Choose grinder mill based on the final material size

The industrial grinding mill’s output size is meaning the final size of output powder, measured by micrometer or mesh. Mesh count is measured by counting the number of threads per inch or per centimeter. The larger mesh indicate the finer particle size, and the smaller mesh indicate the larger particle size. plus or minus sign before the mesh indicate whether pass the screen. Minus indicate the material of this mesh can pass the screen, namely, the material size smaller than mesh size. And plus sign indicates the material of this mesh can’t pass the screen. For example, “-100 mesh to +200” mesh indicates those material can pass the 100 mesh screen, but not 200 mesh screen. When screening this material of -100 mesh to +200 mesh, put the 200 mesh screen below the 100 mesh screen so that the final material can be get on the 200 mesh screen.

Micron, we usually mean the size of powder particle size (maximum length of particles). Such as: special aluminum hydroxide H-WF-100 ‘s powder particles is 100 micron or 148 mesh, specialty aluminum hydroxide H - WF-15 ‘s powder particles is 15 micron or 988 mesh.

The following is specific mesh and micron conversion table.

mesh (mesh)　　microns (μm)　　mesh (mesh)　　microns (μm)

2　　　　　　　　8000　　　　　　100　　　　　　150

3　　　　　　　　6700　　　　　　115　　　　　　125

4　　　　　　　　4750　　　　　　120　　　　　　120

5　　　　　　　　4000　　　　　　125　　　　　　115

According to fineness, industrial milling machine can be divided this way:

① rough crush: raw material particle size in the range of 40 ~ 1500mm, the final size in the range of 5 ~ 50mm

② medium crusher: raw material particle size in the range of 10 ~ 100mm, the final size in the range of 5 ~ 10mm

③ micro crush: raw material particle size in the range of 5 ~ 10 mm, the final particle size below 100μm

④ ultra-fine grinding: raw materials in the size range of 0.5 ~ 5mm, final size below 10 ~ 25μm.

Product Unit Conversions : 1 mesh=== 12500μm

Ultrafine grinding mill is a equipment which produces thin powder and super thin powder. It will highten pollution and noise by using deduster and muffler, which achieves environmental protection requirement. Medium-Speed MicroPowder Grinder mill is a new kind of micro-powder processing equipment, which is invented through more than twenty times experiments and improvements, and based on twenty years of mill manufacture experience while absorbing advanced international machine manufacture techniques. HGM series of Three-Ring & Medium-Speed MicroPowder Grinder is mainly used in processing non-inflammable, non-explosive, brittle material with hardness below six mohs, such as calcite, chalk, limestone, dolomite, kaolin, bentonite, talc, mica, magnesite, pyrophillite, ceyssatite, barite, gypsum, alunite, granite, fluorite, phosphate rock, kalium ore, float stone, more than 200 kinds of materials. HGM series of Ultrafine grinder mill medium speed micro powder mill ultrafine powder mill system, is to draw on the advanced milling technology industry in Sweden, for the domestic milling industry trends and market demand for professional users of superfine powder processing and developed a new type of ultra-fine grinder equipment.

HGM series Three-ring Micro Powder Grinder Mill(ultrafine grinding mill) is for super-fine grinder materials with hardness less than 6 in Moh's scale and humidity less than 6 percent such as kaolin, limestone, calcite, marble,talcum, barite, gypsum, dolomite, bentonite mud,mica, pyrophyllite, sepiolite, diatomite, graphite, alunite, fluorite, potassium feldspar, phosphorite, pigment and so on. The granularity of the end products is 325-2500 meshes (0.044-0.0055mm).