Projekteja vuodessa
Abstrakti
In this research, the recycling of industrially collected and crushed nickel metal hydride battery waste, rich in valuable metals such as Ni and rare earth elements (REE), was investigated. The crushed waste was characterized based on elemental distribution per particle size class and density. Although issues with sieving, such as agglomeration of shredded separator fibers, were observed, a good separation of Fe and plastics could be achieved by using a 1-mm sieve size. It was observed that, as the waste battery particles were washed with water, some organic compounds were dissolved. Acid consumption of 14 mol H+ ions per 1 kg of battery sample (sieve fraction—1 mm) was determined to be sufficient to achieve the desired final pH of < 1. Selectivity of the leaching at higher equilibrium pH was also investigated by using dilute H2SO4. Pregnant leach solution rich in Ni (46 g/L) and REEs (La: 9 g/L, Ce: 7.5 g/L, Pr: 1.4 g/L, Sm: 0.29 g/L, Y: 0.17 g/L) was obtained and REE precipitation was investigated as a function of dilute Na2SO4 solution concentration (0.01–0.5 M) at a temperature of 50 °C. The best precipitation efficiency was achieved with a Na:REE ratio of 9.1, which resulted in a > 99% precipitation efficiency for the REEs.
Alkuperäiskieli | Englanti |
---|---|
Sivut | 78-90 |
Sivumäärä | 13 |
Julkaisu | Journal of Sustainable Metallurgy |
Vuosikerta | 6 |
Numero | 1 |
DOI - pysyväislinkit | |
Tila | Julkaistu - 1 maalisk. 2020 |
OKM-julkaisutyyppi | A1 Julkaistu artikkeli, soviteltu |
Sormenjälki
Sukella tutkimusaiheisiin 'Nickel Metal Hydride Battery Waste : Mechano-hydrometallurgical Experimental Study on Recycling Aspects'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.Projektit
- 5 Päättynyt
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BATCIRCLE: Finland-based Circular Ecosystem of Battery Metals
Lundström, M., Chernyaev, A., Kalliomäki, T., Liu, F., Wilson, B., Khalid, M. K., Hu, F., Aromaa, J., Aromaa, R., Karppinen, A., Forde, G., Ke, P., Porvali, A., Palomäki, H., Partinen, J., Seisko, S., Ruismäki, R., Revitzer, H., Zhang, J., Zou, Y., Shukla, S., Rinne, M., Peng, C., Sahlman, M., Wang, Z. & Lampinen, A.
01/01/2019 → 30/04/2021
Projekti: Business Finland: Other research funding
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MINEWEE: MINEWEEE
Liu, F., Lundström, M., Mohanty Uditsurya, U., Aaltonen, M., Agarwal, V. & Revitzer, H.
17/01/2017 → 31/12/2018
Projekti: Business Finland: Other research funding
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Korkean jalostusarvon materiaalit suljetussa raaka-ainekierrossa
Lundström, M., Wilson, B., Aaltonen, M., Peng, C., Porvali, A. & Revitzer, H.
01/04/2016 → 31/08/2019
Projekti: Academy of Finland: Strategic research funding