Method for measuring granularity of gold mineral

The invention provides a gold mineral granularity measuring method, and belongs to the technical field of process mineralogy. The method comprises the steps of ore grinding, reselection, magnetic separation and nitric acid treatment, weighing, automatic mineralogical analysis, calculation and correction. The method is combined with automatic mineralogical analysis, so that the workload is saved; gold mineral color forming data are introduced for data correction, the data are more reasonable and accurate, and errors are reduced. Compared with the operation of measuring the volume under a microscope and then converting the gold mineral content in the prior art, the method provided by the invention has the advantages that the data is accurate, the gold mineral particle size distribution of a certain gold ore can be accurately measured, and reliable data support is provided for efficiently utilizing gold ore resources. 本发明提供了一种金矿物粒度的测量方法，属于工艺矿物学技术领域。该方法包括磨矿、重选、磁选及硝酸处理、称重、自动矿物学分析、计算与修正步骤。该方法结合自动矿物学分析，节省了工作量；引入金矿物成