端部放矿贫化损失的预测研究

放矿贫化损失指标的预测和控制方法是放矿理论研究的重要内容，现有的端部放矿理论仅研究了放出体正面废石混入贫化率的计算方法，无法实现生产实际放矿过程中，对多方废石混入贫化损失指标的预测和控制。为此，研究了端部放矿过程中多方废石混入贫化损失的形成机理。在现有放出体正面废石混入贫化率计算的基础上，提出了放出体顶部废石混入贫化损失指标的计算方法，放出体侧面废石混入及放出体多方废石混入贫化和损失指标的计算方法，建立了较完整的端部放矿贫化损失指标的预测计算体系。

Study on the Prediction of Ore Dilution and Loss Rates in Side Drawing

The prediction and control method of ore dilution and loss rates is an important component of drawing theory. The available side drawing theory studies only the calculation method for the dilution rate when front wastes are mixed into the drawing body, and fails to realize a prediction and control of the dilution and loss rates in actual production where wastes come into the drawing body from various directions. Therefore, the mechanism of dilution and loss formation in a side drawing process involving wastes coming from various directions is studied. Based on the current dilution rate calculation involving the front wastes mixing, calculation methods for the dilution and loss rates involving the wastes from top, flank and multi-directions are proposed respectively, setting up a complete prediction calculation system for the dilution and loss rates in side drawing.