The sand mill is a wet superfine grinding equipment, which is developed from the ball mill.
It is widely used for pigment dispersion and grinding in the ink production process. There are different classifications of sand mills:
According to the structure and shape of the stirring shaft, it can be divided into disc type, rod type, and rod disc type (both bump type).
According to the layout of the grinding cylinder, it can be divided into vertical and horizontal.
According to the volume of the cylinder, it can be divided into laboratory, small, medium, large and super large.
According to the medium separation method, it can be divided into static and dynamic separation sand mills.
According to the energy density (installed power per unit volume), it can be divided into low/high energy density sand mills.
In the production of different types of ink, the structure of the sand mill is also different. Probably observe the following rules: Intaglio ink production generally uses pin rods (5-50 liters) or disc sand mills (10-100 liters). Rotary offset printing inks generally use vertical rod type (5-130 liters) or horizontal disk type sand mills (60-500 liters), while the production of ultra-high viscosity sheet-fed inks often uses high energy density cone sand mills or three Roll machine. Inkjet inks (ink and pigment solvent type) generally use high energy density pin-rod type (horizontal or vertical) and centrifugal turbine rotor (new patented product).