菱镁矿与石英浮选分离的第一性原理研究

FIRST PRINCIPLES STUDY ON FLOTATION SEPARATION OF MAGNESITE AND QUARTZ

随着高品位菱镁矿资源的日益减少,低品位菱镁矿资源的开发具有越来越重要的意义。为了深入研究菱镁矿与石英的浮选分离机制,揭示菱镁矿、石英与浮选药剂的作用原理,本文利用第一性原理对菱镁矿与石英的表面性质进行研究,并模拟了矿物与药剂的相互作用,得出菱镁矿与石英的分离系数。研究结果表明,两种矿物表面电负性和态密度的差异直接影响其与药剂的相互作用。通过分析药剂与矿物作用后的分离系数,可以为浮选药剂的设计研发提供指导。

With gradual depletion of high-grade magnesite resources, it is more and more important to develop low-grade magnesite resources. In order to study flotation separation mechanism of magnesite and quartz, revealing the principle of flotation reagents interacted with magnesite and quartz, the first principles was used to investigate mineral surface properties for magnesite and quartz and the interaction between mineral and reagents was simulated, on which the separation coefficient can be derived. The research results show that the difference of electronegativity and density of states between the two mineral surfaces directly affects its interaction with reagents. By analyzing the separation coefficient of different reagents, we can provide guidance for research and development of flotation rea- gents.