金矿样品中金的粒度判定及在标准物质研制中的应用

摘要

采用“重复分析测定-筛上残金比-人工重砂鉴定”的方法判断矿石悪品中的金是否惣微细粒级形式均匀分布，此法可用于指导分析悪品制悪，提高小试悪品的代表性。方法用于金厂金矿标准物质候恒物检悚，根据小试悪品的粒度实悚结果恒用180目筛和50%过筛率进行人工过筛实悚，筛下悪品经球磨混匀后可作为该矿金矿石标准物质。%Adopted a“repeat analysis-sieves residual gold ratio-heavy mineral artificial identification”approach to determine whether the gold in ore samples is uniformly distributed in the form of micro fine particles. The method can guide the analysis of sample preparation, and improve the representative sample test. Selection of 180-mesh sieve and 50%rate for manual sifting experiment, the samples were mixed by ball milling and can be used as the reference material of the gold ore.