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Powder Fineness affect the Raymond Mill work performance

Time:2014年09月02日      Hits:

What is the mineral Powder Fineness's affection to the Raymond Mill work performance.

The mineral powder fineness has very big relations to the Raymond Mill type selection. The Raymond Mill should be selected according to the raw material hardness, feed size, the particle size and yield, milling process design.

Mill powder output size, refers to the final powder fineness, generally used to be indicated by the micron or mesh.


Mesh, refers to the size or thickness of materials, the general is defined in the 1 inch *1 inch area (the italics error) how many mesh number, the number of mesh screen mesh, material through the mesh that is defined as the number of mesh: such as 200, that of the material through the 1 inch *1 "with 200 mesh screen. And so on, the larger mesh material, that the finer the particle size, mesh size is smaller, the larger size of the material. Mesh before the sign said whether leaking through the mesh mesh. Negative numbers can leak through the mesh mesh, i.e. particle size is smaller than the mesh size; and positive number not leaking through the mesh mesh, i.e. particle size larger than the size of meshes. For example, particles of -100 ~+200 mesh, it means that these particles.

From 100 to 200 mesh leakage but not from objective mesh leakage, the number of particles in the screening, should be large number (200) on the small screen mesh (100) below, in large number (200) left the sieve is -100~200 particles.

We usually mean particle size powder size (maximum length of particles) for example: special aluminum hydroxide H-WF-100 its powder particles 100 microns to about 148 mesh, special aluminum hydroxide H-WF-15 its powder particles 15 microns to about 988.


According to fineness, grinding mill can be divided:

The coarse grinding: raw material particle size in the range of 40 ~ 1500mm, 5 ~ 50mm size if the finished product

The crushing: raw material particle size in the range of 10 ~ 100mm, 5 ~ 10mm size if the finished product

The micro comminution granularity of raw materials: 5 ~ 10 mm range, product size if it is less than 100 μ

The superfine comminution granularity of raw materials: the range of 0.5 ~ 5mm, 10 ~ 25 μ refined grain size below M


In accordance with the finished size, can choose the milling machine for:

Fine powder mill: fineness requirements < 0.045 (325 eyes), the fine 1250;

Raymond Mill: finished 613 microns in diameter of ~440 (0.613 mm -0.44 mm), 100-425 mesh;

High speed milling machines: finished projects in the 80-425 mesh (the fine 1000 mesh), the 30-80 mesh coarse powder by adding special device in the machine;

Super large mill: fineness 5 microns ~45 microns (325-3250 mesh);

Superfine mill, ultrafine powder mill: finished in 500 mesh (25 micron) -2500 mesh (5 micron), the fine 3500 mesh.

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