CAJ | 학술논문

合成了一种活性二烷基黄原酸酯捕收剂———S -十二烷基,O -异丙基-黄原酸酯(DIDTC)并将其用于浮选分离黄铜矿和黄铁矿。浮选实验结果表明 DIDTC 具有比丁基黄药更好的选择性,紫外可见光谱证明 DIDTC 对铜离子比铁离子具有更强的吸附性。采用红外光谱和吸附实验研究了 DIDTC 对黄铜矿表面的吸附机理,实验结果表明在碱性环境中 DIDTC 可能通过其分子中的 S 原子和 O 原子同时与黄铜矿表面的铜原子发生了键合,并在浓度较高时形成多层吸附。另外,还采用普遍微扰理论和基于 GGA/PW91作为交换相关函的密度泛函计算对上述结果进行了捕收剂的构效关系分析。
합성료일충활성이완기황원산지포수제———S -십이완기,O -이병기-황원산지(DIDTC)병장기용우부선분리황동광화황철광。부선실험결과표명 DIDTC 구유비정기황약경호적선택성,자외가견광보증명 DIDTC 대동리자비철리자구유경강적흡부성。채용홍외광보화흡부실험연구료 DIDTC 대황동광표면적흡부궤리,실험결과표명재감성배경중 DIDTC 가능통과기분자중적 S 원자화 O 원자동시여황동광표면적동원자발생료건합,병재농도교고시형성다층흡부。령외,환채용보편미우이론화기우 GGA/PW91작위교환상관함적밀도범함계산대상술결과진행료포수제적구효관계분석。
A positive dialkyl dithiocarbonates collector S-dodecyl O-isopropyl dithiocarbonate (DIDTC)was synthesized and used in the flotation separation of chalcopyrite from pyrite.The results of flotation test indicated that DIDTC collector had better selectivity than butyl xanthate. UV-vis spectra demonstrated that DIDTC showed more affinities to Cu2 + ions than to Fe3 + ions. FTIR spectra and adsorption test were executed to study the adsorption mechanism of DIDTC to chalcopyrite.The results elucidated that DIDTC might bond copper atoms of chalcopyrite surface with its sulfur and oxygen atoms in alkaline environments,and formed a multilayer at high concentration.In addition,the results were analyzed from the structure-activity of collectors by generalized perturbation theory and density functional calculation with GGA /PW91 as exchange correlation functional.