| Depressing effect of phenoxyl acetic acids on flotation of minerals containing Ca^2＋/Mg^2＋ gangues |
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| 引用本文： | 张剑锋,胡岳华,王淀佐,徐竞.Depressing effect of phenoxyl acetic acids on flotation of minerals containing Ca^2＋/Mg^2＋ gangues[J].中南工业大学学报(英文版),2007,14(6):763-767. |
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| 作者姓名： | 张剑锋 胡岳华 王淀佐 徐竞 |
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| 作者单位： | State Key Laboratory Base of Novel Functional Materials and Preparation Science Faculty of Materials Science and Chemical Engineering Ningbo University，School of Resources Processing and Bioengineering Central South University，School of Resources Processing and Bioengineering Central South University，School of Resources Processing and Bioengineering Central South University，Ningbo 315211 China Changsha 410083 China Changsha 410083 China Changsha 410083 China |
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| 基金项目： | Project(Year 2005) supported by the Plan of High Learning Young Teacher of Zhejiang Province, China，Project(2005A620015) supported by the Ningbo Youth Science Fund, China，Project(2004745) supported by the Ningbo University for PhD |
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| 摘 要： | Phenoxyl acetic acids were applied to determine their depressing effect on minerals containing Ca2 /Mg2 gangues. Calcite, mixture of calcite and fluorite, and nickel ore were used in the flotation. And the depression mechanism was studied by the determination of contact angle, zeta potential, adsorptive capacity of collector, and IR analysis as well. It is found that 0.1 mmol/L of phenoxyl acetic acid derived from pyrogallol or gallic acid exhibits strong depressing ability on calcite in almost zero yields at pH value of 9.8, and calcite can be depressed in the flotation of calcite/fluorite mixture for approximate 87% yield of fluorite. The flotation result of practical nickel ore containing serpentine indicates that these two depressants may also show better depression performance to serpentine than traditional depressants such as sodium fluosilicate and carboxylmethyl cellulose. Analysis for the depression mechanism reveals that there exists strong chemical interaction between the depressants and minerals.
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| 关 键 词： | 浮选 抑压效应 方解石 抑制剂 醋酸 |
| 收稿时间： | 2 March 2007 |
| 修稿时间： | 2007-03-02 |
Depressing effect of phenoxyl acetic acids on flotation of minerals containing Ca2+/Mg2+ gangues |
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| Zhang Jian-feng , Hu Yue-hua , Wang Dian-zuo and Xu Jin.Depressing effect of phenoxyl acetic acids on flotation of minerals containing Ca2+/Mg2+ gangues[J].Journal of Central South University of Technology,2007,14(6):763-767. |
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| Authors: | Zhang Jian-feng Hu Yue-hua Wang Dian-zuo and Xu Jin |
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| Affiliation: | 1. State Key Laboratory Base of Novel Functional Materials and Preparation Science, Faculty of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China; 2. School of Resources Processing and Bioengineering, Central South University, Changsha 410083, China |
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| Abstract: | Phenoxyl acetic acids were applied to determine their depressing effect on minerals containing Ca2 /Mg2 gangues. Calcite, mixture of calcite and fluorite, and nickel ore were used in the flotation. And the depression mechanism was studied by the determination of contact angle, zeta potential, adsorptive capacity of collector, and IR analysis as well. It is found that 0.1 mmol/L of phenoxyl acetic acid derived from pyrogallol or gallic acid exhibits strong depressing ability on calcite in almost zero yields at pH value of 9.8, and calcite can be depressed in the flotation of calcite/fluorite mixture for approximate 87% yield of fluorite. The flotation result of practical nickel ore containing serpentine indicates that these two depressants may also show better depression performance to serpentine than traditional depressants such as sodium fluosilicate and carboxylmethyl cellulose. Analysis for the depression mechanism reveals that there exists strong chemical interaction between the depressants and minerals. |
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| Keywords: | flotation depressing effect depressant phenoxyl acetic acid calcite serpentine |
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