Laser-induced breakdown spectroscopy for real-time zinc detection in steel recycling
A LIBS-based system for real-time zinc detection in steel recycling to support contamination-free production. Using rapid, non-contact elemental analysis, it enables automated inline sorting of zinc-coated scrap with reported >95% accuracy and is designed for modular integration into existing production lines. The approach targets improved performance over handheld XRF for zinc identification to reduce contamination risk in downstream processing.
Overview
Laser Universal LLC presents a LIBS (Laser-Induced Breakdown Spectroscopy) solution for real-time zinc detection in steel recycling processes. The technology is intended to identify zinc-coated scrap to help prevent contamination in downstream processing. With rapid, non-contact elemental analysis, LIBS is positioned as an improvement over handheld XRF methods, offering over 95% accuracy for sorting zinc-coated scrap.
Technical specifications
The LIBS system operates by inducing plasma with a laser and performing spectral analysis of elemental composition, including zinc detection at specific wavelengths (213.9 nm, 330.3 nm). Key features include:
- Real-time, automated sorting of zinc-coated scrap
- Non-contact and high-speed analysis suitable for inline detection
- Modular design for integration into existing production lines
- Low maintenance requirements with straightforward cleaning and calibration
Technology readiness level
The LIBS technology is currently at Technology Readiness Level 6, indicating it has been proven in a relevant environment. A future validation plan is described to design, prototype, and optimize the system over 12 weeks, with the goal of deployment and achieving the desired accuracy and operational targets.
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