Document Type


Date of Award

Spring 5-31-1967

Degree Name

Master of Science in Chemical Engineering - (M.S.)


Chemical Engineering

First Advisor

Jerome J. Salamone

Second Advisor

John E. McCormick

Third Advisor

Deran Hanesian


This investigation attempts to obtain a better understanding of flow behavior of a pigmented dispersion in a ball mill.

A power-law fluid model was used to approximate the rheological behavior of the milled fluid. To cor­relate power data on each of 276 milled dispersions, this model was used together with power number, Reynolds number, Froude number; and some geometrical variables.

Laboratory size stainless steel jars containing stainless steel balls from 1/8 to 3/4 inches in diameter were used to Mill a pigment/binder/solvent system at various speeds for different periods of time.

A correlation of power number as a function of a modified Reynaldo number, Froude number and mill diameter-to-ball diameter ratio was found.