(1. 廣西大學(xué) 資源與冶金學(xué)院, 南寧 530004; 2. 廣西大學(xué) 化學(xué)化工學(xué)院, 南寧 530004;
3. 廣西民族大學(xué) 化學(xué)與生態(tài)工程學(xué)院，南寧 530006)
摘 要: 考察偶氮類藥劑對方鉛礦、脆硫銻鉛礦、鐵閃鋅礦、黃鐵礦和黃銅礦的抑制作用。浮選試驗結(jié)果表明：單偶氮類藥劑對硫化礦無抑制作用，雙偶氮藥劑的抑制作用較弱或無抑制作用，三偶氮類藥劑對硫化礦具有很強的抑制作用。偶氮類藥劑的前線軌道能量計算及分子結(jié)構(gòu)與抑制性能關(guān)系的分析表明：藥劑與礦物的前線軌道能量差值可作為偶氮類藥劑抑制性能的一個初步定量判據(jù)，偶氮類藥劑的抑制性能取決于其分子結(jié)構(gòu)。
關(guān)鍵字: 偶氮類藥劑；有機抑制劑；硫化礦；浮選試驗；前線軌道能量
（1. College of Resources and Metallurgy, Guangxi University, Nanning 530004, China;
2. College of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China;
3. College of Chemistry and Ecoengineering, Guangxi University for Nationalities, Nanning 530006, China）
Abstract:The depression effects of azo organic depressants on galena, jamesonite, marmatite, pyrite and chalcopyrite were investigated by flotation test. The flotation results indicate that single-azo compounds have no depression effect on sulphide minerals, the double-azo compounds have no or weak depression effect, and the triple-azo reagents have a good depression effect on sulfide minerals. The frontier molecular orbital energy calculation and analysis of relationship between molecular structure and azo reagents depressing effect indicate that the frontier orbital energy differences between reagents and minerals can be a preliminary quantitative analysis criterion. The depressing ability of azo reagents is determined by their molecular structures.
Key words: azo reagent; organic depressant; sulphide mineral; flotation test; frontier orbital energy
