autogenous mill

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June 18, 2026

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An autogenous mill is a type of grinding mill used in mineral processing. Unlike other mills that use grinding bodies like stones or metal balls, an autogenous mill uses the coarser part of the ore itself to grind the smaller fractions. A variation, the semiautogenous mill, incorporates a small percentage of grinding bodies along with the ore. These mills are part of the comminution process, which aims to break down crude ores into smaller particles to liberate valuable minerals from waste rock. This is a crucial step before the valuable minerals can be concentrated and extracted.1

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mineral processing
Grinding
Autogenous mills operate without grinding bodies; instead, the coarser part of the ore simply grinds itself and the smaller fractions. To semiautogenous mills (which have become widespread), 5 to 10 percent grinding bodies (usually metal spheres) are added.
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Autogenous mills operate without grinding bodies; instead, the coarser part of the ore simply grinds itself and the smaller fractions. To semiautogenous mills (which have become widespread), 5 to 10 percent grinding bodies (usually metal spheres) are added.
Read More