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利用激光动电位测定一水硬铝石的等电点为pH =6 2。用阴离子捕收剂十二烷基磺酸钠和油酸钠浮选一水硬铝石 ,十二烷基磺酸钠与一水硬铝石以静电作用为主 ,并发生半胶束吸附 ,最佳浮选范围为pH <6 2 ;而油酸钠浮选一水硬铝石时为化学吸附 ,当油酸钠浓度为 1× 10 - 4 mol L时 ,一水硬铝石最佳浮选范围为pH =5～ 9。溶液化学计算得到的油酸钠浮选一水硬铝石的pH值上限和下限与试验结果一致。红外光谱分析证明油酸钠在一水硬铝石表面发生了化学吸附
The isoelectric point of diaspore was determined to be pH = 62 using laser kinetic potentiometry. Anionic catalysis sodium dodecyl sulfate and sodium oleate flotation of a diaspore, sodium dodecyl sulfate and a diaspore electrostatic interaction dominated, and the occurrence of semi-micellar adsorption, The best flotation range is pH <6 2; while oleic acid flotation diaspore is chemisorption, when the concentration of sodium oleate is 1 × 10 -4 mol L, diaspore is the best Selection range of pH = 5 ~ 9. The upper and lower pH limits of the sodium oleate flotation diaspore calculated by solution chemistry are consistent with the experimental results. Infrared spectroscopy demonstrated that sodium oleate chemisorbed on the diaspore surface