| Galvanic coupling and its effect on origin potential flotation system of sulfide minerals |
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| 作者姓名： | 顾帼华 戴晶平 王晖 邱冠周 |
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| 作者单位： | SchoolofResourcesProcessingandBioengineering,CentralSouthUniversity,Changsha410083,China |
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| 基金项目： | Project( 2 0 0 2 0 5 3 3 0 17)supportedbySpecializedResearchFundfortheDoctoralProgramofHigherEducation，project
( 2 0 0 14 5 )supportedbyFoundationfortheAuthorofNationalExcellentDoctoralDissertationofChina |
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| 摘 要： | The galvanic coupling formed in origin potential flotation systems of sulfide minerals can be divided into three types: sulfide mineral-sulfide mineral-water system; sulfide mineral-steel ball-water system; and sulfide mineral-sulfide mineral-collector system. In this paper, taking lead, zinc, iron sulfide mineral systems for examples,several models of galvanic coupling were proposed and the effects of galvanic coupling on flotation were discussed. A galvanic contact between galena (or sphalerite) and pyrite contributes to decreasing the content of zinc in lead concentrate, and enhances remarkably the absorption of collector on the galena surface. During grinding, due to galvanic interactions between minerals and steel medium, Fe(OH)3 formed covers on the cathodic mineral surface, affecting its floatability.
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| 关 键 词： | 电耦合 浮选 硫化物 矿石 |
| 收稿时间： | 16 February 2004 |
| 修稿时间： | 27 April 2004 |
Galvanic coupling and its effect on origin potential flotation system of sulfide minerals |
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| Gu Guo-hua , Dai Jing-ping , Wang Hui and Qiu Guan-zhou.Galvanic coupling and its effect on origin potential flotation system of sulfide minerals[J].Journal of Central South University of Technology,2004,11(3):275-279. |
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| Authors: | Gu Guo-hua Dai Jing-ping Wang Hui and Qiu Guan-zhou |
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| Affiliation: | (1) School of Resources Processing and Bioengineering, Central South University, 410083 Changsha, China |
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| Abstract: | The galvanic coupling formed in origin potential flotation systems of sulfide minerals can be divided into three types: sulfide mineral-sulfide mineral-water system; sulfide mineral-steel ball-water system; and sulfide mineral-sulfide mineral-collector system. In this paper, taking lead, zinc, iron sulfide mineral systems for examples,several models of galvanic coupling were proposed and the effects of galvanic coupling on flotation were discussed. A galvanic contact between galena (or sphalerite) and pyrite contributes to decreasing the content of zinc in lead concentrate, and enhances remarkably the absorption of collector on the galena surface. During grinding, due to galvanic interactions between minerals and steel medium, Fe(OH)3 formed covers on the cathodic mineral surface, affecting its floatability. |
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| Keywords: | galvanic coupling origin potential flotation sulfide mineral |
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