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the difference between sand mill and three roller machine
- Jul 16, 2018 -

In this era of more and more developed industries, the machinery and equipment used in the chemical industry will become more diverse and more widely used. However, professional and general-purpose affirmations are still different, and subtle differences. It doesn't look big, but it may bring different results and results when it is actually used in actual production!

Usually many people will ask, Tonghui Chemical is a sander, but I just want to ask the three-roller, the three-roller feels better. Of course, this is better depends on the specific factors, so today There are some differences between sand mills and three-rollers in terms of sand mills.

First, the working principle

The working principle of the three-roller machine: the grinding effect is achieved by the mutual extrusion of the surfaces of the three horizontal rollers and the friction at different speeds. The roller material of the imported three-roller is centrifugally cast from chilled-hard alloy cast iron, and the surface hardness is above HS70°. The diameter of the roller is highly precise and polished, which is accurate and fine, and the grinding fineness of the material can reach 15μm. Can produce even and fine high quality products. The three-roll mill is an effective grinding and dispersing device for high-viscosity materials.

The working principle of the sand mill is to use the material pump to input the solid-liquid mixture material after pre-dispersion and wetting treatment into the cylinder body, and the material and the grinding medium in the cylinder body are stirred together by the high-speed rotating disperser, thereby making the material The solid particles and the grinding medium in the middle of each other generate more intense collision, friction and shearing effects, and the purpose of accelerating the grinding of fine particles and dispersing aggregates is achieved. The ground material after grinding is separated by a dynamic separator to separate the grinding medium and flow out from the discharge pipe. The horizontal sand mill is especially suitable for dispersing products with high grinding viscosity and fine particle size requirements.

Second, the applicable field

The three-roller is mainly used for grinding various liquid paints and paste materials such as paints, inks, pigments, plastics, cosmetics, soaps, ceramics and rubber. The fineness reaches about 15 μm.

Sand mill is mainly used in various paints, inks, paints, pigments, cosmetics, new materials, ceramic inks, thermal transfer inkjet, nano pigments, magnetic materials, lithium iron phosphate, medicine, electronic paste, alumina materials, Zirconium silicate materials, non-metallic mineral powders, cosmetics, other new nano materials, water-based materials, solvent-based materials, and easily contaminated materials. The fineness can reach 50 nm.

Third, the grinding method

The three-roller is open-grinding. The three-roller is used for grinding high-viscosity materials. The disadvantage is that the solvent is volatile and easy to crust.

The sander is sealed and ground. The sand mill is suitable for medium and high viscosity wet grinding, with wide application range and high productivity.

Compared with grinding equipment such as three-roller, the sand mill has the advantages of high production efficiency, strong continuity, low cost and high product fineness. The process conditions vary greatly, and the fineness requirements can be adjusted and classified by adding and subtracting grinding media. The grinding mill's fineness and efficiency are much higher than that of the three-roller! But for the viscosity of the material is different, the effect will be different! The sander is suitable for products with a relatively low viscosity! The three-roller is suitable for high viscosity products! The three-roller limit can be ground to 3-5 microns, but the sander can be ground to a finer size. The rod-type nano sand mill of Dongguan Yuling Machinery is a non-polluting equipment with a grinding fineness of less than 100nm! If you have high requirements on fineness and mass production, the efficiency of the sander is definitely many times higher than that of the three-roller!