ELEMENTAL ANALYSIS AND CHEMICAL-COMPOSITION-BASED MATERIAL SEPARATION AND BLENDING

摘要

The need for elemental analysis and chemical-composition-basedmaterial separation will be demonstrated for scrap metal alloys,including aluminum alloys. Sorting of a few known alloys in the manufacturing scrap stream will be compared to the batching of a secondary alloy from an unknown mixture of post-consumer scrap.The capabilities of LIBS, XRF and PGNAA (neutron activation)for quantitative elemental analysis will be compared. The analytical capability requirements of process control andhigh-speed sorting will be contrasted. Examples of successful sorting applications using each of the three technologies will be discussed.