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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Solar Cell Silicon
Presentation Title Electrodynamic Eddy Current Separation of End-of-Life PV Materials
Author(s) York R. Smith, James R. Nagel, Raj K. Rajamani
On-Site Speaker (Planned) York R. Smith
Abstract Scope In this work, we discuss the efficacy of Electrodynamic Eddy Current Separation (EECS) techniques to recover valuable materials from end-of-life solar panels. Traditional rotary-based eddy current separators are capable of excitation frequencies of ~1 kHz or less and struggle to economically separate particles smaller than ~1 cm. A new design of eddy current separators has been developed at the University of Utah, which has no mechanically moving parts. This design is capable of excitation frequencies up to 50 kHz, enabiling sorting of particles as small as 1.0 mm. Recently, we have been successful in separating mixtures of Si/Al and CdTe/Al particles (1~3 mm) with recovery and grades greater than 85%, an energy demand of ~0.07 kWh/kg of sorted material, and throughput of roughly 10 kg/h. Current and future challenges utilizing this method for valuable material recovery from end-of-life solar panels are discussed.
Proceedings Inclusion? Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)


Characterization of Composition, Morphology, and Structure of Disi Raw Sandstones in Jordan
Effect of Magnesium Addition on Removal of Impurities from Silicon by Hydrometallurgical Treatment
Electrodeposition of Solar Grade Silicon on Graphite in Molten CaCl2
Electrodynamic Eddy Current Separation of End-of-Life PV Materials
Evaporation Removal of Boron in Molten Silicon Using Reactive Fluxes
Influence of Oxygen Content on the Wettability of Silicon on Graphite
Investigation on Quartz Crucibles for Monocrystalline Silicon Ingots for Solar Cells
Particle Separation in Silicon Ingot Casting Using AC Magnetic Field
Phase Analysis of the Si-O2 System
Study on Producing Solar Grade Silicon by Carbothermal Reduction of Andalusite Ore
Study on the Segregation Behavior of Impurities during Solvent Refining Process
Topological Impurity Segregation at Faceted Silicon Grain Boundaries

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