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New Insights on Sodium Oleate Adsorption on Quartz for Iron Direct Flotation under Weak-Acidic Condition

  • Ying Hou

    Prof. Ying Hou He graduated from Mineral Processing Engineering of Liaoning Technical University with a bachelor’s degree and a master’s degree. He received a doctor’s degree in Mineral Processing Engineering from Northeastern University. He was a lecturer in Mineral Processing Engineering of University of Science and Technology Liaoning in July 2014. He was engaged in post-doctoral research in Anhui Tianyuan Science and Technology Co., Ltd. of Sinosteel group and Metallurgical Engineering of Northeastern University from January 2016 to January 2018. In December 2017, he is an associate professor of Mineral Processing Engineering at University of Science and Technology Liaoning. He has done a lot of teaching and research work and finished many projects funded by Natural Science Foundation of Liaoning Province, Education Department of Liaoning Province, and Science and Technology Plan Project of Anshan City.

    and Ahmed Sobhy

    Prof. Ahmed Sobhy He has more than 15 years of professional teaching and research experience in Mining and Mineral Processing Engineering and has accumulated rich work experience skills in USA, Egypt, Saudi Arabia, and China. He earned his M. Sc. in Mineral Processing through Physical Chemistry Department from College of Science in Cairo University and Ph.D in Mining Engineering from University of Kentucky. He is currently an associate professor of Mining and Mineral Processing Engineering at Shandong University of Technology, Zibo, Shandong, China. He is also a scientific researcher at Minerals Technology Department, Central Metallurgical R&D institute, El-Tibeen, Hewan, Egypt.

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Published/Copyright: May 12, 2021
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Abstract

To study the sodium oleate (NaOL) adsorption on quartz and its effect on flotation under weak-acidic conditions, the adsorption characteristics of NaOL on the surface of quartz were determined at pH = 6.5 by Fourier transform infrared spectroscopy (FTIR). The solution chemical calculation results show that NaOL exists as oleic acid (HOL) under weakly acidic conditions. The existence form and charge distribution of quartz and HOL were analyzed by Molecular Dynamics Simulation (MDS) using Materials Studio (MS) software, and the results showed that HOL is prone to the (101) and (100) surfaces of quartz under weak-acidic conditions by hydrogen bonding. The flotation verification test with NaOL as a collector was also performed under weak-acidic conditions. The flotation test led to a partial flotation of quartz into the froth products, reducing the grade of hematite direct flotation concentrate, which is consistent with industrial production.

Abstract

Um die Adsorption von Natriumoleat (NaOL) auf Quarz und seine Auswirkung auf die Flotation unter schwach sauren Bedingungen zu untersuchen, wurden die Adsorptionseigenschaften von NaOL auf der Oberfläche von Quarz bei pH = 6,5 durch Fourier-Transform-Infrarotspektroskopie (FTIR) bestimmt. Die Berechnungen für die chemische Lösung zeigen, dass NaOL unter schwach sauren Bedingungen als Ölsäure (HOL) vorliegt. Die Existenzform und Ladungsverteilung von Quarz und HOL wurden mittels molekulardynamischer Simulation (MDS) unter Verwendung der Materials Studio (MS) Software analysiert. Die Ergebnisse zeigten, dass HOL unter schwach sauren Bedingungen durch Wasserstoffbrückenbindungen an die (101)- und (100)-Quarz-Oberflächen gebunden ist. Der Flotationsverifizierungstest mit NaOL als Kollektor wurde ebenfalls unter schwach sauren Bedingungen durchgeführt. Der Flotationsverifizierungstest führte zu einer teilweisen Flotation von Quarz in die weiteren Schaumprodukte, wodurch die Qualität des Hämatit-Direktflotationskonzentrats reduziert wurde, was mit der industriellen Produktion übereinstimmt.


Prof. Dr. Ahmed Sobhy Minerals Technology Department Central Metallurgical R&D Institute Helwan Cairo, 11421 Egypt, School of Resources and Environmental Engineering Shandong University of Technology Zibo, 255049 China

About the authors

Prof. Ying Hou

Prof. Ying Hou He graduated from Mineral Processing Engineering of Liaoning Technical University with a bachelor’s degree and a master’s degree. He received a doctor’s degree in Mineral Processing Engineering from Northeastern University. He was a lecturer in Mineral Processing Engineering of University of Science and Technology Liaoning in July 2014. He was engaged in post-doctoral research in Anhui Tianyuan Science and Technology Co., Ltd. of Sinosteel group and Metallurgical Engineering of Northeastern University from January 2016 to January 2018. In December 2017, he is an associate professor of Mineral Processing Engineering at University of Science and Technology Liaoning. He has done a lot of teaching and research work and finished many projects funded by Natural Science Foundation of Liaoning Province, Education Department of Liaoning Province, and Science and Technology Plan Project of Anshan City.

Prof. Dr. Ahmed Sobhy

Prof. Ahmed Sobhy He has more than 15 years of professional teaching and research experience in Mining and Mineral Processing Engineering and has accumulated rich work experience skills in USA, Egypt, Saudi Arabia, and China. He earned his M. Sc. in Mineral Processing through Physical Chemistry Department from College of Science in Cairo University and Ph.D in Mining Engineering from University of Kentucky. He is currently an associate professor of Mining and Mineral Processing Engineering at Shandong University of Technology, Zibo, Shandong, China. He is also a scientific researcher at Minerals Technology Department, Central Metallurgical R&D institute, El-Tibeen, Hewan, Egypt.

Acknowledgements

The authors gratefully acknowledge the financial supports from the Natural Science Foundation of Liaoning Province of China (20180550198), the Educational Commission of Liaoning Province of China (2016TSPY12, 2019LNQN09), the Fundamental Research Funds for the Central Universities (N180104017), and the Key Research and Development Program of Liaoning Province of China (2017230002).

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Received: 2020-12-22
Accepted: 2021-01-25
Published Online: 2021-05-12
Published in Print: 2021-05-31

© 2021 Walter de Gruyter GmbH, Berlin/Boston

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