蛇纹石和绿泥石通常是镍矿石中的主要含MgO的硅酸盐脉石矿物,尽管它们是亲水的矿物,然而有报道认为,它们可以通过夹带或与硫化矿物呈包裹体而进入到精矿中。本研究发现,蛇纹石和绿泥石以及石英能够被Cu(Ⅱ)和Ni(Ⅱ)活化,并且在pH7~10范围内被黄药浮起。在该pH范围内,Cu(Ⅱ)和Ni(Ⅱ)的羟基络合物呈稳定状态,并通过在矿物表面吸附或沉淀而促进黄药的吸附(形成疏水的黄原酸组分、黄原酸铜和双黄药),从而使这些矿物实现浮选。在pH7~10范围内,铜离子对这些矿物的活化能力比镍离子强得多,因此,有报导称,在pH7~10范围内,尤其是在加入硫酸铜活化浮选速度慢的镍黄铁矿时,蛇纹石和绿泥石也可能进入浮选精矿中。 Serpentine and chlorite are generally the major MgO-bearing silicate gangue minerals in nickel ores. Although they are hydrophilic minerals, it has been reported that they can be entrapped or entrapped with sulphide minerals into Concentrate. The study found that serpentine, chlorite and quartz can be activated by Cu (Ⅱ) and Ni (Ⅱ) and floated by xanthate at the pH range of 7-10. Within this pH range, the hydroxyl complex of Cu (II) and Ni (II) is in a stable state and promotes xanthate adsorption by adsorbing or precipitating on the mineral surface (forming a hydrophobic xanthogen component, Acid copper and double xanthate), so that these minerals flotation. In the pH range of 7 ~ 10, copper ion activation of these minerals is much stronger than the nickel ions, therefore, it was reported that in the pH range of 7 to 10, especially in the activation of copper sulfate activated flotation slow nickel yellow iron Ore, serpentine and chlorite may also enter the flotation concentrate.