在浮选矿浆中,导电矿物间经常存在着加伐尼电接触,这种电接触可以影响矿物表面的性质以及它们的可浮性。在充入氮气、空气、氧气的条件下,测定了黄铁矿和磁黄铁矿矿物电极的静电位和加伐尼电流。其结果与两种矿物的耗氧性和浮选行为有关。加伐尼电接触可以提高磁黄铁矿的可浮性,而对黄铁矿则产生不利的影响。通过俄歇能谱、X射线光电子能谱和扫描电镜的应用,证明了在它们相互接触时,磁黄铁矿表面铁的氢氧化物或氧化物和硫酸盐数量减少,而此时这些化合物在黄铁矿表面的数量却有所增加。应用电化学机理对所得结果给予解释。 In flotation slurries, there is often a Galvanic electrical contact between conductive minerals that can affect the properties of the mineral surfaces and their floatability. Under the conditions of nitrogen, air and oxygen, the electrostatic potential and the cofferdam current of the pyrite and pyrrhotite mineral electrodes were measured. The results are related to the oxygen consumption and flotation behavior of the two minerals. Galvanic electrical contact can improve the pyrolytic pyrrhotic pyrite, while the pyrite is adversely affected. The use of Auger spectroscopy, X-ray photoelectron spectroscopy and scanning electron microscopy demonstrated that the amount of iron hydroxide or oxide and sulfate on the surface of pyrrhotite decreased when they were in contact with each other, The number of pyrite surfaces has increased. The results obtained are explained using electrochemical mechanisms.