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金属矿山 ›› 2019, Vol. 48 ›› Issue (04): 53-57.

• 矿物工程 • 上一篇    下一篇

霓石溶出金属离子对镜铁矿、霓石可浮性的影响

李明阳1,2,陈泽1,胡义明1,刘军3,张颖异1,高翔鹏1   

  1. 1. 安徽工业大学冶金工程学院,安徽 马鞍山243032; 2. 冶金减排与资源综合利用教育部重点实验室,安徽 马鞍山 243002; 3. 中钢集团马鞍山矿山研究院有限公司, 安徽 马鞍山 243000
  • 出版日期:2019-04-15 发布日期:2019-05-13
  • 基金资助:

    * 国家自然科学基金项目(编号:51674001),安徽省重点研究和开发计划项目(编号:1804a0802207, 1804a0802212),安徽工业大学青年基金项目(编号:RD17100188)。

Effect of Dissolved Metal Ions from Aegirite on the Floatability of Specularite and Aegirite

Li Mingyang1,2,Chen Ze1,Hu Yiming1,Liu Jun3,Zhang Yingyi1,Gao Xiangpeng1   

  1. 1. School of Metallurgy and Resource, Anhui University of Technology, Maanshan 243032, China; 2. Key Laboratory of Metallurgical Emission Reduction & Resources Recycling, Ministry of Education, Maanshan 243002, China; 3. Sinosteel Maanshan Institute of Mining Research Co., Ltd. Maanshan 243000, China
  • Online:2019-04-15 Published:2019-05-13

摘要: 为了研究霓石表面溶出离子Fe3+、Na+对十二胺体系中镜铁矿和霓石可浮性的影响,以0.044~0.074 mm粒级镜铁矿和霓石单矿物为研究对象,进行单矿物浮选试验,并通过Zeta电位测量和溶液化学计算研究其作用机理。结果表明:十二胺对镜铁矿和霓石均具有较好的捕收作用;Fe3+对镜铁矿的抑制效果强于霓石,Na+对2种矿物可浮性均无明显影响;加入Fe3+、Na+均能使镜铁矿和霓石矿物表面电位发生右移,表面电位升高减弱了十二胺在矿物表面的静电吸附;Fe3+主要以亲水性Fe(OH)3沉淀形式吸附在矿物表面,使矿物亲水性增大,从而对矿物产生抑制作用。

关键词: 镜铁矿, 霓石, 十二胺, 浮选, 金属离子

Abstract: In order to research the effect of Fe3+ and Na+ dissolved from aegirite on the flotation of specularite and aegirite in dodecylamine system, single mineral flotation experiment was carried out with 0.044~0.074 mm size fraction minerals of specularite and aegirite. The mechanism was analyzed from views of Zeta potential measurement and solution chemical calculation. The results showed that dodecylamine had a good effect on the collection of specularite and aegirite, while Fe3+ showed a stronger inhibitory effect on specularite than that of aegirite, and Na+ had no significant depression effect on the floatability of these two minerals. The added Fe3+ and Na+ right shifted the surface potential of these two minerals, which wakened the electrostatic adsorption of dodecylamine. Fe3+ adsorbed on the surface of these two minerals mainly in the form of hydrophilic hydroxide precipitation, which increased the hydrophilicity of specularite and aegirite and inhibited their floatability.

Key words: Specularite, Aegirite, Dodecylamine, Flotation, Metal ions