放矿截止品位动态优化方法研究及应用

放矿截止品位的确定合理与否关系到矿山的综合效益,随着开采活动、市场经济指标的动态变化,有必要对截止品位进行动态优化计算。结合鲁矿集团下属两矿山的最优截止品位的研究,综合考虑矿产品价格、采选成本、地质品位、采选工艺等因素对于截止品位的影响,以最大盈利值为原则建立了截止品位动态优化模型,并通过黄金分割法求得了最优值。其结果为矿山生产决策提供了重要的理论依据。

Research and Application of Dynamic Optimization Method of Cut-off Grade for Ore Drawing

The reasonable determination of cut-off grade for ore drawing is related to the comprehensive benefit for a mine,therefore,the dynamic optimization of drawing cut-off grade must be made because of the dynamic changes of exploration and market economic index.Through studying the optimal cut-off grades of ore drawing for the tow mines of Luzhong Mining Corporation,and comprehensively considering the influences of mineral prices,mining and mineral processing costs,geological grade,mining and mineral processing technologies on cut-off grade for ore drawing,a dynamic optimization model of cut-off grade was established based on the principle of maximum profit,and the reasonable cut-off grade was solved by golden section search method.The results have provided important theoretical basis for decision making of production.