非洲某锂矿石的工艺矿物学

Process Mineralogy of a Lithium Ore in Africa

这是一篇工艺矿物学领域的论文。国外某锂矿研究程度低,矿石不仅具有较高的锂,而且伴生铌、钽、铷、铯等有益元素。为实现矿石资源综合利用,对该矿进行了详细的工艺矿物学研究。采用X射线荧光光谱分析及其他化学分析手段,查明了矿石化学成分;利用电子探针、X射线衍射分析仪、扫描电镜与能谱分析(SEM-EDS)等方法,研究了矿物的嵌布特征,重点考查了锂的赋存状态。研究结果表明:矿石中锂的主要载体矿物为锂辉石,次为磷锂铝石,其他矿物中的锂为包裹、夹杂的不可利用锂。元素配分结果表明,锂精矿的理论品位为6.64%,理论回收率为74.98%。分析了影响选矿回收指标的矿物学因素,摸清了伴生有益组分的赋存状态,为矿山资源综合利用提供了矿物学理论支撑。

This is an article in the field of process mineralogy.The research degree of lithium ores abroad is low,and the ore not only has high lithium but also is associated with niobium,tantalum,rubidium,cesium and other beneficial elements.To realize the comprehensive utilization of ore resources,the process mineralogy of the ore was studied in detail.The chemical composition of the ore was ascertained by X-ray fluorescence spectrometry and other chemical analysis methods.Using electron probe,X-ray diffraction analyzer,scanning electron microscope and energy dispersive spectrometry(SEM-EDS),the distribution characteristics of the mineral were studied,especially the occurrence state of lithium.The results show that the main carrier of lithium in the ore is spodumene,followed by amblygonite,and the lithium in other minerals is unusable lithium wrapped and included.The element partitioning results show that the theoretical grade of lithium concentrate is 6.64%and the theoretical recovery is 74.98%.The mineralogical factors affecting the recovery index of mineral processing were analyzed,and the occurrence state of associated beneficial components was found,which provided the mineralogical theoretical support for the comprehensive utilization of mine resources.