对河北某难选钼矿,通过光学显微镜、人工重砂、X射线衍射分析以及电子探针分析,确定了该矿主要矿物的组成及含量,详细研究了含钼矿物的化学成分和嵌布特征,以及钼的赋存状态,查清了该矿难选的原因.该矿性质复杂,氧化程度高,矿泥含量多,约71.2％的钼赋存在褐铁矿中.褐铁矿是钼的主要载体矿物,但是褐铁矿集合体多呈胶状、细脉-微细脉结构充填在矿石的裂隙、微裂隙中,粒度多在10um左右,这些不利于选矿富集.%There is a refractory molybdenum mine in Hebei province, Using a optical microscopy, manual artificial heavy concentrate, X-ray diffraction (XRD), electron probe micro-analyzer (EPMA), molybdenum minerals and accompany minerals category and content of samples were studied, including chemical compositions, species, grain size, embedded characteristics, modes of occurrence of molybdenum minerals. ,and the reasons of this refractory molybdenum mine. This mine is complex mineral assemblages. Results also showed high oxidation rate of molybdenum and mudding degree. Perlimonite is the main carrier mineral of molybdenum,but the perlimonite collection which is filling in the fissures,micro-cracks of the ore show colloidal structure and veinlets structure The grain size of perlimonite is more about l0um. These are not conducive to dressing enrichment.
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