Laser‐Induced Breakdown Spectroscopy and Its Application Perspectives in Industry and Recycling

Laser-induced breakdown spectroscopy (LIBS) is able to analyze conductive as well as insulating materials in any state of aggregation. The task of a mix-up detection in a rolling mill is to assure that always the correct steel grade is transported to the subsequent furnace and first roll stand. This chapter details an inline LIBS measurement at metallic piece goods in a rolling mill. The development and validation of separation technologies for the high grade recycling of refractory waste was the goal of an European project. The economics of recycling scrap alloys depends on the one hand on the alloy, the element concentrations involved and their value, and on the other hand on the recycling methods used and their costs. Scraps are traded on the market like products. They are differentiated into different qualities. For a stainless CrNi-steel, the content of chromium and nickel is crucial.