The basic knowledge of the grinder is actually very simple,I'll give you a summary:
1.A measure of the size or fineness of the material grain size.
a.mm / micron: 0.074mm/74micron
b. Powder grinding equipment mesh: refers to the 1 square inches (25.4mm) the number of mesh area. Each mesh more, the diameter of the hole is smaller, so it is often used to represent the mesh powder fineness. In the screen, according to different wire diameter, there is a conversion between mesh and mm: 200mesh=0.074mm/74micron
c. Powder grinding equipment specific surface area: refers to the total area per unit mass of material. It is usually used to measure the powder fineness index. unit ㎡/kg or c㎡/g, No relationship with the number of conversion.
d. Powder grinding equipment sieve rate (sieve residue): granular or powder by a sieve percentage. Generally used to describe the grinding effect of.200 meshes, D90 said: after particle size is 200 meshes, the rate of 90%.R80 (r0.08) 12% said: after the particle size of 80um (0.08mm) screen, screen margin less than 12%.
2.The concept of measuring the hardness of materials or the degree of difficulty in grinding.
a.Mohs hardness: aka Moss hardness, a standard hardness of minerals, in 1812 by the German mineralogist Moss (Mohs) first proposed. Scratch application will characterize the pyramid shaped diamond needle test surface scratches minerals occur, with the measured deep scratches are divided into ten grades to show hardness, unit level: f=2 said, 2. Mohs hardness values are not absolute hardness, but the hardness value of the said order.
b. Powder grinding equipment compressive strength: the maximum pressure of rock under the condition of no side beam, usually measured by how many kilograms per square centimeter, 1MPa (Zhao Pa) =10kg/c㎡.
Above is what I want to tell you some basic knowledge, hope to help you!If you have any questions, you can consult customer service. Thank you for reading.
c. Powder grinding equipment specific surface area: refers to the total area per unit mass of material. It is usually used to measure the powder fineness index. unit ㎡/kg or c㎡/g, No relationship with the number of conversion.
d. Powder grinding equipment sieve rate (sieve residue): granular or powder by a sieve percentage. Generally used to describe the grinding effect of.200 meshes, D90 said: after particle size is 200 meshes, the rate of 90%.R80 (r0.08) 12% said: after the particle size of 80um (0.08mm) screen, screen margin less than 12%.
2.The concept of measuring the hardness of materials or the degree of difficulty in grinding.
a.Mohs hardness: aka Moss hardness, a standard hardness of minerals, in 1812 by the German mineralogist Moss (Mohs) first proposed. Scratch application will characterize the pyramid shaped diamond needle test surface scratches minerals occur, with the measured deep scratches are divided into ten grades to show hardness, unit level: f=2 said, 2. Mohs hardness values are not absolute hardness, but the hardness value of the said order.
b. Powder grinding equipment compressive strength: the maximum pressure of rock under the condition of no side beam, usually measured by how many kilograms per square centimeter, 1MPa (Zhao Pa) =10kg/c㎡.
Above is what I want to tell you some basic knowledge, hope to help you!If you have any questions, you can consult customer service. Thank you for reading.