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- W2891756464 abstract "In this study, a combined pyrometallurgical and hydrometallurgical technique has been designed and used to recover rare earth mixture elements (REE) and cobalt from a NdFeB magnetic waste. while addressing the cost of reagent and process facility. This process can be adjusted to different magnetic wastes regardless of their compositions. Prior to the leaching, the magnet scrap was pretreated by two rounds of roasting (750°C in air) and a mechanical grinding in between, to convert iron metal to ferric oxide. Subsequent leaching was performed using optimized conditions (pH, temperature and retention time) where the extraction ratio of REE to Fe III is the highest. After removing iron content from the leachate (pH ≈ 3), REE was precipitated selectively and purified further. The produced REE concentrate reaches 99% purity with 85% recovery in a single run. The cobalt oxide was isolated from the PLS as a by-product with 99.8% purity." @default.
- W2891756464 created "2018-09-27" @default.
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- W2891756464 date "2018-01-01" @default.
- W2891756464 modified "2023-09-23" @default.
- W2891756464 title "Extraction and Purification of Rare Earth Elements and Cobalt from NdFeB Magnet Wastes" @default.
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- W2891756464 doi "https://doi.org/10.1007/978-3-319-95022-8_196" @default.
- W2891756464 hasPublicationYear "2018" @default.
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