SAG is an acronym for SemiAutogenous Grinding SAG mills are essentially autogenous mills but utilize grinding balls to aid in grinding like in a ball mill A SAG mill is generally used as a primary or first stage grinding solution Attrition between grinding balls and ore particles causes grinding
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Autogenous and Semiautogenous Grinding Practices Autogenous and Semiautogenous Grinding PracticesWith some ores it is possible to send minerun ore directly to the semiautogenous mill eliminating the need for a primary crusher as at Benquets Dizon mill in the Philippines An autogenous or semiautogenous circuit as the name implies uses the ore itself to assist in the grinding process
The MacPerson Autogenous Grindability Test determines the MacPherson Correlated Autogenous Work Index This can be used in conjunction with the Bond Rod and Ball Mill Work Indices to determine power requirements and to suggest circuit configurations for autogenous grinding AG and semiautogenous grinding SAG circuits
Computer Control of the Semiautogenous Grinding Mill at SACRIS EM and FORONDA JG Computer control of the semiautogenous grinding mill at Benguet Corporations Kaline Concentrator Zambales Philippines
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Picking the proper crushing and grinding method must therefore be done with great care so the best circuit is chosen In the past 10 years there has been a strong trend toward using autogenous or semiautogenous grinding in mills throughout the world Autogenous grinding is favored when the ore is quite competent and a fine grind is needed
autogenous grinding machines fracture of the media particles also occurs by both impact self breakage and attrition The relative motion of the media is determined by the tumbling action which in turn is quite strongly influenced by the liners and lifters that are always fixed inside the shell of the mill Liners and lifters have two main purposes 1
Advanced Simulation for SemiAutogenous Mill S ystems A Simplified Models Approach 147 description it is necessary to consider the relationship between the feed stream and mill charge level This relationship is known as the transport rate and is probably the least developed aspect in models proposed so far Apelt et al 2002 ab
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