The recovery of raw material related to durable goods (post-consumer), consisting of ferrous and non-ferrous metals and other materials, such as plastics, rubbers, glass, fabrics, etc., is a relatively recent aspect of recycling, which manifested itself when durable goods, introduced in the 60s by the economic miracle, began to be expelled in large quantities from the consumption cycle. Paradoxically, therefore, while in the '60s were introduced in the sector the first systems of abatement of dust and fumes in steel mills , their effectiveness was reduced due to the worsening of scrap quality and consequently of emissions. With the time these complex sets of metals and non-metals changed and became more and more complicated. It is necessary  to know these complex sets of metals and non-metals, for their importance as second raw materials and explain the need of a recovery action that influence and guide the scrap processing. The scrap recycling chain must be aligned with a future-oriented economy that has as primary aim the product thought as scrap and the scrap thought as a product (sustainable development ˃ green economy ˃ circular economy). Recycling is also an activity that must be able to combine respect for the environment with economically sustainable solutions. REDLINE represents the know-how, which is not only knowing how to build reliable and efficient machines but also researching the new that advances, studying and developing solutions and production processes dedicated to the separation and recovery of raw materials dispersed in the scrap with eco-economic compatible solutions.