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金属矿山 ›› 2019, Vol. 48 ›› Issue (09): 98-101.

• 矿物工程 • 上一篇    下一篇

Ca2+对菱镁矿浮选行为的影响

郗悦,代淑娟,张作金   

  1. 辽宁科技大学矿业工程学院,辽宁 鞍山114051
  • 出版日期:2019-09-15 发布日期:2019-10-10
  • 基金资助:

    基金项目:国家自然科学基金项目(编号:51874168)。

Effect of Ca2+ on Flotation Behavior of Magnesite

Xi Yue,Dai Shujuan,Zhang Zuojin   

  1. School of Mining Engineering, University of Science and Technology Liaoning, Anshan 114051, China
  • Online:2019-09-15 Published:2019-10-10

摘要: 为了尽可能消除难免离子Ca2+对菱镁矿浮选的影响,通过纯矿物浮选实验、Ca2+浮选溶液化学计算和红外光谱分析等方法,考察了油酸钠浮选体系下Ca2+对菱镁矿浮选行为的影响并分析其机理。研究表明:①在油酸钠浮选体系下,在矿浆7≤pH≤12情况下,Ca2+对菱镁矿浮选具有较强的抑制作用,且Ca2+浓度升高对菱镁矿浮选的抑制作用增强。②矿浆中的Ca2+是抑制菱镁矿浮选的主要组分。③在pH=10的碱性条件下,菱镁矿表面存在亲水的—OH吸收峰,证实Ca2+与菱镁矿发生了吸附作用。

关键词: 菱镁矿, Ca2+, 油酸钠, 浮选

Abstract: In order to eliminate as much as possible the effect of unavoidable ions Ca2+ on the flotation of magnesite, the influence of Ca2+ on flotation behavior of magnesite and mechanism analysis under sodium oleate flotation system were investigated through pure mineral flotation experiments, Ca2+ flotation solution chemistry calculations and infrared spectroscopy analysis. The results indicated: ①Under the sodium oleate flotation system, Ca2+ showed a strong inhibitory effect on magnesite flotation in the case of pH of slurry between 7 and 12, and the inhibition effect strengthened with the increase of Ca2+ concentration. ②Ca2+ in the slurry is the main component which inhibited the flotation of magnesite. ③Under alkaline conditions in which pH=10, hydrophilic hydroxyl absorption peak was found on the surface of magnesite, which confirmed the adsorption of Ca2+ on the surface of magnesite.

Key words: Magnesite, Ca2+, Sodium oleate, Flotation