摘要
对比了单煤及两两混煤可磨性指数(HGI)的实测值与计算值,说明同一配比、不同混煤的实测值与计算值不完全相等,存在一定误差。分析了存在偏差的主要原因为:实验本身的系统误差和单煤之间可磨性指数(HGI)不具有线性可加性。最后通过t检验验证可磨性指数(HGI)实测值与计算值之间的差异是否显著。结果表明:同一配比、不同混煤时,大量难磨煤与少量易磨煤组成的混煤可磨性指数(HGI)实测值与计算值具有显著性差异;其它配比条件下,不同混煤实测值与计算值之间差异性不明显。同一混煤、不同配比时,混煤可磨性指数(HGI)实测值与计算值之间误差不全在正常范围内,混煤可磨性指数(HGI)与配比不全具有线性相关性。单煤可磨性指数(HGI)不具有线性可加性。
Compare the measured and calculated value of grindability index （HGI） of single coal and mixed coal. The results show that same proportion and different mixed coal for the measured and calculated value are not completely equal, there is a certain error. There are two main reasons. Error exists in the experiment and the grindability index （HGI） of single coal has no linear additivity. Verify the HGI between measured and calculated value through the t test validation. The results show that, keeping the same proportion and different mixed coal, measured and calculated value of HGI of mixed coal between large number of difficult grinding coal and a small amount of easy grinding coal have significant differences. Changing the proportion, the measured and calculated value of different mixed coal is relatively close. Keeping the mixed coal type unchanged, when the proportion is different, the error between measured and calculated value of HGI is not in the normal range. HGI hasn＇t linear relationship with mixed coal proportion. The HGI of single coal has no linear additivity.
出处
《洁净煤技术》
CAS
2013年第4期37-40,共4页
Clean Coal Technology
