中文摘要：

为了了解窄粒级煤泥可浮性评价指标的相关性,采用浮选速度系数（K）、计算可浮性隶属函数（计算可浮性）和中间密度物可燃体回收率（Ec,md）三个指标对窄粒级煤泥可浮性进行评价。结果表明：K由大到小的粒级依次为0.125～0.074mm、0.074～0.045mm、0.25～0.125mm、0.5～0.25mm和-0.045mm,计算可浮性由大到小依次为0.125～0.074mm、0.074～0.045mm、0.25～0.125mm、0.5～0.25mm和-0.045mm,Ec,md由大到小依次为0.25～0.125mm、0.125～0.074mm、0.074～0.045mm、0.5～0.25mm和-0.045mm。通过对不同评价指标结果的相关性分析发现,K与计算可浮性有强相关性,两者可以作为判定窄粒级煤泥可浮性的基础指标,而Ec,md与窄粒级煤泥可浮性相关性不大,可作为判定可浮性的参考指标。

英文摘要：

To understand correlation between different floatability evaluating indexes（ K） in single size coal slime,flotation rate coefficient of subordinate function（ flotation rate coefficient）,calculation floatability and recovery of middling fractions combustible（ Ec,md） are applied to evaluate floatability of single size coal slime. The results show that flotation rate of single size coal slime decreases in the following order： 0. 125 ～ 0. 074,0. 074 ～ 0. 045,0. 25 ～ 0. 125,0. 5 ～ 0. 25 and- 0. 045 mm,calculation floatability declines in the following order： 0. 125 ～ 0. 074,0. 074 ～ 0. 045,0. 25 ～ 0. 125,0. 5 ～ 0. 25and- 0. 045 mm,and recovery of middling fractions combustible lessens in the following order： 0. 25 ～ 0. 125,0. 125 ～ 0. 074,0. 074 ～ 0. 045,0. 5 ～ 0. 25 and- 0. 045 mm. The analysis of correlation of different evaluation indices indicate that flotation rate coefficient had strong correlation with calculation floatability, both of them can be used as basic indices to evaluate floatability of single size coal slime. By contrast,recovery of middling fractions combustible has little correlations with floatability of single size coal slime,which only can be used as a reference index to evaluate floatability.