Flotation Depression of Arsenopyrite Using Sodium Nitrobenzoate under Alkaline Conditions

Arsenopyrite is a common arsenic-containing mineral that is often closely associated with sulfide minerals, such as pyrite, chalcopyrite, pyrrhotite, galena, and sphalerite, and with precious metals, such as gold and silver. The selective inhibition of arsenopyrite is an important method used to red...

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Autores principales:	Xiaohao Sun, Bozeng Wu, Mingzhen Hu, Hongxin Qiu, Jiushuai Deng, Jiaozong Cai, Xiaoli Jin
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	flotation arsenopyrite m-NBO surface properties depression redox potential Mineralogy QE351-399.2
Acceso en línea:	https://doaj.org/article/61ce828035604511a6bae986262c2ab9
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id	oai:doaj.org-article:61ce828035604511a6bae986262c2ab9
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spelling	oai:doaj.org-article:61ce828035604511a6bae986262c2ab92021-11-25T18:26:20ZFlotation Depression of Arsenopyrite Using Sodium Nitrobenzoate under Alkaline Conditions10.3390/min111112162075-163Xhttps://doaj.org/article/61ce828035604511a6bae986262c2ab92021-10-01T00:00:00Zhttps://www.mdpi.com/2075-163X/11/11/1216https://doaj.org/toc/2075-163XArsenopyrite is a common arsenic-containing mineral that is often closely associated with sulfide minerals, such as pyrite, chalcopyrite, pyrrhotite, galena, and sphalerite, and with precious metals, such as gold and silver. The selective inhibition of arsenopyrite is an important method used to reduce the arsenic content of processed products, the cost of arsenic removal in metallurgical processes, and its impact on the environment. In this study, we discovered a chemical sodium, m-nitrobenzoate (m-NBO), that can effectively inhibit the flotation behaviors of arsenopyrite via sodium butyl xanthate (NaBX), and these effects were studied by flotation experiments. The results showed that, using NaBX as a collector, arsenopyrite had good floatability under acidic conditions, but the floatability decreased under alkaline conditions. Furthermore, the organic inhibitor m-NBO had a significant inhibitory effect on arsenopyrite under alkaline conditions. In addition, the adsorption between m-NBO and NaBX was competitive, and a hydrophilic layer formed on the surface of arsenopyrite. The passivation film prevents dixanthogen from being adsorbed on the surface of the mineral. Due to the effect of m-NBO on arsenopyrite, the redox potential and oxide content of the arsenopyrite surface increased, the hydrophobicity of the arsenopyrite surface was reduced, and the flotation of arsenopyrite was inhibited. These results provide options for separating multimetal sulfide minerals and arsenic-containing minerals.Xiaohao SunBozeng WuMingzhen HuHongxin QiuJiushuai DengJiaozong CaiXiaoli JinMDPI AGarticleflotationarsenopyritem-NBOsurface propertiesdepressionredox potentialMineralogyQE351-399.2ENMinerals, Vol 11, Iss 1216, p 1216 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	flotation arsenopyrite m-NBO surface properties depression redox potential Mineralogy QE351-399.2
spellingShingle	flotation arsenopyrite m-NBO surface properties depression redox potential Mineralogy QE351-399.2 Xiaohao Sun Bozeng Wu Mingzhen Hu Hongxin Qiu Jiushuai Deng Jiaozong Cai Xiaoli Jin Flotation Depression of Arsenopyrite Using Sodium Nitrobenzoate under Alkaline Conditions
description	Arsenopyrite is a common arsenic-containing mineral that is often closely associated with sulfide minerals, such as pyrite, chalcopyrite, pyrrhotite, galena, and sphalerite, and with precious metals, such as gold and silver. The selective inhibition of arsenopyrite is an important method used to reduce the arsenic content of processed products, the cost of arsenic removal in metallurgical processes, and its impact on the environment. In this study, we discovered a chemical sodium, m-nitrobenzoate (m-NBO), that can effectively inhibit the flotation behaviors of arsenopyrite via sodium butyl xanthate (NaBX), and these effects were studied by flotation experiments. The results showed that, using NaBX as a collector, arsenopyrite had good floatability under acidic conditions, but the floatability decreased under alkaline conditions. Furthermore, the organic inhibitor m-NBO had a significant inhibitory effect on arsenopyrite under alkaline conditions. In addition, the adsorption between m-NBO and NaBX was competitive, and a hydrophilic layer formed on the surface of arsenopyrite. The passivation film prevents dixanthogen from being adsorbed on the surface of the mineral. Due to the effect of m-NBO on arsenopyrite, the redox potential and oxide content of the arsenopyrite surface increased, the hydrophobicity of the arsenopyrite surface was reduced, and the flotation of arsenopyrite was inhibited. These results provide options for separating multimetal sulfide minerals and arsenic-containing minerals.
format	article
author	Xiaohao Sun Bozeng Wu Mingzhen Hu Hongxin Qiu Jiushuai Deng Jiaozong Cai Xiaoli Jin
author_facet	Xiaohao Sun Bozeng Wu Mingzhen Hu Hongxin Qiu Jiushuai Deng Jiaozong Cai Xiaoli Jin
author_sort	Xiaohao Sun
title	Flotation Depression of Arsenopyrite Using Sodium Nitrobenzoate under Alkaline Conditions
title_short	Flotation Depression of Arsenopyrite Using Sodium Nitrobenzoate under Alkaline Conditions
title_full	Flotation Depression of Arsenopyrite Using Sodium Nitrobenzoate under Alkaline Conditions
title_fullStr	Flotation Depression of Arsenopyrite Using Sodium Nitrobenzoate under Alkaline Conditions
title_full_unstemmed	Flotation Depression of Arsenopyrite Using Sodium Nitrobenzoate under Alkaline Conditions
title_sort	flotation depression of arsenopyrite using sodium nitrobenzoate under alkaline conditions
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/61ce828035604511a6bae986262c2ab9
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Flotation Depression of Arsenopyrite Using Sodium Nitrobenzoate under Alkaline Conditions

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