一、前言颗粒密度值是基本的颗粒物性值之一。测量颗粒密度值的方法有浸液法和气体容积法之分。美国 micromeritics 公司研制的1320型自动密度测定仪属于气体容积法。其特点为;仪器结构紧凑、占地面积小,按程序进行压力、体积的自动调正,操作简便、快速并自动显示出样品的密度值。因此可广泛 First, the introduction Particle density value is one of the basic particle properties. The method of measuring the particle density value is submerged method and gas volume method. American micromeritics developed 1320 automatic density meter belongs to gas volumetric method. Its characteristics are: instrument structure is compact, small footprint, according to the program pressure, the volume of automatic adjustment, easy to operate, fast and automatically shows the sample density. It can be wide