Activation flotation and mechanism of lime-depressed pyrite with oxalic acid

被引：40

作者：

Huang Hongjun ^{[1
]}

Hu Yuehua ^{[1
]}

Wei, Sun ^{[1
]}

机构：

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

来源：

INTERNATIONAL JOURNAL OF MINING SCIENCE AND TECHNOLOGY | 2012年 / 22卷 / 01期

关键词：

Oxalic acid; Pyrite; Activation; Mechanism;

D O I：

10.1016/j.ijmst.2011.07.007

中图分类号：

TD [矿业工程];

学科分类号：

0819 ;

摘要：

Flotation tests, contact angle measurements, infrared spectrum analyses, X-ray analyses and computer simulation were carried out in order to study the activation mechanism of lime-depressed pyrite with oxalic acid. The results show that the oxalic acid effectively eliminated the hydrophilic calcium film from the surface of pyrite. Therefore, the efficiency of pyrite flotation was also activated. The results indicate that after reacting with hydrophobic insoluble remainders on the surface of pyrite, oxalic acid can produce hydrophilic compounds, such as CaCO3, Ca(OH)(2) and Fe(OH)(3). As a consequence, a fresh pyrite layer was exposed and its flotation activated. (C) 2012 Published by Elsevier B. V. on behalf of China University of Mining & Technology.

引用

页码：63 / 67

页数：5

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