采用两种粒度试样测定神华煤中全水分的偏差研究  

Study on the deviation of total moisture contents in Shenhua coal by two kinds of particle size

作　　者：陈宝华[1,2] 邢勇峰 武增礼[1,2] 

机构地区：[1]国家煤炭质量监督检验中心,北京100003 [2]煤科(沧州渤海新区)煤炭检测有限公司,河北沧州061113 [3]神华销售集团有限公司黄骅化验室,河北沧州061113

出　　处：《煤质技术》2017年第1期20-22,共3页Coal Quality Technology

摘　　要：采用13mm和6mm两种粒度煤样对神华煤中全水分进行方法间对比试验,按全水分范围分段统计分析试验结果,以探究两种粒度煤样的试验方法间有无系统偏差。试验结果表明,采用两种粒度试样测定神华煤中全水分的测定结果之差在95%概率下最大不超过0.4%,其测定方法间不存在显著性差异,可以相互代替。In this paper, 13mm and 6mm coal samples were used to compare the total moisture content for Shenhua coal. According to the range of the total moisture, the experiments results was statistically analyzed in sections to investigate whether there were systematic deviations between the two methods.The results showed that： using these two types of particles to do the total moisture determination, the determination results difference would not exceed 4% under 95% probability.There was no significant difference between the two methods, and they could be substituted for each other.

关 键 词：粒度 全水分 神华煤 系统偏差 试验方法 显著性差异 置信区间 重复性限 

分 类 号：TQ533.2[化学工程—煤化学工程]