Process and apparatus for sorting reusable pieces of raw material

US10641712B2 · kind B2 · utility

Assignee

• Clean-Lasersysteme Gmbh · DE

Inventors

• Edwin Buchter · Aachen, DE
• Winfried Barkhausen · Aachen, DE
• Hans-Bernd Pillkahn · Werdohl, DE

Key dates

• Filing date: Sep 10, 2015
• Grant date: May 5, 2020
• Expiry date: Sep 10, 2035

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2201/06113
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A system for sorting reusable raw-material pieces, where the chemical composition of the raw-material pieces is analyzed by laser-induced breakdown spectroscopy (LIBS), where the raw-material pieces in a first step are subjected to a plurality of first laser pulses in order to remove surface coatings and/or contaminants from the raw-material pieces, and in a second step, one or more further laser pulses from the same laser are used to generate a plasma.