semiautogenous mill

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July 13, 2026

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A semiautogenous mill is a type of grinding mill used in mineral processing. Unlike traditional grinding mills that use grinding bodies like stones or metal balls, semiautogenous mills primarily use the coarser part of the ore itself to grind smaller fractions. To enhance this process, they typically incorporate a small percentage (5-10%) of grinding bodies, usually metal spheres.1

Grinding mills are machines used for grinding materials. This can include processes like grinding grain or sugarcane, or for dressing metal parts. In mineral processing, comminution, which includes grinding, is a crucial step to liberate valuable minerals from waste rock before further processing.21

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mineral processing
Grinding
…development is the autogenous or semiautogenous mill. 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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…development is the autogenous or semiautogenous mill. 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