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Separation Science and Technology Volume 55, 2020 - Issue 16
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Flotation

Effect of particle size on the surface oxidation and flotation behavior of galena particles in lime system

Zhongbao Huaa Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, PR China;b State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, PR ChinaORCID Iconhttps://orcid.org/0000-0002-7551-8125View further author information
ORCID Icon,
Yalin Lua Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, PR China;b State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, PR ChinaView further author information
,
Xiong Tonga Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, PR China;b State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, PR ChinaCorrespondence[email protected]
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,
Dongxia Fenga Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, PR China;b State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, PR ChinaCorrespondence[email protected]
ORCID Iconhttps://orcid.org/0000-0001-5472-3878View further author information
ORCID Icon &
Xian Xiea Faculty of Land Resource Engineering, Kunming University of Science and Technology, Kunming, PR China;b State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming, PR ChinaView further author information
Pages 2987-2993 | Received 02 May 2019, Accepted 20 Aug 2019, Published online: 26 Aug 2019
 
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ABSTRACT

In this research, the effect of particle size on the surface oxidation and flotation behavior of galena in the lime system was studied. Coarse (−0.074 + 0.038 mm), intermediate (−0.038 + 0.025 mm) and fine (−0.025 mm) galena particles were used in the experiment. The dissolution tests, flotation tests, and sorption tests were accomplished. Through further analysis by XPS, the effect of particle size and lime was observed. The decrease of mineral particle sizes increased the adsorption ratio of collector and the dissolution of galena, while the hydrophilic product OH−/Ca(OH)+ produced by dissolution occupied the dominant position, which led to the minerals hydrophilic.

Additional information

Funding

The Natural Science Foundation of China (51764024) and (51804145) supported this research; National Natural Science Foundation of China [51764024,51804145].

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