乙二胺磷酸钠对赤铜矿硫化浮选的影响及其机理

Effect of Sodium Ethylenediamine Phosphate on Sulfurized Flotation of Cuprite and Its Mechanism

通过单矿物浮选实验,考察了乙二胺磷酸钠对赤铜矿硫化浮选的影响.采用矿物表面X射线光电子能谱分析、矿物表面Zeta电位检测、药剂在矿物表面吸附能分析和矿物表面捕收剂吸附量测试等方法,探讨了乙二胺磷酸钠对赤铜矿硫化浮选的影响机理.结果表明:乙二胺磷酸钠能够使硫化后的赤铜矿矿物表面铜、硫元素的含量增加,负电性增强,使HS-在矿物表面的吸附能负值增加,硫化反应更易发生,进而改善了矿物表面的硫化效果,增加了矿物表面捕收剂的吸附量,提高了赤铜矿硫化浮选的回收率.

The effect of sodium ethylenediamine phosphate on sulfide flotation of cuprite was investigated by single mineral flotation tests.The influence mechanism of sodium ethylenediamine phosphate for sulfide flotation of cuprite was studied by means of X-ray photoelectron spectroscopy,Zeta potential,adsorption energy of reagents on mineral surface and adsorption capacity of collector.The results showed that the sodium ethylenediamine phosphate can increase the content of copper and sulfur elements on the surface of the sulphide cuprite mineral,increase the negative value of the adsorption energy of HS-on the surface of the mineral,and make the sulphide reaction easier occur,thus improving the sulphide effect on the surface of the mineral,increasing the adsorption capacity of the mineral surface collector,and improving the recovery rate of sulphide flotation.