油酸钠-醇组合药剂对高钠盐溶液体系萤石浮选的影响  

Effects of sodium oleate-alcohol combined reagent on flotation of fluorite in high sodium salt environment

作　　者：李维康 周伟光 何徐翰 张艺扬 阙川杰 彭耀丽[1,3] LI Weikang;ZHOU Weiguang;HE Xuhan;ZHANG Yiyang;QUE Chuanjie;PENG Yaoli(Key Laboratory of Coal Processing and Efficient Utilization,Ministry of Education,China University of Mining and Technology,Xuzhou 221116,China;State Key Laboratory of Mineral Processing,BGRIMM Technology Group,Beijing 102600,China;School of Chemical Engineering and Technology,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]中国矿业大学煤炭加工与高效洁净利用教育部重点实验室,徐州221116 [2]矿冶科技集团有限公司矿物加工科学与技术国家重点实验室,北京102600 [3]中国矿业大学化工学院,徐州221116

出　　处：《中国有色金属学报》2025年第3期969-978,共10页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(52104280);矿冶科技集团有限公司矿物加工科学与技术国家重点实验室开放基金资助项目(BGRIMM-KJSKL-2023-03);昆明理工大学云南省战略金属矿产资源绿色分离与富集重点实验室开放基金资助项目(202205AG070012)。

摘　　要：通过一系列现代检测手段研究了油酸钠(NaOl)与乙二醇(EG)或甲基异丁基甲醇(MIBC)组合药剂对高钠盐溶液体系萤石浮选的影响及其作用机理。结果表明:EG对NaOl浮选萤石的影响与Na^(+)浓度有关,低Na^(+)浓度条件(<2×10^(-4)mol/L)下NaOl-EG组合药剂的捕收能力略弱于NaOl的,随着Na^(+)浓度升高,NaOl-EG组合药剂的捕收能力逐渐强于单一NaOl的。在不同Na^(+)浓度环境中,尤其是当Na^(+)浓度高于2×10^(-4)mol/L时,MIBC均能强化NaOl对萤石的捕收。相较于单一NaOl,组合药剂起泡能力更强,但泡沫稳定性更差。醇能够促进NaOl在萤石表面的吸附,减小颗粒间的静电排斥作用。由于高钠盐溶液体系NaOl-醇组合药剂能够强化萤石浮选,使得组合药剂能够显著地弱化高浓度Na^(+)对NaOl诱导的萤石颗粒疏水聚团的抑制作用。The effects of sodium oleate(NaOl)combined with ethylene glycol(EG)or methyl isobutyl methanol(MIBC)on fluorite flotation and the possible underlying mechanism in the high sodium salt solution were investigated by a series of modern test methods.The results show that the effect of EG on NaOl flotation of fluorite is related to the Na^(+)concentration,the collecting ability of NaOl-EG combined reagents is slightly weaker than that of NaOl under the condition of low Na^(+)concentration(<2×10^(-4) mol/L).And with the increase of Na^(+)concentration,the collecting ability of NaOl-EG combined reagents is gradually stronger than that of NaOl.In contrast,in the experimental Na^(+)concentration range,MIBC is able to enhance the flotation of fluorite by NaOl,especially when the Na^(+)concentration is higher than 2×10^(-4) mol/L.The combined reagents has a stronger foaming ability than single NaOl,but the foaming stability is poorer.On the other hand,the presence of FA can promote the adsorption of NaOl on the fluorite surface and reduce the electrostatic repulsion between particles.Moreover,the combined reagents can significantly weaken the inhibition effect of high concentration of Na^(+)on the hydrophobic aggregation of fluorite particles induced by NaOl,which is one of the most important reasons for the NaOl-alcohol combined reagents to strengthen the fluorite flotation in the high sodium salt solution.The results of this study can provide a reference for revealing the behavioral characteristics of fluorite mineral flotation in the high sodium salt system and suggesting potential means of regulation.

关 键 词：萤石 油酸钠 乙二醇 MIBC 组合药剂 

分 类 号：TD91[矿业工程—选矿]