SAG Mills

SAG Mill Liner Design

SAG_LinersTo a more significant degree than in other comminution devices, SAG Mill Liner Design and Configuration can have a substantial effect mill performance. In general terms, lifter spacing and angle, grate open area and aperture size, and pulp lifter design and capacity must be considered. Each of these topics has had a considerable

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SAG Mill Grinding Circuit Design

AG and SAG mills are now the primary unit operation for the majority of large grinding circuits, and form the basis for a variety of circuit configurations. SAG circuits are common in the industry based on:

  • High single-line capacities (leading to capital efficiency)
  • The ability to mill a broad range of ore types in various circuit configurations, with reduced numbers of unit operations (and a corresponding reduction in the complexity of maintenance planning and coordination)
  • Favourable operating costs (with contributions from reduced liner/media consumption relative to conventional circuits)

SAG Mill in Operation Buy a Small SAG Mill

Though some trepidation concerning AG or SAG circuits accompanied design studies for some lime, such circuits are now

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Stockpile Segregation

The video below graphically explains the common problem of Coarse Ore Stockpile Segregation.  This topic relates to SAG Mill tonnage and the bad habit of putting bulldozers “dozers” on ore stockpiles.

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What Ore Testing is Required For Mill Selection

Beginners might ask what grinding test data is required in order to properly size a grinding mill. After the grind requirements are established, testing for the selec­tion of comminution circuits and mill size can be initiated and can include the following:

  • Primary Autogenous Media Competency
  • Primary Autogenous and Semi-Autogenous Pilot Plant
  • Secondary Autogenous (Pebble) Testing
  • Impact Crushing – Bond Work Index
  • Rod Mill Grindability – Bond Work Index
  • Ball Mill Grindability – Bond Work Index
  • Abrasion Index
  • Crushing, Grinding and Concentration Pilot Plant

SAG & AG Mills can be sized according to any of the most appropriate methods of rock

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