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If the net grade penalty is greater than the crusher cash flow, then the crusher won't feed.
If the Fe grade penalty is greater than the Al grade penalty, then the optimiser may blow out Alumina to keep Iron on spec. This is because the penalty of dirtying Al is lower than the penalty of dirtying Fe.
Notes
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Note that setting goals and minimum varieties does not guarantee that they will be strictly adhered to. With multiple specifications in a project, the optimizer will try to achieve the greatest possible profit, which is made up of different specifications for varieties of different components, as well as cash flows. |
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