Home Journals Articles Updates About
CN
image
收藏切换
Purification of Nickel-Cobalt-Iron Rich Leachate and Preparation of Iron Phosphate
收藏切换
PDF
Meishi HU, Jing CHEN, Jun LUO, Guanghui LI, Zhiwei PENG, Xin ZHANG, Yanhu CHEN, Mingjun RAO
Mining and Metallurgical Engineering | 2025, 45(1) : 97 - 102
Less
收藏切换
Mining and Metallurgical Engineering | 2025, 45(1): 97-102
• METALLURGY •
Purification of Nickel-Cobalt-Iron Rich Leachate and Preparation of Iron Phosphate
Full
Meishi HU, Jing CHEN, Jun LUO, Guanghui LI, Zhiwei PENG, Xin ZHANG, Yanhu CHEN, Mingjun RAO
Affiliations
  • School of Minerals Processing & Bioengineering, Central South University, Changsha 410083, Hunan, China
Published: 2025-02-01 doi: 10.3969/j.issn.0253-6099.2025.01.018
Outline
收藏切换

The leachate obtained from the oxidation leach of nickel-cobalt-iron powder with sulfuric acid was taken in the study for preparing iron phosphate. After potential adjustment, Al3+ and Cr3+ in the leachate were removed by neutralization and precipitation to achieve an efficient separation of Fe2+ and Al3+. The purified solution was then oxidized and used to prepare ferric phosphate hydrate by iron precipitation with phosphoric acid. Finally, the purified Ni-Co-rich solution was used to prepare nickel-cobalt hydroxide. It is found that firstly, with pH of the leachate at 4.5, 10 min of reaction at 25 ℃ can lead to the removal rates of Al and Cr reaching 100% and 97.15%, with loss rate of Fe at 2.42%; secondly, the obtained purified solution is subjected to 10-min iron precipitation at 25 ℃ with pH of 2.1, resulting in iron precipitation rate of 97.30%, loss rates of Ni and Co at 0.36% and 0.64%, respectively; the precipitate, amorphous iron phosphate with water of crystallization, is then subjected to 2-h calcination at 700 ℃ and converted to anhydrous FePO4, with both impurity content and iron-phosphorus ratio up to the standard of type I anhydrous iron phosphate in HG/T 4701—2021.

phosphate precipitation  /  iron phosphate  /  oxidation leach  /  iron precipitation  /  impurity removal  /  nickel-cobalt-iron  /  mixed hydroxide precipitate (MHP)
Meishi HU, Jing CHEN, Jun LUO, Guanghui LI, Zhiwei PENG, Xin ZHANG, Yanhu CHEN, Mingjun RAO. Purification of Nickel-Cobalt-Iron Rich Leachate and Preparation of Iron Phosphate[J]. Mining and Metallurgical Engineering, 2025 , 45 (1) : 97 -102 . DOI: 10.3969/j.issn.0253-6099.2025.01.018
Appendix
Less
Year 2025 volume 45 Issue 1
PDF
65
30
Cite this Article
BibTeX
Article Info
doi: 10.3969/j.issn.0253-6099.2025.01.018
  • Receive Date：2024-08-31
  • Online Date：2026-03-17
  • Published：2025-02-01
Article Data
Affiliations
History
  • Received：2024-08-31
Funding
Affiliations
    School of Minerals Processing & Bioengineering, Central South University, Changsha 410083, Hunan, China
References
Share
https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2025.01.018
Share to
QR

Scan QR to access full text

Cite this article
BibTeX
Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
关闭全屏
  • BibTeX
  • EndNote
  • RefWorks
  • TxT
Links
Articles
Latest Articles
Most Read
Collections
Updates
Events
News
Multimedia
About
About Us
Contact
No. 86 Xueyuan South Road, Haidian District, Beijing
100081
010-62199257
qkjq@cast.org.cn

Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House