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通过扫描电镜分析和俄歇能谱分析对上房沟钼矿原矿、浮选精矿和浮选尾矿以及三道庄钼矿(易选矿)中辉钼矿进行了表面元素组成和微形貌研究。结果显示上房沟钼矿中辉钼矿表面呈陡峭阶梯状,且氧化强烈,而三道庄钼矿中辉钼矿表面平整,氧化较弱。综合分析认为上房沟钼矿中辉钼矿陡峭阶梯状表面会增加其表面极性面的比重;表面氧化会增加辉钼矿表面非极性面的表面能,改变其表面疏水性。两者都会降低辉钼矿的可浮性。因此上房沟钼矿中辉钼矿表面氧化程度高、表面不平整是影响其浮选效果的主要因素之一。
The surface elemental composition and micromorphology of molybdenite in Shangfanggou molybdenum mine, flotation concentrate and flotation tailings and the Sandaizhuang molybdenum mine (easy dressing) were analyzed by scanning electron microscopy and Auger energy spectrum analysis the study. The results show that the surface of molybdenite in Shangfanggou molybdenum deposit is steep and strongly oxidized, while the surface of molybdenite in Sandaozhuang molybdenum mine is flat and the oxidation is weak. The comprehensive analysis indicates that the steep stepped surface of molybdenite in Shangfanggou molybdenum mine will increase the proportion of its polar surface; the surface oxidation will increase the surface energy of non-polar surface of molybdenite and change its surface hydrophobicity. Both will reduce the floatability of molybdenite. Therefore, the Shangfanggou molybdenite molybdenite surface oxidation degree is high, the surface unevenness is one of the main factors that affect the flotation effect.