CAJ | 학술논문

采用了新型Gemini双季铵盐捕收剂丁烷-1,4-双十二烷基二甲基溴化铵（BDDA）和乙烷-1,2-双十二烷基二甲基溴化铵(EDDA)对比研究了其对高岭石、叶腊石、伊利石的浮选行为及作用机理。单矿物试验结果表明，在广泛的pH范围内，新型Gemini双季铵盐捕收剂BDDA和EDDA对三种铝硅酸盐矿物具有优异的捕收性能，且BDDA的捕收能力强于EDDA。红外光谱和动电位研究表明，Gemini双季铵盐捕收剂对三种铝硅酸盐矿物的作用机理为静电吸附和氢键作用。采用DFT密度泛函理论，在B3LYP/6-31G(d)水平上对捕收剂阳离子BDDA2+和EDDA2+进行量化计算，结果表明BDDA的捕收能力强于EDDA。这与单矿物浮选结果、动电位测定结果一致。
채용료신형Gemini쌍계안염포수제정완-1,4-쌍십이완기이갑기추화안（BDDA）화을완-1,2-쌍십이완기이갑기추화안(EDDA)대비연구료기대고령석、협석석、이리석적부선행위급작용궤리。단광물시험결과표명，재엄범적pH범위내，신형Gemini쌍계안염포수제BDDA화EDDA대삼충려규산염광물구유우이적포수성능，차BDDA적포수능력강우EDDA。홍외광보화동전위연구표명，Gemini쌍계안염포수제대삼충려규산염광물적작용궤리위정전흡부화경건작용。채용DFT밀도범함이론，재B3LYP/6-31G(d)수평상대포수제양리자BDDA2+화EDDA2+진행양화계산，결과표명BDDA적포수능력강우EDDA。저여단광물부선결과、동전위측정결과일치。
Gemini quaternary ammonium salt surfactants, butane-α, ω-bis(dimethyl dodeculammonium bromide) (BDDA) and ethane-α, β-bis(dimethyl dodeculammonium bromide) (EDDA) were adopted to comparatively study the flotation behaviors of kaolinite, pyrophyllite and illite. It was found that three silicate minerals all exhibited good floatability with Gemini cationic surfactants as collectors over a wide pH range, while BDDA showed a stronger collecting power than EDDA. FTIR spectra and zeta potential analysis indicated that the mechanism of adsorption of Gemini collector molecules on three silicate minerals surfaces was almost identical for the electronic attraction and hydrogen bonds effect. The theoretically obtained results of density functional theory (DFT) at B3LYP/6-31G (d) level demonstrated the stronger collecting power of BDDA presented in the floatation test and zeta potential measurement.