CAJ | 학술논문

通过浮选试验、接触角测定后矿物颗粒黏着功的计算以及芘荧光探针检测，考察捕收剂油酸钠对钼酸钙及磷灰石的浮选性能。结果表明：在碱性条件下，两种矿物的浮选行为相似，浮选回收率均可达到80%以上，油酸钠对钼酸钙和磷灰石有很好的捕收性能。六偏磷酸钠用量达到220 mg/L时，钼酸钙的回收率为62.5%，而此时磷灰石的回收率仅有20.3%，两种矿物的可浮性差异显著增加。油酸钠可以显著增加两种矿物颗粒的黏着功，使其更易向气泡粘附并上浮。六偏磷酸钠显著扩大两种矿物的表面疏水性差异，优化其浮选分离条件。油酸钠在钼酸钙及磷灰石表面未形成胶束、半胶束吸附和非静电吸附，而是化学吸附。
통과부선시험、접촉각측정후광물과립점착공적계산이급비형광탐침검측，고찰포수제유산납대목산개급린회석적부선성능。결과표명：재감성조건하，량충광물적부선행위상사，부선회수솔균가체도80%이상，유산납대목산개화린회석유흔호적포수성능。륙편린산납용량체도220 mg/L시，목산개적회수솔위62.5%，이차시린회석적회수솔부유20.3%，량충광물적가부성차이현저증가。유산납가이현저증가량충광물과립적점착공，사기경역향기포점부병상부。륙편린산납현저확대량충광물적표면소수성차이，우화기부선분리조건。유산납재목산개급린회석표면미형성효속、반효속흡부화비정전흡부，이시화학흡부。
The flotation performance of sodium oleate (SOL) on powellite and apatite was investigated through flotation tests, contact angle measurements, work of adhesion calculations and pyrene fluorescent probe detections. The results show that the recovery of two minerals is more than 80% and their flotation behaviors are similar under alkaline conditions. And SOL has good flotation performance on both powellite and apatite. Sodium hexametaphosphate (SHMP) decreases of flotation recovery of powellite and apatite at varying degrees, and the recovery of powellite and apatite are 62.5%and 20.3%, respectively, at SHMP dosage 220 mg/L. SOL can significantly augment the work of adhesion of the two kind of mineral grains, which make them much easier to be absorbed by bubbles and to rise with them. SHMP enlarges dramatically the difference of hydrophobicity between apatite and powellite, which optimizes the flotation separation conditions of two minerals. SOL absorbs on powellite and apatite by chemisorptions rather than micelle, half micelle adsorption or electrostatic adsorption.