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产品组合模型解析了稀土萃取流程的联合成本,可求出最优产品组合.在此基础上,建立了适量积压模型.根据期望销售价格、库存维持成本、资金利率等,计算了积压产品的现值.随稀土价格走势,积压产品的现值可高于、等于或低于现价,从而目标函数成为分段线性函数.模型可求解适宜积压量下现金收入或利润的极值.最后给出了计算实例.
The product portfolio model analyzes the joint cost of the rare earth extraction process, and obtains the optimal product portfolio.On the basis of this, an appropriate backlog model is established.According to the expected sales price, inventory maintenance cost, capital interest rate and so on, With the price trend of rare earths, the present value of the backlog products can be higher than, equal to or lower than the current price, so that the objective function becomes a piecewise linear function.The model can solve the extremum of cash income or profit under suitable backlog.Finally, Calculation example.