川北某黑色页岩型铼矿工艺矿物学研究

Study on Process Mineralogy of the Rhenium Ore of Black Shale Type in North Sichuan

通过矿相显微镜、扫描电镜、电子探针、X射线能谱元素面分析等多种手段综合研究了川北某黑色页岩型铼矿中铼的赋存状态。样品为黑色页岩,有机碳含量较高。粘土矿物总量为14.6%,黄铁矿含量16.2%,石英含量37.7%。样品具典型的粘土结构,矿物粒度微细。铼有两种赋存状态,一种呈类质同象形式赋存于黄铁矿内,另一种则以分散形式存在。典型黄铁矿测点Re平均含量为0.024%。黄铁矿是Re的重要载体矿物。建议通过浮选分离黄铁矿,从而实现Re的富集。

The occurrence of rhenium in a black shale type rhenium ore in North Sichuan was studied by means of mineralogical microscope,scanning electron microscope,electron probe microanalysis and energy dispersive X-ray spectrometry.The sample is black shale with high organic carbon content.The total content of clay minerals is 14.6%,pyrite 16.2%,quartz 37.7%.The sample has typical clay structure and fine mineral size.Rhenium has two modes of occurrence,one is in the form of isomorphism in pyrite,the other is in the form of dispersion.The average rhenium content of typical pyrite is 0.024%.Pyrite is an important carrier mineral of rhenium.It is suggested that rhenium can be enriched by flotation separation of pyrite.