矿石的化学分析和物理檢驗是地質勘探工作中的眼睛和准繩。而合理的縮減矿石样品又是化学分析和物理檢驗工作最重要步驟之一。很显然,縮減样品使之能得到最后的可靠重量,对化学、物理檢驗結果的精确程度,有着很重要的影响。而且对矿产的經济評价,更有着重大的意义。因为縮減后的試样,如果不能代表原来矿石中的物理性質和化学成份,往往就曲解矿石的真实情況,而对矿 The chemical analysis and physical examination of ores are the eyes and yardstick in geological exploration work. Reasonable reduction of ore samples is one of the most important steps in chemical analysis and physical inspection. Obviously, reducing the sample so that it can get the final reliable weight, the chemical and physical test results have a very important impact. Moreover, the economic evaluation of minerals is of great significance. Because of the reduced sample, if you can not represent the physical properties of the original ore and chemical composition, often misinterpreted the true situation of ore, and ore