CAJ | 학술논문

研究抑制剂甘油基黄原酸钠(SGX)在铁闪锌矿与黄铁矿浮选分离过程中的作用机理.通过浮选实验考察该抑制剂对硫化矿物的浮选抑制行为.结果表明,用丁黄药作捕收剂,在SGX存在下铁闪锌矿能被Cu2+活化从而具有良好的可浮性,而黄铁矿不能被Cu2+活化;在pH为4-11的范围,SGX的用量小于50 mg/L时,可以实现两种矿物的选择性分离.动电位分析表明,SGX在Cu2+存在的条件下不能阻止丁黄药的阴离子在铁闪锌矿表面的吸附,但能阻止丁黄药的阴离子在黄铁矿表面的吸附.吸附等温测试结果表明,SGX在黄铁矿表面的吸附量远比在铁闪锌表面量大.
연구억제제감유기황원산납(SGX)재철섬자광여황철광부선분리과정중적작용궤리.통과부선실험고찰해억제제대류화광물적부선억제행위.결과표명,용정황약작포수제,재SGX존재하철섬자광능피Cu2+활화종이구유량호적가부성,이황철광불능피Cu2+활화;재pH위4-11적범위,SGX적용량소우50 mg/L시,가이실현량충광물적선택성분리.동전위분석표명,SGX재Cu2+존재적조건하불능조지정황약적음리자재철섬자광표면적흡부,단능조지정황약적음리자재황철광표면적흡부.흡부등온측시결과표명,SGX재황철광표면적흡부량원비재철섬자표면량대.
The depression of pyrite in marmatite flotation by sodium glycerine-xanthate (SGX) was investigated through microflotation, zeta potential and adsorption measurements. The flotation tests of mineral show that in the presence of SGX, marmatite can be activated by Cu2+ and shows good flotability, while pyrite cannot be activated and therefore shows poor flotability. At the pH value range from 4 to 11, the flotation selectivity between marmatite and pyrite is obvious when the SGX concentration is below 50 mg/L. The depression mechanism of SGX on sulfide minerals is discussed based on zeta potential and adsorption isotherm. Zeta potential measurement demonstrates that in the presence of Cu2+, SGX can strongly adsorb on the surface of pyrite, while it cannot adsorb on the surface of marmatite. The results of adsorption isotherms show that the adsorption density of SGX on pyrite is greater.