Journal of Central South University

, Volume 25, Issue 12, pp 2971–2978 | Cite as

Improving collecting performance of sodium oleate using a polyoxyethylene ether in scheelite flotation

  • Chen Chen (陈臣)
  • Hai-ling Zhu (朱海玲)
  • Wen-qing Qin (覃文庆)Email author
  • Li-yuan Chai (柴立元)
  • Wen-hao Jia (贾文浩)


In order to improve the scheelite flotation with sodium oleate (NaOL), the effect of a non-ionic polyoxyethylene ether (JFC-5) on the floatability of scheelite was investigated through flotation experiments at 10 °C, compared with 60 mg/L NaOL alone, the recovery of scheelite is improved from 22% to 85% in the presence of JFC-5 with a mass ratio of 20% at pH 10. Moreover, the resistance to Ca2+ of NaOL is increased. The adsorption mechanism was analyzed by zeta potential measurement, contact angle measurement and X-ray photoelectron spectroscopy (XPS) analysis. The results show that the adsorption of NaOL on scheelite surface is enhanced after adding JFC-5 due to the more negative zeta potentials and larger contact angles of scheelite. And the co-adsorption of NaOL and JFC-5 is confirmed by XPS analysis, so it is indicated that the adsorption of JFC-5 decreases the electrostatic repulsion between the oleate ions, resulting in the stronger adsorption of NaOL on scheelite surface. In short, the mixed NaOL/JFC-5 collector can effectively improve scheelite flotation.

Key words

scheelite polyoxyethylene ether synergistic effect low temperature flotation adsorption 



为了增强油酸钠体系下白钨矿的浮选行为,通过浮选试验考察了一种非离子型聚氧乙烯醚JFC-5 对白钨矿在10 °C 时可浮性的影响。与单独使用60 mg/L 油酸钠时相比较,当pH=10,添加质量比为 20%的JFC-5 时,白钨矿的浮选回收率由22%提高到85%。此外,油酸钠的抗钙离子能力得以增强。 通过动电位测试、接触角测量和X 射线光电子能谱(XPS)考察了捕收剂在矿物表面的吸附机理,结 果显示添加JFC-5 后,白钨矿表面的动电位更负且接触角更大,表明油酸钠在白钨矿表面的吸附增强。 XPS 分析结果证实了JFC-5 和油酸钠在白钨矿表面的共吸附,从而推测JFC-5 在白钨矿表面的吸附减 弱低了油酸根离子之间的静电斥力,使得油酸钠在白钨矿表面的吸附更强。总之,油酸钠/JFC-5 组合 捕收剂可以有效改善白钨矿浮选。


白钨矿 聚氧乙烯醚 增效作用 低温浮选 吸附 


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Copyright information

© Central South University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Mineral Processing and BioengineeringCentral South UniversityChangshaChina
  2. 2.School of Metallurgy and EnvironmentCentral South UniversityChangshaChina

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