Agitator ball mill

The fact that P.Y.127 recrystallizes only very slightly facilitates its dispersion in modern agitated ball mills. The pigment is easy to disperse and its heat stability parallels that of P.Y.13. Its fastness to clear lacquer coatings and to sterilization are excellent, which is why the pigment is suitable for metal deco printing. 

P.O.36 is completely fast to overcoating. Bleeding into a white overcoat is only observed at baking temperatures above 160°C. P.O.36 is heat stable up to 160°C. In dispersing the opaque type, it is important to avoid excessive shearing forces and to closely monitor the temperature, especially if agitated ball mills are used. Faulty temperature control may lead to a dull color. 

In industrial and laboratory settings the subdivision process more commonly involves the comminution of large particles or aggregates into smaller sizes, either dry with subsequent dispersion (size reduction to the order of a few pm) or directly in a slurry (size reduction to as small as a few tenths of pm). Examples of comminution machines include agitator ball mills, colloid mills, cutting mills, disk mills, homogenizers, jet mills, mechanical impact mills, ring-roller mills, and roll crushers. 

Stirred media mills or agitated ball mills are used mainly in wet microfine and nanofme milling. They are filled to 80 % capacity with grinding media (glass beads,... 

Hochberg, S. Bosse D, "Agitator Ball Mill - Sand Grinding Process, U.S. Patent 2 855 156 Nov. 1958 Bosse, D. "Pigmented Systems and Application of the Sand Grinder" Purdue Univ. Short Course March 1959. Daniel, F. "Determination of Mill Base Composition for High Speed Dispersers" Jour, of Paint Technology... 

Agitator Ball Mill A machine for the comminution, or size reduction, of minerals or other materials. Such machines crush the input material by wet grinding in a cylindrical rotating bin containing grinding balls. Colloidal size particles can be produced with these mills. 

Agitator ball mills (i.e., sand or bead mills) permit continuous operation and shorter dispersion times. Particle sizes of < 10 pm can be achieved with relatively fast throughputs. These mills are therefore also used for high-quality paints (e.g., for automotive finishes or car refinishing). 

Agitator ball mills crush material by wet grinding in a cylindrical rotating bin... 

Agitated ball mills have a distinct advantage over tumbling ball mills and vibratory ball mills, due to their higher energy utilization. They also allow to deal with slurries with relatively higher contents of solids. The milling efficiency can be... 

Figure 2.5 Schematic of an agitated ball mill. (From Ref. 4.)...

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