Fineness of grind is a measure of the size and distribution of particulate materials, usually used to describe the Fineness and uniformity of solid materials after grinding or grinding treatment. It describes the particle size and Particle size distribution of particulate materials, also known as the Fineness of particulate materials.
Fineness of grind is usually measured using sieve and Grinder. By putting the material into the Grinder and grinding within a certain period of time, then sieving the powder sample through the sieve, and finally dividing the sample into different particle size ranges according to the size of the sieve aperture, the distribution of particulate matter is obtained. Several indicators are usually used to represent fineness of grind, including average particle size, particle distribution, Linear dispersion, specific surface area, etc.
Fineness of grinding is one of the important indicators to measure the quality and performance of materials. In the fields of chemistry, pharmaceuticals, Coatings, plastics, food and construction, fineness of grinding is an important quality control parameter because it directly affects the physical, chemical and mechanical properties of materials. For example, in the pharmaceutical industry, the solubility and bioavailability of drugs are affected by the fineness of grinding; in the Coating industry, the fineness of grinding determines the Gloss and hiding power of coating; in the construction industry, the fineness of grinding determines the strength and durability of concrete.
Fineness gauge can also be used for measurement of fineness of grinding materials. Fineness gauge is a simple device for measurement of asperity and smoothness of materials such as Coatings, paints, inks and cosmetics.
The principle of the Fineness gauge is to cross a standardized scraper across the surface of the coating, and then determine the asperity of the coating based on the depth of the scratches left on the coating. This method is usually used to measure the order of magnitude of asperity, but the Fineness gauge may not be accurate enough for higher-level Fineness measurements.
