昆阳磷矿数字配矿优化模型与配矿工艺规程

随着开采年限和深度的增长,昆阳磷矿中低品位矿石比例逐渐增大,为了达到磷矿质量指标,满足磷酸和高浓度磷复肥等的生产要求,实现多目标精细配矿,针对昆阳磷矿的矿石品位和有害杂质特征,提出了一种基于多目标线性规划的配矿计算方法.首先根据昆阳磷矿矿石特征,建立线性规划函数,确定配矿目标及约束,然后结合昆阳磷矿目前的配矿方法及矿物加工要求,建立多目标数字配矿优化模型；最后借助Matlab软件实现多目标配矿解算技术.另外,针对配矿的生产过程与管理,提出了关于优化配矿管理制度的措施.研究结论证实多目标线性规划数字配矿优化模型与合理的配矿管理制度相结合既达到多元目标的配矿要求,又给矿山企业带来更大的经济效益.

Digital optimization model & technical procedure of ore blending of Kun Yang phosphate

With the growth of the mining time and depth,Kun Yang phosphate gradually increases in the proportion of middle-low grade ore.To achieve the quality index of phosphate and meet the production requirements of phosphoric acid and high concentration of phosphate compound fertilizer,achieving multi-objective refined ore blending,a calculation method of ore blending was put forward based on the multi-objective linear programming model,with regarding to the ore grade and the feature of harmful impurities of Kun Yang phosphate.Firstly,based on the ore feature of Kun Yang phosphate,the linear programming function was established and the objectives and constraints of ore blending were determined.Then current ore blending method of Kun Yang phosphate was combined with mineral processing requirements,and the multi-objective linear programming model was established.At last,the multi-objective ore blending technology was achieved by the Matlab software.What’s more,the study proposed several measures about optimizing ore distribution management system based on the production process and management of ore blending.It is proved that the combine of the optimized model of multi-objective linear programming and a reasonable ore blending production management system can not only reach the ore blending requirements of diversity objectives,but also make a great contribution to the economic benefits of mining enterprises.