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Prediction of Hydrophobic Reagent for Flotation Process Using Molecular Modeling
ACS Omega ( IF 4.1 ) Pub Date : 2018-06-18 00:00:00 , DOI: 10.1021/acsomega.8b00413
Mohamed A. M. Abdalla 1 , Huiqing Peng 1 , Di Wu 1 , Lenna Abusin 1 , Tawum J. Mbah 1
Affiliation  

The interaction or nonbonded energies of base organic ions and water molecules during the flotation process of minerals have important meanings for organizing hydrophobic and stable collectors. Furthermore, the interaction, cross-term, and valence energies of optimized structures are important for understanding the properties and structures of selective collectors. The simulation of pure scheelite mineral (PSM) surfaces with four different negative ions, using an adsorption locator module is demonstrated. The interaction energies for base organic ions and water molecules were resolved and detected by shaping the best hydrophobic interaction and the most stable suspension over the PSM surface (112) and (101). The adsorption locator results for base organic ions and water molecules on PSM surfaces (112) and (101) using buffer width 0.5 Å and temperature range from 318.15 to 283.15 K confirmed the results obtain from Forcite calculations. The results have demonstrated that the possibilities of using consistent valence force field implemented by Forcite and adsorption locator modules in the selection of flotation reagents are cost saving. Furthermore, hydrophobicity of the main negative ions in soaps were solved by the simulation methods and results are in a good agreement with the experimental methods that proved that mustard soap is more selective on the mineral surfaces than sunflower soap when used as a collector. Increasing the molecular weight of negative ions increases the interaction energy between base collector ions and PSM surfaces (112) and (101) significantly.

中文翻译:

浮选过程中疏水试剂的分子模拟预测

矿物浮选过程中基础有机离子与水分子的相互作用或非键能对组织疏水稳定的捕收剂具有重要意义。此外,优化结构的相互作用能,交叉能和价能对于理解选择性集电极的性质和结构也很重要。演示了使用吸附定位器模块模拟具有四个不同负离子的纯白钨矿矿物(PSM)表面。通过在PSM表面(112)和(101)上形成最佳的疏水相互作用和最稳定的悬浮液,可以解析和检测基础有机离子和水分子的相互作用能。使用缓冲宽度0,在PSM表面(112)和(101)上的基本有机离子和水分子的吸附定位器结果。5Å和318.15至283.15 K的温度范围证实了从Forcite计算获得的结果。结果表明,在浮选试剂的选择中使用由Forcite和吸附定位器模块实现的一致化合价力场的可能性。此外,通过模拟方法解决了肥皂中主要负离子的疏水性,结果与实验方法吻合良好,实验方法证明芥子皂在用作矿物捕收剂时在矿物表面比向日葵皂更具选择性。负离子分子量的增加显着增加了基础集电极离子与PSM表面(112)和(101)之间的相互作用能。结果表明,在浮选试剂的选择中使用由Forcite和吸附定位器模块实现的一致化合价力场的可能性。此外,通过模拟方法解决了肥皂中主要负离子的疏水性,结果与实验方法吻合良好,实验方法证明芥子皂在用作矿物捕收剂时在矿物表面比向日葵皂更具选择性。负离子分子量的增加显着增加了基础集电极离子与PSM表面(112)和(101)之间的相互作用能。结果表明,在浮选试剂的选择中使用由Forcite和吸附定位器模块实现的一致化合价力场的可能性。此外,通过模拟方法解决了肥皂中主要负离子的疏水性,结果与实验方法吻合良好,实验方法证明芥子皂在用作矿物捕收剂时在矿物表面比向日葵皂更具选择性。负离子分子量的增加显着增加了基础集电极离子与PSM表面(112)和(101)之间的相互作用能。通过模拟方法解决了肥皂中主要负离子的疏水性,其结果与实验方法吻合良好,实验方法证明芥子皂在用作矿物捕收剂时在矿物表面的选择性比向日葵皂更高。负离子分子量的增加显着增加了基础集电极离子与PSM表面(112)和(101)之间的相互作用能。通过模拟方法解决了肥皂中主要负离子的疏水性,其结果与实验方法吻合良好,实验方法证明芥子皂在用作矿物捕收剂时在矿物表面的选择性比向日葵皂更高。负离子分子量的增加显着增加了基础集电极离子与PSM表面(112)和(101)之间的相互作用能。
更新日期:2018-06-18
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