This work aims to show the experience built up in Eco-Ricicli Veritas srl (ERV) about the optimization of hollow glass recovery. More precisely, it will be elucidated the treatment applied to the reject of the furnace-ready cullet process. In this process, during the optical screening of the input material a reject is obtained, composed of stones, bricks, ceramic, dark glass and plastic material of variable grain size. The miscellaneous composition of this reject makes the recovery as, well as the disposal very difficult. In the light of an increase of glass recovery, ERV has applied a technological improvement to the sorting process which recovers glass cullet incorrectly present in the rejected material and puts it back in the Furnace-ready cullet treatment process. The remaining material is then transformed for direct use in building industry, or in other type of industrial recovery process, saving some amount of virgin raw material. The technological process consist in the grain size reduction of the material and the removal of light materials (plastic, organic). The material obtained is a silica-like coarse sand, which has been tested for the use as partial replacement as background material for road pavements, and mixed with clay for street’s building. Further tests are under way to check the use of this material in other technological and industrial fields.
