The first mention of a colloid mill came from a Russian colloid chemist, Von Weimarn, who in 1910 proposed using a mechanical device to generate shearing action to produce colloidal dispersions (1-5). In Hamburg, another Russian engineer named Plauson developed and patented in 1921 a colloid mill. Plauson modified a hammer mill"... so that the beater arms impinged on a liquid surface. Further, he operated the rotor at very high peripheral speed to increase the number of blows in a given time" (2). The Plauson mill used excessive horsepower, was intermittent in its operation, and was not very successful on a plant scale (1).

After the introduction of the Plauson mill, many different designs of colloid mill were introduced. In 1928, Clayton, in his book The Theory of Emulsions and Their Technical Treatment, described 22 different colloid mill designs, many protected by patents (2). The colloid mill became popular because of its high volume output and low maintenance costs.

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