Abstract: A method is provided for processing a mixture raw automobile shredder residue, and virgin and/or contaminated synthetic plastic material, e.g., raw post consumer plastic waste. By means of this method, automobile shredder residue produced by a conventional automobile shredder is formed into a first stream by being ground in a first granulating zone to a reasonable small granular size using conventional equipment. A second stream comprising virgin and/or contaminated synthetic plastics material is ground in a second granulating zones. The two streams are combined to provide a processable mixture. The processable mixture is introduced into a high intensity, mixer. The processable mixtures transformed into a semi-molten discharge stream by the kinetic energy imparted to the processable mixture by the mixer are simultaneously vented from the mixer. The semi-molten mixture emerging from the mixer is then introduced into an extruder or press where it is formed into a mass of desired shape, and cooled.

Abstract: A hammer is provided which is useful in solid waste, e.g. metal, shredding operations. The hammer includes a shank member adapted to be connected to a supporting shaft, and a replaceable tip member which is subject to wear substantially along its leading and lower portions. The shank end and the tip are slidably interconnected along a common face, e.g., by a tongue and groove interrelationship. Cooperating keyway pocket and hooked key interconnecting means are provided on the shank and on the tip, with a significant portion of the keyway pocket/hooked key interengagement being in the shank. A slot passes through the shank and the tip adjacent the trailing edge thereof. A wedge is inserted into the slot. Finally, means are provided for retaining the wedge in the slot. In this way a tip member is provided which is very easily replaced when worn.