【摘要】 用电化学观点论述了镍黄铁矿表面氧化 ,及其与有机硫代化合物和调整剂的作用机理 .镍黄铁矿表面的状态与矿浆 p H及氧化还原电位有关 ,在矿浆中铁或镍哪种元素首先从矿物表面溶解取决于镍黄铁矿的 Fe/ Ni比值等因素 ;黄药在镍黄铁矿表面的生成物为双黄药或金属黄原酸盐 ,何种产物为主取决于矿浆 p H及氧化还原电位 ;化学调节矿浆电位是目前改善镍黄铁矿浮选最好的方法 .更多还原

【Abstract】 Mechanisms are electrochemically discussed on the interactions of O\-2 and pentlandite,organic sulphocompound and pentlandite, adjustor and pentlandite. The surface condition of pentlandite depends on the pulp’s pH and redox potential. In the pulp, whether Fe or Ni dissolves first from the surface of pentlandite depends on the factors such as the Fe/Ni ratio in the pentlandite. The resultant on the pentlandite’s surface from the reaction of xanthate and pentlandite can be bixanthate or metal xanthate, but which of them is dominant is the responsibility of the pulp’s pH and redox potential. At present,it is believed that a chemical adustment of pulp’s potential is the best way to improve the flotation of pentlandite.更多还原