Adsorption mechanism of lead ions at ilmenite/water interface and its influence on ilmenite flotability

被引：81

作者：

Chen, Pan ^{[1
]}

Zhai, Jihua ^{[1
]}

Sun, Wei ^{[1
]}

Hu, Yuehua ^{[1
]}

Yin, Zhigang ^{[1
]}

Lai, Xiangsheng ^{[1
]}

机构：

[1] Cent S Univ, Sch Minerals Proc & Bioengn, Changsha 410083, Hunan, Peoples R China

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2017年 / 53卷

关键词：

Adsorption; Lead ions; Ilmenite; Surface modification; ALKYLPHOSPHONIC ACID; FLOTATION SEPARATION; XANTHATE ADSORPTION; SURFACE; ACTIVATION; SPHALERITE; OLEATE; DISSOLUTION; SCHEELITE; NITRATE;

D O I：

10.1016/j.jiec.2017.04.037

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In order to get further understanding of lead ions adsorption onto ilmenite surface, zeta potential analysis, adsorption density calculation, FT-IR and XPS analysis were employed. The results showed that the adsorption of lead ions onto ilmenite surface was a chemically dominating process. Lead species could interact with iron-hydroxyl complex compounds to form a Fe-O-Pb complex. The hydrophobic complex of Pb(OL)(2) was also observed. Iron and adsorbed lead ions on ilmenite surface served as the main active-sites via chemisorption with oleate species. Introducing lead ions, as a surface modification means, can efficiently improve ilmenite flotability. (C) 2017 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

引用

页码：285 / 293

页数：9

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