SAG and AG Mills operate by lifting ore/grinding media and dropping it on the operating bed of the mill charge. High impacts from lifting ore and media promote impact breakage which is the primary mechanism for size reduction in the mill.
Get PriceIn a typical SAG mill, best practise is to utilise an array of iBolts spread out over the known high-wear areas on the shell and feed head, so as to ensure capture of the broad and singular wear events.
Get PriceTrunnion supported Ball mill in Australia. Shell-supported SAG mill operating in Mexico. 004 More out of ore! Our grinding mills are sized, designed and built for rugged duty and operation in the harshest of environments. Different applications call for various Our ...
Get PriceThe commercially viable and industry accepted alternate is a grate discharge trunnion supported mill or a grate discharge shell supported mill using pulp lifters. The only way to eliminate the problem of flow-back and carry-over of slurry and pebbles is by optimizing the design of the discharge arrangement.
Get Price· The mill length L and diameter D have a profound influence on the mode of failure of mills. A large L/D ratio of 2.5 to 5 sees significant flexing on trunnion-supported mills above 12 ft (3.66 m) diameter. Here shell support is the more efficient way to go. With L/D ratios of ...
Get Pricethe mill shell. The measured power is 3,190 kW at mill shell, so the model predicts high by 298 kW, or 9%. However, by substituting the recommended 5% allowance for a cone end instead of Austin's cone allowance results in a 148 kW of power generated in
Get PriceSep 03, 2014· The arguments for or against the use of castings in mills are not a strong reason to favour or reject shellmounted mills. This is supported by Svalbonas’ observation that the welds in both shell and trunnionmounted mill types can be designed to the
Get PriceA flat-ended (shell-supported) mill is expected to have 5% less power draw. Model Form Loveday's equation is: Where: P is the power evolved at the mill shell, kW P N is the empirical power number read from the chart below D is the mill diameter inside the L
Get PriceTraditionally, the number of shell lifters used in a SAG mill is equal to twice the number of the feet in the mill shell diameter (e.g., a 34-ft-diameter mill shell would have 68 shell lifters). This is also called a 2-D shell lining. Eliminating some shell lifters increases
Get PriceOutotec SAG and ball mill Outotec high-performance grinding mills use advanced simulation tools for the best possible ... trunnion and shell-supported mill designs, complemented by a drive solution that is tailored for optimum performance in any environment 7 ...
Get Price24-7-2014· FIG. 1 illustrates a shell supported grinding mill 1 according to one exemplary embodiment of the invention. The grinding mill 1 may be any type of mill suitable for grinding, such as a Ball mill, an Autogenous (AG) mill, a Semi-Autogenous (SAG) mill
Get PriceShell-supported mills are installed on simple foundations that are only just high enough to allow clearance for the gear guard and to allow mill discharge to flow into the sump. Erection itself is simple and a shell-supported mill does not require to be lifted for
Get PriceA comparison of SAG and ball mill charge actions is shown below. Figure 1 shows the sliding abrasion action of a ball mill while figure 2 depicts the cascading impact action of a SAG mill. The geometrical differences in the liner system lifters can also be seen.
Get Price· In contrast to the cracks in the KCGM mill that seem dormant according to [1], consider the Candelaria SAG mill failure described by Yanez and Tapia in [3]. The SAG mill cracked through the flange and into the shell and this threatened the integrity of the mill.
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