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测定了在不同pH下不同盐和捕收剂存在时萤石和方解石的Zeta电位和红外光谱。研究结果表明 ,萤石的零电点为pH3 6。CaCl2 降低了萤石和方解石的Zeta电位 ,而增大了它们的零电点值。NaCl对萤石和方解石的零电点和Zeta电位影响不大。在碱性介质中 ,Na2 SiO3和Na2 CO3增大了萤石和方解石表面负电荷。红外光谱测定表明 ,阴离子捕收剂 (如油酸和油酸钠 )以化学吸附方式吸附在萤石和方解石表面上。磺酸盐特效吸附在矿物表面上 ,阳离子捕收剂以物理吸附方式吸附在矿物表面上。油酸和油酸钠在不同pH值下以不同吸附量吸附在萤石和方解石表面上
The Zeta potential and the infrared spectra of fluorite and calcite in the presence of different salts and collectors at different pHs were determined. The results show that the zero point of fluorite is pH3 6. CaCl2 reduces the Zeta potential of fluorite and calcite, increasing their zero point values. NaCl has little effect on the zero point and Zeta potential of fluorite and calcite. In alkaline media, Na2SiO3 and Na2CO3 increase the negative charges on the surface of fluorite and calcite. Infrared spectroscopy showed that anionic collectors (such as oleic acid and sodium oleate) chemisorbed on fluorite and calcite surfaces. Sulfonate special effects adsorption on the mineral surface, the cationic collector adsorbed by physical adsorption on the mineral surface. Oleic acid and sodium oleate adsorbed on fluorite and calcite surfaces with different adsorption capacities at different pH values