Extraction and separation of nickel and cobalt from saprolite laterite ore by microwave-assisted hydrothermal leaching and chemical deposition

Yan Zhao, Jian-ming Gao, Yi Yue, Ben Peng, Zaiqing Que, Min Guo (Corresponding Author), Mei Zhang

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)

Abstract

Extraction and separation of nickel and cobalt from saprolite laterite ore were studied by using a method of microwave-assisted hydrothermal leaching and chemical deposition. The effects of leaching temperature and time on the extraction efficiencies of Ni2+ and Co2+ were investigated in detail under microwave conditions. It is shown that the extraction efficiencies of Ni2+ and Co2+ from the ore pre-roasted at 300°C for 5 h were 89.19% and 61.89% when the leaching temperature and time were about 70°C and 60 min, respectively. For the separation process of Ni and Co, the separation of main chemical components was performed by adjusting the pH values of sulfuric leaching solutions using a NaOH solution based on the different pH values of precipitation for metal hydroxides. The final separation efficiencies of Ni and Co were 77.29% and 65.87%, respectively. Furthermore, the separation efficiencies of Fe of 95.36% and Mg of 92.2% were also achieved at the same time.
Original languageEnglish
Pages (from-to)612-619
JournalInternational Journal of Minerals, Metallurgy and Materials
Volume20
Issue number7
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

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saprolite
laterite
Cobalt
Nickel
cobalt
Ores
Leaching
nickel
Microwaves
leaching
Hydroxides
hydroxide
Metals
temperature
chemical
microwave
ore
Temperature
metal

Cite this

@article{6120154a8d5a40c0a619d10b9da91c42,
title = "Extraction and separation of nickel and cobalt from saprolite laterite ore by microwave-assisted hydrothermal leaching and chemical deposition",
abstract = "Extraction and separation of nickel and cobalt from saprolite laterite ore were studied by using a method of microwave-assisted hydrothermal leaching and chemical deposition. The effects of leaching temperature and time on the extraction efficiencies of Ni2+ and Co2+ were investigated in detail under microwave conditions. It is shown that the extraction efficiencies of Ni2+ and Co2+ from the ore pre-roasted at 300°C for 5 h were 89.19{\%} and 61.89{\%} when the leaching temperature and time were about 70°C and 60 min, respectively. For the separation process of Ni and Co, the separation of main chemical components was performed by adjusting the pH values of sulfuric leaching solutions using a NaOH solution based on the different pH values of precipitation for metal hydroxides. The final separation efficiencies of Ni and Co were 77.29{\%} and 65.87{\%}, respectively. Furthermore, the separation efficiencies of Fe of 95.36{\%} and Mg of 92.2{\%} were also achieved at the same time.",
author = "Yan Zhao and Jian-ming Gao and Yi Yue and Ben Peng and Zaiqing Que and Min Guo and Mei Zhang",
year = "2013",
doi = "10.1007/s12613-013-0774-8",
language = "English",
volume = "20",
pages = "612--619",
journal = "International Journal of Minerals, Metallurgy and Materials",
issn = "1674-4799",
publisher = "University of Science and Technology Beijing",
number = "7",

}

Extraction and separation of nickel and cobalt from saprolite laterite ore by microwave-assisted hydrothermal leaching and chemical deposition. / Zhao, Yan; Gao, Jian-ming; Yue, Yi; Peng, Ben; Que, Zaiqing; Guo, Min (Corresponding Author); Zhang, Mei.

In: International Journal of Minerals, Metallurgy and Materials, Vol. 20, No. 7, 2013, p. 612-619.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Extraction and separation of nickel and cobalt from saprolite laterite ore by microwave-assisted hydrothermal leaching and chemical deposition

AU - Zhao, Yan

AU - Gao, Jian-ming

AU - Yue, Yi

AU - Peng, Ben

AU - Que, Zaiqing

AU - Guo, Min

AU - Zhang, Mei

PY - 2013

Y1 - 2013

N2 - Extraction and separation of nickel and cobalt from saprolite laterite ore were studied by using a method of microwave-assisted hydrothermal leaching and chemical deposition. The effects of leaching temperature and time on the extraction efficiencies of Ni2+ and Co2+ were investigated in detail under microwave conditions. It is shown that the extraction efficiencies of Ni2+ and Co2+ from the ore pre-roasted at 300°C for 5 h were 89.19% and 61.89% when the leaching temperature and time were about 70°C and 60 min, respectively. For the separation process of Ni and Co, the separation of main chemical components was performed by adjusting the pH values of sulfuric leaching solutions using a NaOH solution based on the different pH values of precipitation for metal hydroxides. The final separation efficiencies of Ni and Co were 77.29% and 65.87%, respectively. Furthermore, the separation efficiencies of Fe of 95.36% and Mg of 92.2% were also achieved at the same time.

AB - Extraction and separation of nickel and cobalt from saprolite laterite ore were studied by using a method of microwave-assisted hydrothermal leaching and chemical deposition. The effects of leaching temperature and time on the extraction efficiencies of Ni2+ and Co2+ were investigated in detail under microwave conditions. It is shown that the extraction efficiencies of Ni2+ and Co2+ from the ore pre-roasted at 300°C for 5 h were 89.19% and 61.89% when the leaching temperature and time were about 70°C and 60 min, respectively. For the separation process of Ni and Co, the separation of main chemical components was performed by adjusting the pH values of sulfuric leaching solutions using a NaOH solution based on the different pH values of precipitation for metal hydroxides. The final separation efficiencies of Ni and Co were 77.29% and 65.87%, respectively. Furthermore, the separation efficiencies of Fe of 95.36% and Mg of 92.2% were also achieved at the same time.

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DO - 10.1007/s12613-013-0774-8

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JO - International Journal of Minerals, Metallurgy and Materials

JF - International Journal of Minerals, Metallurgy and Materials

SN - 1674-4799

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