In–situ XRD and EDS method study on the oxidation behaviour of Ni–Cu sulphide ore

Abstract The oxidation mechanism of sulfides is the key issue during the sulphide–metallurgy process. In this study, the phase transformation and element migration were clearly demonstrated by in–situ laboratory–based X–ray diffraction (XRD) and energy–dispersive X–ray spectroscopy (EDS), respective...

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Autores principales:	Guangshi Li, Hongwei Cheng, Xiaolu Xiong, Xionggang Lu, Cong Xu, Changyuan Lu, Xingli Zou, Qian Xu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a43d104b23f746438f830047a28bdc97
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spelling	oai:doaj.org-article:a43d104b23f746438f830047a28bdc972021-12-02T12:32:58ZIn–situ XRD and EDS method study on the oxidation behaviour of Ni–Cu sulphide ore10.1038/s41598-017-03290-y2045-2322https://doaj.org/article/a43d104b23f746438f830047a28bdc972017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03290-yhttps://doaj.org/toc/2045-2322Abstract The oxidation mechanism of sulfides is the key issue during the sulphide–metallurgy process. In this study, the phase transformation and element migration were clearly demonstrated by in–situ laboratory–based X–ray diffraction (XRD) and energy–dispersive X–ray spectroscopy (EDS), respectively. The reaction sequence and a four–step oxidation mechanism were proposed and identified. The elemental distribution demonstrated that at a low temperature, the Fe atoms diffused outward and the Ni/Cu atoms migrated toward the inner core, whereas the opposite diffusion processes were observed at a higher temperature. Importantly, the unique visual presentation of the oxidation behaviour provided by the combination of in–situ XRD and EDS might be useful for optimising the process parameters to improve the Ni/Cu extraction efficiency during Ni–Cu sulphide metallurgy.Guangshi LiHongwei ChengXiaolu XiongXionggang LuCong XuChangyuan LuXingli ZouQian XuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-11 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Guangshi Li Hongwei Cheng Xiaolu Xiong Xionggang Lu Cong Xu Changyuan Lu Xingli Zou Qian Xu In–situ XRD and EDS method study on the oxidation behaviour of Ni–Cu sulphide ore
description	Abstract The oxidation mechanism of sulfides is the key issue during the sulphide–metallurgy process. In this study, the phase transformation and element migration were clearly demonstrated by in–situ laboratory–based X–ray diffraction (XRD) and energy–dispersive X–ray spectroscopy (EDS), respectively. The reaction sequence and a four–step oxidation mechanism were proposed and identified. The elemental distribution demonstrated that at a low temperature, the Fe atoms diffused outward and the Ni/Cu atoms migrated toward the inner core, whereas the opposite diffusion processes were observed at a higher temperature. Importantly, the unique visual presentation of the oxidation behaviour provided by the combination of in–situ XRD and EDS might be useful for optimising the process parameters to improve the Ni/Cu extraction efficiency during Ni–Cu sulphide metallurgy.
format	article
author	Guangshi Li Hongwei Cheng Xiaolu Xiong Xionggang Lu Cong Xu Changyuan Lu Xingli Zou Qian Xu
author_facet	Guangshi Li Hongwei Cheng Xiaolu Xiong Xionggang Lu Cong Xu Changyuan Lu Xingli Zou Qian Xu
author_sort	Guangshi Li
title	In–situ XRD and EDS method study on the oxidation behaviour of Ni–Cu sulphide ore
title_short	In–situ XRD and EDS method study on the oxidation behaviour of Ni–Cu sulphide ore
title_full	In–situ XRD and EDS method study on the oxidation behaviour of Ni–Cu sulphide ore
title_fullStr	In–situ XRD and EDS method study on the oxidation behaviour of Ni–Cu sulphide ore
title_full_unstemmed	In–situ XRD and EDS method study on the oxidation behaviour of Ni–Cu sulphide ore
title_sort	in–situ xrd and eds method study on the oxidation behaviour of ni–cu sulphide ore
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/a43d104b23f746438f830047a28bdc97
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In–situ XRD and EDS method study on the oxidation behaviour of Ni–Cu sulphide ore

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