grain fineness的意思|示意

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Grain fineness（颗粒度）是指某一物质的粒度大小，一般描述一种物料的粒径情况，是确定粉碎机运行、设计及效率最重要的因素之一，物料粒径是影响物料粉碎效果的决定性因素。

Grain fineness refers to the particle size of a material, which is generally used to describe the particle size of a material. It is one of the most important factors to determine the operation, design and efficiency of a crusher. Particle size is the decisive factor affecting the crushing effect of materials.

Grain fineness分布的范围可以根据两个重要指标来定义，指标包括：最小颗粒径（MIN）、最大颗粒径（MAX）以及颗粒径中位数（MEDIAN）。最小颗粒径和最大颗粒径指物料分布的亚像素份，它可以确定粗粒度的物料，以及颗粒度最大值。而颗粒径中位数是反映物料粒度分布的指标，可以描述平均粒径状况。

The range of grain fineness can be defined according to two important indicators, including the minimum particle size (MIN), the maximum particle size (MAX) and the median particle size (MEDIAN). The minimum particle size and the maximum particle size refer to the sub-pixel distribution of the material, which can determine the coarse particle material and the maximum particle size. The median particle size is an indicator reflecting the particle size distribution, which can describe the average particle size condition.

Grain fineness的测量方法遍及质检部门，可以采用光学显微镜、筛和筛分等对其进行测量检测。这里有些技术要求：光学显微镜要求空腔内要求干净且有良好的透明度，能够有效清楚地显示物料粒度分布情况；筛和筛分需要物料和检测筛口形状等要求匹配，方便筛分，减少误差。

Grain fineness measurement methods are widely used in quality inspection departments, and optical microscopes, sieves and screening can be used for measurement and testing. Here are some technical requirements: optical microscope requires clean and good transparency of the cavity, which can effectively and clearly display the particle size distribution of the material; sieving and screening require the material and detection sieve mouth shape to be matched, which is convenient for screening and reduce errors.

总之，Grain fineness（颗粒度）是衡量物料粒径分布情况的重要参数，其值大小不仅影响物料粉碎效果，同时也影响粉碎机的运行状况。质检部门采用光学显微镜、筛和筛分等方法，按照最小颗粒径、最大颗粒径及颗粒径中位数的指标对其进行测量与检测，完成Grain fineness（颗粒度）的测量和分析，为后续粉碎工艺的优化创造价值。

In conclusion, Grain fineness (particle size) is an important parameter to measure the particle size distribution of materials. Its value not only affects the crushing effect of materials, but also affects the operation of crushers. Quality inspection departments use optical microscopes, sieves and screenings to measure and test according to the indicators of minimum particle size, maximum particle size and median particle size, to complete the measurement and analysis of Grain fineness (particle size), and create value for the optimization of subsequent crushing process.