Lee, Jae-chun and Jha, Manis K and Panda, Rekha and Choubey, Pankaj K and Kumari , Archana and Kim, Tai Gyun (2021) Developing Feasible Processes for the Total Recycling of WEEE to Recover Rare Metals. Rare Metal Technology 2021 .
The present paper reports several application-oriented processes developed for the recovery of various non-ferrous (Cu, Ni, Al, Pb, Sn), rare (Li, Co, In), precious (Au, Ag, Pt, and Pd), and rare earth metals (Nd, Ce, La, Y, Eu) from various urban ores, i.e., waste electrical and electronic equipments (WEEE), liquid crystal displays (LCD), batteries, magnets, fluorescent tubes, etc. Initially, the WEEE and various wastes were classified and dismantled. Further, the materials were pretreated to separate plastics, epoxy, ceramics, rubber, iron cover, and metallic concentrates. Based on their properties, plastic, epoxy and rubber could be either pyrolysed for production of marketable low-density oil and saleable activated carbon or directly recycled. The pre-treated metallic concentrates were processed by hydrometallurgical techniques, i.e., leaching, solvent extraction, ion-exchange, electro-winning for maximum recovery of metals. Various flow sheets discussed for rare metal extraction and processing strictly comply with environmental regulations
|Uncontrolled Keywords:||Rare metals · E-waste · Recycling · Hydrometallurgy|
|Divisions:||Metal Extraction and Forming|
|Deposited By:||Dr. MK Jha|
|Deposited On:||01 Jun 2023 12:28|
|Last Modified:||01 Jun 2023 12:28|
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