Metal sorting system using laser induced breakdown spectroscopy and operating method thereof

A metal sorting system using laser induced breakdown spectroscopy (LIBS), the system comprising:

• an LIBS device outputting spectral data of a metal sample by irradiating the metal sample with a laser;
• a signal processing device discriminating a type of metal sample using the spectral data and LIBS library information;
• and
• a discharge device discharging metals to different collection boxes according to the discriminated metal type,
• wherein the signal processing device sets multiple clusters according to the LIBS library information and a metal component distribution, calculates a probability that the spectral data will belong to each of the multiple clusters using first regress component analysis using first training data for the spectral data, performs second regression component analysis using second training data which belongs to each cluster with respect the spectral data, and discriminates the type of metal sample using the calculated probability and the second regression component analysis result.