| Summary: | The first attempts to rationalize comminution were made by Rittinger in 1867 and Kick in 1885 (1, 2, 3, 4). Rittinger postulated that: “The increase of the surfaces exposed is directly proportional to the force required.” Kick countered that: “The energy needed for producing analogous changes of configuration in geometrically similar bodies of equal technological state varies as the volumes or weights of these bodies.” According to Rittinger, since the surface formed in each stage is double, the energy required to produce each successive stage increases in geometric progression, the ratio being two.
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