Scrap aluminum is an important raw material of aluminum alloy casting industry.It is a common and key issue how to identify its composition and regenerate former grade under industrial conditions.The application mode and the new concept "solid state aluminum scrap grade identification" has been presented by comparing the component identified method throughγ-rays

laser-induced breakdown spectroscopy component identification（LIBS or LIPS）and X-rays.The aluminum scrap regeneration process of "identification+liquid-solid grades accurate analysis" has been presented

based on the existing aluminum scrap recycling process.The process is a new way to overcome the problems which need component adjustment repeatedly in waste aluminum regeneration process.