What do you mean by "200 eye bentonite" in the data?
Particle size. Usually the particle size of a sphere is expressed in diameter, and the particle size of a cube is indicated by the length of a sphere. For irregular mineral particles, the diameter of a sphere with the same behavior as mineral particles can be used as the equivalent diameter of the particle. The common methods used to determine the particle size of a laboratory are sieve analysis, water analysis and microscopy. Sieve analysis method is used to determine the particle size of materials from 250 to 0.038mm. Laboratory standard sieve test range of 6 ~ 0.038mm; the water analysis method to determine the particle size, particle settling velocity in water, used for the determination of particle size less than 0.074mm material; the microscope can projection area of particles were measured one by one, to determine the particle size, optical microscope measurement range is 150 ~ 0.4 m, the limit of determination of electron microscopy in size up to 0.001 mu m or less.
Particle size of powder is called particle size. As the particle shape is very complex, usually there are several screening methods, such as particle size, sedimentation particle size, equivalent volume size, equivalent surface area, particle size and so on. The granularity is particles can be obtained by screen mesh size, with 1 inches (25.4mm) the number of mesh width of the screen mesh representation, so called "mesh". At present, there is no uniform powder particle size standard at home and abroad, and each enterprise has its own definition and representation of particle size index. In different countries and different industries, the screen specifications have different standards, so the meaning of "target" is difficult to unify.
Refers to the number of orders per square inch empty eye screen, 50 holes per square inch refers to the 50, 500 is 500, the higher the number, the more holes. In addition to said screen hole, it can be said at the same time for the screen by the particle size, the higher the number, the smaller the particle size.
