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There is a great relationship between the mesh size of the finished grinding mill and the selection of the grinding mill. Guilin Hongcheng can design the grinding process for free based on the material hardness, feed particle size, discharge particle size and output, and train technicians on site. Guilin Hongcheng will serve you wholeheartedly. The particle size of the mill material refers to the fineness of the final powder, generally expressed in microns or mesh. Mesh number refers to the particle size or thickness of the material. The general definition is that within 1 inch * The number of meshes within an area of 1 inch (the italicized part is incorrect) is the number of meshes of the screen. The number of meshes that materials can pass through is defined as the number of meshes.: For example, 200 mesh means that the material can pass through 1 inch * Screen with 200 meshes in 1 inch. By analogy, the larger the mesh number, the finer the material particle size, and the smaller the mesh number, the larger the material particle size. Adding a plus or minus sign before the mesh number indicates whether the mesh of that mesh number can be missed. A negative number indicates that the mesh size can be missed, that is, the particle size is smaller than the mesh size. ； A positive number means that the mesh size cannot be missed, that is, the particle size is larger than the mesh size. For example, if the particles are -100 mesh to +200 mesh, it means that these particles can leak through the 100 mesh mesh but not the 200 mesh mesh. When screening particles of this mesh size, the larger mesh size (200) should be placed under the smaller mesh size (100). The particles left in the larger mesh size (200) mesh are -100 to 200 mesh particles. Micron, we usually refer to the particle size of the powder (the maximum length of the particles), for example: The powder particles of special aluminum hydroxide H-WF-100 are 100 microns, approximately 148 mesh, and the powder particles of special aluminum hydroxide H-WF-15 are 15 microns, approximately 988 mesh. According to the fineness, the grinding mill can be divided as follows: ①Coarsely crushed: The raw material particle size is in the range of 40~1500mm, and the finished product particle size is 5~50mm. ② Medium crushing: The raw material particle size is in the range of 10~100mm, and the finished product particle size is 5~10mm. ③Fine grinding: The particle size of raw materials is within the range of 5 to 10 mm, and the particle size of the finished product is less than 100 μm. ④ Ultra-fine grinding: The raw material particle size ranges from 0.5 to 5 mm, and the finished product particle size ranges from 10 to 25 μm. Product discharge particle size 12500 mesh === 1 micron Specific mesh number and micron conversion comparison table Mesh number (mesh) Micron (μm) Mesh number (mesh) Micron (μm) 2 8000 100 150 3 6700 115 125 4 4750 120 120 5 4000 125 115 6 3350 130 113 7 2800 140 109 8 2360 150 106 10 1700 160 96 According to the particle size of the finished product, you can choose a suitable mill: The smallest range is 3μm~22μm ； fine powder mill: Finished product fineness requirements <0.045 (325 mesh), the finest is 1250 mesh ； Raymond mill: The fineness of the finished product is between 613 microns and 440 microns (0.613 mm - 0.44 mm), between 100 and 425 mesh. ； High pressure suspension roller mill: The finished product can be adjusted within the range of 80-425 mesh (the finest is 1000 mesh). By adding a special device in the machine, coarse powder of 30-80 mesh can be produced. ； Extra large grinding machine: Finished product fineness 5 microns ~ 45 microns (325-3250 mesh) ； Ultrafine grinding mill, ultrafine powder grinding machine: The finished product is between 500 mesh (25 microns) and 2500 mesh (5 microns), with the finest 3500 mesh. ； Guilin Hongcheng Mining Equipment Manufacturing Co., Ltd. is a manufacturer specializing in the production of grinding mills. The grinding mill is suitable for grinding barite, marble, limestone, granite and other non-flammable and explosive materials with a Mohs hardness of 7 and a humidity of less than 6%. If hot air is used, it can grind non-flammable and explosive materials with a humidity of 10%-12%, such as soil.: Clay, china clay, bentonite, clay, clay, alumina…… ； non-metallic ores: Gypsum, talc, graphite, fluorite, calcite, zeolite, limestone, barite, apatite, wollastonite, feldspar, quartz…… ； Metal oxides: Manganite, chromite, ilmenite, titanium oxide, bauxite…… ； Chemical synthesis: Coke, petroleum coke, silicon carbide, barium sulfate... Equipment includes Raymond mill, HCM series ultra-fine mill, high-pressure suspension roller mill, micro-powder mill, 6R super-large mill and other equipment.