Process for recovering the scraps deriving from the machining of aluminum and its alloys,with production of extruded semifinished articles

摘要

Process for recovering the scraps deriving from the machining of aluminum and its alloys, such as trimmings, shavings and filings impregnated with lubricant oils, emulsified oils and the like, with high yields and low energy consumption, consisting in submitting the scraps to a baking step at temperatures not lower than 300°C, in grinding the scraps, and in submitting the so-obtained fragments or granules to a continuous extrusion, under high specific pressures, comprised within the range of from 0.5.10⁶ kPa to 10⁶ kPa and in such a way that the temperature in the extrusion area results higher than 300°C.