Demulsification Behavior of Alkali and Organic Acid in Zinc Extraction

Alkali agents could be used to enhance the extraction of zinc from solution of high concentration, but excess alkali can sensitively lead to emulsification of the solution. In this paper, the emulsification in the extraction process, demulsification, and extraction with different additives and its a...

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Autores principales:	Tao Jiang, Feiyu Meng, Ke Li, Qaing Zhong, Bin Xu, Qian Li, Yongbin Yang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	demulsification zinc extraction saponification pre-treatment alkali and organic acid zinc hydroxide Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/0c1474564c29432193c536ea4dc89667
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spelling	oai:doaj.org-article:0c1474564c29432193c536ea4dc896672021-11-25T18:22:16ZDemulsification Behavior of Alkali and Organic Acid in Zinc Extraction10.3390/met111118332075-4701https://doaj.org/article/0c1474564c29432193c536ea4dc896672021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1833https://doaj.org/toc/2075-4701Alkali agents could be used to enhance the extraction of zinc from solution of high concentration, but excess alkali can sensitively lead to emulsification of the solution. In this paper, the emulsification in the extraction process, demulsification, and extraction with different additives and its action mechanism were studied. The results indicate that the associated addition of alkali and organic acid could eliminate emulsification and improve zinc extraction. The extraction ratio of zinc reached 99.61% under the conditions of 104 mL/L organic acid, 80 g/L alkali, and 40% extractant concentration. Zinc hydroxide formed from hydroxyl and zinc ion at sensitively increased pH was the cause of emulsification during extraction. Associated addition of alkali and organic acid could contribute to the control solution pH in the range of 3.0–4.0, which is lower than that of the formation of zinc hydroxide, and therefore, improve zinc extraction.Tao JiangFeiyu MengKe LiQaing ZhongBin XuQian LiYongbin YangMDPI AGarticledemulsificationzinc extractionsaponification pre-treatmentalkali and organic acidzinc hydroxideMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1833, p 1833 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	demulsification zinc extraction saponification pre-treatment alkali and organic acid zinc hydroxide Mining engineering. Metallurgy TN1-997
spellingShingle	demulsification zinc extraction saponification pre-treatment alkali and organic acid zinc hydroxide Mining engineering. Metallurgy TN1-997 Tao Jiang Feiyu Meng Ke Li Qaing Zhong Bin Xu Qian Li Yongbin Yang Demulsification Behavior of Alkali and Organic Acid in Zinc Extraction
description	Alkali agents could be used to enhance the extraction of zinc from solution of high concentration, but excess alkali can sensitively lead to emulsification of the solution. In this paper, the emulsification in the extraction process, demulsification, and extraction with different additives and its action mechanism were studied. The results indicate that the associated addition of alkali and organic acid could eliminate emulsification and improve zinc extraction. The extraction ratio of zinc reached 99.61% under the conditions of 104 mL/L organic acid, 80 g/L alkali, and 40% extractant concentration. Zinc hydroxide formed from hydroxyl and zinc ion at sensitively increased pH was the cause of emulsification during extraction. Associated addition of alkali and organic acid could contribute to the control solution pH in the range of 3.0–4.0, which is lower than that of the formation of zinc hydroxide, and therefore, improve zinc extraction.
format	article
author	Tao Jiang Feiyu Meng Ke Li Qaing Zhong Bin Xu Qian Li Yongbin Yang
author_facet	Tao Jiang Feiyu Meng Ke Li Qaing Zhong Bin Xu Qian Li Yongbin Yang
author_sort	Tao Jiang
title	Demulsification Behavior of Alkali and Organic Acid in Zinc Extraction
title_short	Demulsification Behavior of Alkali and Organic Acid in Zinc Extraction
title_full	Demulsification Behavior of Alkali and Organic Acid in Zinc Extraction
title_fullStr	Demulsification Behavior of Alkali and Organic Acid in Zinc Extraction
title_full_unstemmed	Demulsification Behavior of Alkali and Organic Acid in Zinc Extraction
title_sort	demulsification behavior of alkali and organic acid in zinc extraction
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/0c1474564c29432193c536ea4dc89667
work_keys_str_mv	AT taojiang demulsificationbehaviorofalkaliandorganicacidinzincextraction AT feiyumeng demulsificationbehaviorofalkaliandorganicacidinzincextraction AT keli demulsificationbehaviorofalkaliandorganicacidinzincextraction AT qaingzhong demulsificationbehaviorofalkaliandorganicacidinzincextraction AT binxu demulsificationbehaviorofalkaliandorganicacidinzincextraction AT qianli demulsificationbehaviorofalkaliandorganicacidinzincextraction AT yongbinyang demulsificationbehaviorofalkaliandorganicacidinzincextraction
_version_	1718411240512946176

Demulsification Behavior of Alkali and Organic Acid in Zinc Extraction

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