Simultaneous leaching of rare earth elements and phosphorus from a Chinese phosphate ore using H3PO4

Although phosphate rock has been considered as a potential new rare earth elements (REEs) resource, the recovery of REEs from phosphate rock is impeded by technical challenges and cost issues. This study investigated the effects of operation conditions on the leaching efficiencies of REEs and phosph...

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Autores principales:	Li Zhili, Xie Zhihao, He Dongsheng, Deng Jie, Zhao Hengqin, Li Hongqiang
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	rare earth elements phosphate ore acid leaching phosphoric acid Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/9ffbf6ff519e43c4bb5c521254204c5c
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spelling	oai:doaj.org-article:9ffbf6ff519e43c4bb5c521254204c5c2021-12-05T14:10:49ZSimultaneous leaching of rare earth elements and phosphorus from a Chinese phosphate ore using H3PO42191-955010.1515/gps-2021-0023https://doaj.org/article/9ffbf6ff519e43c4bb5c521254204c5c2021-04-01T00:00:00Zhttps://doi.org/10.1515/gps-2021-0023https://doaj.org/toc/2191-9550Although phosphate rock has been considered as a potential new rare earth elements (REEs) resource, the recovery of REEs from phosphate rock is impeded by technical challenges and cost issues. This study investigated the effects of operation conditions on the leaching efficiencies of REEs and phosphorus from Zhijin phosphate ore, a large phosphate deposit in China. The leaching process overtime was also studied by chemical analysis, scanning electron microscope with energy dispersive spectroscopy (SEM-EDS), and X-ray diffraction (XRD). The results indicated that the REEs from Zhijin phosphate ore were mainly present in fluorapatite and dolomite, and REEs had similar trends of leaching efficiency to those of phosphorus and magnesium. Under the conditions of 25 wt% phosphoric acid concentration in the initial pulp, a weight ratio of liquid to solid of 12 mL/g, a temperature of 60°C, an agitation speed of 220 rpm, and leaching time of 120 min, REEs and phosphorus leaching efficiencies of 97.8% and 99.7% were obtained. Most parts of dissoluble substances were decomposed within 30 min. Chemical analysis, SEM-EDS, and XRD results indicated that leaching efficiencies of minerals in Zhijin phosphate ore increased following the order: quartz, aluminosilicate, pyrite, fluorapatite, dolomite, and calcite.Li ZhiliXie ZhihaoHe DongshengDeng JieZhao HengqinLi HongqiangDe Gruyterarticlerare earth elementsphosphate oreacid leachingphosphoric acidChemistryQD1-999ENGreen Processing and Synthesis, Vol 10, Iss 1, Pp 258-267 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	rare earth elements phosphate ore acid leaching phosphoric acid Chemistry QD1-999
spellingShingle	rare earth elements phosphate ore acid leaching phosphoric acid Chemistry QD1-999 Li Zhili Xie Zhihao He Dongsheng Deng Jie Zhao Hengqin Li Hongqiang Simultaneous leaching of rare earth elements and phosphorus from a Chinese phosphate ore using H3PO4
description	Although phosphate rock has been considered as a potential new rare earth elements (REEs) resource, the recovery of REEs from phosphate rock is impeded by technical challenges and cost issues. This study investigated the effects of operation conditions on the leaching efficiencies of REEs and phosphorus from Zhijin phosphate ore, a large phosphate deposit in China. The leaching process overtime was also studied by chemical analysis, scanning electron microscope with energy dispersive spectroscopy (SEM-EDS), and X-ray diffraction (XRD). The results indicated that the REEs from Zhijin phosphate ore were mainly present in fluorapatite and dolomite, and REEs had similar trends of leaching efficiency to those of phosphorus and magnesium. Under the conditions of 25 wt% phosphoric acid concentration in the initial pulp, a weight ratio of liquid to solid of 12 mL/g, a temperature of 60°C, an agitation speed of 220 rpm, and leaching time of 120 min, REEs and phosphorus leaching efficiencies of 97.8% and 99.7% were obtained. Most parts of dissoluble substances were decomposed within 30 min. Chemical analysis, SEM-EDS, and XRD results indicated that leaching efficiencies of minerals in Zhijin phosphate ore increased following the order: quartz, aluminosilicate, pyrite, fluorapatite, dolomite, and calcite.
format	article
author	Li Zhili Xie Zhihao He Dongsheng Deng Jie Zhao Hengqin Li Hongqiang
author_facet	Li Zhili Xie Zhihao He Dongsheng Deng Jie Zhao Hengqin Li Hongqiang
author_sort	Li Zhili
title	Simultaneous leaching of rare earth elements and phosphorus from a Chinese phosphate ore using H3PO4
title_short	Simultaneous leaching of rare earth elements and phosphorus from a Chinese phosphate ore using H3PO4
title_full	Simultaneous leaching of rare earth elements and phosphorus from a Chinese phosphate ore using H3PO4
title_fullStr	Simultaneous leaching of rare earth elements and phosphorus from a Chinese phosphate ore using H3PO4
title_full_unstemmed	Simultaneous leaching of rare earth elements and phosphorus from a Chinese phosphate ore using H3PO4
title_sort	simultaneous leaching of rare earth elements and phosphorus from a chinese phosphate ore using h3po4
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/9ffbf6ff519e43c4bb5c521254204c5c
work_keys_str_mv	AT lizhili simultaneousleachingofrareearthelementsandphosphorusfromachinesephosphateoreusingh3po4 AT xiezhihao simultaneousleachingofrareearthelementsandphosphorusfromachinesephosphateoreusingh3po4 AT hedongsheng simultaneousleachingofrareearthelementsandphosphorusfromachinesephosphateoreusingh3po4 AT dengjie simultaneousleachingofrareearthelementsandphosphorusfromachinesephosphateoreusingh3po4 AT zhaohengqin simultaneousleachingofrareearthelementsandphosphorusfromachinesephosphateoreusingh3po4 AT lihongqiang simultaneousleachingofrareearthelementsandphosphorusfromachinesephosphateoreusingh3po4
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Simultaneous leaching of rare earth elements and phosphorus from a Chinese phosphate ore using H3PO4

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