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- W2807329829 endingPage "2027" @default.
- W2807329829 startingPage "2018" @default.
- W2807329829 abstract "Nickel–metal hydride (NiMH) batteries contain high amount of industrial metals, especially iron, nickel, cobalt and rare earth elements. Although the battery waste is a considerable secondary source for metal and chemical industries, a recycling process requires a suitable pretreatment method before proceeding with recovery step to reclaim all valuable elements. In this study, AA- and AAA-type spent NiMH batteries were ground and then sieved for size measurement and classification. Chemical composition of the ground battery black mass and sorted six different size fractions were determined by an analytical technique. Crystal structures of the samples were analyzed by X-ray diffraction. Results show that after mechanical treatment, almost 87 wt% of the spent NiMH batteries are suitable for further recycling steps. Size classification by sieving enriched the iron content of the samples in the coarse fraction which is bigger than 0.25 mm. On the other hand, the amounts of nickel and rare earth elements increased by decreasing sample size, and concentrated in the finer fractions. Anode and cathode active materials that are hydrogen storage alloy and nickel hydroxide were mainly collected in finer size fraction of the battery black mass." @default.
- W2807329829 created "2018-06-13" @default.
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- W2807329829 date "2018-06-07" @default.
- W2807329829 modified "2023-10-18" @default.
- W2807329829 title "Physical separation, mechanical enrichment and recycling-oriented characterization of spent NiMH batteries" @default.
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- W2807329829 doi "https://doi.org/10.1007/s10163-018-0751-4" @default.
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