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为探究新型酯基季铵盐阳离子捕收剂M-3、M-N与传统药剂十二胺的泡沫性能,由微观泡沫兼并试验测试两相泡沫性能。以石英纯矿物和磁铁矿纯矿物为试样,对比药剂在不同矿物粒度、浓度条件下产生的三相泡沫性能差异;采用表面张力测试,衡量各药剂形成泡沫的难易程度。通过三相接触角测试,研究药剂种类对石英界面疏水性的影响。结果表明:药剂浓度为3×10~(-3) mol/L,灌注速度为1.30mm/s时,M-3兼并时间最短为0.050s,M-N为0.100s,十二胺为0.141s;三相泡沫稳定性随着矿物粒度的减小、浓度的增加而加强。当粒度为-25μm,浓度为6%时,3种药剂的消泡顺序由快至慢为M-3>M-N>十二胺;表面张力表明,3种药剂起泡性有强到弱顺序为M-3>M-N>十二胺;三相接触角表明,各药剂浓度为3×10~(-3)mol/L时,十二胺的石英接触角为102.49°,M-3与M-N的石英接触角分别为116.00°和109.50°。综合对比可知,M-3与M-N是具有良好泡沫性能的阳离子捕收剂。
In order to explore the foam properties of the new ester quaternary ammonium salt cation catchers M-3, M-N and the traditional reagent dodecylamine, the two-phase foam performance was tested by the micro-foam annexation test. Quartz pure minerals and pure magnetite samples were used to compare the performance of three-phase foams with different mineral particle size and concentration. The surface tension test was used to measure the ease with which the foams were formed. Through the three-phase contact angle test, study the influence of agent type on the interface hydrophobicity of quartz. The results showed that the shortest M-3 co-integration time was 0.050s, the MN was 0.100s and the dodecylamine was 0.141s when the drug concentration was 3 × 10 -3 mol / L and the perfusion rate was 1.30mm / s. Phase foam stability with the mineral particle size decreases, the concentration increases. When the particle size is -25μm and the concentration is 6%, the order of defoaming of the three agents is M-3> MN> dodecylamine. The surface tension shows that the defoaming order of the three agents is from strong to weak, M-3> MN> dodecylamine. The contact angle of three phases indicates that the contact angle of quartz with dodecylamine is 102.49 ° at each concentration of 3 × 10 -3 mol / L, Quartz contact angles were 116.00 ° and 109.50 °, respectively. Taken together, M-3 and M-N are cationic collectors with good foam properties.