X-ray Sorting Tool for Electronic Components

Opportunity  

This advancement significantly enhances the economic recycling of rare earth elements and tantalum from waste electrical and electronic equipment. Ongoing studies are also exploring the potential recovery of other metals, paving the way for the recovery of critical metals that would otherwise be discarded. To further enhance efficiency, an artificial intelligence-driven database is being developed to identify elements and precisely assess the elemental composition of electronic components, ensuring accurate valuation of printed circuit boards (PCBs). 

Technology  

Multi-energy X-rays offer an effective method for sorting electronic components based on their chemical composition. This technology facilitates the extraction of batches with high concentrations of elements crucial for recycling, leading to simpler mixtures and more efficient metal recovery processes. The current prototype, at a TRL of 4, demonstrates remarkable accuracy rates of 94.2% and 98.8% for electronic components sized 1–5mm and 5–10mm, respectively, within a 14 kg batch of PCBs. Partnerships are sought to scale up the technology to handle a minimum throughput of 100 kg/h, addressing the growing demand for sustainable recycling solutions. Collaborations with industry leaders and stakeholders are essential to advance this innovation towards widespread implementation, revolutionising electronic waste management and significantly contributing to environmental sustainability. 

Figure 1: Process flow for X-ray sorting of electronic components.

Applications & Advantages  

Main application areas include electronic waste recycling facilities, where precise sorting and recovery of valuable materials are essential.  

Advantages: 

• Achieves sorting accuracy rates of 94.2% and 98.8% for electronic components ranging from 1–5mm and 5–10mm, respectively.
• Facilitates the recovery of critical metals, reducing complexity and costs. 
• Can be scaled for application in large-scale facilities. 
• Promises efficient sorting and recovery, minimising raw material extraction and landfill waste. 
• Improves efficiency, cost-effectiveness and environmental impact for electronic waste recycling.