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DEFINING BLENDING CLASSES TO SOLVE OPEN PIT SCHEDULING PROBLEMS

机译：定义混合类别以解决露天开采矿场调度问题

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摘要

For this paper, blending is conceived as a linear process that takes a proportion from one stockpile or location and mixes it with another proportion from another stockpile or location, with the aim of obtaining a set of attributes in the final combination that satisfies a given quality standard. A blending class is the combination of ore attributes and grade limits that should be stockpiled in order to achieve the target quality for the process Plant. Current literature considers the number of blending classes in the Open Pit Scheduling Problem as fixed; however, this paper shows how to define specific blending classes for a given deposit so that the schedule can be solved with Sequential Linear Programming. Finally, a practical application in a Peruvian copper mine is shown, involving four ore attributes: alteration code, arsenic, oxide content and copper grade.
机译：在本文中，混合被认为是一个线性过程，该过程从一个物料或位置取一个比例，然后将其与另一个物料或位置的另一个比例混合，目的是在最终组合中获得满足给定质量的一组属性标准。混合类别是应存储的矿石属性和品位限制的组合，以实现过程工厂的目标质量。当前文献认为露天坑调度问题中混合类的数量是固定的。但是，本文显示了如何为给定的矿床定义特定的混合类别，以便可以使用顺序线性规划来解决进度表。最后，显示了在秘鲁铜矿中的实际应用，涉及四个矿石属性：蚀变码，砷，氧化物含量和铜品位。

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