Magnesium Removal from Concentrated Nickel Solution by Solvent Extraction Using Cyanex 272

Zhu Zhaowu; Zhang Jian; Yi Aifei; Su Hui; Wang Lina; Qi Tao

doi:doi:10.11648/j.ijmpem.20190402.11

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Magnesium Removal from Concentrated Nickel Solution by Solvent Extraction Using Cyanex 272

Zhu Zhaowu, Zhang Jian, Yi Aifei, Su Hui, Wang Lina, Qi Tao

Published in International Journal of Mineral Processing and Extractive Metallurgy (Volume 4, Issue 2)

Received: 4 May 2019 Accepted: 10 June 2019 Published: 25 June 2019

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Abstract

The refinery of mixed hydroxide precipitate (MHP) from nickel laterite processing by acidic re-leaching will generate a concentrated nickel solution containing some magnesium difficult to remove. Fluorite precipitation method is often used for nickel purification from magnesium contamination, causing serious risk of environmental pollution. Solvent extraction technology has obvious advantages in metal separation and purification which has been widely used in nickel cobalt industries. Magnesium separation from nickel in a synthetic re-leach solution by solvent extraction using Cyanex 272 (bis (2, 4, 4-trimethylpentyl) phosphinic acid)) and its analogue of P 507 (2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester) was studied. It was found that the separation factor of magnesium over nickel reached higher than 200 at pH 5.5, which is much better than that of P507 with the maximum separation factor of 88 at pH 5.0. The conditions including equilibrium pH, organic concentration and A/O ratio for metal extraction and separation of Mg and Ca from nickel with Cyanex 272 in a concentrated synthetic nickel solution were optimized. A five-stage counter-current batch continuous test was carried out with Cyanex 272 under optimized conditions. More than 99% of the magnesium was removed from the synthetic solution containing 3.4 g/L Mg and 106 g/L Ni using 0.5 M Cyanex 272, leaving only 38 mg/L Mg in the purified nickel solution, which is suitable for the electrowinning.

Published in	International Journal of Mineral Processing and Extractive Metallurgy (Volume 4, Issue 2)
DOI	10.11648/j.ijmpem.20190402.11
Page(s)	36-43
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Solvent Extraction, Cyanex 272, MHP, Magnesium, Nickel

References

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APA Style

Zhu Zhaowu, Zhang Jian, Yi Aifei, Su Hui, Wang Lina, et al. (2019). Magnesium Removal from Concentrated Nickel Solution by Solvent Extraction Using Cyanex 272. International Journal of Mineral Processing and Extractive Metallurgy, 4(2), 36-43. https://doi.org/10.11648/j.ijmpem.20190402.11

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ACS Style

Zhu Zhaowu; Zhang Jian; Yi Aifei; Su Hui; Wang Lina, et al. Magnesium Removal from Concentrated Nickel Solution by Solvent Extraction Using Cyanex 272. Int. J. Miner. Process. Extr. Metall. 2019, 4(2), 36-43. doi: 10.11648/j.ijmpem.20190402.11

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AMA Style

Zhu Zhaowu, Zhang Jian, Yi Aifei, Su Hui, Wang Lina, et al. Magnesium Removal from Concentrated Nickel Solution by Solvent Extraction Using Cyanex 272. Int J Miner Process Extr Metall. 2019;4(2):36-43. doi: 10.11648/j.ijmpem.20190402.11

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@article{10.11648/j.ijmpem.20190402.11,
  author = {Zhu Zhaowu and Zhang Jian and Yi Aifei and Su Hui and Wang Lina and Qi Tao},
  title = {Magnesium Removal from Concentrated Nickel Solution by Solvent Extraction Using Cyanex 272},
  journal = {International Journal of Mineral Processing and Extractive Metallurgy},
  volume = {4},
  number = {2},
  pages = {36-43},
  doi = {10.11648/j.ijmpem.20190402.11},
  url = {https://doi.org/10.11648/j.ijmpem.20190402.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmpem.20190402.11},
  abstract = {The refinery of mixed hydroxide precipitate (MHP) from nickel laterite processing by acidic re-leaching will generate a concentrated nickel solution containing some magnesium difficult to remove. Fluorite precipitation method is often used for nickel purification from magnesium contamination, causing serious risk of environmental pollution. Solvent extraction technology has obvious advantages in metal separation and purification which has been widely used in nickel cobalt industries. Magnesium separation from nickel in a synthetic re-leach solution by solvent extraction using Cyanex 272 (bis (2, 4, 4-trimethylpentyl) phosphinic acid)) and its analogue of P 507 (2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester) was studied. It was found that the separation factor of magnesium over nickel reached higher than 200 at pH 5.5, which is much better than that of P507 with the maximum separation factor of 88 at pH 5.0. The conditions including equilibrium pH, organic concentration and A/O ratio for metal extraction and separation of Mg and Ca from nickel with Cyanex 272 in a concentrated synthetic nickel solution were optimized. A five-stage counter-current batch continuous test was carried out with Cyanex 272 under optimized conditions. More than 99% of the magnesium was removed from the synthetic solution containing 3.4 g/L Mg and 106 g/L Ni using 0.5 M Cyanex 272, leaving only 38 mg/L Mg in the purified nickel solution, which is suitable for the electrowinning.},
 year = {2019}
}

