Abstract
This article outlines an alternative flowsheet for the purification of a multi-metal industrial sidestream (16.3 g/l Ni, 0.7 g/l Co, 0.6 g/l Ca and 1.6 g/l Mg) to allow high-purity nickel recovery. The methodology comprises an initial evaporation step to achieve Ca removal followed by impurity (Ca, Mg) and valuable (Co, Ni) element separation via two-step solvent extraction with organophosphorus extractants. Results indicate that > 80% of Ca is selectively removed as CaSO4 center dot 2H(2)O by evaporation with a concentration degree > 6. In the following treatment, 90% of residual Ca (0.6 g/l) can be selectively extracted with Na-D(2)EHPA. The subsequent solvent extraction step with Na-Cyanex 272 separates Co (> 99%) and Mg (> 95%). The resultant nickel sulfate solution (61.7 g/l Ni, 0.3 g/l Mg and Co 0.007 g/l) of > 99.5% purity can be directly integrated into state-of-the-art nickel recovery processes.
| Original language | English |
|---|---|
| Number of pages | 8 |
| Journal | JOM |
| DOIs | |
| Publication status | Published - 4 Dec 2019 |
| MoE publication type | A1 Journal article-refereed |
Funding
Open access funding provided by Aalto University. This work was supported financially by the BATCircle project (Grant No. 4853/31/2018) funded by Business Finland and the Chinese Scholar Council (CSC). The authors appreciate the use of facilities provided by the Academy of Finland's RawMatTERS Finland Infrastructure (RAMI-FIRI) based at Aalto University and also thank Hannu Revitzer for performing the ICP analyses. In addition, the Anhui Province Research and Development Innovation Project for Automotive Power Battery Efficient Recycling Systems is gratefully acknowledged.
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 13 Climate Action
Keywords
- DIRECT SOLVENT-EXTRACTION
- SODIUM-SALTS
- SULFATE
- PURIFICATION
- COBALT
- SEPARATION
Fingerprint
Dive into the research topics of 'High Purity Nickel Recovery from an Industrial Sidestream Using Concentration and Liquid-Liquid Extraction Techniques'. Together they form a unique fingerprint.Projects
- 1 Finished
-
BATCIRCLE: Finland-based Circular Ecosystem of Battery Metals
Lundström, M. (Principal investigator), Peng, C. (Project Member), Shukla, S. (Project Member), Sahlman, M. (Project Member), Helin, S. (Project Member), Zou, Y. (Project Member), Forde, G. (Project Member), Ruismäki, R. (Project Member), Wang, Z. (Project Member), Liu, F. (Project Member), Lampinen, A. (Project Member), Seisko, S. (Project Member), Revitzer, H. (Project Member), Kivinen, V. (Project Member), Chernyaev, A. (Project Member), Khalid, M. K. (Project Member), Ke, P. (Project Member), Karppinen, A. (Project Member), Hu, F. (Project Member), Porvali, A. (Project Member), Rinne, M. (Project Member), Wilson, B. (Project Member), Kalliomäki, T. (Project Member), Angerla, H. (Project Member), Palomäki, H. (Project Member), Aromaa, J. (Project Member), Aromaa-Stubb, R. (Project Member), Zhang, J. (Project Member) & Partinen, J. (Project Member)
01/01/2019 → 30/04/2021
Project: Business Finland: Other research funding
Equipment
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Raw Materials Research Infrastructure
Karppinen, M. (Manager)
School of Chemical EngineeringFacility/equipment: Facility
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