WebSep 12, 2016 · The Break-Even Grade. The cut-off grade that is used by most mining companies for the “process” / ”do not process” decision, rightly or wrongly, is the break-even cut-off grade. The break ... WebThe SR max is determined solely by economics, to establish the ultimate boundary of the pit, where break even occurs, i.e. the profit margin is zero. As we defined it before, SR max …
Definition of Break-even cutoff grade - TeachMeFinance.com
WebJan 1, 2024 · Table 3 shows how the cutoff grade is calculated for a limiting factor (mining or processing plant or refining unit), when the optimal cutoff grade is calculated using economic factors. However, in general, the optimal cutoff grade is not necessarily the cutoff of economic limitation, and if there is more than one limiting capacity, the equilibrium … Web2.0 (a) Use the calculated cut-off grade for 1(a) (b) Assume a cut-off grade of 0.50% Cu Assume an even feed to the concentrating plant and calculate for (a) and (b) respectively: square4 Overall stripping ratio square4 Head grade square4 Marginal stripping ratio square4 Daily production of ore and waste square4 Annual production of copper metal … how to report a dunkin donuts
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Cut-off grades are used to determine the point at which material becomes economically valuable. Therefore, they are necessary to define … See more The cut-off grade determined in the design phase of a project may become outdated as production continues. It is therefore important to reevaluate the cut-off grade over time. However, the mine plan should not be completely … See more WebThe milling cut-off grade for this operation is calculated to be 0.30g/t. It means that a tonne of ore with 0.3g/t can be sent to the mill and be expected to generate a small amount of profit. Ten percent dilution in this mine will reduce the grade of ore from 0.3g/t to 0.28g/t which is below cut-off grade and will not be able to return a profit. WebSep 25, 2024 · In mine planning process, the cut-off grade is determined prior to producing the reserve physicals. The different cut-off grades are the break-even cut-off grade … northbridge it recruitment pty ltd