Refining process of spent waste from electrolytic vats for the extraction of metallic aluminum

摘要

B "REFINING PROCESS OF WASTE WASTE FROM METAL ALUMINUM EXTRACTION ELECTRIC EXHAUST CUBES" D. It refers to the present application, the possibility of obtaining carbonaceous and ceramic residues refined to levels of purity that allow their reuse in different types of applications, as well as the recovery of fluorides and oxides that are also economically reusable. Finally and very importantly, this process avoids the need for special storage of used tank rejects (RGC), as it removes and eliminates all the toxic components of these rejects, which represent class 1 environmental risks. The basic principle of operation of the process is heating under vacuum, or under atmosphere of moving gases, which allow the destruction of cyanides contained by thermal dissociation and the separation of impurities by distillation and liquefaction and transport under vacuum, or by moving gases and gravity for collectors and condensers special.