title: Value analysis of neodymium content in shredder feed: toward enabling the feasibility of rare earth magnet recycling.
abstract: In order to facilitate the development of recycling technologies for rare earth magnets from postconsumer products, we present herein an analysis of the neodymium (Nd) content in shredder scrap. This waste stream has been chosen on the basis of current business practices for the recycling of steel, aluminum, and copper from cars and household appliances, which contain significant amounts of rare earth magnets. Using approximations based on literature data, we have calculated the average Nd content in the ferrous shredder product stream to be between 0.13 and 0.29 kg per ton of ferrous scrap. A value analysis considering rare earth metal prices between 2002 and 2013 provides values between $1.32 and $145 per ton of ferrous scrap for this material, if recoverable as pure Nd metal. Furthermore, we present an analysis of the content and value of other rare earths (Pr, Dy, Tb).
authors.affiliation: Center for Resource Recovery and Recycling, Department of Chemistry and Biochemistry & Department of Mechanical Engineering, 100 Institute Road, Worcester Polytechnic Institute , Worcester, Massachusetts 01609, United States.
authors.forename: H M Dhammika
authors.initials: HM
authors.lastname: Bandara
authors.forename: Julia W
authors.initials: JW
authors.lastname: Darcy
authors.forename: Diran
authors.initials: D
authors.lastname: Apelian
authors.forename: Marion H
authors.initials: MH
authors.lastname: Emmert
mesh_terms: D001336:Automobiles; D004560:Electricity; D005240:Feasibility Studies; D005296:Ferrous Compounds / Q000032:analysis; D059346:Magnets; D009354:Neodymium / Q000032:analysis*; D059027:Recycling; D014866:Waste Products / Q000032:analysis*
chemical_list: D005296:Ferrous Compounds; D014866:Waste Products; D009354:Neodymium