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TY  - JOUR
T1  - Magnesium Removal from Concentrated Nickel Solution by Solvent Extraction Using Cyanex 272
AU  - Zhu Zhaowu
AU  - Zhang Jian
AU  - Yi Aifei
AU  - Su Hui
AU  - Wang Lina
AU  - Qi Tao
Y1  - 2019/06/25
PY  - 2019
N1  - https://doi.org/10.11648/j.ijmpem.20190402.11
DO  - 10.11648/j.ijmpem.20190402.11
T2  - International Journal of Mineral Processing and Extractive Metallurgy
JF  - International Journal of Mineral Processing and Extractive Metallurgy
JO  - International Journal of Mineral Processing and Extractive Metallurgy
SP  - 36
EP  - 43
PB  - Science Publishing Group
SN  - 2575-1859
UR  - https://doi.org/10.11648/j.ijmpem.20190402.11
AB  - The refinery of mixed hydroxide precipitate (MHP) from nickel laterite processing by acidic re-leaching will generate a concentrated nickel solution containing some magnesium difficult to remove. Fluorite precipitation method is often used for nickel purification from magnesium contamination, causing serious risk of environmental pollution. Solvent extraction technology has obvious advantages in metal separation and purification which has been widely used in nickel cobalt industries. Magnesium separation from nickel in a synthetic re-leach solution by solvent extraction using Cyanex 272 (bis (2, 4, 4-trimethylpentyl) phosphinic acid)) and its analogue of P 507 (2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester) was studied. It was found that the separation factor of magnesium over nickel reached higher than 200 at pH 5.5, which is much better than that of P507 with the maximum separation factor of 88 at pH 5.0. The conditions including equilibrium pH, organic concentration and A/O ratio for metal extraction and separation of Mg and Ca from nickel with Cyanex 272 in a concentrated synthetic nickel solution were optimized. A five-stage counter-current batch continuous test was carried out with Cyanex 272 under optimized conditions. More than 99% of the magnesium was removed from the synthetic solution containing 3.4 g/L Mg and 106 g/L Ni using 0.5 M Cyanex 272, leaving only 38 mg/L Mg in the purified nickel solution, which is suitable for the electrowinning.
VL  - 4
IS  - 2
ER  -

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Author Information

Zhu Zhaowu

Hydrometallurgy Clean Production Technology National Engineering Laboratory, Institute of Process Engineering Chinese Academy of Science, Beijing, China
Zhang Jian

Hydrometallurgy Clean Production Technology National Engineering Laboratory, Institute of Process Engineering Chinese Academy of Science, Beijing, China
Yi Aifei

Hydrometallurgy Clean Production Technology National Engineering Laboratory, Institute of Process Engineering Chinese Academy of Science, Beijing, China
Su Hui

Hydrometallurgy Clean Production Technology National Engineering Laboratory, Institute of Process Engineering Chinese Academy of Science, Beijing, China
Wang Lina

Hydrometallurgy Clean Production Technology National Engineering Laboratory, Institute of Process Engineering Chinese Academy of Science, Beijing, China
Qi Tao

Hydrometallurgy Clean Production Technology National Engineering Laboratory, Institute of Process Engineering Chinese Academy of Science, Beijing, China

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Zhu Zhaowu, Zhang Jian, Yi Aifei, Su Hui, Wang Lina, et al. (2019). Magnesium Removal from Concentrated Nickel Solution by Solvent Extraction Using Cyanex 272. International Journal of Mineral Processing and Extractive Metallurgy, 4(2), 36-43. https://doi.org/10.11648/j.ijmpem.20190402.11

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ACS Style

Zhu Zhaowu; Zhang Jian; Yi Aifei; Su Hui; Wang Lina, et al. Magnesium Removal from Concentrated Nickel Solution by Solvent Extraction Using Cyanex 272. Int. J. Miner. Process. Extr. Metall. 2019, 4(2), 36-43. doi: 10.11648/j.ijmpem.20190402.11

