Paper # 25 - Copper Mountain Overview on the Grinding ...

The Copper Mountain SAG mill is 10363 mm [34 feet] in diameter and 6096 mm [20 feet] long. It is a grate discharge mill with an inside diameter of 10363 mm [34 feet] and a grinding length of 5334 mm [17.5 feet]. The mill is driven by two 8,500 horsepower ABB motors. Figure 2 - …

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Grinding Circuit - an overview | ScienceDirect Topics

SAG mill product feeds two parallel ball mills of 6.6 m×11.1 m (internal diameter×length), each with a 9.7 MW twin pinion drive. The ball mills are operated at a ball charge volume of 30–32% and 78.5% critical speed. The SAG mill trommel undersize is combined with the ball mills' discharge and pumped to two parallel packs (clusters) of ...

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AG Mill and SAG Mill. Feeding size: ≤25mm. Capacity: 0.65-615t/h. Output size: 0.074-0.89mm. Applications: It is commonly used in the mineral processing industry and ferrous and non-ferrous metal ore and nonmetal ore processing plants. It can also be used in …

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FREDA REBECCA SAGMILLING CIRCUIT OPTIMIZATION

SAG mill in closed circuit with hydro cyclones at Freda Rebecca Gold Mine would affect through put ... The major disadvantage is the sensitivity of these machines to process input variations. Foremost among these is ore competence and feed size distribution comes as close as second. This sensitivity is due to the reliance of AG/SAG mills on the ...

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Ball mill: When the particle size of the product is less than 0.5mm, the grinding effect of the ball mill is greater than that of a rod mill of the same specification. SAG mill: The SAG mill has a wide range of feeding particle sizes and can process larger minerals, but at the same time, its output particle size is relatively larger.

AG Autogenous Grinding - Mineral Processing & Metallurgy

The plus ½" mill product was crushed in a cone crusher and returned to the mill feed along with the minus ½" plus 4 or 6 mesh fraction. Tests were run with a short mill, inside length of 26-3/8″, or diameter-to-length ratio of 2.50 to 1. The same mill …

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Mill Availability and Maintenance. In the past two years, overall grinding availability has averaged 92.7%. Mill availability of better than 90% is maintained at Colosseum by using 2.8% of the available hours per month to perform preventative tasks on the SAG mill and other equipment in the grinding circuit. Advantages and Disadvantages

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SAG mill by feeding crushed pebbles; ... this has the disadvantage of not controlling the top size of feed to the ball-mill circuit. There have also been pioneer …

Optimization and Performance of Grinding Circuits: The ...

Semi-Autogenous Grinding (SAG) mill and a ball mill. The SAG mill circuit also includes ... this gives additional advantage in the sense that, also better hydrocyclone performance is achieved in terms of overflow product (x. P, 80 = 105 µm vs. > 240 µm), cut size (x. T

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SAG mill can be applied as the first stage grinding equipment. It can effectively avoid the occurrence of sliming phenomenon, and avoid further grinding of fine particles. It can play a good role in controlling granularity and energy saving. Advantage of SAG Mill. …

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SAG mill disadvantage - allanswers.in The Selection and Design of Mill Liners - MillTraj- SAG mill disadvantage,Dramatic shortcomings of mill liner designs, especially of large SAG mills, - such as rapid failure and even mill shell, Wear testing techniques and their drawbacks and, with comments on their application, advantages and ...

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Comparing strategies for grinding itabirite iron ores in ...

Further, either SAG or AG mills can be operated in a stand-alone mode (single-stage) or coupled to a ball mill in FAB or SAB configurations (Gupta and Yan, 2016). The size distribution of the fresh feed as well as the ball size distribution are also known to have important effects in the process ( Napier-Munn et al., 1996 ).