| 低碱度铜硫分离抑制剂及抑制机理的研究 |
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| 引用本文： | 余新阳,周源,钟宏.低碱度铜硫分离抑制剂及抑制机理的研究[J].金属矿山,2008,38(9):65-67. |
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| 作者姓名： | 余新阳 周源 钟宏 |
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| 作者单位： | 1.江西理工大学；2.中南大学 |
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| 摘 要： | 在pH=7~8低碱度条件下，以Ca(ClO)2抑制黄铁矿，进行铜硫浮选分离试验,并探讨了Ca(ClO)2对黄铁矿的抑制机理。试验表明，Ca(ClO)2是黄铁矿的良好抑制剂，在矿浆pH=7~8低碱度条件下,不添加石灰，只需加入少量的Ca(ClO)2抑制剂，就可以很好地抑制黄铁矿，实现铜硫分离。Ca(ClO)2作用前后黄铁矿矿物表面拉曼光谱分析表明， Ca(ClO)2抑制黄铁矿实现铜硫分离的机理为在矿浆pH=7~8低碱度条件下，Ca(ClO)2氧化黄铁矿表面，使其表面产生主要成分为Fe(OH)3和CaCO3的亲水薄膜，提高了亲水性，使其在铜硫浮选分离作业中被充分抑制，从而实现铜硫分离。
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| 关 键 词： | 铜硫分离 黄铁矿 抑制剂 |
| 收稿时间： | 2008-07-29 |
Depressor for Cu-S Separation in Low Alkaline Medium and Its Depressing Mechanism |
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| Yu Xinyang,Zhou Yuan,Zhong Hong.Depressor for Cu-S Separation in Low Alkaline Medium and Its Depressing Mechanism[J].Metal Mine,2008,38(9):65-67. |
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| Authors: | Yu Xinyang Zhou Yuan Zhong Hong |
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| Affiliation: | 1.Jiangxi University of Science and Technology；2.Central South University |
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| Abstract: | Cu-S separation test was conducted at pH=7~8 with Ca(ClO)2 as the depressor for pyrite, and the depressing mechanism of Ca(ClO)2 for pyrite was studied. The test shows that Ca(ClO)2 is a good depressor for pyrite and good Cu-S separation can be achieved at a low alkalinity of pH=7~8 with only a small amount of Ca(ClO)2 but without lime. The analysis of Raman spectrograms before and after the addition of Ca(ClO)2 indicates that at a pH of 7~8, Ca(ClO)2 will oxidize the pyrite surface to produce a hygrophilous film of Fe(OH)3 and CaCO3 on it, which can enhance the hydrophilicity of pyrite surface, making it fully depressed so as to achieve a separation of copper from sulfur. |
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| Keywords: | Cu-S separation Pyrite Depressor |
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