Sand Mill

This type of sand mill consists of a Jacketed vessel of appropriate diameter. All the contact parts i.e.the rotating shaft,the disc and the inner shell of the Jacketed vessel consist of S.S.material. The output of the mill depends upon the capacity of the shell.The peripheral speed of the mill is between 12 m/s to 18 m/s depending on the size of the mill.

The grinding media is extremely fine. uniform and dispersion is achieved by means of glass beads ranging from 0.5 mm to 1.5 mm. The discharge is made of two half mesh screens which can be easily removed and cleaned. The unit is fitted with a volumetric pump for variable discharge.

Sand mills are vertical bead mills which are used for particle size reduction and dispersing of pigments in liquids in the paint, ink & coating industries. Particle size reduction up-to 2 microns is possible in a single pass. The material to be processed is pumped from the bottom of the mill into the milling chamber which is filled with grinding media. The media is agitated by a shaft fitted with numerous discs along its length. As the material moves upwards it is subjected to high hydraulic & shearing forces which results in fine grinding of the material. The material then passes through the screen which separates the media from the mill base. Mills are jacketed to provide for efficient cooling of the mill base.