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AMA Style

Zhu Zhaowu, Zhang Jian, Yi Aifei, Su Hui, Wang Lina, et al. Magnesium Removal from Concentrated Nickel Solution by Solvent Extraction Using Cyanex 272. Int J Miner Process Extr Metall. 2019;4(2):36-43. doi: 10.11648/j.ijmpem.20190402.11

Copy | Download

@article{10.11648/j.ijmpem.20190402.11,
  author = {Zhu Zhaowu and Zhang Jian and Yi Aifei and Su Hui and Wang Lina and Qi Tao},
  title = {Magnesium Removal from Concentrated Nickel Solution by Solvent Extraction Using Cyanex 272},
  journal = {International Journal of Mineral Processing and Extractive Metallurgy},
  volume = {4},
  number = {2},
  pages = {36-43},
  doi = {10.11648/j.ijmpem.20190402.11},
  url = {https://doi.org/10.11648/j.ijmpem.20190402.11},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmpem.20190402.11},
  abstract = {The refinery of mixed hydroxide precipitate (MHP) from nickel laterite processing by acidic re-leaching will generate a concentrated nickel solution containing some magnesium difficult to remove. Fluorite precipitation method is often used for nickel purification from magnesium contamination, causing serious risk of environmental pollution. Solvent extraction technology has obvious advantages in metal separation and purification which has been widely used in nickel cobalt industries. Magnesium separation from nickel in a synthetic re-leach solution by solvent extraction using Cyanex 272 (bis (2, 4, 4-trimethylpentyl) phosphinic acid)) and its analogue of P 507 (2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester) was studied. It was found that the separation factor of magnesium over nickel reached higher than 200 at pH 5.5, which is much better than that of P507 with the maximum separation factor of 88 at pH 5.0. The conditions including equilibrium pH, organic concentration and A/O ratio for metal extraction and separation of Mg and Ca from nickel with Cyanex 272 in a concentrated synthetic nickel solution were optimized. A five-stage counter-current batch continuous test was carried out with Cyanex 272 under optimized conditions. More than 99% of the magnesium was removed from the synthetic solution containing 3.4 g/L Mg and 106 g/L Ni using 0.5 M Cyanex 272, leaving only 38 mg/L Mg in the purified nickel solution, which is suitable for the electrowinning.},
 year = {2019}
}

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TY  - JOUR
T1  - Magnesium Removal from Concentrated Nickel Solution by Solvent Extraction Using Cyanex 272
AU  - Zhu Zhaowu
AU  - Zhang Jian
AU  - Yi Aifei
AU  - Su Hui
AU  - Wang Lina
AU  - Qi Tao
Y1  - 2019/06/25
PY  - 2019
N1  - https://doi.org/10.11648/j.ijmpem.20190402.11
DO  - 10.11648/j.ijmpem.20190402.11
T2  - International Journal of Mineral Processing and Extractive Metallurgy
JF  - International Journal of Mineral Processing and Extractive Metallurgy
JO  - International Journal of Mineral Processing and Extractive Metallurgy
SP  - 36
EP  - 43
PB  - Science Publishing Group
SN  - 2575-1859
UR  - https://doi.org/10.11648/j.ijmpem.20190402.11
AB  - The refinery of mixed hydroxide precipitate (MHP) from nickel laterite processing by acidic re-leaching will generate a concentrated nickel solution containing some magnesium difficult to remove. Fluorite precipitation method is often used for nickel purification from magnesium contamination, causing serious risk of environmental pollution. Solvent extraction technology has obvious advantages in metal separation and purification which has been widely used in nickel cobalt industries. Magnesium separation from nickel in a synthetic re-leach solution by solvent extraction using Cyanex 272 (bis (2, 4, 4-trimethylpentyl) phosphinic acid)) and its analogue of P 507 (2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester) was studied. It was found that the separation factor of magnesium over nickel reached higher than 200 at pH 5.5, which is much better than that of P507 with the maximum separation factor of 88 at pH 5.0. The conditions including equilibrium pH, organic concentration and A/O ratio for metal extraction and separation of Mg and Ca from nickel with Cyanex 272 in a concentrated synthetic nickel solution were optimized. A five-stage counter-current batch continuous test was carried out with Cyanex 272 under optimized conditions. More than 99% of the magnesium was removed from the synthetic solution containing 3.4 g/L Mg and 106 g/L Ni using 0.5 M Cyanex 272, leaving only 38 mg/L Mg in the purified nickel solution, which is suitable for the electrowinning.
VL  - 4
IS  - 2
ER  -

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