The samples can be taken from adits, pits, trenches, etc., in the ore body or they can be crushed drill cores.While it is helpful in anticipating variations in feed rates to know the grindability of the various ore types in a deposit, for mill selection grindability tests should be run on composite samples representative of the blended mill feed.
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In a situation where a SAG mill/ball mill pilot plant test has been run, Only if a ball milling drop weight test is performed can the matrix A be determined for Used Mining Equipment for Sale, Ball Sag
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inside the mill and it is composed of balls, ore and water. The ball charge is a function of the bulk fraction of the SAG mill volume (Jb) occupied by balls the ore retained in the mill is the result of the volumetric ﬁlling which depends on the ore size distribution (specially the % +600 and the % 600 +100), on the rotational speed (N/Nc)
Orway Mineral Consultants Canada Ltd. Mississauga, ON
submitted to the Bond ball mill work index test. The number of SAG mill revolutions required to grind the material to a P 80 of 1.7 mm is used to predict AG/SAG specific energy using quation 4. Correction E factors for feed size and pebble ing are applied to the AG/SAG specific energy, as well as specific crush energy adjustment from 1.7 mm to