Circulation of sodium sulfate solution produced during nimh battery waste processing

A. Porvali, V. Agarwal, M. Lundström

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientificvertaisarvioitu

Abstrakti

Hydrometallurgical recovery of rare earth elements (REE) from NiMH battery waste can be performed using sulfuric acid leaching followed by selective precipitation as double salt (REENa(SO4)2·H2O) by adding Na2SO4 as a precipitating agent. The formed double salts can be treated further with NaOH solution to form REE hydroxides. This study focuses on metamodeling of a simulated flowsheet with design of experiments (DOE). Based on literature survey, a process flowsheet was developed using HSC Sim software. The created flowsheet focuses on circulation of solution containing Na+, K+, SO2-4 ions and impurities liberated in the NaOH treatment of double salt precipitate. The effect of seven parameters (P1-P7) on seven responses (R1-R7) were modeled using central composite design (CCD).

AlkuperäiskieliEnglanti
Otsikko2019 SME Annual Conference and Expo and CMA 121st National Western Mining Conference
KustantajaSociety for Mining, Metallurgy, and Exploration, Inc.
ISBN (elektroninen)9781510884663
TilaJulkaistu - 1 tammikuuta 2019
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaSME Annual Conference & Expo - Denver, Yhdysvallat
Kesto: 24 helmikuuta 201927 helmikuuta 2019

Julkaisusarja

Nimi2019 SME Annual Conference and Expo and CMA 121st National Western Mining Conference

Conference

ConferenceSME Annual Conference & Expo
MaaYhdysvallat
KaupunkiDenver
Ajanjakso24/02/201927/02/2019

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