Abstract: Abstract Size reduction is an extremely important unit operation, whereby materials are subjected to stress in order to reduce the size of individual pieces. The stress is applied by transmitting mechanical force to the solid. This article covers particle breakage and fracture mechanics, models predicting grindability and energy requirements, prediction of particle‐size distribution, and methods of applying stress. Stress can be applied by impact, crushing, cutting, or by stressing the surrounding medium, or by nonmechanical methods. The principal properties of particles that need to be considered in size reduction are toughness/brittleness, hardness, abrasiveness, feed size, cohesity, particle shape and structure, heat sensitivity, toxicity, explodability, and specific surface. Typical size‐reduction equipment includes jaw crushers, roller mills, cone crushers, ball mills, rod mills, hammer mills, pin disk mills, turbine mills, jet mills, and cutting mills. Wet grinding is also employed.
Publication Year: 2000
Publication Date: 2000-12-04
Language: en
Type: other
Indexed In: ['crossref']
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Cited By Count: 3
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