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Brown Fused Alumina Wholesale Suppliers Russia

It is difficult to use a ball mill and a barrel mill to grind industrial 100 grit aluminum oxide media, but the intermittent vibration mill has a better grinding effect. This kind of grinder is used to grind industrial alumina for about 6 to 8 hours, and grind a-Al2O3 for about 0.5 to 3.5. h; after grinding, the material less than 2um accounts for 65% ~ 75%, and the average aluminum oxide blast media 60 grit particle size is 1.0 ~ 1.2um. 

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However, the output of this type of vibration mill is low, and the output of continuous vibration mill is relatively high. Dry grinding of industrial white alumina with a barrel mill has a relatively high output. The sample of this alumina pressed by 45MPa pressure has high water absorption (3.6%) and porosity (12.09%) after firing, And less than 2um is only about 30%. The two-step method is used to produce sintered 1200 grit aluminum oxide, which is generally dry-milled rAl2O3.

Sintered brown fused alumina clinker calcined by vibrating mill dry-milled industrial alumina, calcined at 1750 ~ 1900 ℃, its water absorption is less than 0.5% ~ 2% and porosity is less than 5% ~ 6%. For example, a double-cylinder barrel mill with a length of 6 m and a diameter of 1.635 m has a output of 2.5 to 3.6 t / h, but the 46 grit aluminum oxide milled material is less than 10 um and accounts for 72. %. According to the average particle diameter, the crushing strength is increased by about 1 time.

Adding surface-active substances, such as a hydrophobic silicone organic solution, 0.05% to 0.075%, can reduce the hardness of black corundum particles and improve the dispersion of the material after crushing by the barrel mill. The content of particles less than 10um accounts for about 85%, and the content of particles less than 2um is 46%, can also avoid low density white alumina fine powder sticking to the ball. The addition of surface-active substances can increase the output of the vibrating mill.

The same brown aluminum oxide can be ground, and the grinding time can be shortened by one-half to three-quarters. Adding surface active substances can also improve the fluidity of fine powder and facilitate the transportation of ground materials. When pulverizing industrial alumina with a vibration mill, the relationship between the particle content of less than 10um and the pulverization time. The moisture content of the brown fused alumina manufacturer powder is 8% ~ 10%, yAl2O3.

No matter what kind of mill is used, the use of steel balls as the pink corundum grinding body is better than the use of ceramics and silicon balls, the former can increase the content of the particle size of 1-2um in the milled material. The use of small balls can increase the content of fine powder. For example, under all conditions, the diameter of the sphere is reduced from 15mm to 6mm, the glass bead blasting media suppliers surface area of the grinding body is increased by about 1.5 times.

If the mill is operated for 24 hours, the SiO2 content of the brown aluminium oxide material will increase from 0.2% to 0.3% of the SiO2 content in the raw material to 4.5%. The amount of iron milled by steel balls is not more than 0.05% ~ 0.1%. When pulverizing alumina, it is best to use a corundum ceramic as a lining and a vibratory mill or a ball mill loaded with corundum abrasive. This can ensure sufficient pulverization strength and the purity of the steel grid material after grinding.

white aluminium oxide
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Brown Fused Alumina And White Fused Alumina MOQ: 1 Ton! 19 Years Manufacturing Experience, 35,000m² Workshop Area, Factory Price, Free Samples, Fast Delivery!