improved process for reuse of municipal solid waste

摘要

Procedure for the repackaging and printing of plasticised solid elements using heterogeneous materials, in particular urban solid waste, in which such waste is previously cleaned of soil, organic matter and metals, consisting of the final grinding of such purified waste, the addition of binding substances and the extrusion of the mixture thus obtained in appropriate ways. moulds in which these solid elements are formed by pressure,where such extrusion is carried out at a gradually increasing temperature up to the stabilization temperature corresponding to the maximum temperature. Ideally this maximum temperature does not exceed 180oC.The extrusion screw has a main thrust shoulder with curved profile, and between a main shoulder and the adjacent shoulder there is a secondary shoulder with lower height than the height of the main shoulder.