一、前言含铂铬铁矿是铂族金属的重要来源之一,查明铂族元素的赋存状态是进行矿床评价、综合利用的首要前提。由于铂族矿物在铬矿石中的特点多属微粒.(小至12—40μ)、微量(0.0x—0.x克/吨),因而仅用观察光、薄片的研究方法无法达到查明赋存状态的目的。大量化学分折数据表明,在系统实验的基础上所建立的重砂分选方法,可以有效地富集含铂 I. INTRODUCTION Platinum-bearing chromite is one of the important sources of PGMs. It is the first prerequisite to evaluate the occurrence of PGMs and evaluate their comprehensive utilization. Due to the characteristics of the platinum group minerals in chrome ore are mostly microparticles (as small as 12-40μ), trace (0.0x-0.xg / t), so only the observation of light, thin sheet research methods can not be identified Fu The purpose of deposit status. A large number of chemical breakdown data show that in the system experiments based on the established heavy sand sorting method, can effectively enrich the platinum