Chlorite, as the most representative gangue mineral associated with specularite, of which the separation of these two minerals is difficult. This paper investigated the depression effect of taurine on specularite/chlorite separation via flotation experiments, adsorption tests, contact angle measurements, Zeta potential detection, FT-IR measurements, and XPS analyses. The results of single mineral flotation indicated that chlorite could be depressed selectively by taurine with the recovery of less than 30%, but the floatability of specularite remains high with recovery rate of 81.77% at pH 10. The artificial mixed mineral flotation results confirmed the effectiveness of taurine as a depressant. Surface adsorption, contact angle, and Zeta potential detection revealed taurine primarily adsorbs on the chlorite surface, which hampered the DDA’s subsequent adsorption and results in the chlorite’s poor floatability. The FT-IR spectra and XPS analyses provided further proof that taurine adsorbed on chlorite surface as an electron donor, and part of the electrons transferred from the sulfonic acid group of taurine to metal ions during the adsorption process. In addition, the hydrogen bond between amino-group of taurine and O ions in chlorite surface was also formed in the adsorption process. Finally, optimized adsorption configurations of taurine on chlorite surfaces were proposed.

绿泥石作为与镜面石伴生的最具代表性的脉石矿物，这两种矿物的分离难度很大。本文通过浮选实验、吸附试验、接触角测量、Zeta 电位检测、FT-IR 测量和 XPS 分析研究了牛磺酸对镜面反射石/绿泥石分离的抑制作用。单一矿物浮选结果表明，牛磺酸可以选择性地抑制绿泥石，回收率小于30%，但镜面石的可浮性仍然很高，在pH 10时回收率为81.77%。人工混合矿物浮选结果证实了其有效性。牛磺酸作为抑制剂。表面吸附、接触角和 Zeta 电位检测显示牛磺酸主要吸附在亚氯酸盐表面，这阻碍了 DDA 的后续吸附，导致亚氯酸盐的可浮性差。FT-IR光谱和XPS分析进一步证明牛磺酸作为电子供体吸附在亚氯酸盐表面，部分电子在吸附过程中从牛磺酸的磺酸基团转移到金属离子上。此外，牛磺酸的氨基与亚氯酸盐表面的O离子在吸附过程中也形成了氢键。最后，提出了牛磺酸在亚氯酸盐表面的优化吸附构型。在吸附过程中，部分电子从牛磺酸的磺酸基转移到金属离子上。此外，牛磺酸的氨基与亚氯酸盐表面的O离子在吸附过程中也形成了氢键。最后，提出了牛磺酸在亚氯酸盐表面的优化吸附构型。在吸附过程中，部分电子从牛磺酸的磺酸基转移到金属离子上。此外，牛磺酸的氨基与亚氯酸盐表面的O离子在吸附过程中也形成了氢键。最后，提出了牛磺酸在亚氯酸盐表面的优化吸附构型。