank and disperse the solid materials in a blend stock making a suitable fuel. A cylinder is connected to raise and lower the impeller to control the spacing between the impeller and the plate and thus control the spacing between the shear blocks to control the fineness of the grinding of the waste material. Means is provided for discharging metal from the dispersion tank and means is provided for circulating liquid from the dispersion tank to an accumulation tank and for recirculating the liquid from the accumulation tank to the dispersion tank. Feeding systems are provided for delivering solid waste material to the dispersion tank and include systems for grinding drums containing waste material, expressing waste material from the drums and augering waste material from the drums. The present invention also provide a method of is processing waste material and a blend stock which provides a suitable fuel and includes the steps of grinding the waste material in a tank containing the blend stock with the grinding being in at least part provided by the coaction between a rotating impeller and a stationary plate so that the degree to which the waste material is ground is controlled by controlling the spacing between the plate and the impeller.

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First Claim