阳离子捕收剂对高岭石的捕收性能及动力学模拟

发布时间：2018-03-13 08:53

本文选题：煤系高岭石　切入点：浮选　出处：《中国矿业》2017年05期 　论文类型：期刊论文

【摘要】：通过单矿物浮选试验、Zeta动电位测定、红外光谱测试和MS 6.0分子动力学模拟,分析了十二胺盐酸盐(DAH)和十二胺聚氧乙烯醚(AC1201)对煤系高岭石的浮选行为和作用机理。结果表明,药剂浓度为750g/t时,AC1201可较好地浮选高岭石。借助MS软件模拟,构建DAH和AC1201单分子在高岭石(001)面的最优吸附构型,计算结果表明:AC1201分子距高岭石(001)面的最小距离小于DAH分子距高岭石表面的最小距离,而且AC1201分子与矿物表面的接触面积大于DAH,吸附能更低。理论计算和浮选实验结果相互一致,可为探索高岭石浮选药剂提供理论基础。
[Abstract]:The flotation behavior and mechanism of 12 amine hydrochloric acid (DAH) and 12 amine polyoxyethylene ether acid (AC1201) on coal series kaolinite were analyzed by means of determination of Zeta potential, infrared spectroscopy and molecular dynamics simulation of MS 6.0. Kaolinite can be floatated well at concentration of 750 g / t. The optimal adsorption configuration of DAH and AC1201 on kaolinite surface was constructed by means of MS software simulation. The calculated results show that the minimum distance between the molecule AC1201 and kaolinite surface is smaller than that between DAH molecule and kaolinite surface, and the contact area between AC1201 molecule and mineral surface is larger than that of kaolinite surface, and the adsorption energy is lower. It can provide a theoretical basis for exploring kaolinite flotation reagents.
【作者单位】：太原理工大学矿业工程学院;
【分类号】：TD923.13;TD97

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