河北某地细粒石墨矿工艺矿物学及选矿工艺研究

Study on Process Mineralogy and Concentrating of the Graphite ore in Hebei

石墨由于具有多种优异性能,被广泛应用于各个行业,但天然产出的石墨,常含有多种矿物,不能直接利用,因此对石墨的选别提纯具有重要意义。本文在对河北某石墨矿石进行原矿性质分析基础上,遵循矿物资源利用的集约原则,提出了多段磨矿多段浮选的工艺流程,最大限度回收目的矿物。经过四段磨矿,一次粗选九次精选选别工艺流程,最终将固定碳含量从6.27%提高到96.55%,精矿中固定碳含量高于高碳石墨精矿标准(GB/T3518-1995)中对固定碳的要求,同时回收率为69.29%,为该矿的开发利用提供了可行的技术方案。

Thanks to has many excellent properties,graphite is widely used in various industries.However,the natural graphite often contains many kinds of minerals and cannot be directly used.Therefore,the separation and purification of graphite is of great significance.Based on the analysis of the properties of the graphite ore in Hebei Province and the principle of intensive utilization of mineral resources,the technological process of multi-stage grinding and multi-stage flotation is proposed to recover the target minerals to the maximum extent.After four-stage grinding and nine-stage roughing and concentrating,the fixed carbon content was increased from 6.27%to 96.55%,which was higher than the requirement of fixed carbon in high-carbon graphite concentrate standard(GB/T 3518-1995),and the recovery rate was as high as 69.29%.