The working principle, characteristics and application of sand mill

First, the working principle of the sander

The sand mill is a super-fine particle disperser for horizontal wet continuous production. The pre-mixed raw material is sent to the grinding tank of the main machine, and the grinding tank is filled with an appropriate amount of grinding medium, such as glass beads, to rotate at a high speed through the dispersing blades, so that the grinding medium has sufficient kinetic energy to collide with the dispersed particles to generate shearing force. The dispersing effect is achieved, and the dispersed material is separated from the grinding media by a special separating device. Since it is not necessary to have a high degree of operation skill like the three rollers, uniform and excellent quality can be obtained, and a large number of continuous production can be achieved, so that the quality can be improved and the cost can be reduced, and the dispersion of the high-viscosity substance can also be applied. Paint, ink, medicine, food, cosmetics, pesticides and other industries can be applied.

Second, the characteristics of the sand mill

Advances in grinding media separation systems As the demand for fineness of the product continues to increase, the size of the abrasive media used is getting smaller and smaller. The separation of small-sized grinding media is one of the most difficult problems in the development of sand mills. The small gap area of ​​the slit ring used in the traditional sand mill and the static screen are difficult to separate the small size medium separation! So more and more use of dynamic centrifugal separation systems. The centrifugal force generated by the separation of the rotor to rotate the medium causes the medium to be twisted toward the outer periphery of the rotor, while the center of the rotor is mainly slurry, and the separation screen is arranged at the center of the rotor, and the material can smoothly flow out through the gap of the screen, and will not flow. Blockage and wear. Therefore, the dry gas flow classification principle is applied to the sander media separation.

Third, the application of sand mill

Compared with grinding equipment such as ball mill, roller mill and colloid mill, 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 by adding or subtracting the grinding medium. Sand mill is a kind of high-efficiency grinding and dispersing equipment widely used in industrial fields such as paint coating, cosmetics, food, daily chemicals, dyes, inks, medicines, magnetic recording materials, ferrites and photographic films.

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