期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 37, 期 -, 页码 123-130出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2016.03.011
关键词
Adsorption; Surface modification; Flotation; Ilmenite
资金
- National High-Tech Research and Development Program of China (863 Program) [2013AA064102]
- National Basic Research Program of China (973 program) [201403643403]
In order to get close-packed hydrophobic molecular monolayer, surface modification of ilmenite was carried out with cupric ions. As it was found by zeta potential and XPS measurement, the cupric ions modification occurs via ion exchange, metal hydroxides adsorption, and redox processes. After modifying by cupric ions, ilmenite surface properties became more active and the adsorption amount of alpha-hydroxyoctyl phosphinic acid (HPA) increased. As expected, the flotation behaviour of ilmenite improved. XPS measurements verified the ability to establish a covalently attached HPA on the surfaces of ilmenite after Cu(II) activation. The findings of this study will provide a fundamental basis for strengthening flotation. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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