The influence of galvanic interaction on the dissolution and surface composition of galena and pyrite in flotation system
The influence of galvanic interaction on the dissolution and surface composition of galena and pyrite in flotation system
复制标题
浮选体系中电偶相互作用对方铅矿和黄铁矿溶解及表面组成的影响
DOI：
10.1016/j.mineng.2020.106525
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发表时间：
2020-09
影响因子：
4.8
通讯作者：
Wu Jiajia
中科院分区：
文献类型：
--
作者：
Wang Xingjie;Qin Wenqing;Jiao Fen;Wu Jiajia
通过金属离子释放实验和XPS分析，研究了方铅矿和黄铁矿共存浮选体系中方铅矿和黄铁矿的溶解行为和表面组成，揭示了电偶作用对二者浮选的影响。结果表明，黄铁矿的存在强烈地促进了铅离子从方铅矿表面的溶解，并显著地依赖于黄铁矿的含量。方铅矿的存在也促进了黄铁矿表面铁离子的溶解，但方铅矿含量的影响不大。XPS分析证实，原电池的相互作用增强方铅矿氧化，导致其表面上的硫氧化物/氢氧化物组分的增加。电偶作用对黄铁矿氧化的影响很小，主要是铅离子的迁移和吸附。研究表明，方铅矿与黄铁矿之间的电偶作用改变了它们的表面组成，增加了浮选分离的难度。
The dissolution behavior and surface composition of galena and pyrite in their coexisting flotation system were studied by metal ion releasing experiment and XPS analysis, to reveal the influence of galvanic interaction on their flotation. The results indicated that the dissolution of lead ions from galena surface was strongly enhanced in the presence of pyrite, significantly depending on the pyrite content. The dissolution of iron ions from pyrite surface was also enhanced in the presence of galena, but the effect of galena content was small. XPS analysis verified that the galvanic interaction enhanced the galena oxidation, leading to an increase in oxysulfide/hydroxide components on its surface. However, the galvanic interaction only had little impact on the pyrite oxidation, other than the migration and adsorption of lead ions. This work demonstrated that the galvanic interaction between galena and pyrite altered their surface components and increased the difficulty in flotation separation process.
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影响因子：
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作者：
G. Fairthorne;D. Fornasiero;J. Ralston
通讯作者：
G. Fairthorne;D. Fornasiero;J. Ralston
影响因子：
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发表时间：
2012-09
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11.8
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通讯作者：
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影响因子：
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