Formation of zinc sulfide species during roasting of ZnO with pyrite and its contribution on flotation

Abstract In this paper, formation of zinc sulfide species during roasting of ZnO with FeS2 was investigated and its contribution on flotation was illustrated. The evolution process, phase and crystal growth were investigated by thermogravimetry (TG), X-Ray diffraction (XRD) along with thermodynamic...

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Autores principales:	Yong-xing Zheng, Jin-fang Lv, Hua Wang, Shu-ming Wen, Jie Pang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/027e2a894f154b01921d9aacd744ef42
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spelling	oai:doaj.org-article:027e2a894f154b01921d9aacd744ef422021-12-02T15:08:38ZFormation of zinc sulfide species during roasting of ZnO with pyrite and its contribution on flotation10.1038/s41598-018-26229-32045-2322https://doaj.org/article/027e2a894f154b01921d9aacd744ef422018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-26229-3https://doaj.org/toc/2045-2322Abstract In this paper, formation of zinc sulfide species during roasting of ZnO with FeS2 was investigated and its contribution on flotation was illustrated. The evolution process, phase and crystal growth were investigated by thermogravimetry (TG), X-Ray diffraction (XRD) along with thermodynamic calculation and scanning electron microscopy-Energy-dispersive X-ray spectroscopy (SEM-EDS), respectively, to interpret the formation mechanism of ZnS species. It was found that ZnS was initially generated at about 450 °C and then the reaction prevailed at about 600 °C. The generated FexS would dissolve into ZnS and then form (Zn, Fe)S compound in form of Fe2Zn3S5 when temperature increased to about 750 °C. This obviously accelerated ZnS phase formation and growth. In addition, it was known that increasing of ZnO dosage had few effects on the decomposition behavior of FeS2. Then, flotation tests of different zinc oxide materials before and after treatment were performed to further confirm that the flotation performances of the treated materials could be obviously improved. Finally, a scheme diagram was proposed to regular its application to mineral processing. It was systematically illustrated that different types of ZnS species needed to be synthetized when sulfidization roasting-flotation process was carried out to treat zinc oxide materials.Yong-xing ZhengJin-fang LvHua WangShu-ming WenJie PangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-10 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yong-xing Zheng Jin-fang Lv Hua Wang Shu-ming Wen Jie Pang Formation of zinc sulfide species during roasting of ZnO with pyrite and its contribution on flotation
description	Abstract In this paper, formation of zinc sulfide species during roasting of ZnO with FeS2 was investigated and its contribution on flotation was illustrated. The evolution process, phase and crystal growth were investigated by thermogravimetry (TG), X-Ray diffraction (XRD) along with thermodynamic calculation and scanning electron microscopy-Energy-dispersive X-ray spectroscopy (SEM-EDS), respectively, to interpret the formation mechanism of ZnS species. It was found that ZnS was initially generated at about 450 °C and then the reaction prevailed at about 600 °C. The generated FexS would dissolve into ZnS and then form (Zn, Fe)S compound in form of Fe2Zn3S5 when temperature increased to about 750 °C. This obviously accelerated ZnS phase formation and growth. In addition, it was known that increasing of ZnO dosage had few effects on the decomposition behavior of FeS2. Then, flotation tests of different zinc oxide materials before and after treatment were performed to further confirm that the flotation performances of the treated materials could be obviously improved. Finally, a scheme diagram was proposed to regular its application to mineral processing. It was systematically illustrated that different types of ZnS species needed to be synthetized when sulfidization roasting-flotation process was carried out to treat zinc oxide materials.
format	article
author	Yong-xing Zheng Jin-fang Lv Hua Wang Shu-ming Wen Jie Pang
author_facet	Yong-xing Zheng Jin-fang Lv Hua Wang Shu-ming Wen Jie Pang
author_sort	Yong-xing Zheng
title	Formation of zinc sulfide species during roasting of ZnO with pyrite and its contribution on flotation
title_short	Formation of zinc sulfide species during roasting of ZnO with pyrite and its contribution on flotation
title_full	Formation of zinc sulfide species during roasting of ZnO with pyrite and its contribution on flotation
title_fullStr	Formation of zinc sulfide species during roasting of ZnO with pyrite and its contribution on flotation
title_full_unstemmed	Formation of zinc sulfide species during roasting of ZnO with pyrite and its contribution on flotation
title_sort	formation of zinc sulfide species during roasting of zno with pyrite and its contribution on flotation
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/027e2a894f154b01921d9aacd744ef42
work_keys_str_mv	AT yongxingzheng formationofzincsulfidespeciesduringroastingofznowithpyriteanditscontributiononflotation AT jinfanglv formationofzincsulfidespeciesduringroastingofznowithpyriteanditscontributiononflotation AT huawang formationofzincsulfidespeciesduringroastingofznowithpyriteanditscontributiononflotation AT shumingwen formationofzincsulfidespeciesduringroastingofznowithpyriteanditscontributiononflotation AT jiepang formationofzincsulfidespeciesduringroastingofznowithpyriteanditscontributiononflotation
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Formation of zinc sulfide species during roasting of ZnO with pyrite and its contribution on flotation

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