New Insights on Sodium Oleate Adsorption on Quartz for Iron Direct Flotation under Weak-Acidic Condition Neue Erkenntnisse Zur Natriumoleat-Adsorption Auf Quarz Für Die Direktflotation Von Eisen Unter Schwach Sauren Bedingungen

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.

Department(s)

Mining Engineering

Comments

Natural Science Foundation of Liaoning Province, Grant 2016TSPY12

Keywords and Phrases

direct flotation; Hematite; molecular dynamics simulations; Quartz; sodium oleate

International Standard Serial Number (ISSN)

0932-3414

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Walter de Gruyter GmbH, All rights reserved.

Publication Date

01 May 2021

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