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棒磨山铁矿所采用的品位指标已不适应目前矿山生产的实际。为了寻求最优的品位指标，研究中采用系统工程的方法，着重考虑了矿山现有地、采、选等条件，建立了可采品位指标滚动优化系统，并以经济效益作为主要决策目标进行了多目标决策，确定了矿山最优可采品位为１６％（ＴＦｅ）。采用新的优化指标，矿山将增加１２４万吨的原矿量，并会取得显著的经济效益和社会效益。
The grade index adopted by the Great Mill Hill Iron Mine has not adapted to the actual mine production. In order to seek the best grade index, the systematic engineering method was adopted in the study, and the existing conditions of mining, mining and selection were considered. The rolling optimization system of recoverable grade index was established, and the economic benefit was taken as the main decision target Multi-objective decision-making, determine the mine can recoverable grade of 16% (TFe). With the new optimization index, the mine will increase the amount of 1.24 million tons of ore and will achieve significant economic and social benefits.