中文摘要：

为更准确地描述不同变质程度炼焦煤黏结性特征的差异,将6种炼焦煤中的镜质组进行了富集.研究了不同变质程度炼焦煤的黏结指数（G值）随镜质组含量增加的变化规律.结果表明,G值随镜质组含量的增加呈线性增大,拟合出的线性方程的斜率倒数1/k和Y轴截距y0可作为新的考察镜质组活性质量的指标,运用高斯曲线拟合后能精确的描述炼焦煤镜质组活性质量随镜质组珚Rmax增加的变化规律.

英文摘要：

The vitrinite of 6kinds of coking coals were enriched in order to describe the relative active quality difference of different ranks coking coals more accurately.The relationship between the caking index（Gvalues）of different degrees of metamorphic coking coals and the vitrinite contents was investigated.The results showed that G values were increased with the increase of the vitrinite contents and it showed a significant linear relationship.The reciprocal of the slope（1/k）and Yintercept（y0）by fitting the linear equation could be used as new indexes to evaluate the activity quality of vitrinite.These indexes fitting by Gauss curve model could describe accurately the change rules of coking coal vitrinite activity quality with the increase of the average maximum reflectance of vitrinite.