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DOI:
矿冶:2023,32(5):-
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聚丙烯酰胺对黄铁矿浮选行为的影响及其机制研究
周艳飞1, 姚伟2, 付强3, 付洪奇2, 杨晓锴2
(1.深圳中金岭南凡口铅锌矿;2.武汉科技大学资源与环境工程学院;3.江西江铜环境资源科技有限公司)
Research on the Effect of Polyacrylamide on the Flotation Behavior of Pyrite and Its Mechanism
zhouyanfei1, yaowei2, fuqiang3, fuhongqi2, yangxiaokai2
(1.Fankou Lead-Zinc Mine;2.College of Resources and Environmental Engineering;3.Jiangxi JCC Environmental Resources Technology Co., LTD)
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投稿时间:2023-06-13    修订日期:2023-06-28
中文摘要: 随着环境保护法规的日益严厉以及矿山绿色发展的需要,选矿废水的回用是矿山发展的必由之路。选矿废水的回用不可避免地在浮选流程中引入了残余药剂,如絮凝剂聚丙烯酰胺(PAM),进而影响矿物的浮选,如黄铁矿的浮选。本研究探究了阴离子型聚丙烯酰胺(APAM)对黄铁矿浮选行为的影响并揭示了其影响机制。研究结果表明,APAM显著降低了黄铁矿的浮选回收率,不利于黄铁矿的浮选回收。APAM大量吸附在黄铁矿表面,阻碍了后续捕收剂乙基黄原酸钾(KEX)的吸附,进而抑制了黄铁矿的浮选。APAM在黄铁矿表面存在着化学吸附作用,APAM通过分子结构中的酰胺基与黄铁矿表面氧化产物(FeOOH、Fe2(SO4)3)中的Fe3+活性位点作用,进而吸附于黄铁矿表面,抑制矿物的浮选。
中文关键词: 黄铁矿  聚丙烯酰胺  氧化产物  浮选
Abstract:With the increasingly strict environmental protection regulations and the need for green development of mines, the reuse of beneficiation wastewater is the only way for the development of mines. The reuse of beneficiation wastewater inevitably introduces residual agents, such as flocculant polyacrylamide (PAM), into the flotation process, which further affects the flotation of minerals, such as pyrite flotation. This study investigated the effect of anionic polyacrylamide (APAM) on the flotation behavior of pyrite and revealed its mechanism. The results showed that APAM significantly reduces the flotation recovery of pyrite, which was not conducive to the recovery of pyrite. A large amount of APAM was adsorbed on the surface of pyrite, which hindered the adsorption of the subsequent collector potassium ethyl xanthate (KEX), thus depressing the flotation of pyrite. APAM was chemically adsorbed on the surface of pyrite. APAM interacted with the Fe3+ active site in the oxidation products (FeOOH, Fe2(SO4)3) on the surface of pyrite through the amide group in the molecular structure, and then adsorbed on the surface of pyrite to depress mineral flotation.
文章编号:20230613004     中图分类号:    文献标志码:
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周艳飞,姚伟,付强,付洪奇,杨晓锴.聚丙烯酰胺对黄铁矿浮选行为的影响及其机制研究[J].矿冶,2023,32(5):.

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