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无贫化放矿是指在放矿过程中,当覆岩正常到达出矿口时即停止出矿的一种放矿方式。其理论依据之一是:最大限度地保持矿岩界面的完整性,并减少矿岩接触面积,降低矿岩混杂程度,避免放矿时多次大量的废石混入。
Dilution-free ore-freeing means a kind of ore-dressing method that stops the ore when the overlying strata reaches the ore mouth normally during the ore-drawing process. One of its theoretical basis is: to maximize the integrity of the ore-rock interface, and reduce the contact area of ore, reducing the degree of mixed ore and ore to avoid a large number of waste rock mixed.