矿石贫化率是指工业矿石品位降低的程度，以百分数表示。是采出的矿石品位与平均地质品位之比，是指矿石在开采过程中，由于废石的混入，致使采出矿石的品位降低，其降低程度以百分比表示。采矿中因混入废石、溶解或因富矿散失等，造成采出矿石的平均品位通常比矿体平均品位低，一般用百分比表示。
矿石贫化率取决于放矿参数。
The ore dilution rate depends on the ore drawing parameters.
采矿损失率和矿石贫化率是表征一个矿山企业采矿技术水平和管理水平的重要参数。
Mining loss and dilution are important indices that demonstrate the technology level of mining and management level of a mine.
对于急倾斜极薄矿脉的开采国内外最常用的采矿方法是浅孔留矿法，实践表明，该法存在人工劳动强度大、矿石贫化率高等缺点。
Through an exploratory survey of residual deposit in the sourthern zone of a copper ore mine, inclined thin veins with difficult occurrence and complicated mining conditions were discovered.
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