| Depressing effect of hydroxamic polyacrylamide on pyrite |
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| 引用本文： | 张剑锋,胡岳华,王淀佐,徐竞. Depressing effect of hydroxamic polyacrylamide on pyrite[J]. 中南工业大学学报(英文版), 2004, 11(4): 380-384. DOI: 10.1007/s11771-004-0079-1 |
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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： | [1]SchoolofResourcesProcessingandBioengineering,CentralSouthUniversity,Changsha410083,China／／FacultyofScience,NingboUniversity,Ningbo315211,China [2]SchoolofResourcesProcessingandBioengineering,CentralSouthUniversity,Changsha410083,China |
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| 基金项目： | Project (5 0 2 34 0 1 0 )supportedbytheNationalNaturalScienceFoundationofChina |
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| 摘 要： | The performance of hydroxamic polyacrylamide(HPAM) in mineral flotation was tested on the samples of calcite, diaspore and pyrite. It is found that HPAM expresses intensive depression on pyrite and can be used as effective depressants for pyrite. The depression mechanism of HPAM to pyrite was investigated by the determination of contact angle, zeta potential, adsorptive capacity for collectors and infrared spectrum. A lower contact angle,more negative zeta potential, less xanthate adsorptive capacity, and the formation of chemical bonding were determined, which reveals that the strong chemical interactions exist between HPAM and pyrite surface. The group electronegativity of HPAM was calculated to explain the differences of interaction between reagent and minerals.
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| 关 键 词： | 聚丙烯酰胺 抑制剂 黄铁矿 HPAM 矿物浮选 |
| 收稿时间： | 2004-02-16 |
| 修稿时间： | 2004-04-20 |
Depressing effect of hydroxamic polyacrylamide on pyrite |
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| Zhang Jian-feng , Hu Yue-hua , Wang Dian-zuo and Xu Jing. Depressing effect of hydroxamic polyacrylamide on pyrite[J]. Journal of Central South University of Technology, 2004, 11(4): 380-384. DOI: 10.1007/s11771-004-0079-1 |
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| Authors: | Zhang Jian-feng Hu Yue-hua Wang Dian-zuo Xu Jing |
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| Affiliation: | (1) School of Resources Processing and Bioengineering, Central South University, 410083 Changsha, China;(2) Faculty of Science, Ningbo University, 315211 Ningbo, China |
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| Abstract: | The performance of hydroxamic polyacrylamide(HPAM) in mineral flotation was tested on the samples of calcite, diaspore and pyrite. It is found that HPAM expresses intensive depression on pyrite and can be used as effective depressants for pyrite. The depression mechanism of HPAM to pyrite was investigated by the determination of contact angle, zeta potential, adsorptive capacity for collectors and infrared spectrum. A lower contact angle, more negative zeta potential, less xanthate adsorptive capacity, and the formation of chemical bonding were determined, which reveals that the strong chemical interactions exist between HPAM and pyrite surface. The group electronegativity of HPAM was calculated to explain the differences of interaction between reagent and minerals. |
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| Keywords: | hydroxamic polyacrylamide depressant pyrite |
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