Recycling critical raw materials from waste electronic equipment

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IV Recycling critical raw materials from waste electronic equipment 5.2 Summary of critical metals in LED lights 52 5.3 Market data for LED lights 53 5.4 Collection rates for LED lights 57 5.5 Status of recycling technology for LED lights 58 5.6 Potential for optimization in the recycling chain 58 6 Refining processes for electronic waste fractions containing important resources 58 6.1 Precious metals 59 6.2 Cobalt 61 6.3 Rare earths 62 6.4 Gallium, indium 63 6.5 Tantalum 64 7 Summary and recommendations for action 65 8 References 74
Recycling critical raw materials from waste electronic equipment List of tables Table 1: Display technologies and their principal areas of application 3 Table 2: Published values on film thickness and indium content of LCD displays. 4 Table 3: Approximation calculation of indium content in LCD displays 4 Table 4: Mean indium content of different display devices 4 Table 5: Assumptions and data for estimating the percentage of rare earths in the CCFL background illumination of LCD screens 6 Table 6: Estimated mean weights of rare earth metals in LCD displays with CCFL background illumination 7 Table 7: Assumptions and data for estimating the content of rare earths (incl. indium and gallium) in the LED background illumination of LCD screens. 8 Table 8: Estimated mean weights of rare earth metals (incl. indium and gallium) in LCD displays with CCFL background illumination 8 Table 9: Weight and concentration of precious metals in PCBs in flat screens. 8 Table 10: Quantities of precious metals in the PCBs of flat screens 9 Table 11: Sales figures for equipment with LCD displays (Germany 2010), the market share of devices with background illumination using white LEDs (WLEDs) and the estimated number of WLEDs used in the background illumination per device (see also Section 5.3 5.3) 10 Table 12: Mean weight of critical raw materials in LCD PC monitors (private market sector) 10 Table 13: Mean weight of critical raw materials in LCD televisions 11 Table 14: Sales, percentage change against previous year and average price for TV sets (private market) in 2010 (CEMIX 2011) 12 Table 15: Weight and concentration of precious metals in PCBs in notebooks 20 Table 16: Quantities of precious metals in the PCBs of a notebook 21 Table 17: Precious metal concentrations in hard disk drive platters 22 Table 18: Quantity of precious metals in the hard disk drive platters of a notebook 23 Table 19: Applications and weights of rare earth magnets in notebooks 25 Table 20: Concentrations of rare earths in magnets in notebooks 26 Table 21: Amounts of rare earths in magnets in notebooks 27 Table 22: Sales figures for notebooks used in the private sector (Germany 2010), the market share of devices with background illumination using white LEDs (WLEDs) and the estimated number of WLEDs V
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